An Interleaved Non-Isolated High Step-Up DC-DC Converter Using Coupled Inductors and Voltage Multiplier Cells

This research aims to construct a high gain boost DCDC converter using the interleaved technique with coupled inductors (CIs) and voltage multiplier cells (VMCs). The presence of capacitors increases the voltage gain, which leads to a decrease in the switches’ voltage stress. The switches’ voltage is significantly lower than the output voltage. It makes it possible to use MOSFET switches with a lower voltage rate, which, in addition to cost reduction, leads to decreased conduction losses. Also, due to the presence of coupled inductors, the decreasing diode current is controlled through leakage inductances. In this case, zero-current switching is established when the diodes are turned off, which increases efficiency. In this article, The stability of the suggested converter has been assessed and verified. Also, this converter has the feature of a symmetrical input current and common ground between input and output. With an input voltage of 20 V and a voltage gain of 26.6, the output voltage is 533 V, resulting in a power of 320 W. Moreover, the calculated equations are proven through simulation.