Patent ID: 6853159
Filing Date: 2005-02-08
Classification: B62D,H02P

Abstract:
1. Torque generating apparatus comprising: (a) a DC power source of voltage Vs; (b) a DC/DC converter connected to said DC power source and adapted to convert DC power at said voltage Vs to DC power at an alternate voltage Va; (c) a brushless DC motor design optimized for operation at said voltage Vs, said brushless DC motor being responsive power at said voltage Vs by achieving speed/torque combinations falling on a speed/torque profile defining optimal operation of said brushless DC motor, said brushless DC motor being further adapted to achieve speed/torque combinations not falling on said speed/torque profile by operating at said alternate voltage Va, and (d) a switch adapted to put said brushless DC motor selectively into communication with either said DC power source or said DC/DC converter.