RTRI REPORT June 1999

The Control System of Permanent Magnet Synchronous Motor for Railway Vehicle Traction

Keiichirou KONDOU, Kouichi MATSUOKA


  We have been studying the application of permanent magnet synchronous motor (PMSM) for railway vehicle traction to reduce the weight and size of direct drive traction motor. As a part of this study, it is essential to establish a drive system of PMSM suitable for railway vehicle traction. In this paper, we discuss the drive system to control PMSM and suggest a current control method which is available under the condition of railway vehicle traction, low switching frequency in a inverter and long digital calculating period. Next we investigate a method to decide the current response time constant Td and reach a conclusion that a value of about 10ms is approprirate under some conditions. Then we check this current control system for railway vehicle traction through experiments and studies of the influence of parameter changes and change line voltages sudden. Consequently, we recognize that the current control system has satisfactory performance for railway vehicle traction.


Copyright (c) 1999 Railway Technical Research Institute