Electric transmission system of low-floor light rail vehicle

An electric transmission and low-floor technology, which is applied in the field of vehicle electric transmission system, can solve the problems that the electric transmission system cannot adapt to low-floor light rail cars, etc., and achieve the effect of high reliability, high protection level and powerful functions

Pending Publication Date: 2017-12-19
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problem that the traditional electric transmission system cannot adapt to low-floor light rail cars, and provides an electric transmission system for low-floor light rail cars

Method used

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  • Electric transmission system of low-floor light rail vehicle
  • Electric transmission system of low-floor light rail vehicle
  • Electric transmission system of low-floor light rail vehicle

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Effect test

Embodiment Construction

[0010] The electric drive system of a low-floor light rail vehicle includes a high-voltage box 1, two traction auxiliary converters 2, a braking resistor box 3, a 24V battery 4 and a traction battery 5; the high-voltage box 1 includes a main fuse, an isolation switch, high-speed circuit breaker; traction auxiliary converter 2 includes traction inverter, smoothing reactor, DC24V control power supply, AC400V auxiliary inverter and traction battery charger, of which DC24V control power supply, AC400V auxiliary inverter and traction The transformer included in the battery charger is a high-frequency transformer; the high-voltage box 1, the traction auxiliary converter 2 and the braking resistor box 3 are box-type designs with a height not exceeding 530mm; the high-voltage box 1 is set in the middle of the roof, and the two The traction auxiliary converter 2 is placed at both ends of the roof, the 24V battery 4 and the traction battery 5 are placed at both ends of the roof, and the ...

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PUM

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Abstract

The invention relates to electric transmission systems of vehicles, in particular to an electric transmission system of a low-floor light rail vehicle. The problem that a traditional electric transmission system cannot adapt to a low-floor light rail vehicle is solved. The electric transmission system of the low-floor light rail vehicle electric comprises a high-voltage box, two traction auxiliary converters, a brake resistor box, a 24V storage battery and a traction storage battery. The high-voltage box comprises a main fuse, an isolating switch and a high-speed circuit breaker. Each traction auxiliary converter comprises a traction inverter, a smoothing reactor, a DC24V control power supply, an AC400V auxiliary inverter and a traction storage battery charger, wherein transformers included in the DC24V control power supply, the AC400V auxiliary inverter and the traction storage battery charger are high-frequency transformers. The high-voltage box, the traction auxiliary converters and the brake resistor box are all of box-type design with the height being no more than 530 mm. The electric transmission system has the characteristics of being high in integration degree, small in size, high in reliability, good in seismic resistance, high in protection grade, powerful in function and the like.

Description

technical field [0001] The invention relates to an electric transmission system of a vehicle, in particular to an electric transmission system of a low-floor light rail car. Background technique [0002] In order to properly solve the pollution problems, traffic jams and energy consumption problems caused by the current city cars, low-floor light rail cars besides the subway have a very good development prospect. However, in order to achieve a low floor and facilitate passengers to get on and off the car, the components of the electric drive system of the vehicle can only be installed on the roof, which brings about the problem of isolating switch boxes and fuse boxes of traditional electric drive systems (such as subway electric drive systems) , high-speed circuit breaker box, smoothing reactor box, traction inverter, DC24V control power supply, AC400V auxiliary inverter, and braking resistor box cannot be installed in the limited space on the roof. Therefore, the electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18B61C3/02
CPCB61C3/02B60L50/53B60L2200/26Y02T10/72Y02T10/70
Inventor 刘荣强夏建民张利娟胡肖飞李宝恩刘荣周国卷梁永瑞盛怡
Owner CRRC YONGJI ELECTRIC CO LTD
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