Patent ID: 6321145
Filing Date: 2001-11-20
Classification: B60L,Y02T,Y10S

Abstract:
A propulsion control system adapted for use in a fuel cell powered vehicle, said system comprising:a propulsion motor;a fuel cell unit outputting dc electric voltage;a power battery outputting dc power battery voltage;a dc/dc boost converter receiving said dc electric voltage from said fuel cell unit, said dc/dc boost converter outputting boosted dc electric voltage;an inverter receiving said dc power battery voltage from said power battery and said boosted dc electric voltage from said dc/dc boost converter, said inverter outputting ac electric voltage to said propulsion motor;a vehicle controller receiving at least one electrical measurement input from said power battery, said vehicle controller outputting an electrical measurement reference; anda comparing device receiving said electrical measurement reference from said vehicle controller, said comparing device receiving an actual electrical measurement from said fuel cell, said comparing device outputting a signal to said dc/dc boost converter, whereby the power output of said fuel cell remains constant.