A Simple Shoot-Through Continuous and Discontinuous Space Vector Modulation for PMSM Driven By Z-Source Inverter

The Z-source inverter offers the unique advantage of providing voltage boosting capabilities, which is quite attractive in motor drive applications. This paper proposes a Shoot-Through Space Vector Modulation (SVM) strategy specifically designed for Permanent Magnet Synchronous Motors (PMSMs) driven by Z-Source Inverters (ZSI). The proposed modulation strategy is a simple boost modulation strategy, which only changes the modulation waveform of one leg and can realize both continuous pulse width modulation (CPWM) and discontinuous PWM (DPWM) modes. The proposed control strategy is easy to be integrated into fieldoriented control (FOC) by manipulate the ZS I’s shoot through duty cycle, ensuring optimal voltage supply to the PMS M across varying operating conditions. The strategy effectively manages to extend speed range while dynamically adapting to changes in voltage levels. Simulation and experimental results demonstrate speed and load response from PMSM by controlling the capacitor voltage, compared to traditional inverter control methods. This research contributes to the ongoing development of high-performance electric drive systems and enhances the applicability of Z-source technology.