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Torque Ripple Suppression for Permanent-Magnet Synchronous Motor based on Enhanced LADRC Strategy

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Abstract

Permanent-Magnet Synchronous Motor has shown advanced performance in the industry, but its smooth operation is affected by torque ripple. The conventional Linear Active Disturbance Rejection Controller (LADRC) has a strong anti-interference ability. However, this usually makes it more sensitive to measurement noise, reducing steady-state accuracy. This study proposes an Enhanced LADRC controller to obtain strong system disturbance and noise suppression performance. Firstly, the total disturbance differential signal is introduced into the Linear Extended State Observer to improve the anti-disturbance ability of the system, and the bandwidth parameter configuration method is used to reduce the number of parameters be adjusted in the controller to two. Second, A Fal-Filter is built through the nonlinear function and inserted into the controller to weaken the measurement noise. Finally, the simulation model is established on the dSPACE motor control platform, and the corresponding control algorithm is implemented. Simulation and experimental results show that the control scheme can significantly improve the phase current distortion and reduce torque ripple.

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Authors and Affiliations

  1. School of Electrical Engineering, Shanghai Dianji University, Shanghai, China

    Zhaoyuan Zhang, Yao Chen, Lisi Tan & Chaohui Zhao

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  1. Zhaoyuan Zhang
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  2. Yao Chen
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  3. Lisi Tan
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  4. Chaohui Zhao
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Correspondence to Chaohui Zhao.

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Zhang, Z., Chen, Y., Tan, L. et al. Torque Ripple Suppression for Permanent-Magnet Synchronous Motor based on Enhanced LADRC Strategy. J. Electr. Eng. Technol. 17, 2753–2760 (2022). https://doi.org/10.1007/s42835-022-01164-6

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  • DOI: https://doi.org/10.1007/s42835-022-01164-6

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