Power Integration Of 575W Power Supply For Lighting

Power supply of lighting is a typical of power electronics system, which includes almost all basic technology and fundamental knowledge such as the topology of circuit, the strategy and technique of control and so on. The purpose of researching the power supply of lighting is to minish the size, reduce the cost and EMI, improve power density, realize modularization and standardization, improve reliability and stability of power supply productions.In this paper, circuit topology of PFC converter, DC/DC and DC/AC converter had been selected with studying of 575W power supply; these modules had been tested and analyzed; dynamic process of BUCK switch converter had been analyzed and different switch components had been selected.At the beginning of the thesis, the significance of this project is discussed and aim of the work is also expatiated clearly. In chapter I, introducing the concept, sort, necessity, and background and studying content of power electronics system.In chapter II, selecting the circuit topology of PFC stage, DC/DC and DC/AC converters adapt to 575W power supply of lighting.In chapter III, testing and analyzing these modules. BUCK switch converter is analyzed dynamically and different switch components are selected, waste formulas of switch components are presented.At the end of the paper, some conclusions are made and unsolved problem are presented.