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<p>In this paper, a novel combination of synergetic control and direct torque control (DTC) based on space vector modulation (SVM) for sensorless five-phase permanent magnet synchronous machine using extended Kalman filter observer is presented. In order to mitigate the torque and stator flux ripples and keep a constant switching frequency, which are the main drawbacks of conventional DTC, a SVM block is used. This modified DTC method, known as DTC-SVM, is based on PI controllers to generate the reference control voltages. But, in presence of external disturbances or parameters change, PI controllers are generally inefficient. For this reason, a synergetic control is proposed, in which the stability of the control method is guaranteed based on Lyapunov theory. The synergetic control is adopted because it inherits the sliding mode control (SMC) advantages without the chattering effect. For the sake of increasing the multiphase drive reliability and decreasing its cost, the extended Kalman filter is used to estimate the stator flux and rotor speed as well. The effectiveness and robustness of the proposed approach compared to SMC-DTC-SVM, PI-DTC-SVM and conventional DTC are demonstrated by extensive simulation results.</p>

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Sensorless direct torque control of a five-phase PMSM Based on synergetic control using extended Kalman filter

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • N. Bounasla,
  • S. Barkat

摘要

In this paper, a novel combination of synergetic control and direct torque control (DTC) based on space vector modulation (SVM) for sensorless five-phase permanent magnet synchronous machine using extended Kalman filter observer is presented. In order to mitigate the torque and stator flux ripples and keep a constant switching frequency, which are the main drawbacks of conventional DTC, a SVM block is used. This modified DTC method, known as DTC-SVM, is based on PI controllers to generate the reference control voltages. But, in presence of external disturbances or parameters change, PI controllers are generally inefficient. For this reason, a synergetic control is proposed, in which the stability of the control method is guaranteed based on Lyapunov theory. The synergetic control is adopted because it inherits the sliding mode control (SMC) advantages without the chattering effect. For the sake of increasing the multiphase drive reliability and decreasing its cost, the extended Kalman filter is used to estimate the stator flux and rotor speed as well. The effectiveness and robustness of the proposed approach compared to SMC-DTC-SVM, PI-DTC-SVM and conventional DTC are demonstrated by extensive simulation results.