Review of resonant link topologies for inverters

Abstract

Resonant link inverter configurations have been proposed as a means of obtaining significantly lower switching losses, thereby allowing operating frequencies and switch power ratings to be raised. In the paper, resonant link topologies are analysed by means of time-domain simulation, and the frequency spectrum typical of a resonant link inverter is compared with one typical of a hard-switched inverter. The resonant link system results in an increase in circuit complexity, and the frequency spectrum is limited by the need to employ integral pulse-modulation techniques.