Development of single-phase current source inverter with power decoupling function

The authors have developed a single-phase current source inverter with a power decoupling function, with the application of a matrix converter. The inverter achieves high efficiency since a step-up chopper circuit is not required, and realizes a circuit structure that enables size reduction and longer service life without an electrolytic capacitor for smoothing DC voltage. This paper describes the proposed circuit structure and characteristics as well as the charge and discharge simulation results.