Analysis, design, and implementation of soft‐switching cells applied to the single‐phase full‐bridge inverter

Abstract

This study presents an auxiliary cell that can be applied to the single-phase full-bridge inverter. The cell employs two auxiliary switches, two auxiliary diodes, one resonant capacitor, and one resonant inductor, as it can be used in both inverter legs so that switching losses are minimised, thus implying increased efficiency and low electromagnetic interference levels. Three possible configurations are investigated and theoretical analyses are carried out. Besides, the control strategy provides nearly sinusoidal output voltage with reduced harmonic distortion. Experimental results are presented and discussed to validate the proposal.

Implementation Analysis of Solar PV Based SEPIC Inverter System

“…The inverter converts DC power to AC power by providing the DC input voltage or current in a pre-defined sequential arrangement so as to produce AC voltage or current output. The single phase full bridge inverter involves a two arms with a two semiconductor switches on both arms and having antiparallel freewheeling diodes with each switch for discharging the reverse current [19]. Generally in the case of RL load equipment, these diodes allow to flow reverse load current through it and these diodes also provide an alternative route to inductive current which remain so run during the Turn OFF situation as shown in Fig.…”

Implementation of two‐output three‐level series‐resonant inverter for induction melting application

“…As the matter of fact, a switching frequency directly affects to a different phase between the output voltage and current of inverter. In order to maintain the ZVS condition [33][34][35][36][37], the switching frequency (f s ) has to be maintained slightly higher than the resonant frequency (f r ) all the time. The variable frequency control (VFC) technique has been proposed in order to maintain the ZVS condition over a wide load range in [38].…”