Print Email Facebook Twitter A Sliding-Mode Position Estimation Method with Chattering Suppression for LCL-Equipped High-Speed Surface-Mounted PMSM Drives Title A Sliding-Mode Position Estimation Method with Chattering Suppression for LCL-Equipped High-Speed Surface-Mounted PMSM Drives Author Yao, Yu (Southeast University) Huang, Yunkai (Southeast University) Peng, Fei (Southeast University) Dong, J. (TU Delft DC systems, Energy conversion & Storage) Date 2022 Abstract This article proposes a sliding-mode position estimation method for high-speed surface-mounted permanent magnet synchronous machines with LCL filter. The implementation of the LCL filter aims at smoothing the motor current and reducing the iron loss caused by the harmonic currents. First, the discrete-time model of the LCL-filtered motor drive system is developed. Based on the developed model, the sliding-mode observer is proposed with more robustness against the parameter variation to estimate the back EMF, which contains the information of the rotor speed and position. Because of the elimination of the capacitor voltage sensors, the augmented sliding surface is designed to achieve arbitrary pole placement with only output feedback. Besides, considering the analog-to-digital scaling error and pulsewidth modulation harmonics, a reaching law with enhanced chattering suppression ability is proposed. Compared with the conventional methods, the chattering problem is well alleviated and thus the speed estimation ripple is much reduced. Finally, the effectiveness of the proposed method, even with the mismatched parameters adopted is validated at 100 kr/min with the sampling frequency 20 kHz. Subject Chattering suppressionhigh-speed surface-mounted permanent magnet synchronous machine (HSPMSM)LCL filterrotor positionsliding-mode estimationspeed estimation ripple To reference this document use: http://resolver.tudelft.nl/uuid:312f4651-c0de-4d98-bdab-cffe0f94d8f4 DOI https://doi.org/10.1109/TPEL.2021.3108389 Embargo date 2022-03-02 ISSN 0885-8993 Source IEEE Transactions on Power Electronics, 37 (2), 2057-2071 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Yu Yao, Yunkai Huang, Fei Peng, J. Dong Files PDF A_Sliding_Mode_Position_E ... ves_2_.pdf 4.92 MB Close viewer /islandora/object/uuid:312f4651-c0de-4d98-bdab-cffe0f94d8f4/datastream/OBJ/view