Patent ID: 7965003
Filing Date: 2011-06-21
Classification: B60L,H02K,H02M,H02P,Y02T

Abstract:
1. A motor drive system for a railway vehicle, comprising: a motor to be controlled; a motor shaft fixed to a center of the motor; a motor frame surrounding an outer surface of the motor, and including a plurality of sealed areas therein; an inverter configured to control the motor and that is divided into at least two mechanically separate inverter units, each inverter unit being arranged in a respective of the sealed areas inside of the motor frame; a plurality of cooling fins, each cooling fin being fixed on an outer side of the separated inverter units to face outside; a cooling fan fixed at an end of the motor shaft outside of the motor frame to rotate with the motor shaft; and a cooling air guide arranged at an outside of the motor frame so as to guide a cooling air from the cooling fan along an outer surface of the motor frame to each cooling fin.