Closed loop operation and testing with processor-in-loop (PIL) simulation of an asymmetrical six-phase open-ended winding synchronous machine

This paper presents a simple closed loop indirect field-oriented controlled operation for an asymmetrical six-phase open-ended winding synchronous motor in a newly defined two-axis (M-T) coordinate system, in which the common mutual leakage coupling between the two stator winding sets has been considered. Phasor diagram of the vector-controlled motor is developed under steady-state. Performance of a six-phase synchronous machine is presented in all four quadrant operations. A complete mathematical model is developed and controlled in a closed loop on Matlab/Simulink environment. Suitability and practical validity of the proposed control scheme are shown by conducting a test using processor-in-loop (PIL) by employing the STM32F407G board. An efficient data transfer at a high baud rate was obtained between the target board and host through an externally connected serial communication interface by using a USB-USART converter i.e. FT32RL board.