WO2017080000A1 - Locomotive traction system - Google Patents

Locomotive traction system Download PDF

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Publication number
WO2017080000A1
WO2017080000A1 PCT/CN2015/095611 CN2015095611W WO2017080000A1 WO 2017080000 A1 WO2017080000 A1 WO 2017080000A1 CN 2015095611 W CN2015095611 W CN 2015095611W WO 2017080000 A1 WO2017080000 A1 WO 2017080000A1
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WO
WIPO (PCT)
Prior art keywords
module
auxiliary
conversion module
locomotive
auxiliary converter
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PCT/CN2015/095611
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French (fr)
Chinese (zh)
Inventor
王晓鹏
吴重熙
赵立超
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中车大连电力牵引研发中心有限公司
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Publication of WO2017080000A1 publication Critical patent/WO2017080000A1/en

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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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/13—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines using AC generators and AC motors
    • 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
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the invention relates to the field of locomotives, and in particular to a locomotive traction system.
  • the diesel locomotive uses the internal combustion engine as the motive force to drive the locomotive moving wheel to rotate on the track through the transmission device.
  • the electric drive mode of diesel locomotives can be mainly divided into three types: DC electric drive system, AC-DC electric drive system and AC-DC-AC electric drive system.
  • DC electric drive system AC-DC electric drive system
  • AC-DC-AC electric drive system AC-DC-AC electric drive system
  • AC-DC power transmission locomotives and AC-DC-AC power transmission locomotives AC transmission locomotives
  • FIG. 1 is a schematic diagram of a conventional AC-DC power transmission system.
  • the diesel engine 101 drives the three-phase AC synchronous main generator 201 to generate three-phase AC power, and then outputs a DC power to the DC traction motor 401 through the rectifier module 301 to drive Locomotive movement.
  • 2 is a schematic diagram of a conventional AC-DC-AC power transmission system.
  • the diesel engine 102 drives the three-phase AC synchronous main generator 202 to rotate, generates three-phase AC power and inputs it to the rectifier module 302, and rectifies into DC power and DC power.
  • the inverter 502 is further inverted into an AC power having a variable voltage frequency, and is output to the three-phase AC traction motor 402 to drive the locomotive to move.
  • 3 is a schematic structural view of a traction system of a conventional electric drive diesel locomotive. As shown in FIG. 3, the traction system of the existing electric drive diesel locomotive includes a main drive system and an auxiliary drive system. The output of the diesel engine 103 is connected to the synchronous main generator 203 and the auxiliary generator 503, respectively, and the synchronous main generator 203 and The auxiliary generator 503 serves as a source of electrical energy for the main drive system and the auxiliary drive system, respectively.
  • the synchronous main generator 203 of the main drive system outputs three-phase alternating current to the traction converter 303, thereby driving the traction motor 403 to drive and control the locomotive operation; the output terminals of the auxiliary generator 503 of the auxiliary transmission system are respectively charged and charged.
  • the machine 603 is coupled to the auxiliary load 703 for generating auxiliary system power, providing power to the auxiliary load 703, and providing DC control power to the locomotive control device.
  • the invention provides a locomotive traction system, which overcomes the problem that the existing locomotive has two generators, the locomotive circuit is complicated, and the locomotive space is occupied.
  • the invention provides a locomotive traction system, comprising: an internal combustion engine, a synchronous main generator, an AC/DC conversion module, a traction motor and an auxiliary load;
  • the input end of the synchronous main generator is connected with the internal combustion engine, and the synchronous main generator is used to generate current when the internal combustion engine is working; the input end of the AC/DC conversion module is electrically connected with the output end of the generator, and the first output end of the AC/DC conversion module and the traction
  • the electric motor is electrically connected, the second output end of the AC/DC conversion module is electrically connected to the auxiliary load, and the traction motor is used for pulling the locomotive movement.
  • the locomotive traction system of the invention comprises: an internal combustion engine, a synchronous main generator, an AC/DC conversion module, a traction motor and an auxiliary load; the input end of the synchronous main generator is connected with the internal combustion engine, and the synchronous main generator is used for generating current when the internal combustion engine is working.
  • the input end of the AC/DC conversion module is electrically connected to the output end of the generator, the first output end of the AC/DC conversion module is electrically connected to the traction motor, and the second output end of the AC/DC conversion module is electrically connected with the auxiliary load, and the traction motor is used for Traction locomotive movement.
  • FIG. 1 is a schematic view of a conventional AC-DC power transmission system
  • FIG. 2 is a schematic view of a conventional AC-DC-AC power transmission system
  • FIG. 3 is a schematic structural view of a traction system of a conventional electric drive diesel locomotive
  • FIG. 4 is a schematic view of a traction system of a locomotive according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of a traction system of a locomotive according to a second embodiment of the present invention.
  • the locomotive traction system provided in this embodiment includes:
  • the input end of the synchronous main generator 2 is connected to the internal combustion engine 1, and the synchronous main generator 2 is used to generate current when the internal combustion engine 1 is working; the input end of the AC/DC conversion module 3 is electrically connected to the output end of the generator 2, and the AC/DC conversion module 3
  • the first output is electrically connected to the traction motor 4, the second output of the AC/DC conversion module 3 is electrically connected to the auxiliary load 5, and the traction motor 4 is used to pull the locomotive to move.
  • the synchronous main generator 2 can adopt a low (medium) speed synchronous generator, and the internal combustion engine 1 can be a diesel engine or a gasoline engine. As long as it is a heat engine capable of converting internal energy into power, the present invention does not specifically describe the type of the internal combustion engine.
  • the diesel generator can be used to drive the synchronous main generator 2 to generate three-phase alternating current.
  • the AC/DC conversion module 3 is configured to perform AC-DC or AC-DC-AC conversion on the three-phase AC input from the synchronous main generator 2, and then output to the traction motor 4 and the auxiliary load 5.
  • the auxiliary load 5 of the locomotive supplies power to the auxiliary equipment and is the locomotive control equipment.
  • the DC control power supply is provided, and the locomotive auxiliary load 5 mainly includes: a cooling fan that cools the internal combustion engine, a fan that supplies a wind source to the traction motor, an air compressor for the locomotive brake, an air conditioning unit, and a vehicle body ventilator.
  • the generated alternating current is output to the AC/DC conversion module 3 only by a synchronous main generator 2, wherein the first output end and the second output end of the AC/DC conversion module 3 are respectively coupled to the traction motor 4 and the auxiliary Load 5 electrical connection to achieve locomotive traction.
  • the auxiliary load in the existing auxiliary drive system is directly connected to the main drive system due to the elimination of the auxiliary generator, which greatly simplifies the circuit of the traction system of the locomotive and improves the maintenance efficiency of the locomotive circuit. .
  • three-phase alternating current is generated by the synchronous driving of the main generator by the internal combustion engine, and is input to the AC/DC conversion module for conversion, and then the two outputs of the AC/DC conversion module respectively output current to the traction motor and the auxiliary load, wherein the traction is performed.
  • the electric motor is used to drive the locomotive movement
  • the auxiliary load provides power for the auxiliary equipment and provides the DC control power for the locomotive control equipment.
  • the synchronous main generator and the auxiliary generator need to be simultaneously set in the locomotive to be the main transmission system respectively.
  • the auxiliary transmission system provides power, which causes the complicated internal circuit of the locomotive, realizes the purpose of separately supplying power to the traction motor and the auxiliary load of the locomotive only by synchronizing the main generator, so that it is not necessary to set an auxiliary generator and reduce the cost of the locomotive.
  • the internal space simplifies the circuit of the locomotive traction system, improves the maintenance and maintenance efficiency of the locomotive circuit, and reduces the failure rate of the circuit.
  • the AC/DC conversion module includes a rectifier module 31, and the input end of the rectifier module 31 is electrically connected to the synchronous main generator 2.
  • the first output end of the rectifier module 31 is a first output end of the AC/DC conversion module
  • the second output end of the rectifier module 31 is a second output end of the AC/DC conversion module.
  • the rectifier module 31 is a three-phase bridge type uncontrollable rectification, and can rectify the three-phase alternating current output from the synchronous main generator 2 into a direct current.
  • the AC/DC conversion module may further include: a rectifier module 31, a traction converter module 32, and an auxiliary converter module 33.
  • the input end of the rectifier module 31 is electrically connected to the synchronous main generator 2, and the output ends of the rectifier module 31 are respectively pulled.
  • the input of the converter module 32 and the auxiliary converter module The input end of the traction converter module 32 is the first output end of the AC/DC conversion module, and the output end of the auxiliary current conversion module 33 is the second output end of the AC/DC conversion module.
  • the rectifier module 31 can output the output DC power to the traction converter module 32 and the auxiliary converter module 33.
  • Each rectifier module can connect three traction converter modules 32 and two auxiliary converter modules 33.
  • the traction converter module 32 can invert the DC power input by the rectifier module 31 into AC power, and output it as a corresponding variable frequency transformer power supply according to the requirements of the control command, and implement continuous control on the traction and braking of the locomotive.
  • the traction current can be controlled by an axis control method, and one traction motor 4 is controlled by one traction converter module 32.
  • the auxiliary converter module 33 can invert the DC power input by the rectifier module 31 into an alternating current, and is responsible for providing an inverter power supply to the auxiliary system.
  • the locomotive traction system further includes: a plurality of input contactors 6, each of the input contactors 6 corresponding to one AC/DC conversion module, and each input contactor 6 is used for disconnection An electrical connection between the AC/DC conversion module and the synchronous main generator 2 corresponding thereto.
  • the input contactor 6 detects that any one of the traction converter module 32 and the auxiliary converter module 33 corresponding to one bogie has a major fault such as overcurrent or short circuit, the bogie can be safely cut off to ensure that the fault does not expand.
  • the AC/DC conversion module further includes a first AC/DC conversion module and a second AC/DC conversion module, where the first AC/DC conversion module includes a first auxiliary current conversion module 331 and a second auxiliary current conversion module 332, and the second AC/DC conversion module
  • the conversion module includes a third auxiliary current conversion module 333 and a fourth auxiliary current conversion module 334.
  • the first auxiliary current conversion module 331 and the third auxiliary current conversion module 333 are mutually redundant backups, and the second auxiliary current conversion module 332 and the fourth.
  • the auxiliary converter modules 334 are mutually redundant backups, wherein the first auxiliary converter module 331 and the third auxiliary converter module 333 are variable voltage and variable frequency (VVVF) auxiliary converter modules, and the second auxiliary The converter module 332 and the fourth auxiliary converter module 334 are constant voltage and constant frequency (CVCF) auxiliary converter modules.
  • VVVF variable voltage and variable frequency
  • CVCF constant voltage and constant frequency
  • the two sets of VVVF auxiliary converter modules and the two sets of CVCF auxiliary converter modules are mutually redundant. When any one of them fails, another group of corresponding VVVFs or CVCFs provide for all auxiliary loads 5 Power supply, each set of auxiliary converter modules 33 is large enough The capacity to ensure the overload capacity of the auxiliary system solves the problem in the prior art.
  • the auxiliary converter module has only one set of VVVF and CVCF. When one of the VVVF or CVCF fails, only one of the remaining CVCF or VVVF can be used alone. Load power supply problem.
  • the output ends of the first auxiliary converter module 331 , the second auxiliary converter module 332 , the third auxiliary converter module 333 and the fourth auxiliary converter module 334 are all provided with a conversion contactor 10 when the conversion contactor 10 is When the corresponding auxiliary converter module 33 fails, the switching contactor 10 disconnects the connection between the failed auxiliary converter module 33 and the auxiliary load 5.
  • the conversion contactor 10 is configured to assist the auxiliary converter 33 to implement redundancy backup, which may be an air conversion contactor 10, and when any one of the VVVF or CVCF auxiliary failure module 33 fails, the corresponding The contactor is automatically disconnected, the redundant switching contactor is closed, and the working auxiliary auxiliary converter module 33 drives the VVVF or CVCF to supply power to all corresponding loads.
  • redundancy backup which may be an air conversion contactor 10
  • the locomotive traction system provided in this embodiment further includes: a filter 7, the input end of the filter 7 is connected to the second output end of the AC/DC conversion module, and the output end of the filter 7 is connected to the auxiliary load 5, and the filter 7 is used to filter the signal output by the AC/DC conversion module.
  • the filter 7 can filter the three-phase SVPWM wave output from the auxiliary converter module 33, and output a sine wave that meets the requirements to each auxiliary load 5.
  • a voltage-changing charging device 8 is further disposed between the second output end of the AC-DC conversion module and the auxiliary load 5, and the voltage-variable charging device 8 is configured to transform the voltage outputted by the second end of the AC-DC conversion module 3, And charge the battery on the locomotive.
  • the variable voltage charging device 8 adopts phase-controlled rectification control technology. When the locomotive is running, the variable voltage charging device 8 can also provide a stable 74 VDC power supply for the locomotive control circuit and the lighting circuit, and is also used for charging the locomotive battery.
  • the battery constant voltage current limiting charging optimizes the charging voltage according to the battery voltage and the peripheral temperature inside the battery box, and limits the charging current to prevent damage to the battery.
  • the LC filter 7 at the output minimizes the charging current ripple.
  • the charged battery can provide power for the locomotive control circuit, lighting circuit, and the like.
  • the locomotive traction system provided by the embodiment further includes: a cooling device 9 for cooling and cooling the locomotive traction system, and the cooling device 9 can be disposed in the same cabinet as the filter 7.
  • the locomotive traction system provided in the second embodiment provides a rectifier module, a traction converter module and an auxiliary converter module in the AC/DC conversion module, wherein the output ends of the rectifier modules are respectively It is electrically connected with the input end of the traction converter module and the input end of the auxiliary converter module, and the rectifier module rectifies the three-phase alternating current input by the main generator into direct current, and then inputs to the traction converter module and the auxiliary converter module respectively to perform the inverse After the change, the output is AC, and four sets of auxiliary converter modules are set in the AC-DC conversion module.
  • the two sets of outputs are variable frequency variable voltage (VVVF), and the other two outputs are fixed frequency constant voltage (CVCF), when in VVVF or CVCF.
  • the locomotive traction system provided by the embodiment provides power for the traction motor and the auxiliary load through a synchronous main generator, and the corresponding module is set in the AC/DC conversion module, which is applicable not only to the AC/DC power transmission locomotive, but also to the locomotive traction system. AC-straight-AC power transmission locomotive, good applicability.

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  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
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Abstract

A locomotive traction system, comprising: an internal combustion engine (1), a synchronous main generator (2), an alternating current-direct current conversion module (3), a traction motor (4), and an auxiliary load (5). The input end of the synchronous main generator (2) is connected with the internal combustion engine (1), and the synchronous main generator (2) is used for generating an electric current when the internal combustion engine (1) is acting; the input end of the alternating current-direct current conversion module (3) is electrically connected with the output end of the synchronous main generator (2), the first output end of the alternating current-direct current conversion module (3) is electrically connected with the traction motor (4), the second output end of the alternating current-direct current conversion module (3) is electrically connected with the auxiliary load (5), and the traction motor (4) is used for drawing a locomotive. By means of the locomotive traction system, power can be provided for the traction system and the auxiliary load (5) simultaneously by one synchronous main generator (2). The circuit of the locomotive traction system is simplified, and the interior space and maintenance costs of the locomotive are reduced.

Description

机车牵引***Locomotive traction system 技术领域Technical field
本发明涉及机车领域，尤其涉及一种机车牵引***。The invention relates to the field of locomotives, and in particular to a locomotive traction system.
背景技术Background technique
内燃机车以内燃机作为原动力，通过传动装置驱动机车动轮在轨道上转动。内燃机车的电力传动方式主要可分为三种：直流电力传动***、交—直流电力传动***和交—直—交流电力传动***。其中，交-直流电力传动机车和交—直—交流电力传动机车(交流传动机车)在国内外的应用十分普遍，发展迅速。The diesel locomotive uses the internal combustion engine as the motive force to drive the locomotive moving wheel to rotate on the track through the transmission device. The electric drive mode of diesel locomotives can be mainly divided into three types: DC electric drive system, AC-DC electric drive system and AC-DC-AC electric drive system. Among them, AC-DC power transmission locomotives and AC-DC-AC power transmission locomotives (AC transmission locomotives) are widely used at home and abroad and are developing rapidly.
图1为现有的交-直流电力传动***的示意图。如图1所示，交—直流电力传动***的主传动***中，由柴油机101带动三相交流同步主发电机201转动产生三相交流电，再通过整流模块301输出直流电至直流牵引电动机401，驱动机车运动。图2为现有的交-直-交流电力传动***的示意图。如图2所示，交—直—交流电动传动***的主传动***中，由柴油机102带动三相交流同步主发电机202转动，产生三相交流电并输入至整流模块302，整流为直流电，直流电再通过逆变器502逆变为电压频率可变的交流电，并输出至三相交流牵引电机402，驱动机车运动。图3为现有的电力传动内燃机车的牵引***的结构示意图。如图3所示，现有的电力传动内燃机车的牵引***包括主传动***和辅助传动***，柴油机103的输出端分别与同步主发电机203和辅助发电机503连接，同步主发电机203和辅助发电机503分别作为主传动***和辅助传动***的电能来源。其中，主传动***的同步主发电机203输出三相交流电至牵引变流器303，从而带动牵引电机403转动，以驱动和控制机车运行；辅助传动***的辅助发电机503的输出端分别与充电机603和辅助负载703连接，作用在于产生辅助***电能，为辅助负载703提供电能以及为机车控制设备提供直流控制电源。1 is a schematic diagram of a conventional AC-DC power transmission system. As shown in FIG. 1 , in the main drive system of the AC-DC power transmission system, the diesel engine 101 drives the three-phase AC synchronous main generator 201 to generate three-phase AC power, and then outputs a DC power to the DC traction motor 401 through the rectifier module 301 to drive Locomotive movement. 2 is a schematic diagram of a conventional AC-DC-AC power transmission system. As shown in FIG. 2, in the main transmission system of the AC-DC-AC electric drive system, the diesel engine 102 drives the three-phase AC synchronous main generator 202 to rotate, generates three-phase AC power and inputs it to the rectifier module 302, and rectifies into DC power and DC power. The inverter 502 is further inverted into an AC power having a variable voltage frequency, and is output to the three-phase AC traction motor 402 to drive the locomotive to move. 3 is a schematic structural view of a traction system of a conventional electric drive diesel locomotive. As shown in FIG. 3, the traction system of the existing electric drive diesel locomotive includes a main drive system and an auxiliary drive system. The output of the diesel engine 103 is connected to the synchronous main generator 203 and the auxiliary generator 503, respectively, and the synchronous main generator 203 and The auxiliary generator 503 serves as a source of electrical energy for the main drive system and the auxiliary drive system, respectively. The synchronous main generator 203 of the main drive system outputs three-phase alternating current to the traction converter 303, thereby driving the traction motor 403 to drive and control the locomotive operation; the output terminals of the auxiliary generator 503 of the auxiliary transmission system are respectively charged and charged. The machine 603 is coupled to the auxiliary load 703 for generating auxiliary system power, providing power to the auxiliary load 703, and providing DC control power to the locomotive control device.
但是，现有的交-直流电力传动机车和交-直-交流电力传动机车的牵 引***中，由于辅助发电机与同步主发电机都布置在机车内，不仅占用了车内较大空间，还使得机车牵引***的电路连接和布设变的复杂，不利于检修和维护。However, the existing AC-DC power transmission locomotives and AC-DC-AC power transmission locomotives In the lead-in system, since the auxiliary generator and the synchronous main generator are arranged in the locomotive, not only the large space inside the vehicle is occupied, but also the circuit connection and layout of the locomotive traction system are complicated, which is not conducive to maintenance and maintenance.
发明内容Summary of the invention
本发明提供一种机车牵引***，以克服现有机车内存在两个发电机，机车电路复杂，占用机车空间较大的问题。The invention provides a locomotive traction system, which overcomes the problem that the existing locomotive has two generators, the locomotive circuit is complicated, and the locomotive space is occupied.
本发明提供一种机车牵引***，包括：内燃机、同步主发电机、交直流转换模块、牵引电动机和辅助负载；The invention provides a locomotive traction system, comprising: an internal combustion engine, a synchronous main generator, an AC/DC conversion module, a traction motor and an auxiliary load;
同步主发电机的输入端与内燃机连接，同步主发电机用于在内燃机做功时产生电流；交直流转换模块的输入端与发电机输出端电连接，交直流转换模块的第一输出端与牵引电动机电连接，交直流转换模块的第二输出端与辅助负载电连接，牵引电动机用于牵引机车运动。The input end of the synchronous main generator is connected with the internal combustion engine, and the synchronous main generator is used to generate current when the internal combustion engine is working; the input end of the AC/DC conversion module is electrically connected with the output end of the generator, and the first output end of the AC/DC conversion module and the traction The electric motor is electrically connected, the second output end of the AC/DC conversion module is electrically connected to the auxiliary load, and the traction motor is used for pulling the locomotive movement.
本发明的机车牵引***，包括：内燃机、同步主发电机、交直流转换模块、牵引电动机和辅助负载；同步主发电机的输入端与内燃机连接，同步主发电机用于在内燃机做功时产生电流；交直流转换模块的输入端与发电机输出端电连接，交直流转换模块的第一输出端与牵引电动机电连接，交直流转换模块的第二输出端与辅助负载电连接，牵引电动机用于牵引机车运动。通过将同步主发电机的输出端与交直变换模块电连接，并使交直变换模块的输出端分别与牵引电动机和辅助负载连接，在机车牵引***内仅通过一个同步主发电机，就可同时为牵引电机和辅助负载提供电力，而不需要额外设置辅助发电机，简化了机车牵引***的电路，降低了机车成本和内部占用空间，还提高了对机车电路的检修和维护效率。The locomotive traction system of the invention comprises: an internal combustion engine, a synchronous main generator, an AC/DC conversion module, a traction motor and an auxiliary load; the input end of the synchronous main generator is connected with the internal combustion engine, and the synchronous main generator is used for generating current when the internal combustion engine is working. The input end of the AC/DC conversion module is electrically connected to the output end of the generator, the first output end of the AC/DC conversion module is electrically connected to the traction motor, and the second output end of the AC/DC conversion module is electrically connected with the auxiliary load, and the traction motor is used for Traction locomotive movement. By electrically connecting the output of the synchronous main generator to the AC/DC converter module and connecting the output of the AC/DC converter module to the traction motor and the auxiliary load respectively, only one synchronous main generator can be used in the locomotive traction system. The traction motor and the auxiliary load provide power without the need for additional auxiliary generators, simplifying the circuit of the locomotive traction system, reducing the cost of the locomotive and the internal space, and improving the efficiency of maintenance and maintenance of the locomotive circuit.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得 其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and can be obtained by those skilled in the art without any inventive labor. Other drawings.
图1为现有的交-直流电力传动***的示意图；1 is a schematic view of a conventional AC-DC power transmission system;
图2为现有的交-直-交流电力传动***的示意图；2 is a schematic view of a conventional AC-DC-AC power transmission system;
图3为现有的电力传动内燃机车的牵引***的结构示意图；3 is a schematic structural view of a traction system of a conventional electric drive diesel locomotive;
图4为本发明实施例一的机车牵引***示意图；4 is a schematic view of a traction system of a locomotive according to Embodiment 1 of the present invention;
图5为本发明实施例二的机车牵引***示意图。FIG. 5 is a schematic diagram of a traction system of a locomotive according to a second embodiment of 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作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.
实施例一 Embodiment 1
图4为本发明实施例一的机车牵引***示意图，如图4所示，本实施例提供的机车牵引***，包括：4 is a schematic diagram of a locomotive traction system according to Embodiment 1 of the present invention. As shown in FIG. 4, the locomotive traction system provided in this embodiment includes:
内燃机1、同步主发电机2、交直流转换模块3、牵引电动机4和辅助负载5； Internal combustion engine 1, synchronous main generator 2, AC/DC conversion module 3, traction motor 4 and auxiliary load 5;
同步主发电机2的输入端与内燃机1连接，同步主发电机2用于在内燃机1做功时产生电流；交直流转换模块3的输入端与发电机2输出端电连接，交直流转换模块3的第一输出端与牵引电动机4电连接，交直流转换模块3的第二输出端与辅助负载5电连接，牵引电动机4用于牵引机车运动。The input end of the synchronous main generator 2 is connected to the internal combustion engine 1, and the synchronous main generator 2 is used to generate current when the internal combustion engine 1 is working; the input end of the AC/DC conversion module 3 is electrically connected to the output end of the generator 2, and the AC/DC conversion module 3 The first output is electrically connected to the traction motor 4, the second output of the AC/DC conversion module 3 is electrically connected to the auxiliary load 5, and the traction motor 4 is used to pull the locomotive to move.
具体的，同步主发电机2可以采用低(中)速同步发电机，内燃机1可以为柴油机或汽油机，只要是能够将内能转化为动力的热力发动机即可，本发明不对内燃机的类型进行具体限定，例如可以为柴油机做功带动同步主发电机2转动产生三相交流电。Specifically, the synchronous main generator 2 can adopt a low (medium) speed synchronous generator, and the internal combustion engine 1 can be a diesel engine or a gasoline engine. As long as it is a heat engine capable of converting internal energy into power, the present invention does not specifically describe the type of the internal combustion engine. For example, the diesel generator can be used to drive the synchronous main generator 2 to generate three-phase alternating current.
具体的，交直流转换模块3用于将同步主发电机2输入的三相交流电进行交-直流或交-直-交流转换后，输出至牵引电动机4和辅助负载5。Specifically, the AC/DC conversion module 3 is configured to perform AC-DC or AC-DC-AC conversion on the three-phase AC input from the synchronous main generator 2, and then output to the traction motor 4 and the auxiliary load 5.
具体的，机车的辅助负载5为辅助设备提供电能以及为机车控制设备 提供直流控制电源，机车辅助负载5主要包括：对内燃机进行降温的冷却风扇、对牵引电动机提供风源的通风机、用于机车制动的空气压缩机、空调机组以及车体通风机等设备。Specifically, the auxiliary load 5 of the locomotive supplies power to the auxiliary equipment and is the locomotive control equipment. The DC control power supply is provided, and the locomotive auxiliary load 5 mainly includes: a cooling fan that cools the internal combustion engine, a fan that supplies a wind source to the traction motor, an air compressor for the locomotive brake, an air conditioning unit, and a vehicle body ventilator.
进一步地，本实施例只通过一台同步主发电机2将产生的交流电输出至交直流转换模块3，其中，交直流转换模块3的第一输出端和第二输出端分别与牵引电动机4和辅助负载5电连接，实现机车牵引。与现有技术相比，由于取消了辅助发电机，实现了将现有辅助传动***中的辅助负载直接与主传动***电连接，大大简化了机车牵引***的电路，提高了机车电路的检修效率。Further, in this embodiment, the generated alternating current is output to the AC/DC conversion module 3 only by a synchronous main generator 2, wherein the first output end and the second output end of the AC/DC conversion module 3 are respectively coupled to the traction motor 4 and the auxiliary Load 5 electrical connection to achieve locomotive traction. Compared with the prior art, the auxiliary load in the existing auxiliary drive system is directly connected to the main drive system due to the elimination of the auxiliary generator, which greatly simplifies the circuit of the traction system of the locomotive and improves the maintenance efficiency of the locomotive circuit. .
本实施例通过由内燃机做功带动同步主发电机产生三相交流电，并输入至交直流转换模块进行转换，再由交直流转换模块的两个输出端将电流分别输出至牵引电动机和辅助负载，其中牵引电动机用于驱动机车运动，辅助负载为辅助设备提供电能以及为机车控制设备提供直流控制电源，解决了现有技术中，机车内需要同时设置同步主发电机和辅助发电机以分别为主传动***和辅助传动***提供电力，造成机车内部电路复杂的问题，实现了只通过同步主发电机就可以分别为机车牵引电机和辅助负载提供电力的目的，因而不需要设置辅助发电机，降低了机车成本和内部占用空间，简化了机车牵引***的电路，提高了机车电路的检修和维护效率，减少了电路的故障率。In this embodiment, three-phase alternating current is generated by the synchronous driving of the main generator by the internal combustion engine, and is input to the AC/DC conversion module for conversion, and then the two outputs of the AC/DC conversion module respectively output current to the traction motor and the auxiliary load, wherein the traction is performed. The electric motor is used to drive the locomotive movement, the auxiliary load provides power for the auxiliary equipment and provides the DC control power for the locomotive control equipment. In the prior art, the synchronous main generator and the auxiliary generator need to be simultaneously set in the locomotive to be the main transmission system respectively. And the auxiliary transmission system provides power, which causes the complicated internal circuit of the locomotive, realizes the purpose of separately supplying power to the traction motor and the auxiliary load of the locomotive only by synchronizing the main generator, so that it is not necessary to set an auxiliary generator and reduce the cost of the locomotive. The internal space simplifies the circuit of the locomotive traction system, improves the maintenance and maintenance efficiency of the locomotive circuit, and reduces the failure rate of the circuit.
实施例二 Embodiment 2
图5为本发明实施例二的机车牵引***示意图，本实施例提供的机车牵引***，参见图5，交直流转换模块包括整流模块31，整流模块31的输入端与同步主发电机2电连接，整流模块31的第一输出端为交直流转换模块的第一输出端，整流模块31的第二输出端为交直流转换模块的第二输出端。5 is a schematic diagram of a traction system of a locomotive according to a second embodiment of the present invention. Referring to FIG. 5, the AC/DC conversion module includes a rectifier module 31, and the input end of the rectifier module 31 is electrically connected to the synchronous main generator 2. The first output end of the rectifier module 31 is a first output end of the AC/DC conversion module, and the second output end of the rectifier module 31 is a second output end of the AC/DC conversion module.
整流模块31为三相桥式不可控整流，可以将同步主发电机2输出的三相交流电整流为直流电。The rectifier module 31 is a three-phase bridge type uncontrollable rectification, and can rectify the three-phase alternating current output from the synchronous main generator 2 into a direct current.
进一步的，交直流转换模块还可以包括：整流模块31、牵引变流模块32和辅助变流模块33，整流模块31输入端与同步主发电机2电连接，整流模块31的输出端分别与牵引变流模块32的输入端以及辅助变流模块 33的输入端电连接，牵引变流模块32的输出端为交直流转换模块的第一输出端，辅助变流模块33的输出端为交直流转换模块的第二输出端。Further, the AC/DC conversion module may further include: a rectifier module 31, a traction converter module 32, and an auxiliary converter module 33. The input end of the rectifier module 31 is electrically connected to the synchronous main generator 2, and the output ends of the rectifier module 31 are respectively pulled. The input of the converter module 32 and the auxiliary converter module The input end of the traction converter module 32 is the first output end of the AC/DC conversion module, and the output end of the auxiliary current conversion module 33 is the second output end of the AC/DC conversion module.
整流模块31可将输出的直流电输出至牵引变流模块32和辅助变流模块33，每个整流模块可以连接3个牵引变流模块32及2个辅助变流模块33。The rectifier module 31 can output the output DC power to the traction converter module 32 and the auxiliary converter module 33. Each rectifier module can connect three traction converter modules 32 and two auxiliary converter modules 33.
牵引变流模块32可将整流模块31输入的直流电逆变为交流电，并根据控制指令的要求输出为相应的变频变压电源，对机车牵引、制动实行连续控制。牵引变流可以采用轴控方式，由1个牵引变流模块32控制1台牵引电动机4。The traction converter module 32 can invert the DC power input by the rectifier module 31 into AC power, and output it as a corresponding variable frequency transformer power supply according to the requirements of the control command, and implement continuous control on the traction and braking of the locomotive. The traction current can be controlled by an axis control method, and one traction motor 4 is controlled by one traction converter module 32.
辅助变流模块33可将整流模块31输入的直流电逆变为交流电，负责为辅助***提供逆变电源。The auxiliary converter module 33 can invert the DC power input by the rectifier module 31 into an alternating current, and is responsible for providing an inverter power supply to the auxiliary system.
进一步的，交直流转换模块的数量为多个，机车牵引***还包括：多个输入接触器6，每个输入接触器6对应一个交直流转换模块，且每个输入接触器6用于断开与其对应的交直流转换模块和同步主发电机2之间的电连接。当输入接触器6检测到一个转向架对应的任何一个牵引变流模块32和辅助变流模块33出现过流、短路等重大故障时，能够带电安全切除该转向架，保证故障不扩大。Further, the number of the AC/DC conversion modules is plural, and the locomotive traction system further includes: a plurality of input contactors 6, each of the input contactors 6 corresponding to one AC/DC conversion module, and each input contactor 6 is used for disconnection An electrical connection between the AC/DC conversion module and the synchronous main generator 2 corresponding thereto. When the input contactor 6 detects that any one of the traction converter module 32 and the auxiliary converter module 33 corresponding to one bogie has a major fault such as overcurrent or short circuit, the bogie can be safely cut off to ensure that the fault does not expand.
优选的，交直流转换模块还包括第一交直流转换模块与第二交直流转换模块，第一交直流转换模块包括第一辅助变流模块331与第二辅助变流模块332，第二交直流转换模块包括第三辅助变流模块333与第四辅助变流模块334，第一辅助变流模块331与第三辅助变流模块333互为冗余备份，第二辅助变流模块332与第四辅助变流模块334互为冗余备份，其中，第一辅助变流模块331与第三辅助变流模块333为变频变压(Variable Voltage and Variable Frequency，简称VVVF)辅助变流模块，第二辅助变流模块332与第四辅助变流模块334为定频定压(Constant Voltage and Constant Frequency，简称CVCF)辅助变流模块。Preferably, the AC/DC conversion module further includes a first AC/DC conversion module and a second AC/DC conversion module, where the first AC/DC conversion module includes a first auxiliary current conversion module 331 and a second auxiliary current conversion module 332, and the second AC/DC conversion module The conversion module includes a third auxiliary current conversion module 333 and a fourth auxiliary current conversion module 334. The first auxiliary current conversion module 331 and the third auxiliary current conversion module 333 are mutually redundant backups, and the second auxiliary current conversion module 332 and the fourth. The auxiliary converter modules 334 are mutually redundant backups, wherein the first auxiliary converter module 331 and the third auxiliary converter module 333 are variable voltage and variable frequency (VVVF) auxiliary converter modules, and the second auxiliary The converter module 332 and the fourth auxiliary converter module 334 are constant voltage and constant frequency (CVCF) auxiliary converter modules.
具体的，两组VVVF辅助变流模块和两组CVCF辅助变流模块互为冗余，当其中任意一组故障时，通过自动切换，另一组对应的VVVF或者CVCF为所有的辅助负载5提供电源，每一组辅助变流模块33都有足够大 的容量来保证辅助***的过载能力，解决了现有技术中，辅助变流模块只有一组VVVF和CVCF，当其中一个VVVF或CVCF故障时，只能使用剩下的一个CVCF或VVVF单独为辅助负载供电的问题。Specifically, the two sets of VVVF auxiliary converter modules and the two sets of CVCF auxiliary converter modules are mutually redundant. When any one of them fails, another group of corresponding VVVFs or CVCFs provide for all auxiliary loads 5 Power supply, each set of auxiliary converter modules 33 is large enough The capacity to ensure the overload capacity of the auxiliary system solves the problem in the prior art. The auxiliary converter module has only one set of VVVF and CVCF. When one of the VVVF or CVCF fails, only one of the remaining CVCF or VVVF can be used alone. Load power supply problem.
进一步的，第一辅助变流模块331、第二辅助变流模块332、第三辅助变流模块333和第四辅助变流模块334的输出端均设置有转换接触器10，当转换接触器10对应的辅助变流模块33出现故障时，转换接触器10断开出现故障的辅助变流模块33与辅助负载5之间的连接。Further, the output ends of the first auxiliary converter module 331 , the second auxiliary converter module 332 , the third auxiliary converter module 333 and the fourth auxiliary converter module 334 are all provided with a conversion contactor 10 when the conversion contactor 10 is When the corresponding auxiliary converter module 33 fails, the switching contactor 10 disconnects the connection between the failed auxiliary converter module 33 and the auxiliary load 5.
具体的，转换接触器10用于协助辅助变流器33实现冗余备份，其可以为空气式转换接触器10，当VVVF或者CVCF中的任何一个辅助变流模块33出现故障时，其所对应的接触器自动断开，冗余转换接触器闭合，工作正常的辅助变流模块33驱动VVVF或者CVCF为对应的所有负载提供电源。Specifically, the conversion contactor 10 is configured to assist the auxiliary converter 33 to implement redundancy backup, which may be an air conversion contactor 10, and when any one of the VVVF or CVCF auxiliary failure module 33 fails, the corresponding The contactor is automatically disconnected, the redundant switching contactor is closed, and the working auxiliary auxiliary converter module 33 drives the VVVF or CVCF to supply power to all corresponding loads.
进一步的，本实施例提供的机车牵引***还包括：滤波器7，滤波器7的输入端与交直流转换模块的第二输出端连接，滤波器7的输出端与辅助负载5连接，滤波器7用于对交直流转换模块输出的信号进行滤波。滤波器7可以对辅助变流模块33输出的三相SVPWM波进行滤波，输出符合要求的正弦波供给各个辅助负载5。Further, the locomotive traction system provided in this embodiment further includes: a filter 7, the input end of the filter 7 is connected to the second output end of the AC/DC conversion module, and the output end of the filter 7 is connected to the auxiliary load 5, and the filter 7 is used to filter the signal output by the AC/DC conversion module. The filter 7 can filter the three-phase SVPWM wave output from the auxiliary converter module 33, and output a sine wave that meets the requirements to each auxiliary load 5.
具体的，交直流转换模块的第二输出端与辅助负载5之间还设置有变压充电装置8，变压充电装置8用于将交直流转换模块3第二端输出的电压进行变压，并为机车上的蓄电池充电。变压充电装置8采用相控整流控制技术，当机车运行时，变压充电装置8还可为机车控制电路、照明电路等提供稳定的74VDC电源，同时还用于为机车的蓄电池充电，负责为蓄电池恒压限流充电，根据电池电压和电池箱内的周边温度优化充电电压，限制充电电流以防止损坏蓄电池。输出端的LC滤波器7可以使充电电流波纹最小化。另外，当机车不运行时，充电后的蓄电池可为机车控制电路、照明电路等提供电源。进一步的，本实施例提供的机车牵引***还包括：冷却装置9，冷却装置9用于为机车牵引***进行冷却散热，冷却装置9可以与滤波器7设置在同一个柜内。Specifically, a voltage-changing charging device 8 is further disposed between the second output end of the AC-DC conversion module and the auxiliary load 5, and the voltage-variable charging device 8 is configured to transform the voltage outputted by the second end of the AC-DC conversion module 3, And charge the battery on the locomotive. The variable voltage charging device 8 adopts phase-controlled rectification control technology. When the locomotive is running, the variable voltage charging device 8 can also provide a stable 74 VDC power supply for the locomotive control circuit and the lighting circuit, and is also used for charging the locomotive battery. The battery constant voltage current limiting charging optimizes the charging voltage according to the battery voltage and the peripheral temperature inside the battery box, and limits the charging current to prevent damage to the battery. The LC filter 7 at the output minimizes the charging current ripple. In addition, when the locomotive is not running, the charged battery can provide power for the locomotive control circuit, lighting circuit, and the like. Further, the locomotive traction system provided by the embodiment further includes: a cooling device 9 for cooling and cooling the locomotive traction system, and the cooling device 9 can be disposed in the same cabinet as the filter 7.
本实施例二提供的机车牵引***，通过在交直流转换模块中设置整流模块、牵引变流模块和辅助变流模块，其中，整流模块的输出端分别 与牵引变流模块的输入端以及辅助变流模块的输入端电连接，整流模块将主发电机输入的三相交流电整流为直流电，再分别输入至牵引变流模块和辅助变流模块，进行逆变后输出为交流电，并在交直转换模块内设置四组辅助变流模块，两组输出为变频变压(VVVF)，另外两组输出为定频定压(CVCF)，当VVVF或者CVCF中的任何一个辅助变流器出现故障时，其所对应的转换接触器断开，冗余转换接触器闭合，另一组对应的VVVF或者CVCF为所有的辅助负载提供电源，实现了冗余备份，提高了机车辅助***的可靠性。同时，本实施例提供的机车牵引***通过一个同步主发电机同时为牵引电动机和辅助负载提供电力，在交直流转换模块中设置相应的模块，可不仅适用于交直流电力传动机车，也适用于交-直-交流电力传动机车，适用性好。The locomotive traction system provided in the second embodiment provides a rectifier module, a traction converter module and an auxiliary converter module in the AC/DC conversion module, wherein the output ends of the rectifier modules are respectively It is electrically connected with the input end of the traction converter module and the input end of the auxiliary converter module, and the rectifier module rectifies the three-phase alternating current input by the main generator into direct current, and then inputs to the traction converter module and the auxiliary converter module respectively to perform the inverse After the change, the output is AC, and four sets of auxiliary converter modules are set in the AC-DC conversion module. The two sets of outputs are variable frequency variable voltage (VVVF), and the other two outputs are fixed frequency constant voltage (CVCF), when in VVVF or CVCF. When any auxiliary converter fails, its corresponding conversion contactor is disconnected, the redundant conversion contactor is closed, and another corresponding VVVF or CVCF supplies power to all auxiliary loads, realizing redundant backup and improving The reliability of the locomotive auxiliary system. At the same time, the locomotive traction system provided by the embodiment provides power for the traction motor and the auxiliary load through a synchronous main generator, and the corresponding module is set in the AC/DC conversion module, which is applicable not only to the AC/DC power transmission locomotive, but also to the locomotive traction system. AC-straight-AC power transmission locomotive, good applicability.
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 (10)

  1. 一种机车牵引***，其特征在于，包括：内燃机、同步主发电机、交直流转换模块、牵引电动机和辅助负载；A locomotive traction system, comprising: an internal combustion engine, a synchronous main generator, an AC/DC conversion module, a traction motor and an auxiliary load;
    所述同步主发电机的输入端与所述内燃机连接，所述同步主发电机用于在所述内燃机做功时产生电流；所述交直流转换模块的输入端与所述发电机输出端电连接，所述交直流转换模块的第一输出端与所述牵引电动机电连接，所述交直流转换模块的第二输出端与所述辅助负载电连接，所述牵引电动机用于牵引机车运动。An input end of the synchronous main generator is connected to the internal combustion engine, and the synchronous main generator is configured to generate a current when the internal combustion engine is working; the input end of the AC/DC conversion module is electrically connected to the output end of the generator The first output end of the AC/DC conversion module is electrically connected to the traction motor, and the second output end of the AC/DC conversion module is electrically connected to the auxiliary load, and the traction motor is used for pulling the locomotive to move.
  2. 根据权利要求1所述的机车牵引***，其特征在于，所述交直流转换模块包括整流模块，所述整流模块的输入端与所述同步主发电机电连接，所述整流模块的第一输出端为所述交直流转换模块的第一输出端，所述整流模块的第二输出端为所述交直流转换模块的第二输出端。The locomotive traction system according to claim 1, wherein the AC/DC conversion module comprises a rectifier module, an input end of the rectifier module is electrically connected to the synchronous main generator, and a first output end of the rectifier module The first output end of the AC/DC conversion module is a second output end of the AC/DC conversion module.
  3. 根据权利要求1所述的机车牵引***，其特征在于，所述交直流转换模块包括整流模块、牵引变流模块和辅助变流模块，所述整流模块输入端与所述同步主发电机电连接，所述整流模块的输出端分别与所述牵引变流模块的输入端以及所述辅助变流模块的输入端电连接，所述牵引变流模块的输出端为所述交直流转换模块的第一输出端，所述辅助变流模块的输出端为所述交直流转换模块的第二输出端。The locomotive traction system according to claim 1, wherein the AC/DC conversion module comprises a rectifier module, a traction converter module and an auxiliary converter module, and the input end of the rectifier module is electrically connected to the synchronous main generator. The output end of the rectifier module is electrically connected to the input end of the traction converter module and the input end of the auxiliary converter module, and the output end of the traction converter module is the first of the AC/DC conversion module. The output end of the auxiliary converter module is a second output end of the AC/DC conversion module.
  4. 根据权利要求3所述的机车牵引***，其特征在于，所述交直流转换模块的数量为多个，所述机车牵引***还包括：多个输入接触器，每个输入接触器对应一个所述交直流转换模块，且每个所述输入接触器用于断开与其对应的交直流转换模块和所述同步主发电机之间的电连接。The locomotive traction system according to claim 3, wherein the number of the AC/DC conversion modules is plural, and the locomotive traction system further comprises: a plurality of input contactors, each of the input contactors corresponding to one of the And an AC/DC conversion module, and each of the input contactors is configured to disconnect an electrical connection between the AC/DC conversion module corresponding thereto and the synchronous main generator.
  5. 根据权利要求4所述的机车牵引***，其特征在于，所述交直流转换模块包括第一交直流转换模块与第二交直流转换模块，所述第一交直流转换模块包括第一辅助变流模块与第二辅助变流模块，所述第二交直流转换模块包括第三辅助变流模块与第四辅助变流模块，所述第一辅助变流模块与所述第三辅助变流模块互为冗余备份，所述第二辅助变流模块与所述第四辅助变流模块互为冗余备份，其中，所述第一辅助变流模块与所述第三辅助变流模块为变频变压VVVF辅助变流模块，所述第二 辅助变流模块与所述第四辅助变流模块为定频定压CVCF辅助变流模块。The locomotive traction system according to claim 4, wherein the AC/DC conversion module comprises a first AC/DC conversion module and a second AC/DC conversion module, and the first AC/DC conversion module includes a first auxiliary current conversion system. a module and a second auxiliary converter module, the second AC/DC conversion module includes a third auxiliary converter module and a fourth auxiliary converter module, the first auxiliary converter module and the third auxiliary converter module are mutually For the redundant backup, the second auxiliary converter module and the fourth auxiliary converter module are redundantly backed up, wherein the first auxiliary converter module and the third auxiliary converter module are frequency-variable Pressing VVVF auxiliary converter module, said second The auxiliary converter module and the fourth auxiliary converter module are fixed frequency constant voltage CVCF auxiliary converter modules.
  6. 根据权利要求5所述的机车牵引***，其特征在于，所述第一辅助变流模块、所述第二辅助变流模块、所述第三辅助变流模块和所述第四辅助变流模块的输出端均设置有转换接触器，当所述转换接触器对应的辅助变流模块出现故障时，所述转换接触器断开出现故障的辅助变流模块与辅助负载之间的连接。The locomotive traction system according to claim 5, wherein the first auxiliary converter module, the second auxiliary converter module, the third auxiliary converter module, and the fourth auxiliary converter module The output terminals are each provided with a switching contactor, and when the auxiliary converter module corresponding to the switching contactor fails, the switching contactor disconnects the connection between the failed auxiliary converter module and the auxiliary load.
  7. 根据权利要求1-6任一项所述的机车牵引***，其特征在于，还包括：滤波器，所述滤波器的输入端与所述交直流转换模块的第二输出端连接，所述滤波器的输出端与所述辅助负载连接，所述滤波器用于对所述交直流转换模块输出的信号进行滤波。The locomotive traction system according to any one of claims 1 to 6, further comprising: a filter, wherein an input end of the filter is connected to a second output end of the AC/DC conversion module, and the filtering An output of the device is coupled to the auxiliary load, and the filter is configured to filter a signal output by the AC/DC conversion module.
  8. 根据权利要求1-6任一项所述的机车牵引***，其特征在于，所述交直流转换模块的第二输出端与所述辅助负载之间还设置有变压充电装置，所述变压充电装置用于将所述交直流转换模块第二输出端输出的电压进行变压；The locomotive traction system according to any one of claims 1 to 6, wherein a variable voltage charging device is further disposed between the second output end of the AC/DC converting module and the auxiliary load, and the variable voltage is The charging device is configured to transform a voltage outputted by the second output end of the AC/DC conversion module;
    所述变压充电装置还用于为所述机车的蓄电池充电。The transformer charging device is also used to charge a battery of the locomotive.
  9. 根据权利要求1-6任一项所述的机车牵引***，其特征在于，还包括：冷却装置，所述冷却装置用于为所述机车牵引***进行冷却散热。The locomotive traction system according to any one of claims 1 to 6, characterized by further comprising: a cooling device for cooling and cooling the locomotive traction system.
  10. 根据权利要求1-6任一项所述的机车牵引***，其特征在于，所述辅助负载包括冷却风扇、通风机、空气压缩机、空调机组以及车体通风机。 The locomotive traction system according to any one of claims 1 to 6, wherein the auxiliary load comprises a cooling fan, a ventilator, an air compressor, an air conditioning unit, and a vehicle body ventilator.
PCT/CN2015/095611 2015-11-11 2015-11-26 Locomotive traction system WO2017080000A1 (en)

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