Automatic advance angle control algorithm using anti-windup feedback voltage of PI current controller for wide range speed operation of BLDCM

摘要

This paper proposes the automatic advance angle control algorithm that does not use the lookup table and the voltage equation of BLDCM. An advance angle control can obtain the relatively large voltage margin by pulling the conduction angle of the phase current against the back-EMF to expand the speed range of the motor. The conventional paper using the lookup table is difficult to control the speed and produce the torque accurately, because the error of the advance angle occurs when the electrical parameters of the motor are varied by the change of the temperature and the operating conditions. Since the anti-windup output signal of the PI current controller is used as the input signal of the proposed advance angle control algorithm, the proposed algorithm is not only robust against the electrical constant changes of the motor but also excellent in the transient state of the various operating conditions. The proposed algorithm has the additional features that the implementation is simple and the efficient operation is possible in the high speed region. The usefulness of the proposed algorithm is verified through simulation results.