Electric transmission system of low-floor light rail vehicle

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...

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

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