A Phase Current Reconstruction Approach for Three-Phase Permanent-Magnet Synchronous Motor Drive

Hao Yan, Yongxiang Xu and Jibin Zou
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Hao Yan: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Yongxiang Xu: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Jibin Zou: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China

Energies, 2016, vol. 9, issue 10, 1-16

Abstract: Three-phase permanent-magnet synchronous motors (PMSMs) are widely used in renewable energy applications such as wind power generation, tidal energy and electric vehicles owing to their merits such as high efficiency, high precision and high reliability. To reduce the cost and volume of the drive system, techniques of reconstructing three-phase current using a single current sensor have been reported for three-phase alternating current (AC) control system using the power converts. In existing studies, the reconstruction precision is largely influenced by reconstructing dead zones on the Space Vector Pulse Width Modulation (SVPWM) plane, which requires other algorithms to compensate either by modifying PWM modulation or by phase-shifting of the PWM signal. In this paper, a novel extended phase current reconstruction approach for PMSM drive is proposed. Six novel installation positions are obtained by analyzing the sampling results of the current paths between each two power switches. By arranging the single current sensor at these positions, the single current sensor is sampled during zero voltage vectors (ZVV) without modifying the PWM signals. This proposed method can reconstruct the three-phase currents without any complex algorithms and is available in the sector boundary region and low modulation region. Finally, this method is validated by experiments.

Keywords: phase current reconstruction; single current sensor; permanent-magnet synchronous motor (PMSM); motor drive (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: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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