Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 29, Issue 6, Pages 3055-3064Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2013.2276613
Keywords
Adaptive compensation; adaptive notch filter; interior permanent magnet synchronous motor (IPMSM) drive; inverter nonlinearity; position estimation error; position observer; sensorless
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Funding
- Research Fund for the National Science Foundation of China [51207030, 51209055]
- Postdoctoral Science-Research Developmental Foundation of Heilongjiang Province [LBH-Q12087]
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To improve the performance of sensorless interior permanent magnet synchronous motor (IPMSM) drives, a quadrature phase-locked loop (PLL) with an adaptive notch filter (ANF) is proposed for the model-based sliding-mode observer (SMO). The position estimation error with the sixth harmonic distortion caused by the inverter nonlinearity and the flux spatial harmonics is analyzed. The ANF based on adaptive noise canceling principle combined with the quadrature PLL is proposed to diminish the estimation harmonic error. This method can adaptively compensate the harmonics in the estimated electromotive force to eliminate the corresponding position estimation error. The estimated harmonic coefficients from the ANF can be continuously self-tuned using the least-mean-squares algorithm according to the estimated position information. The effectiveness of the proposed method is verified with the experimental results at a 2.2-kW IPMSM sensorless drive.
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