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Energies 2017, 10(12), 2002; doi:10.3390/en10122002

Phase-Inductance-Based Position Estimation Method for Interior Permanent Magnet Synchronous Motors

1
School of Electrical and Automation Engineering, Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing, Nanjing Normal University, Nanjing 210023, China
2
School of Mechanical and Electrical Engineering, Nantong Institute of Technology, Nantong 226002, China
*
Author to whom correspondence should be addressed.
Received: 3 November 2017 / Revised: 23 November 2017 / Accepted: 24 November 2017 / Published: 1 December 2017
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

This paper presents a phase-inductance-based position estimation method for interior permanent magnet synchronous motors (IPMSMs). According to the characteristics of phase induction of IPMSMs, the corresponding relationship of the rotor position and the phase inductance is obtained. In order to eliminate the effect of the zero-sequence component of phase inductance and reduce the rotor position estimation error, the phase inductance difference is employed. With the iterative computation of inductance vectors, the position plane is further subdivided, and the rotor position is extracted by comparing the amplitudes of inductance vectors. To decrease the consumption of computer resources and increase the practicability, a simplified implementation is also investigated. In this method, the rotor position information is achieved easily, with several basic math operations and logical comparisons of phase inductances, without any coordinate transformation or trigonometric function calculation. Based on this position estimation method, the field orientated control (FOC) strategy is established, and the detailed implementation is also provided. A series of experiment results from a prototype demonstrate the correctness and feasibility of the proposed method. View Full-Text
Keywords: interior permanent magnet synchronous motor; phase inductance; rotor position estimation; inductance vector interior permanent magnet synchronous motor; phase inductance; rotor position estimation; inductance vector
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Qiu, X.; Wang, W.; Yang, J.; Jiang, J.; Yang, J. Phase-Inductance-Based Position Estimation Method for Interior Permanent Magnet Synchronous Motors. Energies 2017, 10, 2002.

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