Abstract：Single current regulator flux-weakening control based on the d-q current cross- coupling effect is a novel strategy for PMSM(permanent magnet synchronous motor). This flux- weakening strategy can solve the problem that two current regulators of traditional algorithms conflict with each other in high speed operation region and lead to poor system performance. Q-axis voltage given scheme is a key issue of this method, which influences PMSM’s voltage utilization ratio, efficiency and load capability. Based on voltage equation of PMSM, this paper describes the basic principle of flux-weakening control based on the d-q current cross-coupling effect and presents a modified control method. The disadvantages of existing control methods and the expected results of the proposed control method are analyzed by using stator current trajectory in id-iq coordinate plane. Dynamic control process is analyzed in the range of small signal. The modified control method can adjust q-axis voltage to motor operating condition. It does not depend on motor parameters or look-up table, and is easy to achieve. This method is verified by the results of simulation and experiment.
方晓春,胡太元,林飞,杨中平. 基于交直轴电流耦合的单电流调节器永磁同步电机弱磁控制[J]. 电工技术学报, 2015, 30(2): 140-147.
Fang Xiaochun,Hu Taiyuan,Lin Fei,Yang Zhongping. Single Current Regulator Flux-Weakening Control of PMSM Based on Current Cross-Coupling Effect. Transactions of China Electrotechnical Society, 2015, 30(2): 140-147.
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2015, Vol. 30 
