Design of Position Estimation Strategy of Sensorless Interior PMSM at Standstill Using Minimum Voltage Vector Injection Method

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  • Xuan Wu
  • Shoudao Huang
  • Xiao Liu
  • Kaiyuan Lu
  • Jian Gao
  • Jian Zheng

Abstract

This paper presents a new initial rotor position estimation method for an interior permanent magnet synchronous motor. The proposed method includes two steps: firstly, the minimum voltage vectors are injected to estimate the rotor position. Secondly, in order to identify the magnet polarity accurately, two opposite voltage pulses are injected on the estimated d-axis. In the proposed method, no filter is needed to draw the high frequency current signal for position estimation and no low pass filter is required in the current control loop for exacting the fundamental current component for field oriented control. The fast and reliable feature of this proposed method allows starting the motor with 100% load torque. The effectiveness of the proposed method is verified experimentally and the maximum position estimation error is around 6 electrical degrees.
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Detaljer

This paper presents a new initial rotor position estimation method for an interior permanent magnet synchronous motor. The proposed method includes two steps: firstly, the minimum voltage vectors are injected to estimate the rotor position. Secondly, in order to identify the magnet polarity accurately, two opposite voltage pulses are injected on the estimated d-axis. In the proposed method, no filter is needed to draw the high frequency current signal for position estimation and no low pass filter is required in the current control loop for exacting the fundamental current component for field oriented control. The fast and reliable feature of this proposed method allows starting the motor with 100% load torque. The effectiveness of the proposed method is verified experimentally and the maximum position estimation error is around 6 electrical degrees.
OriginalsprogEngelsk
Artikelnummer8110804
TidsskriftIEEE Transactions on Magnetics
Volume/Bind53
Tidsskriftsnummer11
Antal sider4
ISSN0018-9464
DOI
StatusUdgivet - nov. 2017
PublikationsartForskning
Peer reviewJa
ID: 261082130