DC700V circuit topological structure of high-speed train emergency self-walking system
A circuit topology and high-speed train technology, applied in current collectors, motor vehicles, electric vehicles, etc., can solve the problems of large transmission loss, low system efficiency, large volume and weight, etc., to improve work performance, control strategy optimization, Effect of reducing volume and weight
Inactive Publication Date: 2021-01-22
SOUTHWEST JIAOTONG UNIV
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[0005] Aiming at the problems of large volume and weight, large transmission loss and low system efficiency in the existing emergency self-propelled system, the present invention provides a DC700V circuit topology of the emergency self-propelled system for high-speed trains to reduce transmission loss and improve System work efficiency
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[0034]The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0035] Such as figure 1 As shown, the embodiment of the present invention provides a DC700V circuit topology of a high-speed train emergency self-propelled system, including a main traction inverter, a traction motor, a medium-high frequency auxiliary converter, a bidirectional charger, a power battery, a bidirectional direct- Straight converter and storage battery;
[0036] The input ends of the main traction inverter and ...
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The invention discloses a DC700V circuit topological structure of a high-speed train emergency self-walking system. The DC700V circuit topological structure comprises a main traction inverter, a traction motor, a medium-high frequency auxiliary converter, a bidirectional charger, a power battery, a bidirectional DC-DC converter and a storage battery, and is characterized in that the medium-high frequency auxiliary converter adopts a DC-AC circuit topological structure characterized by firstly reducing voltage and then inverting; and the bidirectional charger adopts a multi-module cascade topological structure. According to the invention, the medium-high frequency auxiliary converter is adopted to replace a traditional auxiliary converter and a power frequency isolation transformer, and thebidirectional DC-DC converter is adopted to replace a two-stage topological structure of a front-stage rectifier and a rear-stage DC-DC converter in an original charger, so that the size and the weight of the emergency self-walking system can be effectively reduced; and the energy density and the working efficiency of the system are improved.
Description
technical field [0001] The invention relates to the technical field of topology of an emergency self-propelled system, in particular to a DC700V circuit topology of an emergency self-propelled system for a high-speed train. Background technique [0002] In recent years, China's rail transit industry has developed rapidly, but there are still many safety and reliability problems in the development process, such as: when the traction power supply system stops supplying power to high-speed trains due to failure of the traction network or other factors, if the power supply cannot be restored in time , Not only will it cause the entire line to be out of service, but it may also seriously affect the normal travel of passengers and the safety of life and property. Therefore, the emergency self-propelled system of high-speed trains plays a very important role and significance for the normal operation of rail transit. [0003] In the existing emergency self-propelled system, a two-w...
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IPC IPC(8): B60L50/60B60L50/53B60L1/00
CPCB60L1/00B60L2200/26B60L50/53B60L50/60Y02T10/70Y02T10/72
Inventor 宋文胜邓亚茹钟鸣尹帅余彬冯晓云王青元
Owner SOUTHWEST JIAOTONG UNIV