Research On Lossless Snubber Soft Switching DC Converter

Power is an electronic device to provide energy to the device, electronic equipment can not do without power,so power in the electronic device has a very important role. Working of Electronic equipment would like to get a good reliability, there need to have a high quality power supply, so the power requirements of electronic devices become increasingly higher.With the rapid development of power electronics, PWM DC-DC converter applications are increasingly widespread. Current high efficiency, miniaturization, high performance and lightweight of converter, has gradually become a goal pursued by all kinds of PWM DC-DC converters. Soft-switching technology is the core technology in the power electronic devices in particular to the DC conversion device to high power density, high frequency .Soft switching technology has broad application prospects and become a hot research in recent years, especially the lossless soft switching technology s a soft-switch technology trends in recent years. The article studies lossless buffer soft-switching technology, adding a lossless buffer soft-switching network to the designed new DC-DC converter, to achieve soft switching of the main switch.This paper introduces the research background, status and significance of modern switching power in the first place, reviews the type of converter and the principle of work at this stage, analyzes the advantages and disadvantages of each converter. This article describes the background of the soft-switch, advantages and disadvantages of different types of soft-switch. Information learned through research Lossless Soft Switching technology is the development trend of soft-switching, and use it as research. Article bases on the traditional Boost DC-DC converter to improve it, designs a new type of DC-DC converter. This paper analyzes the new DC-DC converter topology, operation principle and the basic relationship between circuit parameters and gives main parameters of the theory waveform. This article will add Lossless Soft Switching unit designed to the new DC-DC converters, to achieve the main switch Soft opening and soft turn-off, and analyze detailed operation principle of the lossless snubber soft-switching DC-DC converter. Finally, the article verifies the theoretical analysis through the simulation software for new DC-DC converter and lossless snubber soft switching DC-DC converter to simulate. Experimental results show that the design of new DC-DC converter improves efficiency, with higher voltage transformation ratio than the traditional DC-DC converter. Lossless snubber soft switching DC-DC converter designed reduces the switching loss and improves the work efficiency and improves the working environment of the switch.