Methods, systems and apparatus for generating voltage command signals for controlling operation of an electric machine

摘要

Embodiments of the present disclosure relate to methods, systems and apparatus for generating voltage command signals for controlling operation of an electric machine. The disclosed embodiments can reduce current and torque oscillation, which can in turn improve machine efficiency and performance, as well as utilization of the DC voltage source.

主权项

1. A method for generating voltage command signals for controlling an electric machine, the method comprising:
outputting, from a voltage command modification module, a plurality of different voltage command signals that comprise:
presently computed voltage command signals when a transient stator voltage satisfies at least two conditions;modified voltage command signals when a timer value of a timer is determined to be less than or equal Co a first timer value, wherein the modified voltage command signals are computed based on held versions of the presently computed voltage command signals and previously computed voltage command signals; andthe held versions of the presently computed voltage command signals when the timer value of the timer is determined to be greater than or equal to the first timer value and is less than a second timer value.