Ultra-High Step-Up DC-DC Converters Based on Center-Tapped Inductors

In this paper, a new family of ultra-high step-up DC-DC converters based on center-tapped coupled inductor (CI) is proposed. These single-switch employ different inductive and capacitive power transfer techniques by utilizing multi-winding CIs, intermediate capacitor links simple switched-capacitors to improve the transferred rate, harvest magnetizing leakage inductance energies, enhance density. Achieving high voltage gain in low duty cycle values enables proposed operate under wide output ranges; meanwhile, distributing two or three ports alleviates stress terminal components. Low input current ripple, pulse width modulation control, switch operation without circulating can be listed as other features. introduced, theoretically analyzed compared with state-of-the-art researches. Finally, accuracy analyses are evaluated some experimental tests 1.25 kW prototype.