WO2021189572A1 - Traction system for magnetic levitation train, and rail train - Google Patents

Traction system for magnetic levitation train, and rail train Download PDF

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Publication number
WO2021189572A1
WO2021189572A1 PCT/CN2020/085808 CN2020085808W WO2021189572A1 WO 2021189572 A1 WO2021189572 A1 WO 2021189572A1 CN 2020085808 W CN2020085808 W CN 2020085808W WO 2021189572 A1 WO2021189572 A1 WO 2021189572A1
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WO
WIPO (PCT)
Prior art keywords
traction
power supply
long stator
train
converter
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PCT/CN2020/085808
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French (fr)
Chinese (zh)
Inventor
张丽
杨君
李颖华
刘曰峰
高明
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中车唐山机车车辆有限公司
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Publication of WO2021189572A1 publication Critical patent/WO2021189572A1/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
    • B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
    • B60L13/03—Electric propulsion by linear motors
    • 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
    • B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
    • B60L13/04—Magnetic suspension or levitation for vehicles

Definitions

  • This application relates to the technical field of rail vehicles, in particular, to a traction system of a maglev train and a rail train.
  • the high-speed maglev train uses a long stator linear synchronous motor for traction.
  • the secondary of the linear synchronous motor is distributed on both sides of the bogie.
  • the long stator sections of the linear synchronous motor are staggered and arranged on both sides of the track, and three traction modules are arranged on the ground.
  • the stator segments on both sides of the track are powered by three traction modules in a three-step staggered manner.
  • This traction power supply mode requires the secondary side of the linear synchronous motor to be installed on both sides of the rail train to ensure that the secondary side of the linear synchronous motor and the stator section react to the force, so that the design structure on both sides of the vehicle bogie must meet the traction demand.
  • the suspension design requirements must be used concurrently, resulting in a complex design of the bogie structure and an increase in the probability of failure.
  • the traction system of the traditional maglev train has a complex structure and high requirements on the bogie of the train, which is an urgent technical problem to be solved by those skilled in the art.
  • the embodiments of the present application provide a traction system for a maglev train and a rail train.
  • the traction system of a traditional maglev train has a complicated structure and a technical problem with high requirements for the bogie of the train.
  • the embodiment of the present application provides a traction system for a magnetic levitation train, including:
  • Linear synchronous motor the secondary of the linear synchronous motor is arranged in the middle of the train bogie; the long stator of the linear synchronous motor is laid between the two rails along the track, and the long stator is arranged at intervals in sequence.
  • Each of the long stator segments forms at least one traction power supply section, and the traction power supply section includes at least two long stator sections;
  • each of the traction power supply sections is configured with one traction power supply system for alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train;
  • the long stator section when the long stator section is powered, it can generate a force with the secondary of the linear synchronous motor to generate train traction, and drive the maglev train to move forward.
  • a rail train includes the above-mentioned traction system.
  • the long stator of the motor is laid between the two rails along the track, and the installation position of the long stator is also one, and the installation requirements and installation complexity are low.
  • the long stator sections arranged at intervals are divided into at least one traction power supply section, the traction power supply section includes at least two long stator sections, and the traction power supply system alternately supplies power to each long stator section in the traction power supply section along the forward direction of the train .
  • the traction system of the maglev train of the embodiment of the present application has a simple structure, has low requirements on the bogie of the train, and has low installation requirements and installation complexity.
  • FIG. 1 is a schematic diagram of a traction system of a maglev train according to an embodiment of the application
  • Fig. 2 is a schematic diagram of current changes in the traction system of the maglev train shown in Fig. 1 alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train.
  • FIG. 1 is a schematic diagram of a traction system of a magnetic levitation train according to an embodiment of the application.
  • the traction system of the magnetic levitation train of the embodiment of the present application includes:
  • Linear synchronous motor the secondary of the linear synchronous motor is arranged in the middle of the train bogie; the long stator of the linear synchronous motor is laid between the two rails along the track, and the long stator is arranged at intervals in sequence.
  • Each of the long stator segments 110 forms at least one traction power supply section, and the traction power supply section includes at least two long stator sections;
  • each of the traction power supply sections is configured with one traction power supply system for alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train;
  • the long stator section 110 when the long stator section 110 is powered, it can generate a force with the secondary of the linear synchronous motor to generate train traction, and drive the maglev train to move forward.
  • the long stator of the motor is laid between the two rails along the track, and the installation position of the long stator is also one, and the installation requirements and installation complexity are low.
  • the long stator sections arranged at intervals are divided into at least one traction power supply section, the traction power supply section includes at least two long stator sections, and the traction power supply system alternately supplies power to each long stator section in the traction power supply section along the forward direction of the train .
  • the traction system of the maglev train of the embodiment of the present application has a simple structure, has low requirements on the bogie of the train, and has low installation requirements and installation complexity.
  • the track used for the maglev train is very long, and the long stator needs to be laid between the two rails along the entire length of the track. Therefore, multiple traction power supply systems are required to supply power to the train, and the long stator is divided into multiple sequential ones. Arranged traction power supply zones.
  • the traction system of the magnetic levitation train of the embodiment of the present application solves the technical problem of traction power supply between the long stator segments in the same traction power supply section.
  • the traction power supply system is arranged beside the track.
  • the traction power supply system is specifically used to ensure that the actual deviation between the actual value of the traction force of the train and the preset value of the constant speed traction force does not exceed the preset value when the train passes through two long stator segments that are alternately powered in the same traction power supply section. Scope;
  • the preset value of the constant speed traction force is the preset value of the traction force required by the train to maintain a constant speed.
  • the preset range can be set. Through the setting of the preset range, the actual value of the traction force of the train can be kept unchanged, so that the speed of the maglev train changes when the maglev train passes adjacent positions of two long stator sections in the same traction power supply section. Smaller.
  • Traction power supply system needs to have the following characteristics.
  • the traction power supply system includes:
  • each of the converter control switches 220 is alternately connected to the two traction converters;
  • the converter control switch 220 is used to control whether the long stator section connected to the converter control switch and the traction converter 210 form a circuit path.
  • the traction power supply system further includes:
  • the zone traction control unit 230 is communicatively connected with each of the converter control switches 220;
  • the zone traction control unit 230 is used for receiving control instructions issued by the train control system, and controlling the on and off of the converter control switch 220 according to the control instructions.
  • the zone traction control unit realizes the control of the on and off of the converter control switch.
  • the traction power supply system further includes:
  • a converter control unit 240 connected in one-to-one correspondence with the traction converter
  • the zonal traction control unit 230 is also used to send a power supply current control instruction to the converter control unit 240; the converter control unit 240 is used to control the connection of the switch corresponding to the long stator section. When it is on, the current output by the traction converter 210 is controlled according to the power supply current control command as the power supply current of the long stator section.
  • zone traction control unit and the converter control unit cooperate with each other to realize the control of the power supply current of the long stator section.
  • Fig. 2 is a schematic diagram of current changes in the traction system of the maglev train shown in Fig. 1 alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train.
  • the n-th long stator section maintains the power supply according to the preset value of constant-speed current
  • the n-th long stator section is the long stator section where the train is currently located, and n is a positive integer greater than or equal to 1;
  • the zonal traction control unit turns on the converter control switch connected to the n+1th long stator section, and sends a current increase command to the converter control unit connected to the n+1th long stator section;
  • the traction converter connected to a long stator section receives the current increase command to start, the power supply current rises, and when the train starts to enter the n+1th long stator section, the traction converter connected to the n+1th long stator section
  • the power supply current of the device reaches the preset value of the constant speed current;
  • the preset starting position is set at a position close to the tail of the current long stator segment
  • the constant-speed current preset value is the current value corresponding to the constant-speed traction force preset value
  • the power supply current control command includes a current increase command .
  • the n-th long stator segment continues to supply power according to the preset value of constant-speed current, and at this time,
  • the traction converter connected to the n+1th long stator section receives the current increase command to start, and the power supply current rises.
  • the n+1th long stator section is connected to the The power supply current of the traction converter reaches the preset value of the constant speed current.
  • the train’s tractive force is the nth long stator section and the n+1th long stator section after the train starts from the preset starting position of the nth long stator section to the time when the train starts to enter the n+1th long stator section.
  • the traction force provided by the stator section is superimposed, and the train traction force changes little.
  • the partitioned traction control unit sends a current drop instruction to the converter control unit connected to the n-th long stator segment, and after the traction converter connected to the n-th long stator segment receives the current drop instruction, the power supply current drops, And when the train completely enters the n+1 long stator section, the power supply current of the traction converter connected to the n long stator section drops to zero;
  • the (n+1)th long stator segment maintains the power supply according to the preset value of the constant-speed current
  • the power supply current control command includes a current drop command.
  • the traction force of the train is the nth long stator section and the n+1th long stator section.
  • the traction provided by the long stator section is superimposed, and the change of the traction of the train is small.
  • zoned traction control unit and the converter control unit perform closed-loop control on the power supply current of the traction converter.
  • a current sensor needs to be provided for each traction converter, and the current value according to the current sensor is input to the zonal traction control unit to adjust the current value in the current rising command and the current falling command.
  • the length of the long stator segment is greater than the length of the train.
  • Two long stator sections for power supply are a preferred embodiment for configuring two traction power supply systems for power supply in the traction power supply section.
  • the traction power supply system further includes:
  • the traction rectifier unit 250 and the power supply device 260 are sequentially connected in series from the traction inverter to the external grid interface;
  • the power supply equipment 260 is used to step down the AC high voltage power connected to the external power grid interface to form low voltage AC power; the traction rectifier unit 250 is used to convert the connected low voltage AC power into low voltage DC power, which is provided to the traction Converter 210.
  • the traction rectifier unit and the power supply equipment realize the step-down rectification of the high-voltage alternating current connected to the external power grid to form low-voltage alternating current, which is provided to the traction converter.
  • the traction control system further includes a power supply control unit 270;
  • the power supply equipment 260 includes an input switch cabinet 261 and a traction transformer 262 connected in series;
  • the power supply control unit 270 is used to control the main switch of the input switch cabinet 261 to control whether the power supply device 260 supplies power.
  • the power supply control unit realizes the control of whether the power supply device supplies power.
  • the traction power supply system further includes a brake chopper 281 and a brake resistor 282 connected in series to form a loop with the traction rectifier unit 250;
  • the power supply control unit 270 is also used to connect the braking resistor 282 to perform braking when the train is electrically braking when the power supply device 26 supplies power, and disconnect the braking resistor 282 when the train is towed.
  • the braking resistor is connected for braking when the train is electrically braking. At this time, the traction converter cannot supply power, and the braking resistor is disconnected when the train is traction. At this time, the traction converter can supply power.
  • the traction power supply system is in a traction substation.
  • each traction converter has a capacity of 4 megawatts (MVA).
  • connection can also be detachable or integrated; it can be mechanical, electrical, or communication; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. Or the interaction between two elements.
  • connection can also be detachable or integrated; it can be mechanical, electrical, or communication; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. Or the interaction between two elements.
  • the "on" or “under” of the first feature of the second feature may include direct contact between the first feature and the second feature, or include the first feature.
  • the second feature is not in direct contact but through another feature between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the first feature of the second feature include the first feature directly above and diagonally above the second feature, or it simply means that the level of the first feature is smaller than the second feature.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

A traction system for a magnetic levitation train, the traction system comprising: a linear synchronous electric motor, wherein a secondary of the linear synchronous electric motor is arranged at the middle of a train bogie, a long stator of the linear synchronous electric motor is laid between two rail bars along a rail, the long stator is formed by a plurality of long stator segments (110) sequentially arranged at intervals, each long stator segment (110) forms at least one traction power supply section, and the traction power supply section comprises the at least two long stator segments (110); and traction power supply systems, wherein each traction power supply section is configured with one traction power supply system, which is used for alternately supplying power to each long stator segment (110) in the traction power supply section in an advancing direction of a train. When power is supplied to the long stator segment (110), an acting force can be generated between the long stator segment (110) and the secondary of the linear synchronous electric motor to generate a train traction force so as to drive a magnetic levitation train to move forwards. The technical problems of a traction system of a traditional magnetic levitation train being complex in terms of structure and requirements for a train bogie being high are solved. A rail train comprising the traction system is further provided.

Description

一种磁悬浮列车的牵引***及轨道列车Traction system of maglev train and track train 技术领域Technical field
本申请涉及轨道车辆技术领域，具体地，涉及一种磁悬浮列车的牵引***及轨道列车。This application relates to the technical field of rail vehicles, in particular, to a traction system of a maglev train and a rail train.
背景技术Background technique
高速磁悬浮列车采用长定子直线同步电机进行牵引，直线同步电机的次级分布在转向架两侧，直线同步电机的长定子段互相错开设置在轨道的两侧，三个牵引模块设置在地面。轨道两侧的定子段由三个牵引模块以三步法形式交错供电。这种牵引供电方式需要轨道列车的两侧均设置直线同步电机的次级，以保证直线同步电机次级和定子段进行作用力反应，造成车辆的转向架两侧设计结构既要满足牵引需求，又要兼用悬浮设计要求，从而造成转向架结构设计复杂，导致故障发生的几率也会增加。The high-speed maglev train uses a long stator linear synchronous motor for traction. The secondary of the linear synchronous motor is distributed on both sides of the bogie. The long stator sections of the linear synchronous motor are staggered and arranged on both sides of the track, and three traction modules are arranged on the ground. The stator segments on both sides of the track are powered by three traction modules in a three-step staggered manner. This traction power supply mode requires the secondary side of the linear synchronous motor to be installed on both sides of the rail train to ensure that the secondary side of the linear synchronous motor and the stator section react to the force, so that the design structure on both sides of the vehicle bogie must meet the traction demand. The suspension design requirements must be used concurrently, resulting in a complex design of the bogie structure and an increase in the probability of failure.
因此，传统的磁悬浮列车的牵引***结构复杂，对列车的转向架要求高，是本领域技术人员急需要解决的技术问题。Therefore, the traction system of the traditional maglev train has a complex structure and high requirements on the bogie of the train, which is an urgent technical problem to be solved by those skilled in the art.
在背景技术中公开的上述信息仅用于加强对本申请的背景的理解，因此其可能包含没有形成为本领域普通技术人员所知晓的相关技术的信息。The above-mentioned information disclosed in the background art is only used to strengthen the understanding of the background of the application, and therefore it may contain information that does not form related technologies known to those of ordinary skill in the art.
发明内容Summary of the invention
本申请实施例提供了一种磁悬浮列车的牵引***及轨道列车，以传统的磁悬浮列车的牵引***结构复杂，对列车的转向架要求高的技术问题。The embodiments of the present application provide a traction system for a maglev train and a rail train. The traction system of a traditional maglev train has a complicated structure and a technical problem with high requirements for the bogie of the train.
本申请实施例提供了一种磁悬浮列车的牵引***，包括：The embodiment of the present application provides a traction system for a magnetic levitation train, including:
直线同步电机，所述直线同步电机的次级设置在列车转向架的中部；所述直线同步电机的长定子沿轨道铺设在两条轨条之间，所述长定子由多个顺次间隔设置的长定子段形成；各个所述长定子段形成至少一个牵引供电区间，所述 牵引供电区间包括至少两个长定子段；Linear synchronous motor, the secondary of the linear synchronous motor is arranged in the middle of the train bogie; the long stator of the linear synchronous motor is laid between the two rails along the track, and the long stator is arranged at intervals in sequence. Each of the long stator segments forms at least one traction power supply section, and the traction power supply section includes at least two long stator sections;
牵引供电***，每个所述牵引供电区间配置一个所述牵引供电***，用于沿所述列车的前进方向交替为牵引供电区间内的各个长定子段供电；A traction power supply system, each of the traction power supply sections is configured with one traction power supply system for alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train;
其中，所述长定子段被供电时能与所述直线同步电机的次级发生作用力产生列车牵引力，驱动磁悬浮列车前进。Wherein, when the long stator section is powered, it can generate a force with the secondary of the linear synchronous motor to generate train traction, and drive the maglev train to move forward.
本申请实施例还提供以下技术方案：The embodiments of this application also provide the following technical solutions:
一种轨道列车，包括上述牵引***。A rail train includes the above-mentioned traction system.
本申请实施例由于采用以上技术方案，具有以下技术效果：Due to the adoption of the above technical solutions, the embodiments of the application have the following technical effects:
需要与转向架安装的仅有直线同步电机的次级，且仅需要安装在转向架的中部这一个位置，安装要求和安装的复杂性较低；与直线同步电机的次级相对应，直线同步电机的长定子就沿轨道铺设在两条轨条之间，长定子的安装位置也是一个，安装要求和安装的复杂性较低。顺次间隔排列的长定子段被划分为至少一个牵引供电区间，牵引供电区间包括至少两个长定子段，牵引供电***沿所述列车的前进方向交替为牵引供电区间内的各个长定子段供电。本申请实施例的磁悬浮列车的牵引***结构简单，对列车的转向架要求低，安装要求和安装的复杂性也较低。Only the secondary of the linear synchronous motor needs to be installed with the bogie, and only needs to be installed in the middle of the bogie. The installation requirements and complexity of installation are low; corresponding to the secondary of the linear synchronous motor, linear synchronous The long stator of the motor is laid between the two rails along the track, and the installation position of the long stator is also one, and the installation requirements and installation complexity are low. The long stator sections arranged at intervals are divided into at least one traction power supply section, the traction power supply section includes at least two long stator sections, and the traction power supply system alternately supplies power to each long stator section in the traction power supply section along the forward direction of the train . The traction system of the maglev train of the embodiment of the present application has a simple structure, has low requirements on the bogie of the train, and has low installation requirements and installation complexity.
附图说明Description of the drawings
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:
图1为本申请实施例的一种磁悬浮列车的牵引***的示意图；FIG. 1 is a schematic diagram of a traction system of a maglev train according to an embodiment of the application;
图2为图1所示磁悬浮列车的牵引***沿所述列车的前进方向交替为牵引供电区间内的各个长定子段供电的电流变化示意图。Fig. 2 is a schematic diagram of current changes in the traction system of the maglev train shown in Fig. 1 alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train.
附图标记说明：Description of reference signs:
110长定子段，110 long stator segments,
210牵引变流器，220变流器控制开关，230分区牵引控制单元，210 traction converter, 220 converter control switch, 230 zone traction control unit,
240变流器控制单元，250牵引整流单元，240 converter control unit, 250 traction rectifier unit,
260供电设备，261输入开关柜，262牵引变压器，260 power supply equipment, 261 input switch cabinet, 262 traction transformer,
270供电控制单元，281制动斩波器，282制动电阻。270 power supply control unit, 281 brake chopper, 282 brake resistor.
具体实施方式Detailed ways
为了使本申请实施例中的技术方案及优点更加清楚明白，以下结合附图对本申请的示例性实施例进行进一步详细的说明，显然，所描述的实施例仅是本申请的一部分实施例，而不是所有实施例的穷举。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。In order to make the technical solutions and advantages of the embodiments of the present application clearer, the exemplary embodiments of the present application will be described in further detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and Not all examples are exhaustive. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict.
实施例一Example one
图1为本申请实施例的一种磁悬浮列车的牵引***的示意图。FIG. 1 is a schematic diagram of a traction system of a magnetic levitation train according to an embodiment of the application.
如图1所示，本申请实施例的磁悬浮列车的牵引***，包括：As shown in Fig. 1, the traction system of the magnetic levitation train of the embodiment of the present application includes:
直线同步电机，所述直线同步电机的次级设置在列车转向架的中部；所述直线同步电机的长定子沿轨道铺设在两条轨条之间，所述长定子由多个顺次间隔设置的长定子段110形成；各个所述长定子段110形成至少一个牵引供电区间，所述牵引供电区间包括至少两个长定子段；Linear synchronous motor, the secondary of the linear synchronous motor is arranged in the middle of the train bogie; the long stator of the linear synchronous motor is laid between the two rails along the track, and the long stator is arranged at intervals in sequence. Each of the long stator segments 110 forms at least one traction power supply section, and the traction power supply section includes at least two long stator sections;
牵引供电***，每个所述牵引供电区间配置一个所述牵引供电***，用于沿所述列车的前进方向交替为牵引供电区间内的各个长定子段供电；A traction power supply system, each of the traction power supply sections is configured with one traction power supply system for alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train;
其中，所述长定子段110被供电时能与所述直线同步电机的次级发生作用力产生列车牵引力，驱动磁悬浮列车前进。Wherein, when the long stator section 110 is powered, it can generate a force with the secondary of the linear synchronous motor to generate train traction, and drive the maglev train to move forward.
需要与转向架安装的仅有直线同步电机的次级，且仅需要安装在转向架的中部这一个位置，安装要求和安装的复杂性较低；与直线同步电机的次级相对应，直线同步电机的长定子就沿轨道铺设在两条轨条之间，长定子的安装位置也是一个，安装要求和安装的复杂性较低。顺次间隔排列的长定子段被划分为至少一个牵引供电区间，牵引供电区间包括至少两个长定子段，牵引供电***沿所述列车的前进方向交替为牵引供电区间内的各个长定子段供电。本申请实施例的磁悬浮列车的牵引***结构简单，对列车的转向架要求低，安装要求和 安装的复杂性也较低。Only the secondary of the linear synchronous motor needs to be installed with the bogie, and only needs to be installed in the middle of the bogie. The installation requirements and complexity of installation are low; corresponding to the secondary of the linear synchronous motor, linear synchronous The long stator of the motor is laid between the two rails along the track, and the installation position of the long stator is also one, and the installation requirements and installation complexity are low. The long stator sections arranged at intervals are divided into at least one traction power supply section, the traction power supply section includes at least two long stator sections, and the traction power supply system alternately supplies power to each long stator section in the traction power supply section along the forward direction of the train . The traction system of the maglev train of the embodiment of the present application has a simple structure, has low requirements on the bogie of the train, and has low installation requirements and installation complexity.
用于磁悬浮列车的轨道很长的，长定子需要沿着整个轨道的长度铺设在两条轨条之间，因此，需要多个牵引供电***为列车供电，进而将长定子划分为多个顺次排列的牵引供电区间。本申请实施例的磁悬浮列车的牵引***，解决的是同一个牵引供电区间内的各个长定子段之间的牵引供电的技术问题。The track used for the maglev train is very long, and the long stator needs to be laid between the two rails along the entire length of the track. Therefore, multiple traction power supply systems are required to supply power to the train, and the long stator is divided into multiple sequential ones. Arranged traction power supply zones. The traction system of the magnetic levitation train of the embodiment of the present application solves the technical problem of traction power supply between the long stator segments in the same traction power supply section.
具体的，牵引供电***设置在轨道旁。Specifically, the traction power supply system is arranged beside the track.
实施中，所述牵引供电***具体用于在列车通过同一牵引供电区间内交替供电的两个长定子段的过程中，列车牵引力的实际值与匀速牵引力预设值的实际偏差率不超过预设范围；In implementation, the traction power supply system is specifically used to ensure that the actual deviation between the actual value of the traction force of the train and the preset value of the constant speed traction force does not exceed the preset value when the train passes through two long stator segments that are alternately powered in the same traction power supply section. Scope;
其中，所述匀速牵引力预设值是列车保持匀速所需的牵引力预设值。Wherein, the preset value of the constant speed traction force is the preset value of the traction force required by the train to maintain a constant speed.
预设范围是能够进行设置的，通过预设范围的设置，能够保持列车牵引力的实际值变化不大，进而使得磁悬浮列车经过同一牵引供电区间内两个长定子段相邻位置时，磁悬浮列车的速度变化较小。The preset range can be set. Through the setting of the preset range, the actual value of the traction force of the train can be kept unchanged, so that the speed of the maglev train changes when the maglev train passes adjacent positions of two long stator sections in the same traction power supply section. Smaller.
为了实现磁悬浮列车经过同一牵引供电区间内两个长定子段相邻位置时，磁悬浮列车的速度变化较小。牵引供电***需要具备如下特点。In order to realize that when the maglev train passes the adjacent positions of two long stator segments in the same traction power supply section, the speed change of the maglev train is small. Traction power supply system needs to have the following characteristics.
实施中，如图1所示，所述牵引供电***包括：In implementation, as shown in Figure 1, the traction power supply system includes:
两个牵引变流器210；Two traction converters 210;
与所述长定子段一一对应连接的变流器控制开关220，各个所述变流器控制开关220交替与两个所述牵引变流器连接；The converter control switches 220 connected to the long stator section in a one-to-one correspondence, each of the converter control switches 220 is alternately connected to the two traction converters;
其中，所述变流器控制开关220用于控制所述变流器控制开关所连接的长定子段和牵引变流器210是否形成电路通路。Wherein, the converter control switch 220 is used to control whether the long stator section connected to the converter control switch and the traction converter 210 form a circuit path.
这样，某一长定子段是否与牵引变流器连接，必须要实现与该长定子段连接的变流器控制开关是处于接通状态。如果处于断开状态，则该长定子段不工作，没有通过供电电流；如果处于接通状态，该长定子段与一个牵引变流器处理接通状态，是否提供供电电流，取决于牵引变流器是否输出电流。同时，两 个牵引变流器交替为牵引供电区间内的各个长定子段供电，采用的是两步法牵引供电方式，需要的牵引变流器的数量较少。In this way, whether a long stator section is connected to the traction converter, it is necessary to realize that the converter control switch connected to the long stator section is in the on state. If it is in the off state, the long stator section does not work and no power supply current is passed; if it is in the on state, the long stator section and a traction converter are in the on state. Whether to provide power supply current depends on the traction converter. Whether the device is outputting current. At the same time, two traction converters alternately supply power to each long stator segment in the traction power supply interval. The two-step traction power supply method is adopted, and the number of traction converters required is small.
实施中，如图1所示，所述牵引供电***还包括：In implementation, as shown in Figure 1, the traction power supply system further includes:
分区牵引控制单元230，与各个所述变流器控制开关220通信连接；The zone traction control unit 230 is communicatively connected with each of the converter control switches 220;
其中，所述分区牵引控制单元230用于负责接收列车控制***发出的控制指令，并根据控制指令控制所述变流器控制开关220的接通和断开。Wherein, the zone traction control unit 230 is used for receiving control instructions issued by the train control system, and controlling the on and off of the converter control switch 220 according to the control instructions.
这样，分区牵引控制单元实现了所述变流器控制开关的接通和断开的控制。In this way, the zone traction control unit realizes the control of the on and off of the converter control switch.
实施中，如图1所示，所述牵引供电***还包括：In implementation, as shown in Figure 1, the traction power supply system further includes:
与所述牵引变流器一一对应通信连接的变流器控制单元240；A converter control unit 240 connected in one-to-one correspondence with the traction converter;
其中，所述分区牵引控制单元230还用于向所述变流器控制单元240发送供电电流控制指令；所述变流器控制单元240用于在长定子段对应的变流器控制开关的接通的情况下，根据供电电流控制指令控制所述牵引变流器210输出的电流，作为所述长定子段的供电电流。Wherein, the zonal traction control unit 230 is also used to send a power supply current control instruction to the converter control unit 240; the converter control unit 240 is used to control the connection of the switch corresponding to the long stator section. When it is on, the current output by the traction converter 210 is controlled according to the power supply current control command as the power supply current of the long stator section.
这样，分区牵引控制单元和变流器控制单元相互配合，实现了长定子段供电电流的控制。In this way, the zone traction control unit and the converter control unit cooperate with each other to realize the control of the power supply current of the long stator section.
图2为图1所示磁悬浮列车的牵引***沿所述列车的前进方向交替为牵引供电区间内的各个长定子段供电的电流变化示意图。Fig. 2 is a schematic diagram of current changes in the traction system of the maglev train shown in Fig. 1 alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train.
如图2所示，具体的，在列车达到第n个长定子段的预设启动位置时：As shown in Figure 2, specifically, when the train reaches the preset starting position of the n-th long stator segment:
第n个长定子段保持按照匀速电流预设值供电，第n个长定子段为列车当前所在的长定子段，n是大于等于1的正整数；The n-th long stator section maintains the power supply according to the preset value of constant-speed current, the n-th long stator section is the long stator section where the train is currently located, and n is a positive integer greater than or equal to 1;
所述分区牵引控制单元接通第n+1个长定子段连接的变流器控制开关，并向第n+1个长定子段对应连接的变流器控制单元发送电流上升指令；第n+1个长定子段连接的牵引变流器接收到电流上升指令启动，供电电流上升，且在列车开始进入第n+1个长定子段时，第n+1个长定子段连接的牵引变流器的供电 电流达到所述匀速电流预设值；The zonal traction control unit turns on the converter control switch connected to the n+1th long stator section, and sends a current increase command to the converter control unit connected to the n+1th long stator section; The traction converter connected to a long stator section receives the current increase command to start, the power supply current rises, and when the train starts to enter the n+1th long stator section, the traction converter connected to the n+1th long stator section The power supply current of the device reaches the preset value of the constant speed current;
其中，所述预设启动位置设置在当前长定子段中靠近尾部的位置，所述匀速电流预设值是所述匀速牵引力预设值对应的电流值，所述供电电流控制指令包括电流上升指令。Wherein, the preset starting position is set at a position close to the tail of the current long stator segment, the constant-speed current preset value is the current value corresponding to the constant-speed traction force preset value, and the power supply current control command includes a current increase command .
即列车的头车接近第n个长定子段的靠近尾部的位置即将开始进入第n+1个长定子段时，第n个长定子段继续按照匀速电流预设值供电，而在此时，第n+1个长定子段连接的牵引变流器接收到电流上升指令启动，供电电流上升，且在列车开始进入第n+1个长定子段时，第n+1个长定子段连接的牵引变流器的供电电流达到所述匀速电流预设值。这样，使得列车在第n个长定子段的预设启动位置之后到在列车开始进入第n+1个长定子段这个时间段，列车牵引力是第n个长定子段和第n+1个长定子段提供的牵引力叠加提供的，列车牵引力的变化较小。That is, when the leading car of the train approaches the position near the tail of the n-th long stator segment and is about to enter the n+1-th long stator segment, the n-th long stator segment continues to supply power according to the preset value of constant-speed current, and at this time, The traction converter connected to the n+1th long stator section receives the current increase command to start, and the power supply current rises. When the train starts to enter the n+1th long stator section, the n+1th long stator section is connected to the The power supply current of the traction converter reaches the preset value of the constant speed current. In this way, the train’s tractive force is the nth long stator section and the n+1th long stator section after the train starts from the preset starting position of the nth long stator section to the time when the train starts to enter the n+1th long stator section. The traction force provided by the stator section is superimposed, and the train traction force changes little.
具体的，在列车开始进入第n+1个长定子段时：Specifically, when the train starts to enter the n+1th long stator segment:
所述分区牵引控制单元向第n个长定子段对应连接的变流器控制单元发送电流下降指令，且第n个长定子段连接的牵引变流器接收到电流下降指令后，供电电流下降，且在列车完全进入第n+1个长定子段时，第n个长定子段连接的牵引变流器的供电电流下降至零；The partitioned traction control unit sends a current drop instruction to the converter control unit connected to the n-th long stator segment, and after the traction converter connected to the n-th long stator segment receives the current drop instruction, the power supply current drops, And when the train completely enters the n+1 long stator section, the power supply current of the traction converter connected to the n long stator section drops to zero;
第n+1个长定子段保持按照所述匀速电流预设值供电；The (n+1)th long stator segment maintains the power supply according to the preset value of the constant-speed current;
其中，所述供电电流控制指令包括电流下降指令。Wherein, the power supply current control command includes a current drop command.
这样，使得列车开始进入第n+1个长定子段之时到在列车完全进入第n+1个长定子段之前的这个时间段，列车牵引力是第n个长定子段和第n+1个长定子段提供的牵引力叠加提供的，列车牵引力的变化较小。In this way, when the train starts to enter the n+1th long stator section to the time period before the train completely enters the n+1th long stator section, the traction force of the train is the nth long stator section and the n+1th long stator section. The traction provided by the long stator section is superimposed, and the change of the traction of the train is small.
进一步的，所述分区牵引控制单元和所述变流器控制单元对所述牵引变流器的供电电流进行闭环控制。Further, the zoned traction control unit and the converter control unit perform closed-loop control on the power supply current of the traction converter.
为了实现闭环控制，需要为每个牵引变流器设置电流传感器，将根据电流传感器的电流值输入到所述分区牵引控制单元，以调整电流上升指令和电流下 降指令中电流的数值。In order to achieve closed-loop control, a current sensor needs to be provided for each traction converter, and the current value according to the current sensor is input to the zonal traction control unit to adjust the current value in the current rising command and the current falling command.
实施中，所述长定子段的长度大于所述列车的长度。In practice, the length of the long stator segment is greater than the length of the train.
这样，当列车仅在一个长定子段范围内行驶时，只需要将对这个长定子段进行供电即可；当列车经过两个相邻的长定子段的相邻的位置时，只需要对着两个长定子段进行供电，是牵引供电区间配置两个牵引供电***进行供电的较佳的实施方式。In this way, when the train only travels within the range of one long stator section, it is only necessary to supply power to this long stator section; when the train passes through the adjacent positions of two adjacent long stator sections, it only needs to face Two long stator sections for power supply are a preferred embodiment for configuring two traction power supply systems for power supply in the traction power supply section.
实施中，如图1所示，所述牵引供电***还包括：In implementation, as shown in Figure 1, the traction power supply system further includes:
自所述牵引逆变器向外部电网接口顺次串联的牵引整流单元250和供电设备260；The traction rectifier unit 250 and the power supply device 260 are sequentially connected in series from the traction inverter to the external grid interface;
其中，所述供电设备260用于将外部电网接口接入的交流高压电进行降压形成低压交流电；所述牵引整流单元250用于将接入的低压交流电形成低压直流电，提供给所述牵引变流器210。Wherein, the power supply equipment 260 is used to step down the AC high voltage power connected to the external power grid interface to form low voltage AC power; the traction rectifier unit 250 is used to convert the connected low voltage AC power into low voltage DC power, which is provided to the traction Converter 210.
牵引整流单元和供电设备实现了将外部电网接入的交流高压电进行降压整流形成低压交流电，提供给牵引变流器。The traction rectifier unit and the power supply equipment realize the step-down rectification of the high-voltage alternating current connected to the external power grid to form low-voltage alternating current, which is provided to the traction converter.
实施中，如图1所示，所述牵引控制***还包括供电控制单元270；In implementation, as shown in FIG. 1, the traction control system further includes a power supply control unit 270;
所述供电设备260包括串联的输入开关柜261和牵引变压器262；The power supply equipment 260 includes an input switch cabinet 261 and a traction transformer 262 connected in series;
所述供电控制单元270用于控制所述输入开关柜261的总开关，对供电设备260是否供电进行控制。The power supply control unit 270 is used to control the main switch of the input switch cabinet 261 to control whether the power supply device 260 supplies power.
供电控制单元实现了对供电设备是否供电的控制。The power supply control unit realizes the control of whether the power supply device supplies power.
实施中，如图1所示，所述牵引供电***还包括串联的制动斩波器281和制动电阻282，与所述牵引整流单元250形成回路；In implementation, as shown in FIG. 1, the traction power supply system further includes a brake chopper 281 and a brake resistor 282 connected in series to form a loop with the traction rectifier unit 250;
所述供电控制单元270还用于在供电设备26供电的情况下，在列车进行电制动时接入所述制动电阻282进行制动，在列车牵引时断开所述制动电阻282。The power supply control unit 270 is also used to connect the braking resistor 282 to perform braking when the train is electrically braking when the power supply device 26 supplies power, and disconnect the braking resistor 282 when the train is towed.
这样，在供电设备进行供电的情况下，在列车进行电制动时接入所述制动电阻进行制动，此时牵引变流器不能进行供电，在列车进行牵引时断开制动电阻，此时，牵引变流器能够进行供电。In this way, when the power supply equipment is supplying power, the braking resistor is connected for braking when the train is electrically braking. At this time, the traction converter cannot supply power, and the braking resistor is disconnected when the train is traction. At this time, the traction converter can supply power.
具体的，如图1所示，所述牵引供电***在牵引变电站内。Specifically, as shown in Fig. 1, the traction power supply system is in a traction substation.
具体的，每个牵引变流器容量为4兆瓦(MVA)。Specifically, each traction converter has a capacity of 4 megawatts (MVA).
牵引变流器技术参数如下表1：The technical parameters of the traction converter are as follows:
表1Table 1
Figure PCTCN2020085808-appb-000001
Figure PCTCN2020085808-appb-000001
在本申请及其实施例的描述中，需要理解的是，术语“顶”、“底”、“高度”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方 位、以特定的方位构造和操作，因此不能理解为对本申请的限制。In the description of this application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the drawings, and is only for It is convenient to describe the application and simplify the description, instead of indicating or implying that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.
在本申请及其实施例中，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接，还可以是通信；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。In this application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, they can be fixed. The connection can also be detachable or integrated; it can be mechanical, electrical, or communication; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. Or the interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.
在本申请及其实施例中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度小于第二特征。In the present application and its embodiments, unless expressly stipulated and defined otherwise, the "on" or "under" of the first feature of the second feature may include direct contact between the first feature and the second feature, or include the first feature. The second feature is not in direct contact but through another feature between them. Moreover, the "above", "above" and "above" of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature. The “below”, “below” and “below” of the first feature of the second feature include the first feature directly above and diagonally above the second feature, or it simply means that the level of the first feature is smaller than the second feature.
上文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，上文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。The above disclosure provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are only examples, and are not intended to limit the application. In addition, the present application may repeat reference numerals and/or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.
尽管已描述了本申请一些可选的实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括一些可选的实施例以及落入本申请范围的所有变更和修改。Although some optional embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including some optional embodiments and all changes and modifications falling within the scope of the present application.
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申 请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, then this application is also intended to include these modifications and variations.

Claims (13)

  1. 一种磁悬浮列车的牵引***，其特征在于，包括：A traction system of a maglev train, which is characterized in that it comprises:
    直线同步电机，所述直线同步电机的次级设置在列车转向架的中部；所述直线同步电机的长定子沿轨道铺设在两条轨条之间，所述长定子由多个顺次间隔设置的长定子段形成；各个所述长定子段形成至少一个牵引供电区间，所述牵引供电区间包括至少两个长定子段；Linear synchronous motor, the secondary of the linear synchronous motor is arranged in the middle of the train bogie; the long stator of the linear synchronous motor is laid between the two rails along the track, and the long stator is arranged at intervals in sequence. Each of the long stator segments forms at least one traction power supply section, and the traction power supply section includes at least two long stator sections;
    牵引供电***，每个所述牵引供电区间配置一个所述牵引供电***，用于沿所述列车的前进方向交替为牵引供电区间内的各个长定子段供电；A traction power supply system, each of the traction power supply sections is configured with one traction power supply system for alternately supplying power to each long stator section in the traction power supply section along the forward direction of the train;
    其中，所述长定子段被供电时能与所述直线同步电机的次级发生作用力产生列车牵引力，驱动磁悬浮列车前进。Wherein, when the long stator section is powered, it can generate a force with the secondary of the linear synchronous motor to generate train traction, and drive the maglev train to move forward.
  2. 根据权利要求1所述的牵引***，其特征在于，所述牵引供电***具体用于在列车通过同一牵引供电区间内交替供电的两个长定子段的过程中，列车牵引力的实际值与匀速牵引力预设值的实际偏差率不超过预设范围；The traction system according to claim 1, wherein the traction power supply system is specifically used for the actual value of the train traction force and the constant speed traction force when the train passes through two long stator segments that are alternately powered in the same traction power supply section. The actual deviation rate of the preset value does not exceed the preset range;
    其中，所述匀速牵引力预设值是列车保持匀速所需的牵引力预设值。Wherein, the preset value of the constant speed traction force is the preset value of the traction force required by the train to maintain a constant speed.
  3. 根据权利要求2所述的牵引***，其特征在于，所述牵引供电***包括：The traction system according to claim 2, wherein the traction power supply system comprises:
    两个牵引变流器；Two traction converters;
    与所述长定子段一一对应连接的变流器控制开关，各个所述变流器控制开关交替与两个所述牵引变流器连接；Converter control switches connected to the long stator section in a one-to-one correspondence, each of the converter control switches is alternately connected to the two traction converters;
    其中，所述变流器控制开关用于控制所述变流器控制开关所连接的长定子段和牵引变流器是否形成电路通路。Wherein, the converter control switch is used to control whether the long stator section connected to the converter control switch and the traction converter form a circuit path.
  4. 根据权利要求3所述的牵引***，其特征在于，所述牵引供电***还包括：The traction system according to claim 3, wherein the traction power supply system further comprises:
    分区牵引控制单元，与各个所述变流器控制开关通信连接；The zone traction control unit is in communication connection with each of the converter control switches;
    其中，所述分区牵引控制单元用于负责接收列车控制***发出的控制指令，并根据控制指令控制所述变流器控制开关的接通和断开。Wherein, the zonal traction control unit is used for receiving control instructions issued by the train control system, and controlling the on and off of the converter control switch according to the control instructions.
  5. 根据权利要求4所述的牵引***，其特征在于，所述牵引供电***还包括：The traction system according to claim 4, wherein the traction power supply system further comprises:
    与所述牵引变流器一一对应通信连接的变流器控制单元；A converter control unit connected in one-to-one correspondence with the traction converter;
    其中，所述分区牵引控制单元还用于向所述变流器控制单元发送供电电流控制指令；所述变流器控制单元用于在长定子段对应的变流器控制开关的接通的情况下，根据供电电流控制指令控制所述牵引变流器输出的电流，作为所述长定子段的供电电流。Wherein, the zonal traction control unit is also used to send a power supply current control instruction to the converter control unit; the converter control unit is used to control the switching of the converter corresponding to the long stator section Next, the current output by the traction converter is controlled according to the power supply current control command as the power supply current of the long stator section.
  6. 根据权利要求5所述的牵引***，其特征在于，在列车达到第n个长定子段的预设启动位置时：The traction system according to claim 5, characterized in that, when the train reaches the preset starting position of the n-th long stator segment:
    第n个长定子段保持按照匀速电流预设值供电，第n个长定子段为列车当前所在的长定子段，n是大于等于1的正整数；The n-th long stator section maintains the power supply according to the preset value of constant-speed current, the n-th long stator section is the long stator section where the train is currently located, and n is a positive integer greater than or equal to 1;
    所述分区牵引控制单元接通第n+1个长定子段连接的变流器控制开关，并向第n+1个长定子段对应连接的变流器控制单元发送电流上升指令；第n+1个长定子段连接的牵引变流器接收到电流上升指令启动，供电电流上升，且在列车开始进入第n+1个长定子段时，第n+1个长定子段连接的牵引变流器的供电电流达到所述匀速电流预设值；The zonal traction control unit turns on the converter control switch connected to the n+1th long stator section, and sends a current increase command to the converter control unit connected to the n+1th long stator section; The traction converter connected to a long stator section receives the current increase command to start, the power supply current rises, and when the train starts to enter the n+1th long stator section, the traction converter connected to the n+1th long stator section The power supply current of the device reaches the preset value of the constant speed current;
    其中，所述预设启动位置设置在当前长定子段中靠近尾部的位置，所述匀速电流预设值是所述匀速牵引力预设值对应的电流值，所述供电电流控制指令包括电流上升指令。Wherein, the preset starting position is set at a position close to the tail of the current long stator segment, the constant-speed current preset value is the current value corresponding to the constant-speed traction force preset value, and the power supply current control command includes a current increase command .
  7. 根据权利要求6所述的牵引***，其特征在于，在列车开始进入第n+1个长定子段时：The traction system according to claim 6, characterized in that, when the train starts to enter the n+1th long stator section:
    所述分区牵引控制单元向第n个长定子段对应连接的变流器控制单元发送电流下降指令，且第n个长定子段连接的牵引变流器接收到电流下降指令后，供电电流下降，且在列车完全进入第n+1个长定子段时，第n个长定子段连接的牵引变流器的供电电流下降至零；The partitioned traction control unit sends a current drop instruction to the converter control unit connected to the n-th long stator segment, and after the traction converter connected to the n-th long stator segment receives the current drop instruction, the power supply current drops, And when the train completely enters the n+1 long stator section, the power supply current of the traction converter connected to the n long stator section drops to zero;
    第n+1个长定子段保持按照所述匀速电流预设值供电；The (n+1)th long stator segment maintains the power supply according to the preset value of the constant-speed current;
    其中，所述供电电流控制指令包括电流下降指令。Wherein, the power supply current control command includes a current drop command.
  8. 根据权利要求7所述的牵引***，其特征在于，所述分区牵引控制单元和所述变流器控制单元对所述牵引变流器的供电电流进行闭环控制。The traction system according to claim 7, wherein the zone traction control unit and the converter control unit perform closed-loop control of the power supply current of the traction converter.
  9. 根据权利要求8所述的牵引***，其特征在于，所述长定子段的长度大于所述列车的长度。The traction system according to claim 8, wherein the length of the long stator section is greater than the length of the train.
  10. 根据权利要求9所述的牵引***，其特征在于，所述牵引供电***还包括：The traction system according to claim 9, wherein the traction power supply system further comprises:
    自所述牵引逆变器向外部电网接口顺次串联的牵引整流单元和供电设备；The traction rectifier unit and the power supply equipment connected in series from the traction inverter to the external power grid interface;
    其中，所述供电设备用于将外部电网接口接入的交流高压电进行降压形成低压交流电；所述牵引整流单元用于将接入的低压交流电形成低压直流电，提供给所述牵引变流器。Wherein, the power supply equipment is used to step-down the AC high-voltage power connected to the external power grid interface to form low-voltage AC power; the traction rectifier unit is used to convert the connected low-voltage AC power into low-voltage DC power, which is provided to the traction converter Device.
  11. 根据权利要求10所述的牵引***，其特征在于，所述牵引供电***还包括供电控制单元；The traction system according to claim 10, wherein the traction power supply system further comprises a power supply control unit;
    所述供电设备包括串联的输入开关柜和牵引变压器；The power supply equipment includes an input switch cabinet and a traction transformer connected in series;
    所述供电控制单元用于控制所述输入开关柜的总开关，对所述供电设备是否供电进行控制。The power supply control unit is used to control the main switch of the input switch cabinet to control whether the power supply device supplies power.
  12. 根据权利要求11所述的牵引***，其特征在于，所述牵引供电***还包括串联的制动斩波器和制动电阻，与所述牵引整流单元形成回路；The traction system according to claim 11, wherein the traction power supply system further comprises a brake chopper and a brake resistor connected in series to form a loop with the traction rectifier unit;
    所述供电控制单元还用于在供电设备供电的情况下，在列车进行电制动时接入所述制动电阻进行制动，在列车牵引时断开所述制动电阻。The power supply control unit is also used to connect the braking resistor to perform braking when the train is electrically braking, and disconnect the braking resistor when the train is towed.
  13. 一种轨道列车，其特征在于，包括权利要求1至12中任一所述的牵引***。A rail train, characterized by comprising the traction system according to any one of claims 1-12.
PCT/CN2020/085808 2020-03-24 2020-04-21 Traction system for magnetic levitation train, and rail train WO2021189572A1 (en)

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