Initial Rotor Position and Magnetic Polarity Identification of PM Synchronous Machine Based on Nonlinear Machine Model and Finite Element Analysis

• Published in: IEEE transactions on magnetics Vol. 46; no. 6; pp. 2016 - 2019
• Main Authors: Wang, Yi, Guo, Ningning, Zhu, Jianguo, Duan, Nana, Wang, Shuhong, Guo, Youguang, Xu, Wei, Li, Yongjian
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Computer simulation; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Finite element magnetic field analysis; Finite element method; Finite element methods; initial rotor position; Magnetic analysis; Magnetism; Materials science; Mathematical analysis; Mathematical models; nonlinear magnetic model; Nonlinearity; Numerical models; Numerical simulation; Other topics in materials science; permanent magnet (PM) machine; Permanent magnet motors; Permanent magnets; Physics; Polarity; Rotors; Saturation magnetization; Synchronous machines; Synchronous motors; Testing; Vibration; Voltage; Rotors; Magnetic field effects; initial rotor position; Permanent magnets; nonlinear magnetic model; Powder metallurgy; Finite element method; permanent magnet (PM) machine; Finite element magnetic field analysis; Modelling; Magnetic fields; Synchronous machines; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2010.2042690

In this paper, a DC voltage pulse injection based method is proposed to detect the initial position and rotor polarity of permanent magnet synchronous motor (PMSM). The rotor angle vibration is expressed analytically as a function of the injected pulse. The nonlinear numerical simulation model of PMSM is employed, in which the saturation saliency is incorporated as well as the structural saliency. The proposed scheme is simulated and verified by using the nonlinear model and a 2-D finite element method (FEM) algorithm, respectively. The initial position detection is tested at different starting positions and the results show that the proposed scheme can be used to identify the PMSM initial rotor position.