A Novel Voltage Injection Based Offline Parameters Identification for Current Controller Auto Tuning in SPMSM Drives

Jiang Long, Ming Yang, Yangyang Chen, Dianguo Xu and Frede Blaabjerg
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Jiang Long: Institute of Power Electronics and Electrical Drives, Harbin Institute of Technology, Harbin 150001, China
Ming Yang: Institute of Power Electronics and Electrical Drives, Harbin Institute of Technology, Harbin 150001, China
Yangyang Chen: Institute of Power Electronics and Electrical Drives, Harbin Institute of Technology, Harbin 150001, China
Dianguo Xu: Institute of Power Electronics and Electrical Drives, Harbin Institute of Technology, Harbin 150001, China
Frede Blaabjerg: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark

Energies, 2020, vol. 13, issue 11, 1-21

Abstract: This paper presents a comprehensive study on a novel voltage injection based offline parameter identification method for surface mounted permanent magnet synchronous motors (SPMSMs). It gives solutions to obtain stator resistance, d - and q -axes inductances, and permanent magnet (PM) flux linkage that are totally independent of current and speed controllers, and it is able to track variations in q -axis inductance caused by magnetic saturation. With the proposed voltage amplitude selection strategies, a closed-loop-like current and speed control is achieved throughout the identification process. It provides a marked difference compared with the existing methods that are based on open-loop voltage injection and renders a more simplified and industry-friendly solution compared with methods that rely on controllers. Inverter nonlinearity effect compensation is not required because its voltage error is removed by enabling the motor to function at a designed routine. The proposed method is validated through two SPMSMs with different power rates. It shows that the required parameters can be accurately identified and the proportional-integral current controller auto-tuning is achieved only with very limited motor data such as rated current and number of pole pairs.

Keywords: PMSM drives; parameter identification; auto-tuning; current controller (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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