CCM operation analysis of the single-phase three-level quasi-Z-source inverter

Abstract

This paper presents a CCM analysis of a new modification of a three-level single phase neutral-point-clamped inverter. The proposed topology combines advantages of the three-level neutral-point-clamped full-bridge inverter with those of the quasi-Z-source inverter. The three-level neutral-pointclamped quasi-Z-source inverter is especially suitable for renewable energy sources. The steady-state analysis of a threelevel neutral-point-clamped quasi-Z-source inverter in the case of the continuous conduction mode is presented. The conditions of the continuous conduction mode are obtained and analyzed.