Bus Current Feedback for Motor Control

摘要

Many algorithms using nonlinear control ideas have been applied to the induction motor control problem to allow the user to control the torque, speed, or position response of a closed loop servo quite precisely. For many applications, the incremental improvement in transient torque, speed, or position response does not justify the additional computational requirements or a complicated tuning and commissioning process. A better solution would be to improve the utility of existing algorithms that may normally exhibit lower performance, but that can be extended easily. One such extension involves the use of the DC link current as a control variable in various motor control algorithms. This work examined the use of such a variable as an enhancement for scalar and vector control algorithms for the induction motor and discussed the effects of such a control on the operation of an electric vehicle.