WO2016086461A1 - Chopper circuit - Google Patents

Chopper circuit Download PDF

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WO2016086461A1
WO2016086461A1 PCT/CN2014/094068 CN2014094068W WO2016086461A1 WO 2016086461 A1 WO2016086461 A1 WO 2016086461A1 CN 2014094068 W CN2014094068 W CN 2014094068W WO 2016086461 A1 WO2016086461 A1 WO 2016086461A1
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chopper circuit
circuit
vdc
current
link
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PCT/CN2014/094068
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French (fr)
Chinese (zh)
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高永军
张桂成
管俊青
朱剑波
沈晟
伍益民
刘荣
张瑞峰
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永济新时速电机电器有限责任公司
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Publication of WO2016086461A1 publication Critical patent/WO2016086461A1/en

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    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

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  • the invention relates to the field of electric vehicle traction technology, in particular to a chopper circuit for a traction converter.
  • Traction converters are an important part of high-speed EMUs.
  • the traction converter is generally composed of a four-quadrant rectifier and a three-phase inverter.
  • the intermediate DC loop is an important loop connecting the four-quadrant rectifier and the three-phase inverter.
  • the stability of the intermediate DC link bus voltage is stable to the entire traction converter system. All have a very important role.
  • the invention provides a chopper circuit for solving the problem of the voltage fluctuation of the traction converter bus bar in the prior art.
  • the chopper circuit provided by the present invention includes:
  • the current input end of the first chopper circuit (1) is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the first chopper circuit (1) is electrically connected to the negative end of the VDC of the intermediate DC link;
  • the current input end of the second chopper circuit (2) is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the second chopper circuit (2) is electrically connected to the negative end of the VDC of the intermediate DC link;
  • the first chopper circuit (1) and/or the second chopper circuit (2) are used to turn on when the bus voltage of the intermediate DC link exceeds a preset value, and consume a part of the bus voltage to reduce the bus voltage to a prescribed value. .
  • the first chopper circuit (1) comprises:
  • the C pole of the IGBT device S17 is connected to the VDC positive terminal of the intermediate DC link, and the E pole of the IGBT device S17 is respectively connected to one end of the current sensor TA1 and the cathode of the diode D1, and the current sensor TA1
  • the other end is connected to one end of the resistor R2; the other end of the resistor R2 and the anode of the diode D1 are connected to the VDC negative terminal of the intermediate DC link.
  • the G pole of the IGBT device S17 is connected to the IGBT drive.
  • the second chopper circuit (2) comprises:
  • the C pole of the IGBT device S18 is connected to the VDC positive terminal of the intermediate DC link, and the E pole of the IGBT device S18 is respectively connected to one end of the current sensor TA2 and the cathode of the diode D2, and the current sensor TA2
  • the other end is connected to one end of the resistor R3; the other end of the resistor R3 and the anode of the diode D2 are connected to the VDC negative terminal of the intermediate DC link.
  • the G pole of the IGBT device S18 is connected to the IGBT drive.
  • the intermediate DC loop (5) is connected in series with a supporting capacitor (10).
  • a chopper circuit comprising: a first chopper circuit (1) and a second chopper circuit (2); a current input terminal of the first chopper circuit (1) and the intermediate DC link
  • the positive terminal of the VDC is electrically connected, the current output end of the first chopper circuit (1) is electrically connected to the negative end of the VDC of the intermediate DC circuit; the current input end of the second chopper circuit (2) and the intermediate DC link
  • the positive terminal of the VDC is electrically connected, and the current output end of the second chopper circuit (2) is electrically connected to the negative end of the VDC of the intermediate DC circuit; the first chopper circuit (1) and/or the second chopper circuit (2)
  • the bus voltage of the intermediate DC link exceeds a preset value, it is turned on, and a part of the bus voltage is consumed to reduce the bus voltage to a predetermined value, thereby improving the stability of the traction converter.
  • FIG. 1 is a schematic structural diagram of an embodiment of a chopper circuit provided by the present invention.
  • FIG. 2 is a circuit schematic diagram of a first chopper circuit in a chopper circuit provided by the present invention
  • FIG. 3 is a circuit schematic diagram of a second chopper circuit in a chopper circuit provided by the present invention.
  • FIG. 1 is a schematic structural diagram of an embodiment of a chopper circuit provided by the present invention. As shown in FIG. 1, the method includes:
  • the current input end of the first chopper circuit 1 is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the first chopper circuit 1 is electrically connected to the negative end of the VDC of the intermediate DC link;
  • the current input end of the second chopper circuit 2 is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the second chopper circuit 2 is electrically connected to the negative end of the VDC of the intermediate DC link;
  • the first chopper circuit 1 and/or the second chopper circuit 2 are used to turn on when the bus voltage of the intermediate DC link exceeds a preset value, and consume a part of the bus voltage to reduce the bus voltage to a prescribed value.
  • the intermediate DC loop is a part of the circuit of the traction converter
  • the traction converter comprises: a first input voltage current buffer circuit, a second input voltage current buffer circuit, a first four-quadrant rectifier, a second four-quadrant rectifier, and a middle a DC link, a first three-phase inverter, and a second three-phase inverter;
  • the first input voltage current buffer circuit is electrically connected to the first four-quadrant rectifier
  • the intermediate DC loop is electrically connected to the first four-quadrant rectifier
  • the second input voltage current buffer circuit is electrically connected to the second four-quadrant rectifier
  • the intermediate DC loop is electrically connected to the second Four quadrant rectifier.
  • connection relationship between the chopper circuit and each part of the traction converter is: the first chopper circuit is electrically connected to the intermediate DC circuit and the first three-phase inverter respectively; the second chopper circuit is respectively respectively The intermediate DC circuit and the second three-phase inverter are electrically connected.
  • the input voltage current buffer circuit and the input voltage current buffer circuit can ensure that the current rate of change is not excessive when the traction converter is initially powered up, thereby reducing the damage of the main circuit device of the traction converter by the initial power-on. .
  • the first four-quadrant rectifier and the second four-quadrant rectifier are output in parallel, and the output voltage is the intermediate DC link bus voltage.
  • FIG. 2 is a schematic circuit diagram of a first chopper circuit in the chopper circuit provided by the present invention.
  • the first chopper circuit 1 includes:
  • the C pole of the IGBT device S17 is connected to the VDC positive terminal of the intermediate DC circuit, and the E pole of the IGBT device S17 is respectively connected to one end of the current sensor TA1 and the cathode of the diode D1, and the other end of the current sensor TA1
  • One end of the resistor R2 is connected; the other end of the resistor R2 and the anode of the diode D1 are connected to the VDC negative terminal of the intermediate DC link.
  • the G electrode of the IGBT device S17 is connected to the IGBT drive.
  • the current sensor TA1 is used for real-time monitoring of the instantaneous value and the effective value of the chopper circuit current, and protects the IGBT and the resistance of the first chopper circuit 1.
  • the first chopper circuit 1 is connected to the positive and negative terminals of the intermediate DC link, and is turned on under the condition that the bus voltage exceeds a predetermined value, so that the resistance on the chopper circuit consumes a part of the energy of the bus voltage, thereby lowering the bus voltage to a prescribed value.
  • FIG. 3 is a circuit schematic diagram of a second chopper circuit in the chopper circuit provided by the present invention.
  • the second chopper circuit 2 includes:
  • the C pole of the IGBT device S18 is connected to the VDC positive terminal of the intermediate DC link, and the E pole of the IGBT device S18 is respectively connected to one end of the current sensor TA2 and the cathode of the diode D2, and the other end of the current sensor TA2
  • One end of the resistor R3 is connected; the other end of the resistor R3 and the anode of the diode D2 are connected to the VDC negative terminal of the intermediate DC link.
  • the G pole of the IGBT device S18 is connected to the IGBT drive.
  • the current sensor TA2 is used for real-time monitoring of the instantaneous value and the effective value of the chopper circuit current, and protects the IGBT and the resistance of the second chopper circuit 2.
  • the second chopper circuit 2 is connected to the positive and negative terminals of the intermediate DC link, and is turned on under the condition that the bus voltage exceeds a predetermined value, so that the resistance on the chopper circuit consumes a part of the energy of the bus voltage, thereby lowering the bus voltage to a prescribed value.
  • the first chopper circuit 1 and the second chopper circuit 2 alternately operate to stabilize the intermediate DC link voltage, reduce the impact of the bus voltage fluctuation on the electrical components of the intermediate DC circuit, and improve the reliability of the traction system.
  • a chopper circuit comprising: a first chopper circuit (1) and a second chopper circuit (2); a current input terminal of the first chopper circuit (1) and the intermediate DC
  • the positive end of the VDC of the loop is electrically connected, the current output end of the first chopper circuit (1) is electrically connected to the negative end of the VDC of the intermediate DC link; the current input end of the second chopper circuit (2) and the intermediate DC
  • the positive terminal of the VDC of the loop is electrically connected, and the current output end of the second chopper circuit (2) is electrically connected to the negative end of the VDC of the intermediate DC loop;
  • the first chopper circuit (1) and/or the second chopper circuit ( 2) It is used to turn on when the bus voltage of the intermediate DC link exceeds a preset value, and consume a part of the bus voltage to reduce the bus voltage to a predetermined value, thereby improving the stability of the traction converter.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

A chopper circuit comprises a first chopper circuit (1) and a second chopper circuit (2). A current input terminal of the first chopper circuit (1) is electrically connected to a VDC positive terminal of an intermediate direct-current circuit, and a current output terminal of the first chopper circuit (1) is electrically connected to a VDC negative terminal of the intermediate direct-current circuit. A current input terminal of the second chopper circuit (2) is electrically connected to the VDC positive terminal of the intermediate direct-current circuit, and a current output terminal of the second chopper circuit (2) is electrically connected to the VDC negative terminal of the intermediate direct-current circuit. The first chopper circuit (1) and/or the second chopper circuit (2) is used for being turned on when the bus voltage of the intermediate direct-current circuit exceeds a preset value to consume part of the bus voltage so as to decrease the bus voltage to a specified value. In this way, stability of a traction converter is improved, and further stability of a traction system is improved.

Description

一种斩波电路Chopper circuit 技术领域Technical field
本发明涉及动车组牵引技术领域，尤其涉及牵引变流器的一种斩波电路。The invention relates to the field of electric vehicle traction technology, in particular to a chopper circuit for a traction converter.
背景技术Background technique
牵引变流器是高速动车组的重要组成部分。牵引变流器一般由四象限整流器和三相逆变器组成，中间直流回路是连接四象限整流器和三相逆变器的重要回路，中间直流回路母线电压的稳定对于整个牵引变流系统的稳定都有十分重要的作用。Traction converters are an important part of high-speed EMUs. The traction converter is generally composed of a four-quadrant rectifier and a three-phase inverter. The intermediate DC loop is an important loop connecting the four-quadrant rectifier and the three-phase inverter. The stability of the intermediate DC link bus voltage is stable to the entire traction converter system. All have a very important role.
现有技术中，由于网压波动、动车组制动以及加减载等过程，导致中间直流回路母线电压发生波动，导致整个牵引变流器的稳定性较差。In the prior art, due to the network voltage fluctuation, the EMU braking, and the load shedding and the like, the intermediate DC link bus voltage fluctuates, resulting in poor stability of the entire traction converter.
发明内容Summary of the invention
本发明提供一种斩波电路，用于解决现有技术中牵引变流器母线电压波动的问题。The invention provides a chopper circuit for solving the problem of the voltage fluctuation of the traction converter bus bar in the prior art.
本发明提供的斩波电路包括：The chopper circuit provided by the present invention includes:
第一斩波电路(1)和第二斩波电路(2)；a first chopper circuit (1) and a second chopper circuit (2);
第一斩波电路(1)的电流输入端与所述中间直流回路的VDC正端电连接，第一斩波电路(1)的电流输出端与所述中间直流回路的VDC负端电连接；The current input end of the first chopper circuit (1) is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the first chopper circuit (1) is electrically connected to the negative end of the VDC of the intermediate DC link;
第二斩波电路(2)的电流输入端与所述中间直流回路的VDC正端电连接，第二斩波电路(2)的电流输出端与所述中间直流回路的VDC负端电连接；The current input end of the second chopper circuit (2) is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the second chopper circuit (2) is electrically connected to the negative end of the VDC of the intermediate DC link;
第一斩波电路(1)和/或第二斩波电路(2)用于在所述中间直流回路的母线电压超过预设值时开通，消耗一部分母线电压，以将母线电压降低到规定值。The first chopper circuit (1) and/or the second chopper circuit (2) are used to turn on when the bus voltage of the intermediate DC link exceeds a preset value, and consume a part of the bus voltage to reduce the bus voltage to a prescribed value. .
进一步地，第一斩波电路(1)包括： Further, the first chopper circuit (1) comprises:
绝缘栅双极型晶体管IGBT器件S17、电流传感器TA1、电阻R2和二极管D1；Insulated gate bipolar transistor IGBT device S17, current sensor TA1, resistor R2 and diode D1;
所述IGBT器件S17的C极连接所述中间直流回路的VDC正端，所述IGBT器件S17的E极分别连接所述电流传感器TA1的一端和所述二极管D1的阴极，所述电流传感器TA1的另一端连接所述电阻R2的一端；所述电阻R2的另一端和所述二极管D1的阳极连接所述中间直流回路的VDC负端。The C pole of the IGBT device S17 is connected to the VDC positive terminal of the intermediate DC link, and the E pole of the IGBT device S17 is respectively connected to one end of the current sensor TA1 and the cathode of the diode D1, and the current sensor TA1 The other end is connected to one end of the resistor R2; the other end of the resistor R2 and the anode of the diode D1 are connected to the VDC negative terminal of the intermediate DC link.
进一步地，所述IGBT器件S17的G极连接IGBT驱动。Further, the G pole of the IGBT device S17 is connected to the IGBT drive.
进一步地，第二斩波电路(2)包括：Further, the second chopper circuit (2) comprises:
绝缘栅双极型晶体管IGBT器件S18、电流传感器TA2、电阻R3和二极管D2；Insulated gate bipolar transistor IGBT device S18, current sensor TA2, resistor R3 and diode D2;
所述IGBT器件S18的C极连接所述中间直流回路的VDC正端，所述IGBT器件S18的E极分别连接所述电流传感器TA2的一端和所述二极管D2的阴极，所述电流传感器TA2的另一端连接所述电阻R3的一端；所述电阻R3的另一端和所述二极管D2的阳极连接所述中间直流回路的VDC负端。The C pole of the IGBT device S18 is connected to the VDC positive terminal of the intermediate DC link, and the E pole of the IGBT device S18 is respectively connected to one end of the current sensor TA2 and the cathode of the diode D2, and the current sensor TA2 The other end is connected to one end of the resistor R3; the other end of the resistor R3 and the anode of the diode D2 are connected to the VDC negative terminal of the intermediate DC link.
进一步地，所述IGBT器件S18的G极连接IGBT驱动。Further, the G pole of the IGBT device S18 is connected to the IGBT drive.
基于第一个方面，在第一个方面的第五种实施方式中，中间直流回路(5)上串接有支撑电容(10)。Based on the first aspect, in a fifth embodiment of the first aspect, the intermediate DC loop (5) is connected in series with a supporting capacitor (10).
本发明中，提供一种斩波电路，包括：第一斩波电路(1)和第二斩波电路(2)；第一斩波电路(1)的电流输入端与所述中间直流回路的VDC正端电连接，第一斩波电路(1)的电流输出端与所述中间直流回路的VDC负端电连接；第二斩波电路(2)的电流输入端与所述中间直流回路的VDC正端电连接，第二斩波电路(2)的电流输出端与所述中间直流回路的VDC负端电连接；第一斩波电路(1)和/或第二斩波电路(2)用于在所述中间直流回路的母线电压超过预设值时开通，消耗一部分母线电压，以将母线电压降低到规定值，从而提高牵引变流器的稳定性。In the present invention, there is provided a chopper circuit comprising: a first chopper circuit (1) and a second chopper circuit (2); a current input terminal of the first chopper circuit (1) and the intermediate DC link The positive terminal of the VDC is electrically connected, the current output end of the first chopper circuit (1) is electrically connected to the negative end of the VDC of the intermediate DC circuit; the current input end of the second chopper circuit (2) and the intermediate DC link The positive terminal of the VDC is electrically connected, and the current output end of the second chopper circuit (2) is electrically connected to the negative end of the VDC of the intermediate DC circuit; the first chopper circuit (1) and/or the second chopper circuit (2) When the bus voltage of the intermediate DC link exceeds a preset value, it is turned on, and a part of the bus voltage is consumed to reduce the bus voltage to a predetermined value, thereby improving the stability of the traction converter.
附图说明DRAWINGS
图1为本发明提供的斩波电路实施例的结构示意图； 1 is a schematic structural diagram of an embodiment of a chopper circuit provided by the present invention;
图2为本发明提供的斩波电路中第一斩波电路的电路原理图；2 is a circuit schematic diagram of a first chopper circuit in a chopper circuit provided by the present invention;
图3为本发明提供的斩波电路中第二斩波电路的电路原理图。3 is a circuit schematic diagram of a second chopper circuit in a chopper circuit provided by the present invention.
具体实施方式detailed description
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
图1为本发明提供的斩波电路实施例的结构示意图，如图1所示，包括：FIG. 1 is a schematic structural diagram of an embodiment of a chopper circuit provided by the present invention. As shown in FIG. 1, the method includes:
第一斩波电路1和第二斩波电路2；First chopper circuit 1 and second chopper circuit 2;
第一斩波电路1的电流输入端与所述中间直流回路的VDC正端电连接，第一斩波电路1的电流输出端与所述中间直流回路的VDC负端电连接；The current input end of the first chopper circuit 1 is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the first chopper circuit 1 is electrically connected to the negative end of the VDC of the intermediate DC link;
第二斩波电路2的电流输入端与所述中间直流回路的VDC正端电连接，第二斩波电路2的电流输出端与所述中间直流回路的VDC负端电连接；The current input end of the second chopper circuit 2 is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the second chopper circuit 2 is electrically connected to the negative end of the VDC of the intermediate DC link;
第一斩波电路1和/或第二斩波电路2用于在所述中间直流回路的母线电压超过预设值时开通，消耗一部分母线电压，以将母线电压降低到规定值。The first chopper circuit 1 and/or the second chopper circuit 2 are used to turn on when the bus voltage of the intermediate DC link exceeds a preset value, and consume a part of the bus voltage to reduce the bus voltage to a prescribed value.
其中，中间直流回路为牵引变流器的部分电路，牵引变流器具体包括：第一输入电压电流缓冲电路、第二输入电压电流缓冲电路、第一四象限整流器、第二四象限整流器、中间直流回路、第一三相逆变器和第二三相逆变器；Wherein, the intermediate DC loop is a part of the circuit of the traction converter, and the traction converter comprises: a first input voltage current buffer circuit, a second input voltage current buffer circuit, a first four-quadrant rectifier, a second four-quadrant rectifier, and a middle a DC link, a first three-phase inverter, and a second three-phase inverter;
第一输入电压电流缓冲电路与第一四象限整流器电连接，中间直流回路电连接第一四象限整流器，第二输入电压电流缓冲电路与第二四象限整流器电连接，中间直流回路电连接第二四象限整流器。The first input voltage current buffer circuit is electrically connected to the first four-quadrant rectifier, the intermediate DC loop is electrically connected to the first four-quadrant rectifier, the second input voltage current buffer circuit is electrically connected to the second four-quadrant rectifier, and the intermediate DC loop is electrically connected to the second Four quadrant rectifier.
斩波电路与牵引变流器中各部分电路的连接关系是：第一斩波电路分别与中间直流回路和第一三相逆变器电连接；第二斩波电路分别与中 间直流回路和第二三相逆变器电连接。The connection relationship between the chopper circuit and each part of the traction converter is: the first chopper circuit is electrically connected to the intermediate DC circuit and the first three-phase inverter respectively; the second chopper circuit is respectively respectively The intermediate DC circuit and the second three-phase inverter are electrically connected.
其中，输入电压电流缓冲电路和输入电压电流缓冲电路可以保证在牵引变流器初始上电时，电流的变化率不至于过大，减小了初始上电对牵引变流器主电路器件的损坏。The input voltage current buffer circuit and the input voltage current buffer circuit can ensure that the current rate of change is not excessive when the traction converter is initially powered up, thereby reducing the damage of the main circuit device of the traction converter by the initial power-on. .
其中，第一四象限整流器和第二四象限整流器并联输出，输出的电压为中间直流回路母线电压。Wherein, the first four-quadrant rectifier and the second four-quadrant rectifier are output in parallel, and the output voltage is the intermediate DC link bus voltage.
进一步地，图2为本发明提供的斩波电路中第一斩波电路的电路原理图，如图2所示，第一斩波电路1包括：Further, FIG. 2 is a schematic circuit diagram of a first chopper circuit in the chopper circuit provided by the present invention. As shown in FIG. 2, the first chopper circuit 1 includes:
绝缘栅双极型晶体管IGBT器件S17、电流传感器TA1、电阻R2和二极管D1；Insulated gate bipolar transistor IGBT device S17, current sensor TA1, resistor R2 and diode D1;
所述IGBT器件S17的C极连接中间直流回路的VDC正端，所述IGBT器件S17的E极分别连接所述电流传感器TA1的一端和所述二极管D1的阴极，所述电流传感器TA1的另一端连接所述电阻R2的一端；所述电阻R2的另一端和所述二极管D1的阳极连接中间直流回路的VDC负端。The C pole of the IGBT device S17 is connected to the VDC positive terminal of the intermediate DC circuit, and the E pole of the IGBT device S17 is respectively connected to one end of the current sensor TA1 and the cathode of the diode D1, and the other end of the current sensor TA1 One end of the resistor R2 is connected; the other end of the resistor R2 and the anode of the diode D1 are connected to the VDC negative terminal of the intermediate DC link.
其中，所述IGBT器件S17的G极连接IGBT驱动。电流传感器TA1，用于实时监测斩波电路电流的瞬时值和有效值，对第一斩波电路1的IGBT和电阻起到保护作用。The G electrode of the IGBT device S17 is connected to the IGBT drive. The current sensor TA1 is used for real-time monitoring of the instantaneous value and the effective value of the chopper circuit current, and protects the IGBT and the resistance of the first chopper circuit 1.
第一斩波电路1连接在中间直流回路正负端，在母线电压超过规定值的工况下开通，使斩波电路上的电阻消耗一部分母线电压的能量，从而使母线电压降到规定值。The first chopper circuit 1 is connected to the positive and negative terminals of the intermediate DC link, and is turned on under the condition that the bus voltage exceeds a predetermined value, so that the resistance on the chopper circuit consumes a part of the energy of the bus voltage, thereby lowering the bus voltage to a prescribed value.
进一步地，图3为本发明提供的斩波电路中第二斩波电路的电路原理图，如图3所示，第二斩波电路2包括：Further, FIG. 3 is a circuit schematic diagram of a second chopper circuit in the chopper circuit provided by the present invention. As shown in FIG. 3, the second chopper circuit 2 includes:
绝缘栅双极型晶体管IGBT器件S18、电流传感器TA2、电阻R3和二极管D2；Insulated gate bipolar transistor IGBT device S18, current sensor TA2, resistor R3 and diode D2;
所述IGBT器件S18的C极连接中间直流回路的VDC正端，所述IGBT器件S18的E极分别连接所述电流传感器TA2的一端和所述二极管D2的阴极，所述电流传感器TA2的另一端连接所述电阻R3的一端；所述电阻R3的另一端和所述二极管D2的阳极连接中间直流回路的VDC负端。 The C pole of the IGBT device S18 is connected to the VDC positive terminal of the intermediate DC link, and the E pole of the IGBT device S18 is respectively connected to one end of the current sensor TA2 and the cathode of the diode D2, and the other end of the current sensor TA2 One end of the resistor R3 is connected; the other end of the resistor R3 and the anode of the diode D2 are connected to the VDC negative terminal of the intermediate DC link.
其中，所述IGBT器件S18的G极连接IGBT驱动。电流传感器TA2，用于实时监测斩波电路电流的瞬时值和有效值，对第二斩波电路2的IGBT和电阻起到保护作用。Wherein, the G pole of the IGBT device S18 is connected to the IGBT drive. The current sensor TA2 is used for real-time monitoring of the instantaneous value and the effective value of the chopper circuit current, and protects the IGBT and the resistance of the second chopper circuit 2.
第二斩波电路2连接在中间直流回路正负端，在母线电压超过规定值的工况下开通，使斩波电路上的电阻消耗一部分母线电压的能量，从而使母线电压降到规定值。The second chopper circuit 2 is connected to the positive and negative terminals of the intermediate DC link, and is turned on under the condition that the bus voltage exceeds a predetermined value, so that the resistance on the chopper circuit consumes a part of the energy of the bus voltage, thereby lowering the bus voltage to a prescribed value.
需要进行说明的是，当中间直流回路母线电压VDC超过规定值时，IGBTS17、S18开通，中间直流回路的能量通过电阻R2、R3进行泄放，待母线电压降到规定值后关断IGBTS17、S18。实际工作时第一斩波电路1、第二斩波电路2交替工作，稳定中间直流回路电压，减小母线电压波动对中间直流回路电气部件的冲击，提高牵引系统的可靠性。It should be noted that when the intermediate DC link bus voltage VDC exceeds the specified value, IGBTS17 and S18 are turned on, and the energy of the intermediate DC circuit is discharged through the resistors R2 and R3, and the IGBTS17 and S18 are turned off after the bus voltage drops to a predetermined value. . In actual operation, the first chopper circuit 1 and the second chopper circuit 2 alternately operate to stabilize the intermediate DC link voltage, reduce the impact of the bus voltage fluctuation on the electrical components of the intermediate DC circuit, and improve the reliability of the traction system.
本实施例中，通过提供一种斩波电路，包括：第一斩波电路(1)和第二斩波电路(2)；第一斩波电路(1)的电流输入端与所述中间直流回路的VDC正端电连接，第一斩波电路(1)的电流输出端与所述中间直流回路的VDC负端电连接；第二斩波电路(2)的电流输入端与所述中间直流回路的VDC正端电连接，第二斩波电路(2)的电流输出端与所述中间直流回路的VDC负端电连接；第一斩波电路(1)和/或第二斩波电路(2)用于在所述中间直流回路的母线电压超过预设值时开通，消耗一部分母线电压，以将母线电压降低到规定值，从而提高牵引变流器的稳定性。In this embodiment, by providing a chopper circuit, comprising: a first chopper circuit (1) and a second chopper circuit (2); a current input terminal of the first chopper circuit (1) and the intermediate DC The positive end of the VDC of the loop is electrically connected, the current output end of the first chopper circuit (1) is electrically connected to the negative end of the VDC of the intermediate DC link; the current input end of the second chopper circuit (2) and the intermediate DC The positive terminal of the VDC of the loop is electrically connected, and the current output end of the second chopper circuit (2) is electrically connected to the negative end of the VDC of the intermediate DC loop; the first chopper circuit (1) and/or the second chopper circuit ( 2) It is used to turn on when the bus voltage of the intermediate DC link exceeds a preset value, and consume a part of the bus voltage to reduce the bus voltage to a predetermined value, thereby improving the stability of the traction converter.
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。 Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims (5)

  1. 一种斩波电路，其特征在于，包括：A chopper circuit, characterized in that it comprises:
    第一斩波电路(1)和第二斩波电路(2)；a first chopper circuit (1) and a second chopper circuit (2);
    第一斩波电路(1)的电流输入端与所述中间直流回路的VDC正端电连接，第一斩波电路(1)的电流输出端与所述中间直流回路的VDC负端电连接；The current input end of the first chopper circuit (1) is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the first chopper circuit (1) is electrically connected to the negative end of the VDC of the intermediate DC link;
    第二斩波电路(2)的电流输入端与所述中间直流回路的VDC正端电连接，第二斩波电路(2)的电流输出端与所述中间直流回路的VDC负端电连接；The current input end of the second chopper circuit (2) is electrically connected to the positive end of the VDC of the intermediate DC circuit, and the current output end of the second chopper circuit (2) is electrically connected to the negative end of the VDC of the intermediate DC link;
    第一斩波电路(1)和/或第二斩波电路(2)用于在所述中间直流回路的母线电压超过预设值时开通，消耗一部分母线电压，以将母线电压降低到规定值。The first chopper circuit (1) and/or the second chopper circuit (2) are used to turn on when the bus voltage of the intermediate DC link exceeds a preset value, and consume a part of the bus voltage to reduce the bus voltage to a prescribed value. .
  2. 根据权利要求1所述的斩波电路，其特征在于，第一斩波电路(1)包括：The chopper circuit of claim 1 wherein the first chopping circuit (1) comprises:
    绝缘栅双极型晶体管IGBT器件S17、电流传感器TA1、电阻R2和二极管D1；Insulated gate bipolar transistor IGBT device S17, current sensor TA1, resistor R2 and diode D1;
    所述IGBT器件S17的C极连接所述中间直流回路的VDC正端，所述IGBT器件S17的E极分别连接所述电流传感器TA1的一端和所述二极管D1的阴极，所述电流传感器TA1的另一端连接所述电阻R2的一端；所述电阻R2的另一端和所述二极管D1的阳极连接所述中间直流回路的VDC负端。The C pole of the IGBT device S17 is connected to the VDC positive terminal of the intermediate DC link, and the E pole of the IGBT device S17 is respectively connected to one end of the current sensor TA1 and the cathode of the diode D1, and the current sensor TA1 The other end is connected to one end of the resistor R2; the other end of the resistor R2 and the anode of the diode D1 are connected to the VDC negative terminal of the intermediate DC link.
  3. 根据权利要求2所述的斩波电路，其特征在于，所述IGBT器件S17的G极连接IGBT驱动。The chopper circuit according to claim 2, wherein the G-pole of the IGBT device S17 is connected to the IGBT drive.
  4. 根据权利要求1所述的斩波电路，其特征在于，第二斩波电路(2)包括：The chopper circuit of claim 1 wherein the second chopping circuit (2) comprises:
    绝缘栅双极型晶体管IGBT器件S18、电流传感器TA2、电阻R3和二极管D2；Insulated gate bipolar transistor IGBT device S18, current sensor TA2, resistor R3 and diode D2;
    所述IGBT器件S18的C极连接所述中间直流回路的VDC正端，所述IGBT器件S18的E极分别连接所述电流传感器TA2的一端和所述二极管D2的阴极，所述电流传感器TA2的另一端连接所述电阻R3的一端； 所述电阻R3的另一端和所述二极管D2的阳极连接所述中间直流回路的VDC负端。The C pole of the IGBT device S18 is connected to the VDC positive terminal of the intermediate DC link, and the E pole of the IGBT device S18 is respectively connected to one end of the current sensor TA2 and the cathode of the diode D2, and the current sensor TA2 The other end is connected to one end of the resistor R3; The other end of the resistor R3 and the anode of the diode D2 are connected to the VDC negative terminal of the intermediate DC link.
  5. 根据权利要求4所述的斩波电路，其特征在于，所述IGBT器件S18的G极连接IGBT驱动。 The chopper circuit according to claim 4, wherein the G-pole of the IGBT device S18 is connected to the IGBT drive.
PCT/CN2014/094068 2014-12-02 2014-12-17 Chopper circuit WO2016086461A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111106619A (en) * 2018-10-26 2020-05-05 特变电工智能电气有限责任公司 Energy comprehensive utilization system and method applied to subway system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111464032A (en) * 2020-05-25 2020-07-28 台达电子企业管理（上海）有限公司 Chopper circuit and control method thereof
CN116014726B (en) * 2023-01-13 2024-07-26 华能(广东)能源开发有限公司 Energy consumption device, flexible direct-current power transmission system and wind power generation system
CN116014788A (en) * 2023-01-13 2023-04-25 中国华能集团清洁能源技术研究院有限公司 Diode-based energy consumption device, flexible direct-current power transmission system and wind power generation system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2788446Y (en) * 2005-03-18 2006-06-14 大连新大路电气传动技术有限责任公司 Alternative and direct vehicle dragging convertor
CN101431289A (en) * 2008-12-06 2009-05-13 永济新时速电机电器有限责任公司 Traction auxiliary power supply integrated deflector
US20120073467A1 (en) * 2010-08-16 2012-03-29 Alstom Transport Sa Diesel-Electric Locomotive

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201466984U (en) * 2009-08-23 2010-05-12 山西科达自控工程技术有限公司 Primary fan special-purpose rapid packing high voltage transducer for mine
CN101635519A (en) * 2009-08-23 2010-01-27 山西科达自控工程技术有限公司 Power unit with brake function for unit cascaded high-voltage frequency converter
CN201639546U (en) * 2009-12-29 2010-11-17 北京动力京工科技有限公司 Alternating-current motor energy saving device
CN102882440B (en) * 2012-10-27 2016-03-02 株洲时代装备技术有限责任公司 A kind of high-power braking energy consumer and control method thereof
CN103227477A (en) * 2013-03-27 2013-07-31 许继集团有限公司 High voltage ride through control method for double-fed wind generator
CN203301388U (en) * 2013-06-09 2013-11-20 中国能建集团装备有限公司北京技术中心 High-frequency and high-voltage power supply device for electrostatic precipitator
CN103481787B (en) * 2013-06-24 2015-12-23 长春轨道客车股份有限公司 The motor train unit traction system of contact system, power bag and closed-center system hybrid power supply

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2788446Y (en) * 2005-03-18 2006-06-14 大连新大路电气传动技术有限责任公司 Alternative and direct vehicle dragging convertor
CN101431289A (en) * 2008-12-06 2009-05-13 永济新时速电机电器有限责任公司 Traction auxiliary power supply integrated deflector
US20120073467A1 (en) * 2010-08-16 2012-03-29 Alstom Transport Sa Diesel-Electric Locomotive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111106619A (en) * 2018-10-26 2020-05-05 特变电工智能电气有限责任公司 Energy comprehensive utilization system and method applied to subway system

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