Westinghouse Air Brake Technologies Corporation
ELECTRIC MACHINE CONTROL SYSTEMS AND METHODS

Abstract:

A system and method include monitoring an operating condition of an electric machine that converts rotational movement into an output voltage that is conducted into a circuit coupled with the electric machine, controlling operation of the electric machine using pulse width modulation signals, and changing a magnitude of the output voltage that is conducted into the circuit from the electric machine as a result of the pulse width modulation signals.