High Efficiency All-Electric Vehicle Propulsion System

摘要

An all-electric vehicle propulsion system using a readily available high frequency AC Motor such as a 3-phase 400 Hz motor. A step-down gearbox increases torque and power thus decreasing the need for a high-power motor. Also, with the controllers of the invention, readily available, inexpensive batteries can be used as a primary source of energy. An efficient C&A-DC/DC step-up converter to power a high-efficiency motor driver can force the AC-motor windings circulate current in a resonance mode at around 220 volts. While 400 Hz and 220 volts are preferred, any voltage or frequency may be used, as well as any number of phases. Vehicle speed and torque can controlled by changing frequency and voltage applied to the motor usually using a variable resistor.