Abstract
Interior Permanent Magnet Synchronous Motor (IPMSM) has been extensive applied in many fields, such as electric vehicles, servo motor drives and aerospace because of its intense power density, high efficiency and wide speed range. For IPMSM speed control system, a flux-weakening control method and a sliding mode variable structure controller are designed to improve the flux-weakening performance of IPMSM. The low speed and high speed control strategies of IPMSM are studied by combining the maximum torque current ratio control method. In this paper, a fuzzy sliding mode controller is proposed and designed for the flux-weakening speed regulation system of IPMSM. Based on the fuzzy reasoning method, the coefficient before the symbol function in the sliding mode controller switching variables is adjusted online, so as to effectively enhance the anti-load perturbation ability of the system without aggravating the sliding mode chattering. The simulation results show that compared with the sliding mode control strategy, the proposed fuzzy sliding mode control strategy can significantly improve the ability of the system to resist load disturbances, and the system can obtain excellent dynamic and static performance.
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