کنفرانس بین المللی ماشین و محرکه های الکتریکی

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

Fault-Tolerant Control and Torque Ripple Reduction of a Fully Modular Six-Phase Asymmetric Open-End Winding PMSM Drive

نویسندگان :

Abolfazl Halvaei Niasar¹

1- University of Kashan

کلمات کلیدی :

Electric drive،Torque ripple reduction،Six-phase open-end PMSM،Reliability،Proportional-resonant controller

چکیده :

In medium-to-high-power electric drive applications where high reliability is a critical requirement, six-phase open-end winding permanent magnet synchronous motors (OE-PMSMs) are widely employed. This paper focuses on controlling a specific type of such a drive, where each motor phase is equipped with a dedicated microcontroller. Since each phase is connected to an independent H-bridge single-phase inverter, the drive structure is entirely modular. Due to the absence of data exchange between microcontrollers, conventional two-axis dq transformations and control methods based on them are impractical, necessitating modeling in a stationary six-axis reference frame. To achieve optimal torque production, a stationary frame vector control method is independently applied to each phase. In the event of a fault, a fault-tolerant control (FTC) algorithm is proposed to eliminate torque ripple by balancing the second harmonic torque components across all phases. It is demonstrated that in this modular drive structure, torque ripple can be eliminated under most fault conditions. The theoretical analyses and the effectiveness of the proposed control methods are validated through simulations in Simulink, covering both healthy and various fault scenarios.