A Two Input High Step Converter with Zero Current Switching Condition for Switches Turn-On Instances

Subject Areas : Electronic Engineering

Mahmood Vesali ¹ , Hosein Ranjbar ² , Amin Motamedi-Nasab ³

1 - Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
2 - Department of Electrical Engineering, Technical and Vocational University, Tehran, Iran
3 - Department of Physics, Technical and Vocational University, Tehran, Iran

Received: 2022-03-14 Accepted : 2022-07-17 Published : 2022-08-23

Keywords: dc-dc converters, soft switching, high step-up, Efficiency, two inputs,

Abstract :

A high step-up two-inputs DC-DC converter is presented in this paper. The soft switching condition is provided for switch in turn on instant, so the converter efficiency is high. Due to the fact that only the capacitor is used to increase the voltage gain and there are no coupled inductors in the converter, the input current of the converter is continuous. The technique used to increase gain can be used with more stages to achieve higher voltage gain. The converter can also be used as a single input intertwined instead of two inputs, which in this case the input current ripple is reduced. The voltage stress on the switches is lower than the output voltage, so lower voltage switches can be used, which reduces the converter cost. The proposed converter is completely analyzed and in order to prove the theoretical results, a simulation is performed on the converter at 500 watts. The results of the simulation at full load show an efficiency of about 95.5%.

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