A Cascaded Coupled Inductor-Reverse High Step-Up Converter Integrating Three-Winding Coupled Inductor and Diode-Capacitor Technique

作者：Li, Fei; Liu, Hongchen^*

来源：IEEE Transactions on Industrial Informatics, 2017, 13(3): 1121-1130.

DOI：10.1109/TII.2016.2637371

• Cascaded high step-up converter
• coupled inductor-reverse
• low voltage stress
• reduced turns ratio

This paper introduces a cascaded high step-up converter realized with a tightly coupled three-winding coupled inductor. Compared with existing high step-up converters, the proposed converter features that the smaller the turns ratio, the larger the conversion gain. So, the name coupled inductor-reverse is given to represent reverse-coupled inductor principle of operation. In addition, diode-capacitor circuit is introduced to not only recycle leakage energy to output, but also further lift voltage conversion gain. This paper illustrates operation principle of the proposed converter, discusses effect of leakage inductance on voltage gain, and deduces voltage and current stresses of components. Finally, a prototype rated at 400 W has been established, and experimental results verify correctness of the above theoretical analysis.

• 出版日期2017-6
• 单位哈尔滨工业大学