The Research And Simulation Of Power Factor Correction Technology In Switch Power

With the development of Power Electronics,the technology of Switching Mode Power Supply(SMPS) is gradually being perfect.However,there is no end to the demand for a high power, high performance power supply. Nowadays, Power Factor Correction (PFC) technique is widely researched. They have been prevalently applied in low power SMPS, and are still under research for applying in high power SMPS.This thesis describes the main characters and development of power factor correction(PFC) technology. Its investigative necessity and importance are clarified. The basic theory for all sorts of power factor correction is analyzed, and the topology and control circuit are studied.The principle and application of zero current switching boost PFC circuit are given. By introducing thedevelopment of AC/DC module with PFC the key techniques of the module are stressed on the engineering design. Some problems are resolved such as the module is so small that spread the hot difficulty. The thesis also analyzes the average current type of PFC.In the thesis the hot problems and development of PFC technology are analyzed farther.It establishes good foundations for future research.