Improved Small-Signal Injection-Based Online Multiparameter Identification Method for IPM Machines Considering Cross-Coupling Magnetic Saturation

被引:19
作者
Liu, Zirui [1 ]
Fan, Xinggang [1 ]
Kong, Wubin [1 ]
Cao, Longfei [1 ]
Qu, Ronghai [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China
基金
中国国家自然科学基金;
关键词
Mathematical models; Couplings; Saturation magnetization; Magnetic flux; Impedance; Inductance; Resistance; Cross-coupling magnetic saturation; interior permanent magnet (IPM) machines; online parameter identification; small-signal impedance model; SYNCHRONOUS MOTOR; TORQUE ESTIMATION; FLUX;
D O I
10.1109/TPEL.2022.3192692
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A novel online multiparameter identification method is proposed for interior permanent magnet (IPM) machines considering cross-coupling magnetic saturation. The identification method is based on the combination of small-signal impedance model and fundamental frequency signal model under dq-axes. To analyze the nonlinearity of IPM machines, cross-coupling magnetic saturation effect is introduced into online multiparameter identification for the first time. Based on this model, a phase compensation strategy and orthogonal decomposition in phasor domain is proposed to decouple the complicated mathematical model into four linear equations. By injecting voltage small-signals into dq-axes, multiparameter of IPM machine including adjusted apparent inductance, incremental self-inductance, incremental mutual-inductance can be identified online in a wide operation region. During this process, no additional computing equipment is required. The proposed method is carried out on a tested IPM machine and verified by the finite-element analysis.
引用
收藏
页码:14362 / 14374
页数:13
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