Switched Inductor Z-Source Inverter with Modified Space Vector Pulse Width Modulation for Uninterruptible Power Supply

Abstract

This paper implies the modified space vector pulse width modulation for switched inductor z-source inverter-based uninterrupted power supply. In a conventional inverter-based uninterrupted power supply system, efficiency is reduced because of additional devices. The output voltage of the proposed switched inductor z-source inverter with modified space vector pulse width modulation will be increased by using the boost factor concept, which is not possible in conventional inverters. This inverter has a shoot-through operating state along with the active state and zero state; hence, voltage boost capability is raised. The shoot-through pulses are uniformly allocated within the zero state in each phase in order to increase the output voltage. Hence, voltage due to zero state is condensed in order to generate shoot-through state and the active states remain the same. Theoretical results for the proposed uninterrupted power supply based on switched inductor z-source inverter with modified space vector pulse width modulation technique are verified and validated by using MATLAB/Simulink software.