【作者】 刘保颂；

【导师】 杜少武；

【作者基本信息】 合肥工业大学 ， 电力电子与电力传动， 2004， 硕士

【摘要】 随着电力电子技术的发展，对大功率、高性能的开关电源地要求越来越高。功率因数校正(PFC)技术和软开关PWM技术都是当前电力电子技术研究的热点问题。PFC技术和软开关PWM技术作为一项成熟的技术，近些年来已经在小功率开关电源中得到普遍的应用，在大功率开关电源中应用仍处在研究与开发阶段。 本文根据用户的要求研究设计了一种大功率高性能开关电源。该开关电源分为前级和后级，前级为采用BOOST结构的单相有源功率因数校正电路，后级为采用移相控制软开关技术的全桥变换器。 论文在详细分析和研究单相有源功率因数校正原理的基础上，设计出大功率有源功率因数校正电路，并给出电路中升压电感的设计方法；设计出了大功率移相控制全桥软开关PWM DC／DC变换器，详细的研究了实现ZVS的条件。最后研制出了实验样机，并给出了实验样机的功率因数校正电路和移相全桥软开关变换电路的实验波形。更多还原

【Abstract】 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 and soft-switching PWM technique are both widely researched. They have been prevalently applied in low power SMPS, and are still under research for applying in high power SMPS.A high power and high performance SMPS is designed in this paper to meet the demand of its consumer. It consists of forward stage and backward stage, of which the forward stage is a single-phase Boost Power Factor Correction circuit using IC UC3854. The backward stage main circuit is a Full-bridge converter using Phase-shifting Control Soft-switching technique.Based on the detailed analysis of the principle of single-phase active PFC, the high power active PFC circuit is designed, and the method of designing boost inductor is also given in the paper. A high power phase-shifted-control soft-switching full-bridge converter is designed, and the condition of achieving ZVS (Zero Voltage Switching) is studied in detail. Finally, the waves of a prototype are given.更多还原