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WO2010057762A2 - Dispositif pour réguler une machine asynchrone a double alimentation - Google Patents

Dispositif pour réguler une machine asynchrone a double alimentation Download PDF

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Publication number
WO2010057762A2
WO2010057762A2 PCT/EP2009/064365 EP2009064365W WO2010057762A2 WO 2010057762 A2 WO2010057762 A2 WO 2010057762A2 EP 2009064365 W EP2009064365 W EP 2009064365W WO 2010057762 A2 WO2010057762 A2 WO 2010057762A2
Authority
WO
WIPO (PCT)
Prior art keywords
attenuator
converter
network
rotor
current
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.)
Ceased
Application number
PCT/EP2009/064365
Other languages
German (de)
English (en)
Other versions
WO2010057762A3 (fr
Inventor
Stephan Engelhardt
Joerg Kretschmann
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.)
Woodward SEG GmbH and Co KG
Original Assignee
Woodward SEG GmbH and Co KG
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
Application filed by Woodward SEG GmbH and Co KG filed Critical Woodward SEG GmbH and Co KG
Priority to BRPI0921504A priority Critical patent/BRPI0921504A2/pt
Priority to CN200980146138.XA priority patent/CN102334276B/zh
Priority to CA2743676A priority patent/CA2743676A1/fr
Priority to EP09744398.0A priority patent/EP2351204B8/fr
Priority to AU2009317447A priority patent/AU2009317447A1/en
Publication of WO2010057762A2 publication Critical patent/WO2010057762A2/fr
Priority to US13/111,339 priority patent/US8653683B2/en
Anticipated expiration legal-status Critical
Publication of WO2010057762A3 publication Critical patent/WO2010057762A3/fr
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/007—Control circuits for doubly fed generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
    • F03D9/257—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor the wind motor being part of a wind farm
    • 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
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
    • H02P9/105—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for increasing the stability
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/96—Mounting on supporting structures or systems as part of a wind turbine farm
    • H02J2101/28—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • H02P2101/00—Special adaptation of control arrangements for generators
    • H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Definitions

  • the invention relates to a device for controlling a double-fed asynchronous machine, preferably for a power generation plant, in particular for a wind or
  • Hydroelectric power plant with a DC link converter, which is connected to the rotor side of the double-fed asynchronous machine, wherein the DC link converter has a rotor-side and a network-side converter, and at least one control element for controlling the
  • the invention also relates to a method for controlling a double-fed asynchronous machine, preferably for a power generation plant.
  • the invention further relates to a computer program, a computer program product, and a wind or hydroelectric power plant for generating electrical energy with a double-fed asynchronous machine.
  • Double-fed asynchronous machines are usually used in systems with variable rotor speed, especially in wind or water power plants.
  • the rotor voltage can be regulated so that the frequency and the phase position of the stator voltage remain constant despite the variable rotor speed.
  • the stator can thus be connected directly or via a transformer to the grid.
  • the relevant standards for the limits of harmonic feedback affect the use of Net filtering required for the double feed system. Depending on the impedance of the network and the design of the line filter, this results in resonance properties of the control path, which can lead in some cases to an instability of the entire system of control path and control system, both the control system for the rotor-side converter and the control system for the mains side inverter concerns.
  • the present invention is therefore based on the object to provide a device for controlling a double-fed asynchronous available, in which the attenuation can be adapted to changing resonance characteristics.
  • the damping properties of the at least one attenuator in the frequency range up to 2000 Hz, preferably up to 1200 Hz are variably adjustable. It has been shown that critical resonances of a system with a doubly fed Asynchronous machine and a regulated DC link converter in the frequency range up to 2000 Hz, in particular to 1200 Hz occur. The limitation of the frequency range allows the use of simple and inexpensive attenuators.
  • a particularly simple and inexpensive attenuator is achieved in a preferred embodiment of the device in that the hardware-based attenuator has at least one resistive and / or an inductive component, which is variable in their impedance.
  • the embodiment with either a resistive or an inductive component, which is variable in its impedance a particularly simple and inexpensive variant.
  • the attenuator has a capacitive component, which is variable in their impedance.
  • the at least one resistive and / or inductive component has a plurality of taps or taps.
  • the size of the resistor or the inductor can be the same or different sizes at the different taps or taps and the taps or taps can be connected variably depending on the desired damping properties. In this way it is achieved in a particularly simple way that the attenuator has variable damping properties. So the damping properties can be easily adjusted by the choice of taps or the taps of the resistor or the inductance can be influenced.
  • the adaptation of the damping properties to changed resonance properties of the network is achieved in a further preferred embodiment of the device in that a software-based network-side and / or rotor-side attenuator is provided, which generates a damping signal.
  • This software-based adjustment of the damping properties makes it possible to adapt to changed network properties particularly easily and quickly. Net properties are understood in particular to be the resonant properties of the network.
  • the use of either a software-based rotor-side damping element or a software-based network-side damping element is particularly simple, since only one damping element has to be adapted.
  • the use of a software-based rotor-side damping element and a software-based network-side damping element leads to a particularly effective damping, since the system is attenuated both the rotor side and the network side.
  • means are provided which generate the control signal fed into the converter in series or in parallel from the control signal generated by the control element and the attenuation signal.
  • the actuating signal is understood to mean the signal with which the mains-side and / or rotor-side converter is controlled. For example, in parallel generation, a
  • Addition module may be provided, in which the control signal and the attenuation signal are added.
  • the serial Generation of the control signal is the control signal as the input of the attenuation signal or vice versa.
  • a further preferred embodiment of the device is achieved in that means are provided by which the stator current i s , the stator voltage u s , the current of the rotor-side converter iusc r the mains current i G and / or the mains voltage u G are determined and as input variables be available on the rotor-side attenuator. It has been shown that these input variables are particularly well suited for generating the rotor-side damping signal, in particular because of their frequency responses.
  • the current of the rotor-side converter or the stator current is preferably selected.
  • the device means are provided, through which the current of the line side inverter i L sc r the mains current i G , the mains voltage u G , the voltage of the network-side inverter branch of the three-phase transformer u tr , L sc and / or the stator voltage u s are determined and are available as input variables at the line-side attenuator. It has been found that these input variables are particularly well suited for generating the line-side attenuation signal, in particular because of their frequency responses.
  • the current of the network-side converter i LS c is preferably selected.
  • a particularly good adaptation of the damping properties of the at least one attenuator is achieved in a further embodiment of the device in that means are provided with which the controlled system of the DC link converter in a frequency range up to 2000 Hz, preferably to 1200 Hz can be excited.
  • the controlled system of the DC link converter Under the controlled system of the DC link converter, the system of the double-fed asynchronous machine, the DC link converter, the associated control element, and possibly other connected components understood.
  • the excitation of the controlled system makes it possible to measure the resonance characteristics of this system based on the response of the system to this excitation.
  • the excitation is preferably carried out in the frequency range up to 2000 Hz, in particular up to 1200 Hz, since in this region, as a rule, particularly critical resonances of the system occur.
  • a frequency generator or a pulse generator For the excitation of the controlled system is particularly suitable a frequency generator or a pulse generator.
  • the damping function can be calculated for at least one attenuator.
  • the result sizes i. the response of the system, from the measurement of the resonance characteristics described above.
  • Damping function for example on an additional computer, is required.
  • a microprocessor module which preferably contains an electronic memory with commands whose execution by the
  • Microprocessor causes the calculation of the damping function.
  • This embodiment is particularly advantageous in Combination with the features of the embodiment, in which means are provided with which the controlled system of the DC link converter can be excited in a frequency range up to 2000 Hz, preferably up to 1200 Hz.
  • means are provided with which the controlled system of the DC link converter can be excited in a frequency range up to 2000 Hz, preferably up to 1200 Hz.
  • the resonance properties of the system are determined, from which then with the means for calculating the damping function, a suitable damping function can be calculated directly.
  • An effective damping of resonances is achieved in a further preferred embodiment of the device in that at least one attenuator causes a phase shift, which leads to an attenuation.
  • At least one attenuator effects a constant additional phase advance substantially over the entire frequency range up to 2000 Hz, preferably up to 1200 Hz.
  • This embodiment has the advantage that the improvement of the stability properties in a larger frequency range is effected in such a way that in many cases an individual adaptation of the software-based attenuator to the respective different resonant properties of the network is superfluous and instead a constant parameterization of the network Software-based attenuator is possible for most network configurations and features. In this way it is also possible to compensate dead times of the control element.
  • the adaptation of the damping properties is characterized in a further preferred embodiment of the device thereby simplifies that at least one attenuator is provided which has unchangeable damping properties. In this way, resonances that are only weakly dependent on the network properties can be damped. This ensures that the attenuator, which has variable attenuation properties, only needs to be adjusted for the remaining resonances. This allows the use of simpler attenuators.
  • the adaptation of the damping properties is carried out in each case after a change in the network properties.
  • the change of network properties can be reacted immediately.
  • the replacement of hardware-based network filters with a fixed frequency-dependent attenuation is therefore avoided.
  • a particularly effective and rapid damping of the resonances in the system is in a further preferred Embodiment of the method achieved in that the controlled system in the frequency range up to 2000 Hz, preferably excited to 1200 Hz, measured the response function of the controlled system and at least one attenuator is adjusted in response to the response function.
  • the controlled system in the frequency range up to 2000 Hz, preferably excited to 1200 Hz, measured the response function of the controlled system and at least one attenuator is adjusted in response to the response function.
  • the attenuator can be adjusted easily and quickly.
  • the method can be used once when the installation is installed, regularly at intervals or as needed, and that the damping of the resonances in the system is optimized.
  • stator current i s the stator voltage u s , the current of the rotor-side converter i-wsc r, the current of the network-side converter i L sc ? the voltage of the mains side
  • a particularly effective damping of the resonances is achieved by calculating the attenuation signal in dq coordinates moving along with the mains frequency. In this way, the steady state of the control, that is, the state in which only the mains frequency occurs, at 0 Hz. The transfer function can then in be simply chosen so that the attenuation at this frequency is zero.
  • control signal fed to the converter on the network side and / or rotor side is generated from an attenuation signal and the network-side and / or rotor-side control signal, in particular by addition, wherein an attenuator is optionally provided for generating the attenuation signal.
  • a particularly simple loading of the system with the attenuation signal is achieved in a further preferred embodiment of the method in that the combination, in particular the addition of the attenuation signal with the control signal takes place in quiescent ab coordinates.
  • the control signal is usually already present in ab coordinates and thus no transformation of the control signal is required in another coordinate system.
  • the object underlying the invention is also achieved by a computer program, wherein the computer program has instructions whose execution causes a processor to carry out the method according to the invention for controlling a double-fed asynchronous machine.
  • Attenuators are very well suited for implementation on a microprocessor, for example as Input variables are the stator current i s , the stator voltage u s , the current of the rotor-side converter I MSC / the current of the network-side converter i ⁇ sc ⁇ the voltage of the network-side inverter branch of the three-phase transformer u tr , L sc r the mains current i G and / or the mains voltage U G receives and as
  • Output signal outputs the attenuation signal.
  • a subsequent adaptation of the damping function is possible. This can be done, for example, at fixed intervals or as needed.
  • the object underlying the invention is also solved by a computer program product, wherein the computer program product contains a computer program with instructions whose execution causes a processor to carry out the method according to the invention.
  • Computer program product may for example be a removable disk, such as a memory card, a floppy disk or a CD on which at least one computer program is stored with the instructions for carrying out the method according to the invention.
  • the object underlying the invention is finally achieved by a wind or hydroelectric power plant for generating electrical energy with a double-fed asynchronous machine, in which a device according to the invention is provided.
  • FIG. 1 is a block diagram of a first
  • Embodiment of a device according to the invention for controlling a double-fed asynchronous machine Embodiment of a device according to the invention for controlling a double-fed asynchronous machine
  • Fig. 2 is a block diagram of a second
  • Embodiment of a device according to the invention for controlling a double-fed asynchronous machine Embodiment of a device according to the invention for controlling a double-fed asynchronous machine
  • FIG. 3 shows a diagram with the step response for a third exemplary embodiment of a transfer function
  • FIG. 4 is a diagram with the frequency response of the amplitude of the embodiment of Fig. 3,
  • FIG. 5 is a diagram with the frequency response of the phase of the embodiment of Fig. 3,
  • Fig. 6 is a block diagram of a fourth
  • Fig. 7 is a block diagram of a fifth embodiment for carrying out a
  • Fig. 8 is a block diagram of an embodiment of a wind farm with wind turbines with a Device according to the invention for controlling a double-fed asynchronous machine.
  • the double-fed asynchronous machine 4 is arranged in a system 2, wherein the system is a DC link converter 6, a control element 8, a throttle 10th , an optional transformer 12 and a network 14.
  • the double-fed asynchronous machine 4 can be used for example in a wind power plant or a hydroelectric power plant for generating electrical energy. It has a rotor 16 and a stator 18.
  • the DC-link converter 6 has a rotor-side converter 20, a DC-link 22 and a mains-side converter 24, wherein the rotor-side converter 20 is electrically connected to the DC-link 22 and the DC-link 22 to the mains-side converter 24.
  • the rotor 16 is electrically connected to the rotor-side converter 20.
  • the throttle 10 is electrically connected to the network-side converter 24 and the stator 18.
  • the control element 8 has a rotor-side control element 28 and a network-side control element 30. The control signals are generated in the control element 8 in resting ab coordinates. For the control of the rotor-side converter, therefore, a transformation into rotor-fixed abR coordinates with an ab / abR converter 32 is necessary.
  • the input variable of the rotor position necessary for this transformation is determined via a rotary knife 62 connected to the rotor 16 and forwarded to the ab / abR converter 32 via a value transmitter 64 connected thereto.
  • the abR / 3P converter 34 transforms the control signal from the abR Coordinate system in the three-phase 3P coordinate system.
  • the ab / 3P converter 36 transforms the control signal directly from the down to the 3P coordinate system.
  • the system 2 described so far represents the prior art. According to the present embodiment of the invention
  • a software-based attenuator 40 and an optional hardware-based attenuator 44 are shown.
  • the hardware-based attenuator 44 may be configured, for example, like the attenuator shown in FIG.
  • a net filter 42 is provided with immovable damping properties.
  • the software-based attenuator 40 has a rotor-side attenuator 46 and a stator-side
  • Attenuator 48 on.
  • the measured variables mains current i G 52, stator voltage u s 54, stator current i s 56, the current of the rotor-side converter i m sc 58 and the current of the line-side converter i LSC 60 are each provided with a 3P / a-converter 61 or with a 3P / abR converter 63 and an abR / ab-converter 65 first transformed into quiescent ab coordinates.
  • the stator voltage u s is further transformed via an ab / polar converter 66 into the polar coordinate system.
  • the values for the mains current i G , the stator current i s , the rotor current i M sc and the inductor current i LS c are further transformed by the ab / dq converter 66 from the ab coordinate system into the dq coordinate system rotating at line frequency.
  • the necessary for this transformation value of the phase of the stator voltage is passed from the ab / polar converter 66 to all ab / dq converter 68.
  • Stator voltage u G , the stator current i s and the current of the rotor-side inverter i M sc are available as inputs on Rotor-side attenuator 46 at.
  • the rotor-side dubbing element has modules 70, 72, 74 and 76, in each of which one of the applied input variables is fed in and with the aid of an associated transfer function the respective output variable is calculated.
  • the module 70 determines from the input of the mains current i G with the discrete-time transfer function G lG , r [z] an associated output.
  • the module 72 calculated according to G u s, r [z] from the stator voltage u s , the module 74 according to G lS , r [z] from the stator current i s and the module 76 corresponding to G lM sc, r [z] the current of the rotor-side inverter i MSC the respective output variable.
  • the transfer functions are preferably chosen such that the resonances of the system 2 are attenuated on the rotor side by the attenuator 46.
  • the signals calculated in the modules 70, 72, 74 and 76 are selectively added.
  • the selection of the signals is performed by the block 78. In the selection, for example, the network conditions and the available sensors are taken into account. In this way, the generation of the attenuation signal can be adapted to the input variables with the best transmission characteristics.
  • the rotor-side damping signal is then transformed from synchronous dq coordinates into ab coordinates, so that it can be added in the addition module 82 to the signal of the rotor-side control element 28, which is likewise present in coordinates. In this way, the control signal of the control element 28 is actively influenced directly in order to change the damping properties.
  • the values of the grid current i G 52, the stator voltage Us 54 and the current of the grid-side converter i L sc 60 are applied as input to the modules 84, 86 and 88.
  • the module 84 determines from the input variable mains current i G with the discrete-time transfer function Gi G , s [z] an associated output variable.
  • the module 86 calculates the respectively associated output variable in accordance with G u s, s [s] from the stator voltage u s and the module 88 corresponding to Gi L sc, s [ z ] from the current of the line-side converter i LS c.
  • the transfer functions are chosen so that the resonances of the system 2 are attenuated by the attenuator 48 on the network side.
  • the signals calculated in the modules 84, 86 and 88 are selectively added.
  • the signals are selected by block 90, which is comparable to block 78.
  • the network-side attenuation signal is then transformed into coordinates using a dq / ab converter 69, so that it is in addition module 94 to the signal of the network-side also present in ab coordinates Control element 30 can be added.
  • FIG. 2 shows the block diagram of a second embodiment of a device according to the invention for controlling a double-fed asynchronous machine 4.
  • the second embodiment is particularly suitable for large megawatt wind turbines.
  • a three-winding transformer 100 is used to connect the doubly fed asynchronous machine 4 to the grid. This is the illustrated
  • Embodiment also suitable for the delivery of very high electrical power.
  • a further filter 102 is connected in the stator branch.
  • the further filter may include, for example, a hardware-based attenuator with fixed damping characteristics.
  • the voltage of the network-side inverter branch u tr , Lsc 106 is tapped and transformed via two transducers 36, 68 into dq coordinates.
  • the mains voltage uG 50 is transformed via two transducers 36, 38 in dq coordinates.
  • a further signal is generated with the transfer function G U G, r [z] and the mains voltage u G , which can be added to the previously described signals of the rotor-side attenuator 46 selectively.
  • the network-side attenuator 48 is expanded by two further selectively addable signals. These are on the one hand from mains voltage uG and the transfer function G UG , S [Z] in module 110, and on the other hand from the voltage of the network-side inverter branch of the three-phase transformer u tr , L sc and the transfer function G u tr, Lsc, s [z ] signal generated in module 112.
  • mains voltage uG and the transfer function G UG , S [Z] in module 110
  • an optional excitation member 114 is further provided, which can alternatively be connected to another location.
  • the excitation member has a signal generator which can generate a signal in a frequency range up to 2000 Hz, preferably up to 1200 Hz, and thus can excite the controlled system of the DC link converter.
  • the excitation member 114 may further comprise measuring devices, which the
  • the excitation element 114 may, for example, an electronic circuit, in particular a microprocessor and a memory containing instructions that calculate from the measured response function of the controlled system new transfer functions for the modules 70, 72, 74, 76, 84, 88, 108, 110 and in feed them via an electrical data link (not shown).
  • V_ V-e ' ⁇ (2)
  • C 1 and D k are selectable complex parameters and V is a selectable complex overall gain.
  • the associated attenuator causes an attenuation of resonances or instabilities, which arises in the system 2 through the interaction of the control 8 with the network 14 and the line filter (not shown).
  • an attenuator having a modulus with a transfer function according to equation (1) is suitable with the following parameters:
  • Fig. 3 the step response for this module is shown.
  • On the abscissa is the time t in seconds, on the ordinate is the voltage U in p.u. specified.
  • the input quantity E is switched from 0 to the value 0.3 at a time to and then remains constant.
  • the output A then shows a damped, oscillating course. After 0.02 seconds, A has almost completely subsided. It thus turns out that the corresponding module has a stable step response. This is advantageous because it prevents in this way that additional instabilities are introduced into the system 2 by the attenuator.
  • Fig. 4 shows the frequency response of the amplitude of the attenuator.
  • the frequency f is in hertz
  • the amount G of the amplitude in p.u. specified is the amount of the amplitude in p.u. specified. It can be seen that the amplitude in the range of about 600 to about 1000 Hz has a significant output.
  • Fig. 5 the associated phase response is shown over the frequency.
  • the abscissa shows the frequency f in Hertz, the ordinate the phase ⁇ in degrees.
  • the steady state of the control corresponds to 0 Hz in the dq coordinate system.
  • the attenuator is designed in such a way that no output variable is generated at 0 Hz. This does not affect the standard closed-loop control. In the active frequency range of Attenuation contributes to a significant stabilization of the overall system.
  • the amplitude and the phase position of the attenuation signal can be adjusted.
  • FIG. 6 shows an exemplary embodiment of a hardware-based attenuator 120.
  • a hardware-based attenuator 120 In each of the three phase branches, it has a resistor 128 with different taps, an inductance 130 with different taps, and a capacitance 132. This makes it possible to adapt the attenuation behavior to different circumstances.
  • the capacity 132 could have different taps or different capacities could be kept.
  • FIG. 7 is a block diagram of an embodiment for the execution of a method for controlling a double-fed induction machine with a
  • Computer program represented by a processor The computer program is initially stored on a data carrier 160 and is loaded into the memory 162 via a suitable data carrier reading device (not shown).
  • the memory 162 is connected to a processor unit 164 having a processor that executes the instructions stored in the computer program.
  • the processor unit furthermore has one or more inputs 166 via which input variables can reach the processor unit 164.
  • the processor unit 164 also has at least one or more outputs 168.
  • the required for the modules 70, 72, 74, 76, 84, 88, 108, 110 outputs can be calculated.
  • the transfer function G (z) associated with the module is implemented in the computer program.
  • the processor unit 164 receives the input associated with the module, which computes the associated output by executing the instructions of the computer program in the processor unit 164.
  • new transfer functions for the modules 70, 72, 76, 84, 88, 108, 110 can also be calculated by implementing in the computer program an algorithm which determines the response function of the controlled system caused by the exciter 114 for calculating the uses new transfer functions.
  • the processor unit 164 receives the response function of
  • FIG. 8 shows a wind farm with several wind turbines 186, which are equipped with a device 190 according to the invention and are connected to a grid 184 via a common connection point 191.
  • the device 190 according to the invention it is also conceivable to install the device 190 according to the invention not in each individual wind energy plant 186 but in the common connection point 191.
  • the resonant characteristics of this system may be affected by the network characteristics of the network 184. But you can also change, for example, if another wind turbine to the node 191 is connected or an existing wind turbine 186 is disconnected from the node 191.
  • the device 190 according to the invention can be adapted to the new resonance characteristics.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

L'invention concerne un dispositif pour réguler une machine asynchrone (4) à double alimentation, utilisé de préférence pour une centrale de production d'énergie électrique, en particulier pour une éolienne ou une centrale hydroélectrique, comprenant un convertisseur indirect (6), lequel est accouplé côté rotor à la machine asynchrone (4) à double alimentation, le convertisseur indirect (6) présentant un convertisseur (20) côté rotor et un convertisseur (24) côté réseau, et au moins un élément de régulation (8) destiné à réguler le convertisseur indirect (6). Au moins un élément d'atténuation (40, 46, 48, 120) fondé sur un logiciel et/ou un matériel est utilisé et il présente des propriétés d'atténuation modifiables, L'invention concerne également un dispositif et un procédé de régulation d'une machine asynchrone (4) à double alimentation comprenant un convertisseur (6) indirect, selon lequel des propriétés de réseau sont déterminées en particulier mesurées, les éléments d'atténuation (40, 46, 48, 120) fondés sur un logiciel ou du matériel présentant des propriétés d'isolation modifiables, ces propriétés d'au moins un élément d'atténuation (40, 46, 48, 120) fondé sur un logiciel et/ou un matériel pouvant être modifiées ultérieurement. L'invention concerne également un programme d'ordinateur, un produit de programme d'ordinateur, ainsi qu'une éolienne ou une centrale hydroélectrique destinées à produire de l'énergie électrique à l'aide d'une machine asynchrone à double alimentation.
PCT/EP2009/064365 2008-11-19 2009-10-30 Dispositif pour réguler une machine asynchrone a double alimentation Ceased WO2010057762A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BRPI0921504A BRPI0921504A2 (pt) 2008-11-19 2009-10-30 dispositivo para controlar uma máquina assíncrona de dupla alimentação
CN200980146138.XA CN102334276B (zh) 2008-11-19 2009-10-30 用于调节双馈异步电机的装置
CA2743676A CA2743676A1 (fr) 2008-11-19 2009-10-30 Dispositif pour reguler une machine asynchrone a double alimentation
EP09744398.0A EP2351204B8 (fr) 2008-11-19 2009-10-30 Dispositif de commande d'une machine à induction à double alimentation
AU2009317447A AU2009317447A1 (en) 2008-11-19 2009-10-30 Device for regulating a double-fed asynchronous machine
US13/111,339 US8653683B2 (en) 2008-11-19 2011-05-19 Device for controlling a double-fed asynchronous machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008037566A DE102008037566A1 (de) 2008-11-19 2008-11-19 Vorrichtung zur Regelung einer doppelt gespeisten Asynchronmaschine
DE102008037566.7 2008-11-19

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/111,339 Continuation US8653683B2 (en) 2008-11-19 2011-05-19 Device for controlling a double-fed asynchronous machine

Publications (2)

Publication Number Publication Date
WO2010057762A2 true WO2010057762A2 (fr) 2010-05-27
WO2010057762A3 WO2010057762A3 (fr) 2011-07-21

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PCT/EP2009/064365 Ceased WO2010057762A2 (fr) 2008-11-19 2009-10-30 Dispositif pour réguler une machine asynchrone a double alimentation

Country Status (8)

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US (1) US8653683B2 (fr)
EP (1) EP2351204B8 (fr)
CN (1) CN102334276B (fr)
AU (1) AU2009317447A1 (fr)
BR (1) BRPI0921504A2 (fr)
CA (1) CA2743676A1 (fr)
DE (1) DE102008037566A1 (fr)
WO (1) WO2010057762A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008007448A1 (de) * 2008-02-01 2009-08-13 Woodward Seg Gmbh & Co. Kg Verfahren zum Betreiben einer Windenergieanlage
DE102012224067A1 (de) * 2012-12-20 2014-06-26 Senvion Se Windenergieanlage und Verfahren zum Regeln des elektrischen Moments einer Windenergieanlage bei einem Netzfehler
DE102018103996A1 (de) * 2018-02-22 2019-08-22 Innogy Se Reduzierung von Oberwellen in Stromnetzen
CN114094889B (zh) * 2021-10-14 2023-10-20 东方电气风电股份有限公司 一种双馈异步发电机等效电路及其分析计算方法
CN114427514B (zh) * 2022-01-18 2024-06-21 武汉理工大学 用于抑制系统低频振荡的双馈风机本地阻尼控制系统
CN115333104A (zh) * 2022-07-13 2022-11-11 中国电建集团华东勘测设计研究院有限公司 一种适用于海上风场谐波特性动态变化的新型滤波器及设计方法

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US6566764B2 (en) * 2000-05-23 2003-05-20 Vestas Wind Systems A/S, R&D Variable speed wind turbine having a matrix converter
DE10344392A1 (de) * 2003-09-25 2005-06-02 Repower Systems Ag Windenergieanlage mit einem Blindleistungsmodul zur Netzstützung und Verfahren dazu
DE102004013131A1 (de) * 2004-03-17 2005-10-06 Siemens Ag Windkraftanlage
AT504818A1 (de) * 2004-07-30 2008-08-15 Windtec Consulting Gmbh Triebstrang einer windkraftanlage
DE102004060943A1 (de) * 2004-12-17 2006-07-06 Repower Systems Ag Windparkleistungsregelung und -verfahren
ES2296483B1 (es) * 2005-11-21 2009-03-01 Ingeteam Technology, S.A. Un sistema de control y proteccion ante faltas simetricas y asimetricas, para generadores de tipo asincrono.
US7345373B2 (en) * 2005-11-29 2008-03-18 General Electric Company System and method for utility and wind turbine control
US7253537B2 (en) * 2005-12-08 2007-08-07 General Electric Company System and method of operating double fed induction generators
ES2291103B1 (es) * 2005-12-30 2009-02-01 Universidad Publica De Navarra Metodo y sistema de control del convertidor de una instalacion de generacion electrica conectada a una red electrica ante la presencia de huecos de tension en dicha red.
ES2411383T3 (es) * 2007-04-30 2013-07-05 Vestas Wind Systems A/S Turbina eólica de velocidad variable con generador de inducción doblemente alimentado compensado para variar la velocidad de rotor
CN101141111B (zh) * 2007-09-07 2010-07-28 浙江大学 一种双馈异步风力发电机转子电流无延时控制方法
DE102007044601A1 (de) * 2007-09-19 2009-04-09 Repower Systems Ag Windpark mit Spannungsregelung der Windenergieanlagen und Betriebsverfahren
DE102007060958A1 (de) * 2007-12-14 2009-06-25 Repower Systems Ag Steuereinrichtung für Windenergieanlagen mit Netzausfallerkennung

Also Published As

Publication number Publication date
EP2351204B8 (fr) 2015-11-04
US8653683B2 (en) 2014-02-18
AU2009317447A1 (en) 2010-05-27
US20110260454A1 (en) 2011-10-27
CN102334276B (zh) 2015-06-10
CN102334276A (zh) 2012-01-25
CA2743676A1 (fr) 2010-05-27
BRPI0921504A2 (pt) 2016-03-15
WO2010057762A3 (fr) 2011-07-21
DE102008037566A1 (de) 2010-05-27
EP2351204B1 (fr) 2015-08-05
EP2351204A2 (fr) 2011-08-03

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