A new group of active impedance source inverters with lower components and voltage stress across active switches

This paper proposes a new group of active impedance source inverters along with an appropriate pulse-width modulation (PWM) control method. These inverters have reduced voltage stress across capacitors, diodes, and active switches in comparison to conventional topologies. The paper provides a detailed explanation of the control method used to generate gate pulses for the switches, as well as the analysis of all operating modes. The calculation of the boost factor and the design of capacitors and inductors are presented. A comparative analysis is conducted from various perspectives, such as the boost factor, the total stress voltages on active switches, diodes, capacitors, the volume of passive components, and the efficiency of proposed and conventional topologies. The results show better performance for the proposed topologies compared to conventional topologies. Finally, the experimental results from one prototype validate the analytical findings.