Patent ID: 8962208
Filing Date: 2015-02-24
Classification: H01M,Y02E

Abstract:
1. A method for predictively controlling the speed of a compressor used in conjunction with a fuel cell stack, said method comprising: receiving at a controller data corresponding to fuel cell stack and compressor operating conditions; determining through said controller a future compressor outlet pressure setpoint using a stack operating pressure setpoint, a cathode stoichiometry setpoint and said received data; determining through said controller at least one compressor operating condition at a desired fuel cell stack operating point; determining a feedforward compressor speed through said controller, said feedforward compressor speed based on said determined at least one compressor operating condition in conjunction with compressor operational data; determining a feedback term to eliminate error between the future compressor outlet pressure setpoint and the feedforward compressor speed, the feedback term is calculated using said fuel cell stack operating point and a stack flow feedback; and delivering through said controller a feedforward compressor speed control signal to said compressor to adjust a speed thereof wherein said feedforward compressor speed control signal is the sum of said feedforward compressor speed and said feedback term.