Experimental Analysis of Wide Input Voltage Range qZS-derived Push-Pull DC/DC Converter for PMSG-based Wind Turbines

摘要

This paper presents a new isolated step-up DC/DC converter topology derived by combining two qZS-based step-up DC/DC converters with coupled inductors. The proposed converter is intended for applications that require a high gain of the input voltage and galvanic isolation, i.e. power conditioning systems for alternative and renewable energy sources, such as variable speed wind turbine systems or fuel cells. The operation principle of the converter is explained. A case study system based on real characteristics of a PMSG-based wind turbine is described. Finally, the experimental results and an efficiency analysis of the proposed converter are presented.