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US20110309315A1 - Two speed direct drive drawworks - Google Patents

Two speed direct drive drawworks Download PDF

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Publication number
US20110309315A1
US20110309315A1 US12/876,673 US87667310A US2011309315A1 US 20110309315 A1 US20110309315 A1 US 20110309315A1 US 87667310 A US87667310 A US 87667310A US 2011309315 A1 US2011309315 A1 US 2011309315A1
Authority
US
United States
Prior art keywords
permanent magnet
magnet motor
windings
drawworks
direct drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/876,673
Other languages
English (en)
Inventor
Kevin R. Williams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canrig Drilling Technology Ltd
Original Assignee
Canrig Drilling Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US12/643,439 external-priority patent/US8672059B2/en
Application filed by Canrig Drilling Technology Ltd filed Critical Canrig Drilling Technology Ltd
Priority to US12/876,673 priority Critical patent/US20110309315A1/en
Priority to CA2810646A priority patent/CA2810646C/fr
Priority to CN2011800532421A priority patent/CN103221630A/zh
Priority to PCT/US2011/050622 priority patent/WO2012033793A2/fr
Priority to US13/821,300 priority patent/US9022358B2/en
Assigned to CANRIG DRILLING TECHNOLOGY LTD. reassignment CANRIG DRILLING TECHNOLOGY LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WILLIAMS, KEVIN R.
Publication of US20110309315A1 publication Critical patent/US20110309315A1/en
Priority to NO20130388A priority patent/NO20130388A1/no
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/12—Driving gear incorporating electric motors
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/008—Winding units, specially adapted for drilling operations
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
    • H02P25/188—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays wherein the motor windings are switched from series to parallel or vice versa to control speed or torque
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a DC motor
    • H02P3/12—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a DC motor by short-circuit or resistive braking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor
    • H02P3/22—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor by short-circuit or resistive braking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium

Definitions

  • the present invention relates to oil field equipment. More particularly, the present invention the relates to a drawworks used in oil and gas drilling and production. More particularly, the present invention relates to a drawworks having a permanent magnet motor. Additionally, the present invention relates to permanent magnet motor drive systems that are capable of selectively operating at two different speeds.
  • a drawworks is a common piece of oil field equipment that is used in oil and gas drilling and production.
  • a drawworks is typically mounted near an oil rig.
  • a common function of a drawworks is to raise and lower drill pipe and casing out of and into a wellbore.
  • a drawworks can be referred to as a hoist or a winch.
  • Drawworks are used in the hoisting and lowering of loads, such as drill pipe, when inserting and extracting the drill pipe into and out of the open well.
  • loads such as drill pipe
  • the extraction of the pipe can require extracting in excess of 30,000 feet of pipe in order to change drill bits or tooling during the drilling operation.
  • the drill pipe is often hoisted and lowered many times.
  • FIG. 1 shows a conventional drilling rig 10 that utilizes a prior art drawworks 26 .
  • the drawworks 26 is mounted to the rig floor 12 within the interior of the oil derrick 11 .
  • the drawworks 26 has a wire line 24 extending around the pulley 25 so as to raise and lower drill pipe 14 from and to the wellbore 16 .
  • the pulley 25 is also known as a crown block.
  • the wellbore 16 is formed in the earth 50 .
  • the drill pipe 14 can be a drillstring that is a series of drill pipes extending within the wellbore 16 in the earth 15 .
  • Individual drill pipe 14 is connected to the drillstring at threaded joint 17 .
  • Portions of the drillstring may have stabilizer portions that include stabilizer elements 18 that extend helically along the outer surface of the pipe 14 so as to engage the wall of the wellbore 16 in a manner that centers the pipe 14 therein.
  • the drawworks 26 extends and retracts wire line 24 over the pulley 25 that is mounted on the oil derrick 11 so as to raise and lower the drilling unit 19 that holds the drillpipe 14 .
  • the line 24 is connected to traveling block 23 .
  • the traveling block 23 is suspended and moved upwardly and downwardly by the line 24 which is extended and retracted by the drawworks 26 .
  • the traveling block 23 is connected to the drilling unit 19 .
  • the drilling unit 19 has a swivel 22 at its upper end to which drilling fluid is introduced into the drill pipe 14 , and by which the drilling unit 19 is suspended from the traveling block 23 .
  • the drilling unit 19 , pipe handler 21 , and the associated connected parts move vertically along axis 20 .
  • the vertical movement is guided by two vertical guide rails 27 , or tracks, that are rigidly attached to the derrick 11 .
  • the drilling unit 19 is attached to a carriage 28 .
  • the carriage 28 has rollers that engage the rails 27 .
  • the rails 27 guide the carriage 28 for vertical movement upwardly and downwardly along the rails 27 parallel to vertical axis 20 .
  • the drill pipe 14 is inserted into and removed from the wellbore 16 through the wellhead 13 .
  • the drawworks 26 typically has a hollow drum, a shaft that connects the drum to a motor, a transmission positioned between the motor and the drum, and a braking system for slowing the rotation of the drum.
  • the drawworks 26 is mounted on the floor 12 of the drilling rig 10 .
  • the longitudinal axis of the drum and shaft is parallel to the drill floor 12 .
  • Typical motors used on the drawworks 26 are AC electric motors, DC electric motors, and diesel combustion engines. Power is typically transmitted from the motor to the shaft by a chain transmission mechanism or a gear transmission mechanism.
  • the braking system can use a variety of techniques for braking the drum.
  • the braking system can use disc brakes, band brakes, water-cooled brakes, or electric brakes.
  • As the line 24 is retracted by the drawworks 26 the line 24 is wrapped around the drum of the drawworks 26 .
  • the wrapping of the line 24 around the drawworks 26 is similar to wrapping a thread around a spool.
  • a transmission is costly, adds weight to the drawworks, and needs periodic repair. Maintenance of a transmission can be costly, especially in the event of a total failure of the transmission. Power is also lost with the use of a transmission due to frictional forces that are inherent in the use of transmissions.
  • Typical drawworks 26 also use large amounts of energy for changing the direction of rotation of the drawworks 26 . Thus, there is a need for a simple design of a drawworks that is lighter, easier to maintain, uses less energy, and is more energy efficient.
  • U.S. Pat. No. 6,182,945 issued on Feb. 6, 2001 to Dyer, et al., discloses a fully redundant drawworks with two complete and totally independent systems for controlling and powering the drum and the drum shaft of the drawworks.
  • Each system has at least one power source, a power transmission, and a coupler connected to the power source and to the transmission and to the drum shaft.
  • Each system has a braking system, such as disc brakes, band brakes, electric brakes, or water-cooled brakes.
  • the fully redundant drawworks has the ability to raise drillpipe from a wellbore so as to avoid the risk of a “stuck” drill pipe.
  • U.S. Pat. No. 4,226,311 issued on Oct. 7, 1980 to Johnson et al., discloses a disc-type brake apparatus adapted for installation in combination with the drawworks of a wellbore drilling operation.
  • the apparatus automatically senses any reverse torque situation in the drill pipe and quickly sets the brake for precluding transmission of any reverse torque to the rotary table device clutch mechanism therefor.
  • U.S. Pat. No. 3,653,636, issued on Apr. 4, 1972 to Burrell, discloses a reversible hydraulic motor and a high-pressure/low-pressure hydraulic reservoir system that are used to counterbalance the weight of a drillstring or other well equipment suspended from a line wound on a drawworks positioned on a floating vessel.
  • a load cell controls the torque output and the direction of the output drive of the hydraulic motor.
  • high pressure hydraulic fluid from an accumulator moves through the hydraulic motor into a low pressure hydraulic fluid reservoir to provide increased torque to the drawworks as the drawworks spools a wire line upward.
  • the hydraulic motor reverses so as to move low pressure fluid from the low pressure reservoir to the high pressure accumulator. This decreases torque and reverses direction to the drawworks as the drawworks extends the line.
  • U.S. Patent Publication No. 2008/0116432 published on May 22, 2008 to Folk et al., discloses a winch that includes an electric motor having a fixed stator, and a cylindrical rotor which rotates about the stator. A drum is affixed to the rotor and carries a cable which is wound or unwound by the winch.
  • the winch may be a drawworks for an oil rig.
  • the electric motor can be a permanent magnet electric motor.
  • a bearing mechanism is positioned between the motor stator and the motor rotor.
  • U.S. Pat. No. 3,211,803 issued to Pryor et al., discloses a generator-feed electric drive for a drawworks that has electric motors, a driving connection between the motors and the drawworks, a generator, an electrical connection to the generator and the motors for supplying electricity to the motors, an engine, and a connection between the engine and the generator for supplying power to the generator.
  • the electric motors have a total power absorption capacity that is substantially larger than the power output capacity of the engine, whereby the torque available to drive the drawworks is substantially greater than would be available from motors having a total power absorption capacity equal to the power output capacity of the engine.
  • U.S. Pat. No. 4,438,904 issued on Mar. 27, 1984 to White, discloses a drawworks that has a drilling platform supporting the drawworks, a cable-drum shaft rotatably supporting the cable drum between two upright support-wall members, an input shaft, a driving mechanism for driving the input shaft in rotation, a clutch-controlled chain sprocket and chain transmission for causing rotation of the drum shaft and the cable drum at any of multiple speeds in response to rotations of the input shaft, and a controller disposed outside of one of the support-wall members.
  • the drum shaft has an extension beyond one of the support-wall members.
  • a single outboard brake is fixed to the drum-shaft extension.
  • U.S. Pat. No. 6,029,951 discloses a system and method for the use of a drawworks where the drawworks has a rotatable drum on which a line is wound. The drawworks and the line are used for facilitating a movement of a load suspended on the line.
  • a drawworks-control system monitors and controls the drawworks.
  • a brake arrangement is connected to the rotatable drum for limiting the rotation of the rotatable drum.
  • An electrical motor is connected to the rotatable drum for driving the rotatable drum.
  • the drawworks control system provides a signal that is representative of the calculated torque value of the electrical motor wherein pre-torquing is generated in the electrical motor in response to the signal. Control of the rotation of the rotatable drum is transferred from the brake arrangement to the electrical motor when the electrical motor pre-torquing level is substantially equal to the calculated torque value.
  • U.S. Pat. No. 4,046,355 issued on Sep. 6, 1977 to Martin, discloses a control apparatus for use with a drawworks assembly that has a work piece suspended from, and applying tension to, a cable. One end of the cable is wound on a drum. The rotation of the cable is controlled by a power brake mechanism.
  • the control apparatus has a cable tension sensor that produces a tension signal proportional to the tension in the cable.
  • a pulse generator produces a pulsed control signal.
  • a brake control applies the tension signal to the power brake mechanism in response to the control signal.
  • U.S. Patent Application No. 60/726,077 filed on Oct. 13, 2005 by the present inventor, discloses a drawworks for drilling and mining operations.
  • the drawworks has a wire rope drum which is driven by at least one AC motor.
  • a drive shaft couples a brake with the wire rope drum.
  • the motor is operated from a utility power supply.
  • the drawworks has a flywheel system that stores energy while braking the rotation of the wire rope drum of the drawworks. Energy stored in the flywheel is used to begin another rotation of the wire rope drum.
  • the speed of the drawworks will vary dependent on the weight of the load. For heavy loads, where the torque demand is high, the required speed of hoisting or lowering the load (pipe) is low. For an empty block or for very light loads (e.g. short pipe lengths), the required speed increases. As such, it would be desirable to have a permanent magnet motor associated with the drawworks that could have a high speed and a low speed. Such a high speed and a low speed, under constant power conditions, could provide either enhanced torque or reduced torque depending upon the requirements of the load.
  • U.S. Pat. No. 4,910,790 shows a two-speed permanent magnet D.C. electric motor.
  • This D.C. electric motor has a housing, permanent magnets carried by the housing, and an armature assembly installed in the housing.
  • the armature assembly has a shaft rotatably mounted in the housing, first coil windings, a first commutator connected to the first coil windings, second coil windings and second commutator connected to the second coil windings.
  • a first set of brushes is carried by the housing and engages the first commutator for applying a D.C.
  • a second set of brushes is carried by the housing and engages the second commutator for applying the same D.C. voltage to at least the second coil windings to cause rotation of the armature assembly at a second speed.
  • U.S. Pat. No. 5,952,757 issued on Sep. 14, 1999 to J. H. Boyd, describes a line start permanent magnet motor.
  • This motor has a stator with a stator core, a start winding, and first and second main windings. The first main winding and the start winding are configured to form a lower number of poles than the second main windings.
  • the stator core forms a stator bore.
  • the motor also includes a rotor having a rotor shaft concentrically arranged axially of the stator core and a rotor core positioned concentrically with the rotor shaft. Secondary conductors are arranged axially of the rotor shaft and extend through the rotor core.
  • a plurality of permanent magnets are located at an outer periphery of the rotor core and are magnetized to form a number of poles equal to the number of poles formed by the second main winding.
  • the present invention is a direct drive drawworks that has a permanent magnet motor with a first set of windings and a second set of windings, a shaft extending from the permanent magnet motor such that the permanent magnet motor directly rotates the shaft, a drum connected to the shaft away from the permanent magnet motor such that the rotation of the shaft causes a corresponding rotation of the drum, and a switch cooperative with the first set of windings and the second set of windings so as to cause the sets of windings to be selectively connected in parallel or in series.
  • a processor is connected to the switch for switching between the parallel connection and the series connection relative to a condition affecting the load on the shaft and the drum.
  • the processing means serves to switch to the parallel connection when the load on the drum is at a first amount and to switch to the series connection when the load on the drum is a second amount.
  • the second amount of load would be greater than the first amount of load.
  • an AC power supply is electrically connected to the permanent magnet motor.
  • a variable frequency drive is electrically interconnected between the AC power supply and the permanent magnet motor.
  • a resistive load bank is electrically interconnected between the AC power supply and the permanent magnet motor.
  • a transfer switch serves to directly electrically connect the resistive load bank to the permanent magnet motor upon a condition occurring. This condition can be an interruption of power from the power supply to the permanent magnet or an overload condition affecting the drum.
  • the resistive load bank can include dynamic braking resistors.
  • the permanent magnet motor has a first speed when the switch connects the sets of windings in parallel.
  • the permanent magnet motor has a second speed when the switch connects the sets of windings in series.
  • the first speed is greater than the second speed. In the preferred embodiment of the present invention, the first speed is approximately twice the second speed.
  • first set of windings and a second set of windings in a configuration such that these can be connected for a nominal base voltage when in a series connection or for being connected for a nominal voltage of half that amount when in a parallel connection.
  • the two different connections are selectable by a manual selector switch or automatically selected by a processor controlled by the drilling control system.
  • the frequency is increased to twice nominal frequency.
  • twice the nominal speed is achieved at normal power ratings. In this manner, an effective two speed drawworks is achieved.
  • the present invention implements a over-speed detector to open the power supply (i.e. the variable frequency drive system power circuit) and instantaneously insert dynamic braking resistors or a “load bank” so as to absorb the kinetic energy of the rotating drum of the winch or drawworks that is produced from the potential energy from a weight or a “load” (i.e. the drill string and associated traveling and drilling equipment suspended from the drawworks hook) in order to slow down this condition.
  • a weight or a “load” i.e. the drill string and associated traveling and drilling equipment suspended from the drawworks hook
  • This ensures a maximum safer speed limited relative to the associated load of the weight (known as “weight-on-bit” or the free suspended weight of the drill string and related drilling equipment).
  • the load is prevented from crashing when in a runaway condition.
  • the unique two speed permanent magnet motor drawworks is achieved by special connections of a permanent magnet motor design.
  • the control and selection of speeds is selectable and controllable by a user-friendly selector switch or can be electronically-controlled by way of a computer. It can also be controlled by a processor by way of the drilling control system.
  • a constant power is achieved for selection of the speed so as to be perfectly applied for drawworks applications.
  • the motor windings can be connected in a series or parallel configuration through power switching devices and properly controlled. When the parallel selection occurs, the voltage of the motor windings will require one-half of the nominal voltage. Therefore, by operation of twice-rated frequency and at rated voltage (i.e. each set of parallel windings paralleled windings sees double nominal voltage), the speed is twice the nominal value. When in the series configuration, with nominal voltage and nominal frequency applied, the speed is one-half that of the paralleled connections. The frequency remains at nominal, but the power is constant so as to produce nominal torque that is twice that of the paralleled connection.
  • stator power terminals are immediately disconnected through power switches and connected to a load bank or a resistor network to absorb the lowering power and limit the top speed or maximum speed of the falling load. Due to the inherent characteristics of the field flux being produced from the permanent magnet motor, this dynamic braking system utilizes the driving motor itself as the braking device. As such, the present invention can avoid equipment damage and increase personnel safety.
  • FIG. 1 shows a side elevational view of an oil rig utilizing a prior art drawworks.
  • FIG. 2 shows a side elevational view of the preferred embodiment of the permanent magnet direct drive drawworks of the present invention.
  • FIG. 3 shows a perspective view of the preferred embodiment of the permanent magnet direct drive of the present invention.
  • FIG. 4 shows a cross-sectional view of the permanent magnet motor of the present invention.
  • FIG. 5 shows a plan view of the drive plate associated with the permanent magnet motor of the present invention.
  • FIG. 6 shows a perspective view of the rotor of the permanent magnet motor of the present invention.
  • FIG. 7 shows a perspective view of the stator of the permanent magnet motor of the present invention.
  • FIG. 8 is a diagrammatic illustration of the two speed permanent magnet direct drive drawworks in accordance with the teachings of the present invention.
  • FIG. 9 is a winding diagram as used in the two speed permanent magnet motor of the present invention.
  • FIG. 10 is a diagram showing the parallel connections from the winding diagram of FIG. 9 .
  • FIG. 11 is a diagram showing the series connections from the winding diagram of FIG. 9 .
  • FIG. 2 there is shown a side elevational view of the preferred embodiment of the permanent magnet direct drive drawworks 100 of the present invention.
  • the drawworks 100 has a permanent magnet motor 40 .
  • a shaft 41 is connected to the permanent magnet motor 40 .
  • a bearing housing 45 is positioned adjacent the permanent magnet motor 40 and the shaft 41 .
  • the shaft 41 extends through the bearing housing 45 and into the interior of the motor 40 .
  • a drum 43 is attached to the end 47 of the shaft 41 opposite the permanent magnet motor 40 .
  • the wire line 24 wraps around the drum 43 .
  • the drum 43 is in cradle 53 .
  • the cradle 53 supports the shaft 41 so as to hold the drum 43 and motor 40 above the floor surface, e.g. the rig floor 12 .
  • a braking system 49 is positioned on a side of the drum 43 opposite the motor 40 .
  • the braking system 49 has a brake disk 51 positioned adjacent the drum 43 .
  • the braking system 49 in FIG. 2 is water-cooled.
  • a power supply 48 is connected to the permanent magnet motor 40 so as to supply power thereto.
  • the permanent magnet motor 40 rotates the shaft 41 which rotates the drum 43 .
  • the rotation of the drum 43 causes the wire line 24 to be extended or retracted depending upon the direction of rotation of the drum 43 .
  • the wire line 24 wraps around the outer surface of the drum 43 .
  • a longitudinal axis of the drum 43 is aligned with a longitudinal axis of the shaft 41 .
  • the longitudinal axes of the drum 43 and shaft 41 are generally parallel to the rig floor 12 .
  • the permanent magnet motor 40 has a housing 42 .
  • a rotor and stator are located within the housing 42 , as is described in more detail hereinafter.
  • the housing 42 has a generally cylindrical shape.
  • the housing 42 has an inlet 55 and an outlet 57 .
  • air is passed into the inlet 55 , circulated in the interior of the housing 42 , and discharged through the outlet 57 .
  • a cover 50 is affixed to the top surface 44 of the housing 42 .
  • the disk 51 of the braking system 49 is positioned adjacent the drum 43 inside the cradle 53 .
  • the drum 43 is shaped like a yarn spool so as to efficiently store long lengths of wire.
  • the drum 43 has a wire line wrapped therearound.
  • the rotation of the drum 43 serves to pay in and pay out this wire line.
  • the wire line extends from the drum 43 in the manner described herein previously in connection with FIG. 1 .
  • the rotation of the drum 43 as caused by the permanent magnet motor 40 , can cause the wire line to pay in and pay out for the purpose of lifting or lowering the traveling block.
  • FIG. 4 there is shown a cross-sectional view of the housing 42 of the permanent magnet motor 40 .
  • the housing 42 defines an interior chamber 60 .
  • the shaft 41 extends outwardly of the interior 60 of the housing 42 of the permanent magnet motor 40 .
  • a stator 62 is affixed to the wall of the housing 42 .
  • the stator 62 extends around the circular interior of the housing 42 .
  • a rotor 64 is positioned in close proximity to the stator 62 .
  • Rotor 64 has a plurality of permanent magnets formed around a periphery thereof (described in more detail hereinafter).
  • the stator 62 has coils of wire positioned around the inner surface of the stator 62 .
  • the interaction of the coils of the stator 62 and the permanent magnets of the rotor 64 provides the rotational power of the permanent magnet motor 40 .
  • a drive plate 66 is affixed to the top of the rotor 64 .
  • the shaft 41 is engaged with the drive plate 66 so that the rotational energy imparted to drive plate 66 by the rotor 64 will be imparted to the shaft 41 .
  • the shaft 41 extends outwardly from the interior chamber 60 of the housing 42 .
  • An end of the cradle 53 can be seen as positioned between the bearing housing 45 and the motor 40 .
  • the shaft 41 extends through the motor 40 , the cradle 53 , and the bearing housing 45 .
  • Permanent magnet motors rotate because of the torque that the interaction of two magnetic fields causes. These magnetic fields are created by the permanent magnets mounted on the rotating rotor and the magnetic field that the stationary windings of the stator induce. The torque is greatest when the magnetic vector of the rotor is at 90° to the magnetic vector of the stator. In this position, it forces the poles of the rotor to rotate in the direction of the stator field.
  • a current flow alternating sequentially through two of the three coils generates the stator field. The remaining third coil monitors the back EMF (electromotive force) of the two active coils. Back EMF occurs when a permanent magnet motor rotates.
  • Each winding generates a voltage that opposes the main voltage of the windings.
  • Back EMF depends on the angular velocity of the rotor, the magnetic field that the rotor magnets generate, and the number of turns in the stator windings.
  • the motor's back EMF provides the feedback of the rotor's position with respect to the stator windings.
  • Permanent magnet motors having sensors provide a similar position feedback. With sinusoidal commutation, which permanent magnet synchronous motors use, the drive-control circuitry simultaneously powers the three coils.
  • Permanent magnet motors have been commercially available since the 1990's. However, permanent magnet motors have not seen widespread use because of the high cost associated with the expensive permanent magnets on the rotor. Additionally, their complex control algorithms require specialized engineering expertise as well as the additional expense of an embedded processor. Permanent magnet motors are more efficient than the AC-induction motors. However, because of the recent rise in the price of copper, the current winding-based induction motors have become more costly and the permanent magnet motors have become comparatively less expensive. Additionally, recent advances in technology have improved the power output of permanent magnet motors to where such motors have a superior power density to that of existing induction motors. As such, the permanent magnet motor 40 , as illustrated in FIG. 4 , provides superior power output for the direct drive of the shaft 41 and drum 43 of the drawworks 100 .
  • FIG. 5 there is shown a plan view of the drive plate 66 of the permanent magnet motor 40 of the drawworks 100 of the present invention.
  • the drive plate 66 has a circular shape with an outer periphery 90 .
  • Bolt holes 92 are formed adjacent to the outer periphery 90 .
  • the bolt holes 92 allow for the bolted attachment of the drive plate 66 to the top of the rotor.
  • a splined aperture 94 is formed centrally of the drive plate 66 so as to accommodate the spline of the shaft 41 .
  • Air circulation holes 96 are formed around the interior of the drive plate 66 . The holes 96 facilitate air circulation within the permanent magnet motor 40 .
  • FIG. 6 there is shown a isolated perspective view of the rotor 64 of the permanent magnet motor 40 of the drawworks 100 of the present invention.
  • the drive plate 66 can be mounted directly onto the top of the rotor 64 .
  • Permanent magnet piles are affixed to the outer surface of the rotor 64 in spaced relationship to each other.
  • Spacers 106 serve to isolate one of the permanent magnet piles from an adjacent pile. Spacers 106 can be separate items or they can be simply a formed surface on the outer periphery on the rotor 64 .
  • the rotor 64 has a rotor bearing bore 110 formed centrally thereof.
  • FIG. 7 there is shown a isolated perspective view of the stator 62 of the permanent magnet motor 40 of the drawworks 100 of the present invention.
  • the stator 62 has an outer cover 120 which serves to space the coils 122 from the inner wall of the housing 42 .
  • the coils 122 extend radially inwardly therefrom.
  • the interior surface 124 of the coils 122 define a circular aperture into which the rotor 64 is placed.
  • the permanent magnet piles 104 are in close proximity to the coils 122 so that the permanent magnet motor 40 can operate properly.
  • Suitable electronics are connected to the permanent magnet motor 40 so as to facilitate the proper operation of the permanent magnet motor 40 .
  • the permanent magnet direct drive drawworks 100 is directly connected to the shaft 41 . As such, there are no gears or other transmission mechanisms that are interconnected in these areas.
  • the drawworks 100 thus provides an enhanced power density for the proper rotation of the drillstring in a relatively lightweight configuration.
  • the weight associated with transmission systems is effectively avoided by the present invention.
  • the complexity of installing such transmission systems so that the power of the induction motor can be transmitted to the drive system is avoided in the present invention.
  • the permanent magnet direct drive drawworks of the present invention can serve the proper purpose of rotating the drillstring with a minimal weight. Unlike the present motors associated with drilling operations that can weigh in excess of 100,000 pounds, the permanent magnet motor of the present invention will only weigh approximately 60,000 pounds.
  • the motor 40 does not have to be assembled by itself or with the transmission system in the field.
  • the present invention avoids the specialized requirement of installation personnel that would be otherwise required for those systems that require transmissions between the motor and the drawworks.
  • the reduced weight of the permanent magnet motor of the present invention avoids certain inertial effects that would otherwise adversely affect the operation of conventional induction motors.
  • the motor 40 of the present invention can be interchanged, as desired, for use in association with the direct drive top drive of the drilling rig or the mud pump of the drilling rig. Since transmission systems are not required, a supply of such permanent magnet motors can be provided to the drilling operation for use either in association with a drawworks or for other purposes. If there would be a failure of any one motor, then any of the other motors could be substituted therefore without any downtime on the drilling rig.
  • FIG. 8 shows a diagram of the permanent magnet direct drive drawworks 200 in accordance with the teachings of the present invention.
  • the permanent magnet direct drive drawworks 200 includes a permanent magnet motor 202 having a first set of windings and a second set of windings.
  • the winding diagram showing the first set of windings and the second set of windings, is provided in FIG. 8 .
  • a shaft will extend from the permanent magnet motor in the manner described herein previously such that the permanent magnet motor 202 directly rotates the shaft.
  • a drum is connected to the shaft away from the permanent magnet motor in the manner described herein previously. As such, rotation of the shaft will cause a corresponding rotation of the drum.
  • a switch 204 is cooperative with the first set of windings and the second set of windings so as to cause the sets of windings to be selectively connected in parallel or in series.
  • the parallel connection of the windings is illustrated in FIG. 10 herein.
  • the series connection of windings is illustrated in FIG. 11 herein.
  • FIG. 8 several switching devices 206 , 208 and 210 are electrically connected to the permanent magnet motor 202 .
  • Each of the switches 204 , 206 , 208 and 210 can utilize a suitable processor so as to cause the switching action to occur.
  • FIG. 8 it can be seen that there is a three phase AC power supply 212 .
  • the switching device 204 is electrically connected along lines 214 , 216 and 218 to the respective phases of the power supply 212 .
  • a main disconnect switch 220 is positioned on lines 214 , 216 and 218 so as to selectively allow for a disconnection of the permanent magnet motor 202 from the power supply 212 .
  • a variable frequency drive system 222 is also connected to lines 214 , 216 and 218 .
  • a DC link load bank 224 provides power to the variable frequency drive system.
  • a resistive load bank 226 is electrically connected by lines 228 , 230 and 232 to respective lines 214 , 216 and 218 .
  • a main motor disconnect switch 234 is provided on lines 214 , 216 and 218 .
  • the main motor disconnect means will connect the permanent magnet motor 202 to the resistive load bank 226 .
  • the bypass line 236 will cause the switches 238 to close so as to establish an electrical pathway between the resistive load bank 226 and the permanent magnet motor 202 .
  • the resistive load bank 226 can have dynamic braking resistors therein.
  • FIG. 9 is a schematic winding diagram showing the first set of windings 250 and the second set windings 252 .
  • FIG. 10 shows the connections between the first set of windings 250 and the second set of windings 252 when in a parallel connection.
  • FIG. 11 shows the connections between the first set of windings 250 and the second set of windings 252 when in a series connection.
  • the windings 250 and 252 have been provided in a configuration such that these can be connected for a nominal base voltage when in a series connection or connected for a nominal voltage of half that amount when placed in a parallel connection.
  • These connections are selectable by manual selector switches, such as switches 204 , 206 , 208 or 210 . Alternatively, they can be automatically chosen by way of a computer or by a processor controlled through the drilling control system.
  • the frequency When connected in a parallel arrangement, such as illustrated in FIG. 10 , the frequency is increased to twice nominal. With rated current and nominal voltage applied, twice the nominal speed is achieved at the nominal power rating. In this manner, an effective two speed permanent magnet direct drive drawworks is achieved. Overspeed conditions above twice normal are still achievable based upon the particular drive manufacture's drive characteristics and performance.
  • the present invention utilizes an overspeed detector to open the power supply (i.e. the variable frequency drive system power circuit) and to instantaneously apply the dynamic braking resistors of the load bank 226 in order to absorb the kinetic energy of the rotating drum of the winch or drawworks that are produced from the potential energy of a weight or a load.
  • an overspeed detector to open the power supply (i.e. the variable frequency drive system power circuit) and to instantaneously apply the dynamic braking resistors of the load bank 226 in order to absorb the kinetic energy of the rotating drum of the winch or drawworks that are produced from the potential energy of a weight or a load.
  • a maximum safe or speed limiter is provided relative to the associated load of the weight.
  • stator power terminals are immediately disconnected through power switches and connected to the load bank 226 or resistor network in order to absorb the lowering power and limit the top speed or maximum speed of the falling load.
  • the typical overspeed devices that can sense these conditions can be encoders, mechanically-activated inertia switches, and similar devices. Due to the inherent characteristics of the field flux that is produced by the permanent magnet direct drive motor 202 , this dynamic braking utilizes the driving motor itself as the braking device. As such, this limits equipment damage and increases personnel safety.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Dc Machiner (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Earth Drilling (AREA)
US12/876,673 2008-12-22 2010-09-07 Two speed direct drive drawworks Abandoned US20110309315A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US12/876,673 US20110309315A1 (en) 2008-12-22 2010-09-07 Two speed direct drive drawworks
CA2810646A CA2810646C (fr) 2010-09-07 2011-09-07 Treuil de forage a entrainement direct a deux vitesses
CN2011800532421A CN103221630A (zh) 2010-09-07 2011-09-07 双速直接驱动绞车
PCT/US2011/050622 WO2012033793A2 (fr) 2010-09-07 2011-09-07 Treuil de forage à entraînement direct à deux vitesses
US13/821,300 US9022358B2 (en) 2010-09-07 2011-09-07 Two speed direct drive drawworks
NO20130388A NO20130388A1 (no) 2010-09-07 2013-03-18 Tohastighets direktedrevet heiseverk

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US14002408P 2008-12-22 2008-12-22
US12/643,439 US8672059B2 (en) 2008-12-22 2009-12-21 Permanent magnet direct drive drawworks
US12/876,673 US20110309315A1 (en) 2008-12-22 2010-09-07 Two speed direct drive drawworks

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US12/643,439 Continuation-In-Part US8672059B2 (en) 2008-12-22 2009-12-21 Permanent magnet direct drive drawworks

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US12/876,673 Abandoned US20110309315A1 (en) 2008-12-22 2010-09-07 Two speed direct drive drawworks
US13/821,300 Active US9022358B2 (en) 2010-09-07 2011-09-07 Two speed direct drive drawworks

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CN (1) CN103221630A (fr)
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100329905A1 (en) * 2008-12-02 2010-12-30 Williams Kevin R Permanent magnet direct drive mud pump
US20110073297A1 (en) * 2008-12-22 2011-03-31 Williams Kevin R Permanent magnet direct drive drawworks
US20110253455A1 (en) * 2008-11-14 2011-10-20 Williams Kevin R Permanent magnet direct drive top drive
US20150263575A1 (en) * 2014-03-13 2015-09-17 Canrig Drilling Technology Ltd. Low Inertia Direct Drive Drawworks
US9634599B2 (en) 2015-01-05 2017-04-25 Canrig Drilling Technology Ltd. High speed ratio permanent magnet motor
CN107323617A (zh) * 2017-06-24 2017-11-07 中船澄西船舶修造有限公司 移动磁吸附高效带缆机
US9819236B2 (en) 2014-02-03 2017-11-14 Canrig Drilling Technology Ltd. Methods for coupling permanent magnets to a rotor body of an electric motor
US9871427B2 (en) 2013-03-15 2018-01-16 Ingersoll-Rand Company Stator winding for an electric motor
US9919903B2 (en) 2014-03-13 2018-03-20 Nabors Drilling Technologies Usa, Inc. Multi-speed electric motor
US10150659B2 (en) 2014-08-04 2018-12-11 Nabors Drilling Technologies Usa, Inc. Direct drive drawworks with bearingless motor
CN109969945A (zh) * 2019-04-30 2019-07-05 哈尔滨三跃驱动技术股份有限公司 一种具有容错功能的一体化起重机用永磁直驱提升系统
US10377490B1 (en) * 2015-06-26 2019-08-13 Amazon Technologies, Inc. Maneuvering a package following in-flight release from an unmanned aerial vehicle (UAV)
CN111119725A (zh) * 2020-02-18 2020-05-08 北京探矿工程研究所 一种多频电机直接驱动顶部驱动钻井装置及其驱动方法
US11585204B2 (en) * 2020-05-26 2023-02-21 Heath Poulson Crowding avoidance apparatus and method
WO2024065058A1 (fr) * 2022-09-28 2024-04-04 Sparta Engineering Inc. Ensemble moteur électrique rétro-adaptable et système de treuil de forage électrique le comprenant
WO2024127951A1 (fr) * 2022-12-14 2024-06-20 株式会社オートネットワーク技術研究所 Dispositif de commutation d'enroulement

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012224188A1 (de) * 2012-12-21 2014-06-26 Wobben Properties Gmbh Verfahren zur Steuerung eines Wasserschütz-Antriebs für ein Wasserschütz mit einer elektrischen Maschine, Betriebsschaltung, Wasserschütz-Antrieb und Wasserkraftanlage
CA2941463C (fr) * 2014-03-12 2018-09-11 Canrig Drilling Technology Ltd. Moteur electrique multi-vitesse
DE102015102140A1 (de) * 2015-02-13 2016-08-18 Terex MHPS IP Management GmbH Anordnung aus einem elektrischen Antriebsmotor, einem Getriebe und einem Drehgeber, insbesondere für einen Seilzug
RU2577515C1 (ru) * 2015-04-27 2016-03-20 Александр Сергеевич Карандаев Устройство управления двухскоростным электродвигателем дутьевого вентилятора
KR101779098B1 (ko) * 2015-10-30 2017-09-18 한국생산기술연구원 2중 드럼 및 와이어 꼬임 방지 기능을 가지는 드로웍스
CN107500166B (zh) * 2017-08-14 2019-05-14 海鹰企业集团有限责任公司 水文绞车控制系统
CN109319677A (zh) * 2017-12-21 2019-02-12 士商（上海）机械有限公司 一种电动绞盘
US20190309583A1 (en) * 2018-04-10 2019-10-10 Cameron International Corporation Direct Drive Systems
EP4087811A4 (fr) * 2020-01-07 2024-02-21 Allied Motion Technologies Inc. Systèmes et procédés pour un treuil à double mode
CN111181312B (zh) * 2020-02-18 2025-08-19 北京探矿工程研究所 一种多频电机直接驱动钻井绞车装置及其直接驱动方法
US11472681B2 (en) 2020-07-21 2022-10-18 Schlumberger Technology Corporation Direct drive drawworks
CA3169380A1 (fr) * 2022-03-23 2023-09-23 Zhejiang Nowvow Mechanical and Electrical Corp., Ltd. Treuil integre a un moteur sans balai a aimant permanent et a un controleur
IT202300014637A1 (it) * 2023-07-12 2025-01-12 Systemitalia S R L Sistema per il collaudo contemporaneo di tutte le macchine critiche operanti sugli impianti di perforazione petrolifera

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6094024A (en) * 1998-07-29 2000-07-25 Westlake; J. Fred Dynamic braking system for a motorized lifting mechanism
US6577483B1 (en) * 2000-09-27 2003-06-10 Rockwell Automation Technologies, Inc. Dynamic braking method and apparatus
US20060181238A1 (en) * 2005-02-14 2006-08-17 Lg Electronics Inc. Variable speed motor
US7228942B2 (en) * 2004-02-06 2007-06-12 Paceco Corp. Method for energy storage for DC motor powered load hoisting machinery
US20080265813A1 (en) * 2007-04-30 2008-10-30 Powerohm Resistors, Inc Dynamic braking load analyzer
US20110241592A1 (en) * 2006-10-05 2011-10-06 Astro General Corporation Ltd. Adaptive winding system and control method for electric machines
US20110295269A1 (en) * 2008-09-23 2011-12-01 Ethicon Endo-Surgery, Inc. Robotically-controlled motorized surgical instrument

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965404A (en) * 1973-08-17 1976-06-22 Cordem Corporation Apparatus and method of braking a universal motor for operating a compact winch
DE2730142C2 (de) * 1977-07-04 1988-01-21 Papst-Motoren GmbH & Co KG, 7742 St Georgen Kollektorloser Gleichstrommotor der zweisträngigen Bauart
CN1056964A (zh) * 1990-05-25 1991-12-11 何涛清 电动车辆专用双特性电动机
US5848634A (en) * 1996-12-27 1998-12-15 Latron Electronics Co. Inc. Motorized window shade system
NO311200B1 (no) 1999-05-25 2001-10-22 Smart Motor As Elektrisk maskin
DE20000913U1 (de) * 2000-01-20 2001-03-01 Bentec GmbH Drilling & Oilfield Systems, 48455 Bad Bentheim Getriebehebewerk
US6995682B1 (en) * 2000-10-30 2006-02-07 Ramsey Winch Company Wireless remote control for a winch
FR2821024B1 (fr) 2001-02-20 2003-06-13 Leroy Somer Moteurs Element d'entrainement tel qu'une roue motrice ou un treuil de levage, comportant un moteur synchrone
KR20050108881A (ko) * 2004-05-14 2005-11-17 동아전기부품 주식회사 과부하시 블로워모터 보호기능을 갖는 다단 저항기
US7348703B2 (en) * 2004-08-20 2008-03-25 Dumitru Bojiuc Monopole field electric motor-generator with switchable coil configuration
US7556241B2 (en) * 2006-08-28 2009-07-07 Geagan Michael J Power-assisted winch and method
US7862009B2 (en) * 2006-11-22 2011-01-04 Victory Rig Equipment Corporation Electric winch motor
US20080203734A1 (en) * 2007-02-22 2008-08-28 Mark Francis Grimes Wellbore rig generator engine power control
US7868510B2 (en) * 2007-03-30 2011-01-11 Rittenhouse Norman P High-efficiency wheel-motor utilizing molded magnetic flux channels with transverse-flux stator
US7633248B1 (en) 2007-05-18 2009-12-15 Williams Kevin R Flywheel-based energy storage on a heave-compensating drawworks
CN201063468Y (zh) * 2007-06-05 2008-05-21 上海星之辰电气传动技术有限公司 带切换机构的电机绕组
DE102007040725A1 (de) * 2007-08-29 2009-03-05 Robert Bosch Gmbh Elektrische Maschine
DE602008004568D1 (de) * 2008-11-10 2011-02-24 Abb Oy Verholwinde und Verfahren zur Steuerung eines Seils einer Verholwinde

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6094024A (en) * 1998-07-29 2000-07-25 Westlake; J. Fred Dynamic braking system for a motorized lifting mechanism
US6577483B1 (en) * 2000-09-27 2003-06-10 Rockwell Automation Technologies, Inc. Dynamic braking method and apparatus
US7228942B2 (en) * 2004-02-06 2007-06-12 Paceco Corp. Method for energy storage for DC motor powered load hoisting machinery
US20060181238A1 (en) * 2005-02-14 2006-08-17 Lg Electronics Inc. Variable speed motor
US20110241592A1 (en) * 2006-10-05 2011-10-06 Astro General Corporation Ltd. Adaptive winding system and control method for electric machines
US20080265813A1 (en) * 2007-04-30 2008-10-30 Powerohm Resistors, Inc Dynamic braking load analyzer
US20110295269A1 (en) * 2008-09-23 2011-12-01 Ethicon Endo-Surgery, Inc. Robotically-controlled motorized surgical instrument

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110253455A1 (en) * 2008-11-14 2011-10-20 Williams Kevin R Permanent magnet direct drive top drive
US8567529B2 (en) * 2008-11-14 2013-10-29 Canrig Drilling Technology Ltd. Permanent magnet direct drive top drive
US20100329905A1 (en) * 2008-12-02 2010-12-30 Williams Kevin R Permanent magnet direct drive mud pump
US20110073297A1 (en) * 2008-12-22 2011-03-31 Williams Kevin R Permanent magnet direct drive drawworks
US8672059B2 (en) 2008-12-22 2014-03-18 Canrig Drilling Technology Ltd. Permanent magnet direct drive drawworks
US9871427B2 (en) 2013-03-15 2018-01-16 Ingersoll-Rand Company Stator winding for an electric motor
US9819236B2 (en) 2014-02-03 2017-11-14 Canrig Drilling Technology Ltd. Methods for coupling permanent magnets to a rotor body of an electric motor
US20150263575A1 (en) * 2014-03-13 2015-09-17 Canrig Drilling Technology Ltd. Low Inertia Direct Drive Drawworks
US9379584B2 (en) * 2014-03-13 2016-06-28 Canrig Drilling Technology Ltd. Low inertia direct drive drawworks
US9919903B2 (en) 2014-03-13 2018-03-20 Nabors Drilling Technologies Usa, Inc. Multi-speed electric motor
US10003229B2 (en) * 2014-03-13 2018-06-19 Nabors Drilling Technologies Usa, Inc. Low inertia direct drive drawworks
US10150659B2 (en) 2014-08-04 2018-12-11 Nabors Drilling Technologies Usa, Inc. Direct drive drawworks with bearingless motor
US9634599B2 (en) 2015-01-05 2017-04-25 Canrig Drilling Technology Ltd. High speed ratio permanent magnet motor
US10377490B1 (en) * 2015-06-26 2019-08-13 Amazon Technologies, Inc. Maneuvering a package following in-flight release from an unmanned aerial vehicle (UAV)
CN107323617A (zh) * 2017-06-24 2017-11-07 中船澄西船舶修造有限公司 移动磁吸附高效带缆机
CN109969945A (zh) * 2019-04-30 2019-07-05 哈尔滨三跃驱动技术股份有限公司 一种具有容错功能的一体化起重机用永磁直驱提升系统
CN111119725A (zh) * 2020-02-18 2020-05-08 北京探矿工程研究所 一种多频电机直接驱动顶部驱动钻井装置及其驱动方法
US11585204B2 (en) * 2020-05-26 2023-02-21 Heath Poulson Crowding avoidance apparatus and method
US20230167730A1 (en) * 2020-05-26 2023-06-01 Heath Poulson Crowding avoidance apparatus and method
US11725495B2 (en) * 2020-05-26 2023-08-15 Heath Poulson Crowding avoidance apparatus and method
WO2024065058A1 (fr) * 2022-09-28 2024-04-04 Sparta Engineering Inc. Ensemble moteur électrique rétro-adaptable et système de treuil de forage électrique le comprenant
WO2024127951A1 (fr) * 2022-12-14 2024-06-20 株式会社オートネットワーク技術研究所 Dispositif de commutation d'enroulement

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CN103221630A (zh) 2013-07-24
US20130240808A1 (en) 2013-09-19
WO2012033793A2 (fr) 2012-03-15
NO20130388A1 (no) 2013-04-05
WO2012033793A3 (fr) 2012-05-31
WO2012033793A8 (fr) 2013-04-25
CA2810646A1 (fr) 2012-03-15
CA2810646C (fr) 2018-04-10
US9022358B2 (en) 2015-05-05

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