A Novel Three-Winding Coupled Inductor-Based High-Gain DCDC Converter With Low Switch Stress and Continuous Input Current

In this article, a novel three-winding coupled inductor (TWCL) based high-gain dc-dc converter is proposed, which combines a TWCL technique and a voltage multiplier cell, avoiding large duty cycle and resulting in a high gain of the converter. The input current continuity and common ground make the proposed converter suitable for renewable energy. In addition, the converter also has the characteristics of low voltage stress on switch and high efficiency. A passive clamp circuit recycles the energy stored in the leakage inductor of the coupled inductor and reduces the voltage spike of the switch, thus improving efficiency. The steady-state analysis, parameter design, and loss analysis of the proposed converter are discussed in detail, and the comparison among existing high-gain converters is discussed as well. Finally, experimental results verify the theoretical analysis.