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Open AccessArticle

A Novel Direct Torque Control Method Based on Asymmetric Boundary Layer Sliding Mode Control for PMSM

Beijing Co-innovation Center for Electric Vehicles, Beijing Institute of Technology, Beijing 100081, China
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Energies 2018, 11(3), 657; https://doi.org/10.3390/en11030657
Received: 20 January 2018 / Revised: 8 March 2018 / Accepted: 8 March 2018 / Published: 15 March 2018
(This article belongs to the Special Issue The International Symposium on Electric Vehicles (ISEV2017))
A novel direct torque control (DTC) method based on sliding-mode-control (SMC) strategy is proposed for permanent magnet synchronous motor (PMSM) which is used in electric vehicles (EVs). In order to improve the dynamic response time and enhance the robustness performance against the external loading disturbances and motor parameter’s variation, a kind of SMC-based torque controller and speed controller are designed to regulate the torque angle increment and the speed respectively. The torque controller is designed based on a sliding mode controller with an asymmetric boundary layer to reduce the overshoot. Compared with other DTC methods based on space vector modulation (SVM) in the literature, the proposed DTC scheme adopts the asymmetric boundary layer SMC instead of the proportional-integral (PI) regulator. The simulation results have validated the effectiveness of the proposed SMC-based DTC method. View Full-Text
Keywords: direct torque control; permanent-magnet synchronous motor; sliding mode control; asymmetric boundary layer; space vector modulation (SVM) direct torque control; permanent-magnet synchronous motor; sliding mode control; asymmetric boundary layer; space vector modulation (SVM)
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Song, Q.; Li, Y.; Jia, C. A Novel Direct Torque Control Method Based on Asymmetric Boundary Layer Sliding Mode Control for PMSM. Energies 2018, 11, 657.

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