Optimal Zero-Sequence Selection for Five-Leg Inverter Based on Two-Phase SVPWM Fed Dual Two-Phase Induction Motors

Abstract

This paper presents an optimal zero-sequence selection based on two-phase space vector pulse width modulation for five-leg inverter fed dual two-phase induction motors. The proposed zero-sequence selection of common b is determined which can reduce the peaks of resultant duty cycle before overmodulation resulting in an extension of a linear range of modulation index. As a result, the proposed strategy offers better DC-bus utilization when compared to a conventional strategy for a five-leg voltage source inverter.