一种高功率因数无电解电容PMSM的设计与仿真

doi:10.16180/j.cnki.issn1007-7820.2021.12.003

Abstract

Abstract:

Permanent magnet synchronous motors are widely used because of low cost and long life. Low power factor and high current distortion rate are the major problems in the application of permanent magnet synchronous motors without electrolytic capacitor. In view of the problems above, this study puts forward a strategy of quadrature axis phase compensation and direct axis field weakening control based on the analysis of the power factor of the permanent magnet synchronous motors and the vector control algorithm, and establishes a simulation model in MATLAB/Simulink environment for verification. The simulation results show that under the condition of bus voltage fluctuations, the motor quadrature axis and direct axis current can track the fluctuating given current smoothly. Compared with the traditional vector control, the proposed control strategy eliminates the phase difference between the current and the voltage, and the power factor reaches 93.51%. The simulation results reveal that the phase compensation combined with the field weakening control strategy can effectively improve the power factor and reduce the electromagnetic pollution of the motor system to the power grid.

Key words: permanent magnet synchronous motor, vector control, non-electrolytic capacitor, high power factor, phase compensation, field weakening control, space vector pulse width modulation, MATLAB

CLC Number:

TP273

JIANG Kaiwen,JIN Hai,XU Shen. Design and Simulation of High Power Factor PMSM without Electrolytic Capacitor[J].Electronic Science and Technology, 2021, 34(12): 13-18.

Figures/Tables 11

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Design and Simulation of High Power Factor PMSM without Electrolytic Capacitor

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