SYSTEMS AND METHODS FOR CONTROLLING HIGH SPEED MOTOR

摘要

A method 100 for controlling an electric motor 201 includes inputting a quadrature-axis current (I q ) and a direct-axis current (I d ) into an electric motor 201, receiving speed feedback indicative of the speed of the electric motor, determining whether the speed of the electric motor 201 increases given the input I q , and controlling the I d to increase the speed of the electric motor 201 by selectively weakening the electromagnetic field if the speed of the electric motor 201 does not increase given the input Iq.