High gain DC-DC converter based on Quasi-Z-Source

This paper introduces an innovative non-isolated, high-voltage-gain DC-DC converter utilizing a quasi-Z source topology integrated with a switching capacitor mechanism. This converter boasts the capability of achieving substantial voltage amplification even at low duty cycles, making it an efficient and straightforward solution. Furthermore, the article delves into the fundamental operating principles of this converter, outlines a method for parameter optimization, and compares its performance to alternative high-gain DC-DC converters, highlighting its unique advantages. Finally, a 30V to 180V, 100W converter with an efficiency of 91.2% was fabricated to verify the theoretical analysis.