Voltage Control Strategy for Maximum Torque Operation of Stator-Flux-Oriented Induction Machine Drive in the Field-Weakening Region

약계자 영역에서 유도 전동기의 고정자 자속 기준 최대 토크 운전을 위한 전압 제어 기법

In this paper, voltage control strategy for maximum torque operation of stator flux-oriented induction machine drive in the field-weakening region is proposed. In a conventional stator flux-oriented (SFO) induction machine drive system of the maximum torque capability cannot be obtained. The field-weakening method is used to vary the stator-flux reference in proportion to the inverse of the rotor speed. The proposed algorithm, based on the voltage control strategy, ensures the maximum torque operation over the field-weakening region. The proposed algorithm, voltage control strategy for maximum torque operation of capability, which is insensitive to the variation of machine parameters In the field-weakening region. The proposed algorithm is verified by simulation.