Direct Instantaneous Torque Control of Switched Reluctance Machine Based on Modular Multi-Level Power Converter

The application of the modular power converter can effectively reduce the complexity and cost of the switched reluctance machine (SRM) drive system. However, the series excitation and limited voltage level make the torque ripple relatively high. In this paper, based on the modular converter and 3-level switch module, a novel modular multi-level power converter is proposed, and the direct instantaneous torque control (DITC) is implemented with it. The detailed simulation and experimental results indicate that the DITC with the modular multi-level power converter can remarkably reduce the torque ripple of the SRM drive system.