Coupled‐inductor‐inverse high step‐up converter

This study presents a novel high conversion gain converter with a tightly coupled‐inductor‐inverse for distributed generation system, where high conversion gain is regularly required. The new converter utilises coupled‐inductor‐inverse network for high conversion gain applications that is not presently comparable with the existing coupled inductor‐based high conversion gain converters. The new converter has a unique feature that the voltage gain is lifted by reducing the turns ratio of the coupled inductor. Subsequently, the diode–capacitor circuit is introduced to primarily recycle the leakage energy, and secondly help to boost the output voltage. This study depicts the main waveforms of the proposed converter and the relevant derivation of the operation principle. The theoretical analysis is verified by the experimental waveforms based on a prototype circuit rated 400 W output power.