Abstract：The magnetic circuit in the motor is saturated easily when the load current increases and thus the motor flux can not be accurately identified by traditional linear current model. Therefore, salient pole synchronous motor flux observer model must consider the saturation effect. Because of rotor structural asymmetry in saliency synchronous motors, d axis saturation curve, which obtained by experiment, can not be fully expressed saturation effect of the motor. In this paper, using the q axis conversion ideas, the salient pole motor is converted into a non-salient pole motor. Furthermore, static saturation inductance, dynamic saturation inductance and cross saturation inductance are introduced to represent saturation characteristics. On this basis, a hybrid air gap flux estimator, which considering the magnetic saturation effected, and its vector control strategy are proposed. Both the simulation and experimental results demonstrate that the proposed dc excited salient pole synchronous motor vector control system has excellent control property, and it has pretty high value in theories and applications.
吴轩钦, 谭国俊, 叶宗彬, 景巍. 直流励磁凸极同步电机饱和分析及其矢量控制[J]. 电工技术学报, 2011, 26(8): 151-158.
Wu Xuanqin, Tan Guojun, Ye Zongbin, Jing Wei. DC-Excited Salient-Pole Synchronous Motor Saturation Analysis and Its Vector Control. Transactions of China Electrotechnical Society, 2011, 26(8): 151-158.
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2011, Vol. 26 
