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Harmonic Current Suppression of Dual Three-Phase PMSM Based on Model Predictive Direct Torque Control

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  • Bicheng Lei
  • Lingwei Wu
  • Zhiming Lin
  • Pan Mei

Abstract

The traditional direct torque control (DTC) method will produce a larger harmonic current in the x , y subspace when applied to a dual three-phase permanent magnet synchronous machine (DTP-PMSM) because the voltage vector used for DTC is not equal to zero in the x , y harmonic subspace. To mitigate this problem, in this manuscript, a model predictive direct torque control (MPDTC) method is proposed to eliminate the harmonic current in DTP-PMSM. The spatial distribution characteristic DTP-PMSM voltage vector is analyzed; then, the table of vector group can be obtained according to DTC, and each vector group can be combined to obtain the zero-voltage vector in the x , y subspace. According to the cost function, MPDTC selects the vector group and obtains the optimal vector sequence combination to eliminate the harmonic current in the x , y subspace. Furthermore, the MPDTC achieves closed-loop control of harmonic currents in the x , y subspace. The MPDTC can also eliminate harmonic currents caused by other factors. The simulation results show that the method of MPDTC can effectively suppress the harmonic current of DTP-PMSM.

Suggested Citation

  • Bicheng Lei & Lingwei Wu & Zhiming Lin & Pan Mei, 2021. "Harmonic Current Suppression of Dual Three-Phase PMSM Based on Model Predictive Direct Torque Control," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-10, July.
    • Handle: RePEc:hin:jnlmpe:3043673
    DOI: 10.1155/2021/3043673
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