Square-Wave Voltage Injection Algorithm for PMSM Position Sensorless Control With High Robustness to Voltage Errors

Rotor position estimated with high-frequency (HF) voltage injection methods can be distorted by voltage errors due to inverter nonlinearities, motor resistance, and rotational voltage drops, etc. This paper proposes an improved HF square-wave voltage injection algorithm, which is robust to voltage e...

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Veröffentlicht in:IEEE transactions on power electronics 2017-07, Vol.32 (7), p.5425-5437
Hauptverfasser: Ronggang Ni, Dianguo Xu, Blaabjerg, Frede, Kaiyuan Lu, Gaolin Wang, Guoqiang Zhang
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container_end_page 5437
container_issue 7
container_start_page 5425
container_title IEEE transactions on power electronics
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creator Ronggang Ni
Dianguo Xu
Blaabjerg, Frede
Kaiyuan Lu
Gaolin Wang
Guoqiang Zhang
description Rotor position estimated with high-frequency (HF) voltage injection methods can be distorted by voltage errors due to inverter nonlinearities, motor resistance, and rotational voltage drops, etc. This paper proposes an improved HF square-wave voltage injection algorithm, which is robust to voltage errors without any compensations meanwhile has less fluctuation in the position estimation error. The average position estimation error is investigated based on the analysis of phase harmonic inductances, and deduced in the form of the phase shift of the second-order harmonic inductances to derive its relationship with the magnetic field distortion. Position estimation errors caused by higher order harmonic inductances and voltage harmonics generated by the SVPWM are also discussed. Both simulations and experiments are carried out based on a commercial PMSM to verify the superiority of the proposed method and the investigations in this paper.
doi_str_mv 10.1109/TPEL.2016.2606138
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The average position estimation error is investigated based on the analysis of phase harmonic inductances, and deduced in the form of the phase shift of the second-order harmonic inductances to derive its relationship with the magnetic field distortion. Position estimation errors caused by higher order harmonic inductances and voltage harmonics generated by the SVPWM are also discussed. 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source IEEE Electronic Library (IEL)
subjects Algorithms
Computer simulation
Electric potential
Error analysis
Estimation error
Hafnium
Harmonic analysis
Harmonic inductance
high-frequency (HF) square-wave voltage injection
permanent magnet synchronous machine (PMSM)
Position sensing
position sensorless control
Pulse width modulation
Robust control
Rotors
Variations
Voltage control
voltage error
title Square-Wave Voltage Injection Algorithm for PMSM Position Sensorless Control With High Robustness to Voltage Errors
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