Abstract
A ZVS and ZCS buck boost converter is presented for PV panel applications. The salient points are that all the switching devices are under zero-current switching during turn-on and zero-voltage switching during turn-off. The active switches in the converter undergo zero-capacitive turn-on losses unlike switches in other soft-switched topologies. The switches do not experience any over voltage/over current stress proportional to load as in resonant converters. This soft-switching technique can also be applied to other classical switched mode power converters. A detailed analysis of the converter under steady state is discussed and simulation results obtained are presented.
Highlights
The increasing demand for renewable energy has increased significantly over the years because of shortage of fossil fuels and greenhouse effect
The dynamic performance is improved. This frequency elevation is responsible for the growing importance of pulse-width modulation on the one hand and for the use of resonance on the other hand. Another important trend resides in reduction of voltage and current stresses on the semiconductors and limitation of the conducted and radiated noise generated by the converters due large di/dt and du/dt
This paper presents the work of the new buck-boost converter that provides zerovoltage turn-on and zero current turn-off
Summary
The increasing demand for renewable energy has increased significantly over the years because of shortage of fossil fuels and greenhouse effect. This is a switched-mode power supply with a similar circuit topology to the boost converter and the buck converter. The advances in semiconductor fabrication technology have made it possible to significantly improve voltage and current capabilities and the switching speed.
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