Asymmetric Voltage Multiplied Non-Isolated Bidirectional DC-DC Converter with Soft-Switching and High Gain

This paper introduces a novel bidirectional DC-DC converter (BDC) that has a high gain of voltage, soft switching capability, and minimal ripple current on the low-voltage side (LVS). The suggested converter consists of an improved two-phase buck-boost converter, an Asymmetrical Voltage Multiplier cell, and a coupled inductor to provide a high-voltage gain converter. This paper offers a comprehensive theoretical examination of the converter. The converter elements, performance, and switching intervals provide suitable conditions for conducting the switches with zero voltage switching (ZVS) conditions. Due to the implementation of soft switching, the efficiency is increased, and no voltage spikes occur across the switches. The simulation was executed to design a converter and analyze its performance using the PSIM. The suggested converter offers an ultra-high voltage converting gain in both boost and buck operation modes. A laboratory prototype with a power of ۳۰۰W is implemented to validate the performance of the converter. The presented experimental results outline a low-side voltage of ۵۰V DC and a high-side voltage of ۳۰۰V DC during the step-up operation.

کلیدواژه ها:

Asymmetrical Voltage Multiplier ، DC-DC Converter ، High gain ، Soft Switching ، Non-Isolated