Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 36, Issue 10, Pages 11910-11920Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2021.3068495
Keywords
Convergence; Estimation; Observers; Rotors; Robustness; Stators; Mathematical model; Chattering suppression; finite-time convergence; high-order terminal sliding mode observer (HOTSMO); surface-mounted permanent magnet synchronous motor (SPMSM)
Categories
Funding
- National Natural Science Foundation of China [51690182, 51807038]
- Natural Science Foundation of Heilongjiang Province of China [YQ2020E018]
- China Postdoctoral Science Foundation [2019T120267]
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This article proposed a high-order terminal sliding-mode observer (HOTSMO) for sensorless SPMSM drives, achieving finite-time convergence and chattering suppression using a terminal sliding-mode surface and a high-order sliding-mode control law. The HOTSMO demonstrated high estimation accuracy without sacrificing robustness in experimental verification on a 4.4-kW ARM-based SPMSM platform.
Due to the advantages of strong robustness and fast convergence, the sliding-mode observer (SMO) is considered as an effective approach for sensorless surface-mounted permanent magnet synchronous motor (SPMSM) drives. However, the inherent chattering and none finite-time convergence are still challenging problems in SMO application. To address these problems, this article proposed a high-order terminal SMO (HOTSMO) for SPMSM position estimation. First, a terminal sliding-mode surface is designed to achieve finite-time convergence of state variables. Second, a high-order sliding-mode control law is presented to achieve chattering suppression. Compared with the conventional SMO, the studied HOTSMO can achieve high estimation accuracy without sacrificing strong robustness of SMO. The effectiveness of the studied scheme is experimentally verified on a 4.4-kW ARM-based SPMSM platform.
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