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Localization example of subway traction inverter DCU module

Date: 2016-11-11
The most powerful countries in the field of metro vehicle core control components technology are Germany, France, Canada, Japan, etc. Three major multinational companies such as Bombardier, Siemens and Alstom have more than 50% of the global market. Domestic CRRC Group and other units authorized the production of core control components of foreign companies in the form of joint ventures, but the core technology has not yet been mastered.

Traction inverter is one of them. Based on its strong R & D capabilities, Xinxin Technology has domestically produced its core component traction inverter DCU module. Its basic functions are as follows:


A vehicle of a certain subway company is equipped with one traction inverter per vehicle, which powers four parallel asynchronous traction motors. Each traction inverter is controlled by a 32-bit microcontroller (MCU), using IGBT components and modular design, PWM drive, monitoring and protecting the temperature of the brake chopper IGBT, and traction inverter according to the feedback signal Calculation of the thermal stress, traction and electric braking force of the device, PID optimal closed-loop control, to ensure the optimal use efficiency of the motor. Our company undertakes the repair of this plate and the research and development of domestically produced independent intellectual property rights spare parts products. At present, the DCU plate produced nationwide has passed the ground bench test of a subway company and is undergoing the test of a sports car on the line. The performance reaches the prototype The degree of replacement of the pieces.
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