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Modeling and Control Techniques for Motor Drives

D06.7 - Suppression of Cross-Coupling Effects on Current Control in Wound Field Synchoronous Motor Drives

Thursday, March 26, 2026
12:00 PM - 1:45 PM CT
Location: Hemisfair Ballroom
This paper introduces a current controller strategy for wound field synchronous motors (WFSMs). Conventional approaches typically regard the field-axis (f-axis) current as an independent input, neglecting its dynamic coupling with the dq axes components. A complete dqf motor model is established by including all mutual inductances, based on which a multivariable controller is derived. The controller ensures fully decoupled current dynamics and stable operation under load variations, with independent loop gains designed as low-pass filters and coupling control gains suppressed. By eliminating cross-axis interference, the proposed method achieves robust performance. Experimental results verify its effectiveness, demonstrating improved transient response compared with conventional control method.