A HIGH VOLTAGE GAIN DC–DC CONVERTER INTEGRATING COUPLED-INDUCTOR AND DIODE CAPACITOR TECHNIQUES

• The high-voltage gainconverter is widely employed in many industry applications, such as photovoltaic systems, fuel cell systems, electric vehicles, and high-intensity discharge lamps. 
• This paper presents a novel single-switch high step-up nonisolated dc–dc converter integrating coupled inductor with extended voltage doubler cell and diode–capacitor techniques. 
• The proposed converter achieves extremely large voltage conversion ratio with appropriate duty cycle and reduction of voltage stress on the power devices.
•  Moreover, the energy stored in leakage inductance of coupled inductor is efficiently recycled to the output, and the voltage doubler cell also operates as a regenerative clamping circuit, alleviating the problem of potential resonance between the leakage inductance and the junction capacitor of output diode. 
• These characteristics make it possible to design a compact circuit with high static gain and high efficiency for industry applications.

High voltage gain DC DC converter

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