A novel single-stage AC/DC converter is proposed in this letter. The converter is designed by integrating a sepic circuit and a flyback circuit, the circuit work in the quasi-resonance state, and the switch is turned on in the zero voltage switching (ZVS) state, which decreased the switching losses of the converter Streszczenie. Opisano nowy konwerter AC/DC. Układ pracuje w stanie quasi-rezonan...

The article highlights and optimizes a controller for the single ended primary inductance converter (SEPIC) direct current-direct current (DC-DC) converter. SEPIC adjusts range of dc input voltages delivers constant stable output voltage. Three different models are presented in order to derive its transfer function. Being 4th order, an approximation method reduction this function 2nd 1st is imp...

Light Emitting Diodes (LEDs) with their current performances have been proved to be the most suitable solution for street lighting applications. Nowadays, a topic of interest in this context is the design for electronic driver in order to take the advantage of LEDs performances. However, requirements such as high power factor, long life time, accurate current control and high efficiency pose ch...

High efficiency DC-DC converters with high-voltage gain have been researched due to increasing demands. A soft-switching single-ended primary inductor converter (SEPIC) is presented in this work. An auxiliary switch and a clamp capacitor are presented in this project. A coupled inductor and an auxiliary inductor are utilized to obtain ripple-free input current and achieve zero voltage-switching...

Photovoltaic (PV) systems are increasingly used to generate electric energy from the solar irradiation incident on PV modules. The single ended primary inductance converter (SEPIC) is studied for maximum power point tracking and battery charging. High MPPT accuracy and high conversion efficiency can be achieved for different atmospheric conditions. A pulse-current-charging scheme with adaptive ...

Design of DC-DC converters like Cuk and SEPIC, which are fourth-order converters, play a vital role in the design electric vehicle (EV) charging systems drivers for LED. These possess unique feature input current being continuous due to presence an inductor series with supply voltage. In present work, generalized approach obtaining frequency response transfer function duty cycle output voltage ...