Switch-Level Interleaved Converter: Circuit Operation, Output Ripple and Circulating Current

Abstract

This paper discusses an interleaved converter topology for DC-AC conversion in power electronics applications. The proposed topology leverages a switch-level interleaving technique to overcome the limitations of conventional interleaved inverters. Through comprehensive analysis and simulation studies, it is demonstrated that the interleaved inverter achieves higher power density and improved ripple frequency as compared to conventional counterparts. In this paper, different figures of merit are considered in order to assess the proposed converter scheme performance such as current ripple parameters, circulating current and semiconductor losses. One of the main advantages of the proposed technology over conventional interleaving converters is the use of a single inductor, which enables its use not only in grid-tied applications but also in electric drives.

Keywords

• DC-AC conversion
• pulse-width modulation
• single-phase inverters
• interleaved converters