基于模糊自适应转速调节器的绕组切换型电机控制

Widening high-efficient range is difficult for conventional vehicle electric drive systems. For this problem, this paper studied a switching topology for dual-winding switching PMSM with wide speed-range and high-efficiency, in which the windings are in series at low speed and in parallel at high speed. On the basis of the topology, a fuzzy logic-based speed-adaptive control strategy was proposed to reduce the speed fluctuation during switching process between series and parallel mode, where the parameters of stator winding mutate. Then, the adaptive-fuzzy principle in speed regulator was presented according to the fuzzy-control theory for special conditions, including series mode, parallel mode, and the switching process. Besides, this method involved the fully off state of the inverter switches into the rules of circuit switching. Finally, the effectiveness of the studied fuzzy logic-based speed-adaptive control strategy was experimentally verified by a 15kW dual-winding switching motor platform. The experimental results prove that the studied algorithm achieves the smooth switching process and the high-dynamic performance simultaneously.