Zero voltage switching‐pulse width modulation technique‐based interleaved flyback converter for remote power solutions

Abstract

The growing need to supplement the depletion of conventional energy resources has placed an impetus on the electrical power industry to provide new avenues for alternative energy resources. This study presents a soft switched [zero voltage switching (ZVS)-pulse width modulation (PWM)] interleaved flyback converter with an average current mode control designed for remote power solutions. The flyback DC–DC converter, a popular choice for low-power DC applications that requires an electrical isolation, is being considered in this study due to its simplicity, cost and lesser magnetic components. The lower energy efficiency which is a drawback in flyback converters is overcome using the soft-switching technique. The switching losses and conduction losses are minimised using the ZVS-PWM technique. Also, interleaving of the DC–DC converters is being used to reduce the size of the magnetic components and further improve the converter efficiency. The effectiveness of the converter is verified using the results obtained through MATLAB/Simulink. A prototype model is also developed to validate this system and is tested using dsPIC30F4011 processor. The experimental results prove the viability of the converter. Both simulation and experimental results show high efficiency and good output voltage regulation for a wide range of load and input variations.