Indirect field oriented control of five-phase induction motor based on SPWM-CSI

Abstract

Three-phase current source inverter (CSI)-based induction motor (IM) drives are attractive in MV applications since they feature a simple inverter structure, a lower switching dv/dt, and a reliable short circuit protection. Although multiphase machine topic, especially the five-phase one, gains considerable interest recently in literature, almost all the applied control methods are targeting voltage source inverters (VSIs). Using multiphase CSIs in multiphase machine applications is limited due to the difficulty of fulfilling the CSI gating requirements and the difficulty of modulation index control. In this paper, a five-phase SPWM-CSI is employed to drive a five-phase IM using indirect field oriented control (IFOC) through SPWM mapping technique with controlled modulation index. Additionally, the proposed method provides a reduced number of measurements, where the capacitor currents are automatically compensated via the modulation index controller. A simulation model has been built using MATLAB/SIMULINK to investigate the proposed system under different loading conditions.