This thesis proposes a multi-sequence space vector pulse-width modulation (SVPWM) framework for split-phase induction motor drives that enables decoupled control of two three-phase stator sets using a single voltage source inverter while minimizing electromagnetic torque ripple and improving fault-tolerant operation. A rigorous analytical framework is developed to characterize the instantaneous error-voltage trajectories associated with different switching sequences and to quantify their impact on stator flux and torque ripple. Based on this analysis, an adaptive sequence selection strategy is proposed to minimize the q-axis stator flux ripple. The approach is first validated on a single split-phase induction machine, demonstrating a significant reduction in peak-to-peak torque ripple compared to conventional SVPWM.

The proposed framework is then extended to series-connected split-phase induction machines, where decoupled control of both machines is achieved using a single inverter under healthy operation as well as open-circuit fault conditions, while maintaining torque ripple minimization. In addition, the thesis demonstrates the use of the split-phase induction machine as a conventional three-phase machine in an integrated battery charger configuration for electric vehicle applications. In this mode, the motor drive hardware operates as a single-phase grid-connected active front-end AC–DC converter with unity power factor, using the stator windings as grid-interface inductances and eliminating bulky external inductors. Simulation and experimental results validate the effectiveness and versatility of the proposed modulation framework across drive and charging applications.