Kiyoshi SATO, Koichi MATSUOKA, Yukie OGATA,
Tadashi HATA, Shinya SATO
In the conventional traction motor drive system of commuter electric vehicles, the torque of traction motor is transmitted to the wheel-set via the flexible coupling and a reduction gear system. As a drive system for the next-generation commuter trains, we have been promoting research and development on a direct drive traction motor system without the conventional driving gear. We manufactured three types of experimental traction motors and tested on the JR EAST Yokosuka Line. This report introduces on-board and wayside noise measurements results of the test vehicle.