کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 5th International Conference on Electrical Machines and Drives

Control of a Modular, Dual Winding, Six-Phase Permanent Magnet Synchronous Motor as Four-Star Connections

نویسندگان :

Davood Maleki¹ Abolfazl Halvaei Niasar²

1- University of Kashan 2- University of Kashan

کلمات کلیدی :

Electric drive،harmonic current injection method،six-phase PMSM with dual stator windings،proportional-resonant controller،reliability

چکیده :

In electric propulsion systems used for high-power applications, multiphase PMSMs are highly regarded for enhancing reliability. This paper focuses on the control of a six-phase PMSM drive with dual stator windings, where the two windings of each phase are aligned with each other and symmetrically placed in two sections relative to the stator center. The 12 windings are connected as four separate three-phase star connections, with each three-phase group powered by three-phase inverter. Each three-phase inverter is controlled by its dedicated microcontroller. Due to the magnetic coupling between the three-phase sets, the independence of the microcontrollers, and the absence of data exchange between them, conventional dq-axis modeling and control methods cannot be applied. Therefore, modeling is performed in a stationary 6-phase reference frame. Additionally, given the non-sinusoidal back-EMF voltages of each phase, harmonic current injection is independently applied to each three-phase set to reduce torque ripple. In this regard, quasi-proportional-resonant current controllers are employed. Finally, in the event of a two-phase fault, a torque ripple reduction algorithm is proposed. The results of the theoretical analyses are validated through software simulations in Simulink.