Independent Phase Current Reconstruction Strategy for IPMSM Sensorless Control Without Using Null Switching States

Lu, Jiadong, Zhang, Xiaokang, Hu, Yihua ORCID: 0000-0002-1007-1617, Liu, Jinglin, Gan, Chun and Wang, Zheng (2018) Independent Phase Current Reconstruction Strategy for IPMSM Sensorless Control Without Using Null Switching States. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 65 (6). pp. 4492-4502.

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Abstract

This paper proposes a new phase current reconstruction scheme without using null switching states for interior permanent magnet synchronous motor (IPMSM) sensorless control. The phase currents are independently reconstructed and no additional test voltage pulses are required. First, the principle of the basic phase current reconstruction for IPMSM drive system is analyzed in detail. Then, an independent phase current reconstruction scheme without using null switching states is proposed. The current reconstruction dead zone is divided into six sectors, and each sector is split into three parts with corresponding vector synthesis methods. Meanwhile, the null switching states, V000 and V111, are removed from the proposed scheme. In this case, the zero vector is synthesized by the other available vectors. Finally, the reconstructed three-phase currents are utilized for high frequency sine-wave voltage injection-based position estimation. The effectiveness of the proposed scheme is verified by experimental results on a 5 kW IPMSM motor prototype, which shows that the reconstructed phase currents track the actual currents accurately under different working conditions.

Item Type:	Article
Uncontrolled Keywords:	Fault tolerance, high frequency (HF) voltage injection, interior permanent magnet synchronous motor (IPMSM), phase current reconstruction, sensorless control
Depositing User:	Symplectic Admin
Date Deposited:	21 Nov 2017 09:59
Last Modified:	16 Mar 2024 20:08
DOI:	10.1109/TIE.2017.2767542
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3012450