PDF] Novel Isolated High-Step-Up DC–DC Converter With Voltage Lift

A novel two-switch high-step-up isolated converter with voltage lift is proposed in this paper, which utilizes a transformer with low turn ratio to achieve high step-up gain and improves conversion efficiency. A novel two-switch high-step-up isolated converter with voltage lift is proposed in this paper. The proposed isolated converter utilizes a transformer with low turn ratio to achieve high step-up gain. The secondary winding charges two boosting capacitors in parallel as switches during the switch-on period, and two boosting capacitors are discharged in series during the switch-off period. Thus, the converter has high voltage gain with appropriate duty ratio. In addition, by using two clamping diodes and a capacitor on the primary side, leakage energy is recycled, and the voltage spikes of the two active switches are clamped, thereby improving conversion efficiency. Finally, experimental results based on a prototype implemented in the laboratory with an input voltage of 24 V, an output voltage of 200 V, and an output power of 200 W verify the performance of the proposed isolated converter; full-load efficiency is nearly 93%.

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PDF) A Non-Isolated High Step-Up DC-DC Converter Using Voltage Lift Technique: Analysis, Design, and Implementation

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PDF) Isolated Switched Boost Push Pull DC-DC Step-up Converter

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Full article: High step-up DC-DC converter based on double self-lift switched-coupled-inductor

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