CN105835703B - A kind of subway traction convertor main circuit - Google Patents
A kind of subway traction convertor main circuit Download PDFInfo
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- CN105835703B CN105835703B CN201610185288.3A CN201610185288A CN105835703B CN 105835703 B CN105835703 B CN 105835703B CN 201610185288 A CN201610185288 A CN 201610185288A CN 105835703 B CN105835703 B CN 105835703B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/32—Control or regulation of multiple-unit electrically-propelled vehicles
- B60L15/38—Control or regulation of multiple-unit electrically-propelled vehicles with automatic control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/493—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
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- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/04—Arrangements for controlling or regulating the speed or torque of more than one motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/30—AC to DC converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
- H02M1/346—Passive non-dissipative snubbers
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Inverter Devices (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Multiple Motors (AREA)
Abstract
The present invention relates to the traction converter plant of subway, specially a kind of subway traction convertor main circuit.A kind of subway traction convertor main circuit, including input voltage and input current buffer circuit, voltage sensor, Support Capacitor, the first chopper circuit, the second chopper circuit, the first inverter, the second inverter, first contactor circuit, second contactor circuit, the first condenser network and the second condenser network.The present invention proposes a kind of subway traction convertor main circuit; with energy saving, fever is few; protective capability is strong, good reliability and the advantages that suitable for various modes operation, solves the problems, such as that the current transformer calorific value of existing control permanent magnet synchronous motor is big, thermal losses is high, of high cost.
Description
Technical field
The present invention relates to metro traction converter plant, specially a kind of subway traction convertor main circuit.
Background technology
Permanent magnet synchronous motor with its high efficiency, low-loss, it is light-weight the advantages that be widely used in recent years,
And it has been applied in metro traction system.Traction convertor is the core component of railcar, performance it is good
The bad operation for directly influencing vehicle.Traction convertor is generally by input voltage and input current buffer circuit, busbar voltage link, copped wave
The compositions such as unit and inversion unit.The subway main circuit of converter of existing control permanent magnet synchronous motor mostly uses 3 phase bridge arms control 1
Permanent magnet synchronous motors control 4 motors and need 12 bridge arms, 24 IGBT, cause that traction convertor calorific value is big, thermal losses
It is high, of high cost.Permanent magnet synchronous motor will produce counter electromotive force when dragged, can be generated not to current transformer under some conditions
Good influence.
Invention content
The present invention permanent magnet synchronous motor subway current transformer calorific value is big, thermal losses is high, IGBT is of high cost in order to optimize and
Permanent magnet synchronous motor leads to the problem of high counter electromotive force when dragged, provides a kind of subway traction convertor main circuit.
The present invention adopts the following technical scheme that realization：A kind of subway traction convertor main circuit, including input
Voltage and current buffer circuit, voltage sensor, Support Capacitor, the first chopper circuit, the second chopper circuit, the first inverter,
Two inverters, first contactor circuit, second contactor circuit, the first condenser network and the second condenser network；Input voltage electricity
The input terminal for flowing buffer circuit is connected with net pressure one end, and the output end of input voltage and input current buffer circuit is connected to busbar VDC+,
The net pressure other end is connected to busbar VDC-；Voltage sensor, Support Capacitor are connected between busbar VDC+ and busbar VDC-, and first
Chopper circuit, the first condenser network and the first inverter are connected between busbar VDC+ and busbar VDC-, the second copped wave electricity
Road, the second condenser network and the second inverter are connected between busbar VDC+ and busbar VDC-, and the first condenser network is by going here and there
Two capacitances connect are constituted, and the second condenser network is made of two capacitances concatenated, and the tie point between two capacitances is exported as a phase
End, the first inverter have the output of tetra- tunnel U1, U2, V1, V2, the first inverter there are four IGBT bridge arms, the second inverter have U3,
Tetra- tunnel U4, V3, V4 exports, and for the second inverter there are four IGBT bridge arms, the first condenser network has the output of mono- tunnels N1, the second capacitance electricity
There is the output of mono- tunnels N2 on road, and the first inverter, the first condenser network pass through first contactor circuit and permanent magnet synchronous motor motor1
It is connected with permanent magnet synchronous motor motor2, the second inverter, the second condenser network pass through second contactor circuit and permanent-magnet synchronous
Motor motor3 is connected with permanent magnet synchronous motor motor4.
Input voltage and input current buffer circuit in the present invention ensures current transformer in initial power-on, and di/dt was unlikely to
Greatly, reduce the damage of device；Connection Support Capacitor in busbar voltage link, reduces the ripple in busbar voltage；Busbar
Chopper circuit on voltage is open-minded under certain operating mode so that the energy of a part of busbar voltage of resistance consumption on chopper circuit
Amount, to stabilized busbar voltage；Two groups of inverter parallels are in busbar voltage, two permanent magnet synchronous electrics of every group of Driven by inverter
Machine；Every group of inverter is made of 4 IGBT bridge arms, this 4 bridge arms respectively have 2 to be separately connected two motors.The present invention can use
16 IGBT, 8 bridge arms control 4 permanent magnet synchronous motors, have saved the quantity of IGBT, not only reduced cost, but also reduce
The total losses of IGBT, reduce the fever inside current transformer.
A kind of above-mentioned subway traction convertor main circuit, input voltage and input current buffer circuit include first switch K1,
One end of second switch K2 and first resistor R1, first switch K1 connect with one end of second switch K2 and as input terminals, and
The other end of one switch K1 is connected by first resistor R1 with the other end of second switch K2, the other end conduct of second switch K2
Output end.
A kind of above-mentioned subway traction convertor main circuit, the first chopper circuit include IGBT device S17, the first electric current
The collector of sensor TA1, second resistance R2 and first crystal diode D1, IGBT device S17 are connected with busbar VDC+, IGBT
The emitter of device S17 is connected with one end of second resistance R2, is also connected with the cathode of first crystal diode D1, second resistance
The other end of R2 is connected with the anode of first crystal diode D1, and the anode of first crystal diode D1 is connected with busbar VDC-,
First current sensor TA1 is serially connected on the emitter of IGBT device S17 and the connection line of second resistance R2；Second copped wave electricity
Road includes IGBT device S18, the 8th current sensor TA8, the 9th resistance R9 and the second crystal diode D2, IGBT device S18
Collector connected with busbar VDC+, the connection of one end of emitter and the 9th resistance R9, also and the moon of the second crystal diode D2
Pole connects, the anode connection of the other end of the 9th resistance R9 and the second crystal diode D2, the anode of the second crystal diode D2
It is connected with busbar VDC-, the 8th current sensor TA8 is serially connected in the connection line of IGBT device S18 and the 9th resistance R9.
A kind of above-mentioned subway traction convertor main circuit, first contactor circuit include first contactor SK1, second
Contactor SK2, third contactor SK3, the 4th contactor SK4, the 5th contactor SK5, the 6th contactor SK6, the 13rd contact
Device SK13, the 14th contactor SK14,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance
R7 and the 8th resistance R8, the output U1 of the first inverter are connected to 1 end of first contactor SK1,3 ends of first contactor SK1
Be connected to one end of the 5th resistance R5,4 ends of first contactor SK1 are connected to the U phases of motor motor1, the first inverter it is defeated
Go out 1 end that V1 is connected to second contactor SK2,3 ends of second contactor SK2 are connected to one end of the 4th resistance R4, and second connects
4 ends of tentaculum SK2 are connected to the V phases of motor motor1, and the output U2 of the first inverter is connected to 1 end of the 4th contactor SK4,
3 ends of 4th contactor SK4 are connected to one end of the 6th resistance R6, and 4 ends of the 4th contactor SK4 are connected to motor motor2's
U phases, the output V2 of the first inverter are connected to 1 end of the 5th contactor SK5, and 3 ends of the 5th contactor SK5 are connected to the 7th electricity
One end of R7 is hindered, 4 ends of the 5th contactor SK5 are connected to the V phases of motor motor2, and the output N1 of the first condenser network is connected to
1 end of 13rd contactor SK13,3 ends of the 13rd contactor SK13 are connected to the output U2 of the first inverter 5, and the 13rd connects
4 ends of tentaculum SK13 are connected to 1 end of third contactor SK3, and 3 ends of third contactor SK3 are connected to the one of 3rd resistor R3
End, 4 ends of third contactor SK3 are connected to the W phases of motor motor1, and the output N1 of the first condenser network is connected to the 14th and connects
3 ends at 1 end of tentaculum SK14, the 14th contactor SK14 are connected to the output V1 of the first inverter, the 14th contactor SK14
4 ends be connected to 1 end of the 6th contactor SK6,3 ends of the 6th contactor SK6 are connected to one end of the 8th resistance R8, and the 6th connects
4 ends of tentaculum SK6 are connected to the W phases of motor motor2,3rd resistor R3, the 4th resistance R4 and the 5th resistance R5 other end phase
Even, the other end of the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8 are connected；
Second contactor circuit includes the 7th contactor SK7, the 8th contactor SK8, the 9th contactor SK9, the tenth contact
Device SK10, the 11st contactor SK11, the 12nd contactor SK12, the 15th contactor SK15, the 16th contactor SK16,
Ten resistance R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the 14th resistance R14 and the 15th resistance
R15, the output U3 of the second inverter are connected to 1 end of the 7th contactor SK7, and 3 ends of the 7th contactor SK7 are connected to the 12nd
4 ends of one end of resistance R12, the 7th contactor SK7 are connected to the U phases of motor motor3, the output V3 connections of the second inverter
It is connected to one end of eleventh resistor R11, the 8th contactor to 3 ends at 1 end of the 8th contactor SK8, the 8th contactor SK8
4 ends of SK8 are connected to the V phases of motor motor3, and the output U4 of the second inverter is connected to 1 end of the tenth contactor SK10, the
3 ends of ten contactor SK10 are connected to one end of thirteenth resistor R13, and 4 ends of the tenth contactor SK10 are connected to motor
The U phases of motor4, the output V4 of the second inverter are connected to 1 end of the 11st contactor SK11, and the 3 of the 11st contactor SK11
End is connected to one end of the 14th resistance R14, and 4 ends of the 11st contactor SK11 are connected to the V phases of motor motor4, the second electricity
The output N2 of capacitive circuit is connected to 1 end of the 15th contactor SK15, and 3 ends of the 15th contactor SK15 are connected to the second inversion
4 ends of the output U4, the 15th contactor SK15 of device are connected to 1 end of the 9th contactor SK9, and 3 ends of the 9th contactor SK9 connect
It is connected to one end of the tenth resistance R10,4 ends of the 9th contactor SK9 are connected to the W phases of motor motor3, the second condenser network
Output N2 is connected to 1 end of the 16th contactor SK16, and 3 ends of the 16th contactor SK16 are connected to the output of the second inverter
4 ends of V3, the 16th contactor SK16 are connected to 1 end of the 12nd contactor SK12, the 3 ends connection of the 12nd contactor SK12
To one end of the 15th resistance R15,4 ends of the 12nd contactor SK12 are connected to the W phases of motor motor4, the tenth resistance R10,
Eleventh resistor R11 is connected with the other end of twelfth resistor R12, thirteenth resistor R13, the 14th resistance R14 and the 15th
The other end of resistance R15 is connected.
The present invention proposes a kind of subway traction convertor main circuit, by using suitable control on this main circuit
Algorithm and modulation algorithm can use 16 IGBT to control 4 motors, have that energy saving, fever is few, and protective capability is strong and good reliability
The advantages that, optimize the problem that the existing current transformer calorific value for controlling permanent magnet synchronous motor is big, thermal losses is high, of high cost.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Fig. 2 is the circuit structure diagram of voltage and current buffer circuit.
Fig. 3 is the circuit structure diagram of the first chopper circuit.
Fig. 4 is the circuit structure diagram of the second chopper circuit.
Fig. 5 is the circuit structure diagram of the first inverter.
Fig. 6 is the circuit structure diagram of first contactor circuit.
In figure：1- input voltage and input current buffer circuits, 2- voltage sensors, 3- Support Capacitors, the first chopper circuits of 4-, 5-
First inverter, 6- first contactor circuits, the second chopper circuits of 7-, the second inverters of 8-, 9- second contactor circuits, 10-
First condenser network, the second condenser networks of 11-.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of subway traction convertor main circuit, including input voltage and input current buffer circuit 1, voltage pass
Sensor 2, Support Capacitor 3, the first chopper circuit 4, the second chopper circuit 7, the first inverter 5, the contact of the second inverter 8, first
Device circuit 6, second contactor circuit 9, the first condenser network 10 and the second condenser network 11.
Power supply anode P is connected to the ends A of voltage and current buffer circuit 1, the ends the B connection of voltage and current buffer circuit 1
Onto busbar VDC+, power supply negative terminal N is connected on busbar VDC-.The ends A of voltage sensor 2 are connected to busbar VDC+, electricity
The ends B of pressure sensor 2 are connected to voltage VDC-.The ends A of Support Capacitor 3 are connected to busbar VDC+, and the ends B of Support Capacitor 3 connect
It is connected to voltage VDC-.Busbar voltage VDC+ is connected to the ends A of the first chopper circuit 4, and busbar voltage VDC- is connected to the first copped wave
The ends B of circuit 4.Busbar voltage VDC+ is connected to the ends A of the second chopper circuit 7, and busbar voltage VDC- is connected to the second copped wave electricity
The ends B on road 7.Busbar voltage VDC+ is connected to the ends A of the first condenser network, and busbar voltage VDC- is connected to the first condenser network
The ends B, busbar voltage VDC+ are connected to the ends A of the second condenser network, and busbar voltage VDC- is connected to the ends B of the second condenser network.
Busbar voltage VDC+ is connected to the ends A of the first inverter 5, and busbar voltage VDC- is connected to the ends B of the first inverter 5.Busbar electricity
Pressure VDC+ is connected to the ends A of the second inverter 8, and busbar voltage VDC- is connected to the ends B of the second inverter 8.
N1 is connected to 1 end of the 13rd contactor SK13, and U2 is connected to 3 ends of the 13rd contactor SK13, and the 13rd connects
4 ends of tentaculum SK13 are W1.N1 is connected to 1 end of the 14th contactor SK14, and V1 is connected to the 3 of the 14th contactor SK14
4 ends at end, the 14th contactor SK14 are W2.U1 is connected to 1 end of first contactor SK1, and 4 ends of first contactor SK1 connect
It is connected to the U phases of motor Motor1.V1 is connected to 1 end of second contactor SK2, and 4 ends of second contactor SK2 are connected to motor
The V phases of Motor1.W1 is connected to 1 end of third contactor SK3, and 4 ends of third contactor SK3 are connected to the W of motor Motor1
Phase.U2 is connected to 1 end of the 4th contactor SK4, and 4 ends of the 4th contactor SK4 are connected to the U phases of motor Motor2.V2 connections
It is connected to the V phases of motor Motor2 to 4 ends at 1 end of the 5th contactor SK5, the 5th contactor SK5.W2 is connected to the 6th contact
4 ends at 1 end of device SK6, the 6th contactor SK6 are connected to the W phases of motor Motor2.Contactor is connected to the circuit of each phase of motor
There is Hall current sensor TA2---TA7 respectively to detect the phase current of motor.
N2 is connected to 1 end of the 15th contactor SK15, and U4 is connected to 3 ends of the 15th contactor SK15, and the 15th connects
4 ends of tentaculum SK15 are W3.N2 is connected to 1 end of the 16th contactor SK16, and V3 is connected to the 3 of the 16th contactor SK16
4 ends at end, the 16th contactor SK16 are W4.U3 is connected to 1 end of the 7th contactor SK7, and 4 ends of the 7th contactor SK7 connect
It is connected to the U phases of motor Motor3.V3 is connected to 1 end of the 8th contactor SK8, and 4 ends of the 8th contactor SK8 are connected to motor
The V phases of Motor3.W3 is connected to 1 end of the 9th contactor SK9, and 4 ends of the 9th contactor SK9 are connected to the W of motor Motor3
Phase.U4 is connected to 1 end of the tenth contactor SK10, and 4 ends of the tenth contactor SK10 are connected to the U phases of motor Motor4.V4 connects
It is connected to 1 end of the 11st contactor SK11,4 ends of the 11st contactor SK11 are connected to the V phases of motor Motor4.W4 is connected to
4 ends at 1 end of the 12nd contactor SK12, the 12nd contactor SK12 are connected to the W phases of motor Motor4.Contactor is connected to
The circuit of each phase of motor has Hall current sensor TA9---TA14 to detect the phase current of motor respectively.
The circuit structure of voltage and current buffer circuit 1 is as shown in Fig. 2, include first switch K1, second switch K2 and first
Resistance R1 compositions.One end of the connection of the ends A the first switch K1 and second switch K2 of voltage and current buffer circuit 1, first switch K1
Other end connection first resistor R1 one end, the other end of first resistor R1 and the other end of switch K2 are connected to first voltage
The ends B of current buffering circuit 1.
First chopper circuit 8 includes IGBT device S17, the first current sensor TA1, second resistance R2 and first crystal two
Pole pipe D1, as shown in Figure 3.The poles C of IGBT device S17 connect busbar voltage VDC+, the second electricity of the poles E connection of IGBT device S17
The cathode of the one end R2 and first crystal diode D1 is hindered, the poles G of IGBT device S17 connect IGBT drive signals, second resistance R2
The other end be connected with the anode of first crystal diode D1, and be connected to busbar voltage VDC-, the first current sensor TA1
Detection flows through the poles IGBT device S17E to the electric current of second resistance R2.
Second chopper circuit 9 includes IGBT device S18, the 8th current sensor TA8, the 9th resistance R9 and the second crystal two
Pole pipe D2, as shown in Figure 4.The poles C of IGBT device S18 connect busbar voltage VDC+, the 9th electricity of the poles E connection of IGBT device S18
The cathode of the one end R9 and diode D2 is hindered, the poles G of IGBT device S18 connect IGBT drive signals, the other end of the 9th resistance R9
It is connected with the anode of the second crystal diode D2, and is connected to busbar voltage VDC-, the 8th current sensor TA8 detections flows through
Electric current of the poles IGBT device S18E to resistance R9.
As shown in figure 5, being made of IGBT device S1---S8, IGBT drive signals are separately connected the structure of first inverter 5
To one end of IGBT S1---S8.Pwm signal occurs module and sends out the control signal for controlling motor, and IGBT drive module will
Control signal is handled.When two motor normal operations, pwm signal generation module sends out 8 suitable for Double Motor Control
Road pwm signal, when by an electrical fault, such as MOTOR1 failures, at this moment S1-S2IGBT locking pulses, pwm signal occur
The mode that module is modulated with single motor sends out the 6 road pwm signals controlled suitable for single motor, driving S3---S8 operations.
First contactor circuit 6 includes first contactor SK1, second contactor SK2, third contactor SK3, the 4th contact
Device SK4, the 5th contactor SK5, the 6th contactor SK6, the 13rd contactor SK13, the 14th contactor SK14,3rd resistor
R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8, structure is as shown in fig. 6, first
The output U1 of inverter 10 is connected to 1 end of first contactor SK1, and 3 ends of first contactor SK1 are connected to the 5th resistance R5's
4 ends of one end, first contactor SK1 are connected to the U phases of motor motor1, and the output V1 of the first inverter 10 is connected to second and connects
1 end of tentaculum SK2,3 ends of second contactor SK2 are connected to one end of the 4th resistance R4, the 4 ends connection of second contactor SK2
To the V phases of motor motor1, the output U2 of the first inverter 10 is connected to 1 end of the 4th contactor SK4, the 4th contactor SK4
3 ends be connected to one end of the 6th resistance R6,4 ends of the 4th contactor SK4 are connected to the U phases of motor motor2, the first inversion
The output V2 of device 10 is connected to 1 end of the 5th contactor SK5, and 3 ends of the 5th contactor SK5 are connected to the one of the 7th resistance R7
End, 4 ends of the 5th contactor SK5 are connected to the V phases of motor motor2, and the output N1 of the first condenser network 10 is connected to the 13rd
1 end of contactor SK13,3 ends of the 13rd contactor SK13 are connected to the output U2 of the first inverter 10, the 13rd contactor
4 ends of SK13 are connected to 1 end of third contactor SK3, and 3 ends of third contactor SK3 are connected to one end of 3rd resistor R3, the
4 ends of three contactor SK3 are connected to the W phases of motor motor1, and the output N1 of the first condenser network 10 is connected to the 14th contact
1 end of device SK14,3 ends of the 14th contactor SK14 are connected to the output V1 of the first inverter 10, the 14th contactor SK14
4 ends be connected to 1 end of the 6th contactor SK6,3 ends of the 6th contactor SK6 are connected to one end of the 8th resistance R8, and the 6th connects
4 ends of tentaculum SK6 are connected to the W phases of motor motor2,3rd resistor R3, the 4th resistance R4 and the 5th resistance R5 other end phase
Even, the other end of the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8 are connected.
The present invention timely can both protect system when failure occurs by the design of contactor circuit,
It can ensure the normal operation of railcar under some specific operating modes.1）When 4 motor normal operations, contactor SK1-
SK16 is closed to terminal 1, the normal dragging motor operation of current transformer.2）When railcar is in trailing state, in order to avoid
Influence of the dragged power generation of permanent magnet synchronous motor to current transformer, contactor SK1-SK16 are closed to terminal 2, are separated with current transformer.3）
When train operation is out of control, permanent magnet synchronous motor will produce larger back-emf voltage, and at this moment contactor SK1-SK12 conjunctions are arrived
Terminal 3, contactor SK13-SK16 are closed to terminal 1, the kinetic energy of train are consumed on resistance.4）It is controlled when in one group of inverter
System 1 electrical fault or only need rotate a motor when, by taking motor1 as an example, when motor1 failures or do not need it operate
Constantly, SK1-SK3 is closed to terminal 2, SK4-SK6 conjunctions to terminal 1, SK14 conjunctions to terminal 3.At this moment S3 and S4, S5 and S6, S7 and
The three-phase bridge arm that S8 is constituted can control motor2, and control mode is also just converted to the control of 3 bridge arms from 4 bridge arms control bi-motor
Single motor.
The present invention may be implemented to turn motor difference control model by the design of inverter circuit and contactor circuit
Become.Motor running mode 1 is that motor powers up the operational mode held under the connection type of midpoint in Bridge 2 arm.Motor running mode 2 is electricity
Operational mode of the machine under 3 bridge arms.The motor control algorithms and PWM modulation algorithm of operational mode 1 and operational mode 2 are different
's.Following table by taking inverter 5, contactor circuit 6, motor 1 and motor 2 as an example to bi-motor under different operational modes contactor
Control provides a brief description, but does not wrap the adaptable all operating modes of institute of the invention.The serial number connection of " 1-3 " under contactor
Pin.
| Serial number | motor1 | motor2 | SK1 | SK2 | SK3 | SK4 | SK5 | SK6 | SK13 | SK14 |
| 1 | Operational mode 1 | Operational mode 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 2 | Operational mode 1 | Failure/do not run | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 |
| 3 | Operational mode 2 | Failure/do not run | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 1 |
| 4 | Failure/do not run | Operational mode 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| 5 | Failure/do not run | Operational mode 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 3 |
| 6 | Failure/do not run | Failure/do not run | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 7 | Energy consumption pattern | Energy consumption pattern | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 |
The configuration of four motor control models can further be extended on the basis of above to Double Motor Control.The present invention can
By the flexible control to contactor, to realize operation of the motor under different operating modes, under different operational modes, very flexibly.
Claims (3)
1. a kind of subway traction convertor main circuit, it is characterised in that passed including input voltage and input current buffer circuit (1), voltage
Sensor (2), Support Capacitor (3), the first chopper circuit (4), the second chopper circuit (7), the first inverter (5), the second inverter
(8), first contactor circuit (6), second contactor circuit (9), the first condenser network (10) and the second condenser network (11)；It is defeated
The input terminal for entering voltage and current buffer circuit (1) is connected with net pressure one end, and the output end of input voltage and input current buffer circuit (1) connects
It is connected to busbar VDC+, the net pressure other end is connected to busbar VDC-；Voltage sensor (2), Support Capacitor (3) are connected to busbar VDC+
Between busbar VDC-, the first chopper circuit (4), the first condenser network (10) and the first inverter (5) are connected to busbar
Between VDC+ and busbar VDC-, the second chopper circuit (7), the second condenser network (11) and the second inverter (8) are connected to
Between busbar VDC+ and busbar VDC-, the first condenser network (10) is made of two capacitances, and the second condenser network (11) is by two capacitances
Constitute, the tie point between two capacitances as a phase output terminal, the first inverter (5) there are four IGBT bridge arms, have U1, U2,
Tetra- tunnel V1, V2 exports, and there are four IGBT bridge arms for the second inverter (8), there is the output of tetra- tunnel U3, U4, V3, V4, the first condenser network
(10) output of mono- tunnels N1, the second condenser network (11) have the output of mono- tunnels N2, the first inverter (5), the first condenser network pass through
First contactor circuit (6) is connected with motor motor1 with motor motor2, and the second inverter (8), the second condenser network pass through
Second contactor circuit (9) is connected with motor motor3 with motor motor4, wherein first contactor circuit（6）It is connect including first
Tentaculum SK1, second contactor SK2, third contactor SK3, the 4th contactor SK4, the 5th contactor SK5, the 6th contactor
SK6, the 13rd contactor SK13, the 14th contactor SK14,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th electricity
Hinder R6, the 7th resistance R7 and the 8th resistance R8, the first inverter（5）Output U1 be connected to 1 end of first contactor SK1,
3 ends of one contactor SK1 are connected to one end of the 5th resistance R5, and 4 ends of first contactor SK1 are connected to the U of motor motor1
Phase, the output V1 of the first inverter 5 are connected to 1 end of second contactor SK2, and 3 ends of second contactor SK2 are connected to the 4th electricity
One end of R4 is hindered, 4 ends of second contactor SK2 are connected to the V phases of motor motor1, the output U2 connections of the first inverter (5)
It is connected to one end of the 6th resistance R6 to 3 ends at 1 end of the 4th contactor SK4, the 4th contactor SK4, the 4th contactor SK4's
4 ends are connected to the U phases of motor motor2, and the output V2 of the first inverter 5 is connected to 1 end of the 5th contactor SK5, the 5th contact
3 ends of device SK5 are connected to one end of the 7th resistance R7, and 4 ends of the 5th contactor SK5 are connected to the V phases of motor motor2, and first
The output N1 of condenser network (10) is connected to 1 end of the 13rd contactor SK13, and 3 ends of the 13rd contactor SK13 are connected to
The output U2 of one inverter (5), 4 ends of the 13rd contactor SK13 are connected to 1 end of third contactor SK3, third contactor
3 ends of SK3 are connected to one end of 3rd resistor R3, and 4 ends of third contactor SK3 are connected to the W phases of motor motor1, the first electricity
The output N1 of capacitive circuit (10) is connected to 1 end of the 14th contactor SK14, and 3 ends of the 14th contactor SK14 are connected to first
4 ends of the output V1, the 14th contactor SK14 of inverter (5) are connected to 1 end of the 6th contactor SK6, the 6th contactor SK6
3 ends be connected to one end of the 8th resistance R8,4 ends of the 6th contactor SK6 are connected to the W phases of motor motor2,3rd resistor
The other end of R3, the 4th resistance R4 and the 5th resistance R5 is connected, and the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8's is another
End is connected；
Second contactor circuit（9）Including the 7th contactor SK7, the 8th contactor SK8, the 9th contactor SK9, the tenth contactor
SK10, the 11st contactor SK11, the 12nd contactor SK12, the 15th contactor SK15, the 16th contactor SK16, the tenth
Resistance R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the 14th resistance R14 and the 15th resistance
R15, the second inverter（8）Output U3 be connected to 1 end of the 7th contactor SK7,3 ends of the 7th contactor SK7 are connected to
4 ends of one end of 12 resistance R12, the 7th contactor SK7 are connected to the U phases of motor motor3, the second inverter（8）Output
V3 is connected to 1 end of the 8th contactor SK8, and 3 ends of the 8th contactor SK8 are connected to one end of eleventh resistor R11, and the 8th connects
4 ends of tentaculum SK8 are connected to the V phases of motor motor3, the second inverter（8）Output U4 be connected to the tenth contactor SK10's
3 ends at 1 end, the tenth contactor SK10 are connected to one end of thirteenth resistor R13, and 4 ends of the tenth contactor SK10 are connected to electricity
The U phases of machine motor4, the second inverter（8）Output V4 be connected to 1 end of the 11st contactor SK11, the 11st contactor
3 ends of SK11 are connected to one end of the 14th resistance R14, and 4 ends of the 11st contactor SK11 are connected to the V of motor motor4
Phase, the output N2 of the second condenser network (11) are connected to 1 end of the 15th contactor SK15,3 ends of the 15th contactor SK15
It is connected to the second inverter（8）4 ends of output U4, the 15th contactor SK15 be connected to 1 end of the 9th contactor SK9,
3 ends of nine contactor SK9 are connected to one end of the tenth resistance R10, and 4 ends of the 9th contactor SK9 are connected to the W of motor motor3
Phase, the output N2 of the second condenser network (11) are connected to 1 end of the 16th contactor SK16,3 ends of the 16th contactor SK16
It is connected to the second inverter（8）4 ends of output V3, the 16th contactor SK16 be connected to 1 end of the 12nd contactor SK12,
3 ends of 12nd contactor SK12 are connected to one end of the 15th resistance R15, and 4 ends of the 12nd contactor SK12 are connected to electricity
The W phases of machine motor4, the tenth resistance R10, eleventh resistor R11 are connected with the other end of twelfth resistor R12, thirteenth resistor
The other end of R13, the 14th resistance R14 and the 15th resistance R15 are connected.
2. a kind of subway traction convertor main circuit according to claim 1, it is characterised in that input voltage and input current is slow
Rush circuit（1）Including first switch K1, second switch K2 and first resistor R1, one end of first switch K1 and second switch K2's
One end connects and as input terminal, and the other end of first switch K1 is connected by the other end of first resistor R1 and second switch K2
It connects, the other end of second switch K2 is as output end.
3. a kind of subway traction convertor main circuit according to claim 1 or 2, it is characterised in that the first chopper circuit
（4）Including IGBT device S17, the first current sensor TA1, second resistance R2 and first crystal diode D1, IGBT device S17
Collector connected with busbar VDC+, the emitter of IGBT device S17 is connected with one end of second resistance R2, also and first crystal
The cathode of diode D1 connects, and the other end of second resistance R2 is connected with the anode of first crystal diode D1, first crystal two
The anode of pole pipe D1 is connected with busbar VDC-, and the first current sensor TA1 is serially connected in the emitter and the second electricity of IGBT device S17
In the connection line for hindering R2；Second chopper circuit（7）Including IGBT device S18, the 8th current sensor TA8, the 9th resistance R9
It is connected with busbar VDC+ with the collector of the second crystal diode D2, IGBT device S18, one end of emitter and the 9th resistance R9
Connection is also connected with the cathode of the second crystal diode D2, the sun of the other end of the 9th resistance R9 and the second crystal diode D2
Pole connects, and the anode of the second crystal diode D2 is connected with busbar VDC-, and the 8th current sensor TA8 is serially connected in IGBT device
In the connection line of S18 and the 9th resistance R9.
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| EP3729629B1 (en) * | 2017-12-19 | 2022-10-19 | Vestas Wind Systems A/S | A method for operating a plurality of chopper circuits |
| CN111162699B (en) * | 2018-11-08 | 2023-09-01 | 中车永济电机有限公司 | Large-power direct-drive permanent magnet electric transmission system for electric locomotive |
| CN111162696A (en) * | 2018-11-08 | 2020-05-15 | 中车永济电机有限公司 | Chopping control method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007318969A (en) * | 2006-05-29 | 2007-12-06 | Toshiba Corp | Electric vehicle control device |
| CN202713150U (en) * | 2012-07-11 | 2013-01-30 | 北京赛德高科铁道电气科技有限责任公司 | DC/DC chopper circuit for electric locomotive auxiliary converter cabinet |
| CN104836511A (en) * | 2015-02-17 | 2015-08-12 | 中国铁道科学研究院 | Traction inverter main circuit |
| US9231504B2 (en) * | 2012-05-15 | 2016-01-05 | Robert Lyle Fuller | Electrical control system |
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2016
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007318969A (en) * | 2006-05-29 | 2007-12-06 | Toshiba Corp | Electric vehicle control device |
| US9231504B2 (en) * | 2012-05-15 | 2016-01-05 | Robert Lyle Fuller | Electrical control system |
| CN202713150U (en) * | 2012-07-11 | 2013-01-30 | 北京赛德高科铁道电气科技有限责任公司 | DC/DC chopper circuit for electric locomotive auxiliary converter cabinet |
| CN104836511A (en) * | 2015-02-17 | 2015-08-12 | 中国铁道科学研究院 | Traction inverter main circuit |
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