Patent ID: 6157148
Filing Date: 2000-12-05
Classification: B60L,Y02T

Abstract:
A contactorless multi-motor control system for a battery powered vehicle comprising:a DC auxiliary motor having first and second terminals;a contactorless auxiliary motor controller having first and second connecting terminals, which are connected electrically to said first and second terminals of said auxiliary motor;a series wound DC traction motor in electrical communication with said auxiliary motor having four terminals including first and second field terminals and first and second armature terminals, said first armature terminal having first and second choppers electrically connected therewith, and said second armature terminal having first and second thyristors electrically connected therewith, wherein activation of said first chopper and said second thyristor causes a forward current flow between said first and second armature terminals, and activation of said second chopper and said first thyristor causes a reverse current flow between said first and second armature terminals; anda contactorless, bidirectional current controller coupled to said traction motor.