1、 目录目录 摘要.1 Abstract.2 1 引言3 1.1 本设计的目的和意义.3 1.2 大功率充电电源的研究现状.3 1.2.1 现有充电方式的比较.3 1.2.1.1 恒压充电.3 1.2.1.2 恒流充电.4 1.2.1.3 恒压恒流充电.4 1.2.2 现有充电电源的比较.5 1.2.2.1 线性电源.5 1.2.2.2 相控电源.5 1.2.2.3 开光电源.6 2 系统方案的设计.7 2.1 基本变换器设计.8 2.2 功率开关器件的选择8 2.3 谐振电路的选择9 2.4 其他电路的分析10 3 主电路的计算分析.11 3.1 输入滤波电容的设计11 3.2 输入整流二极管
2、的选择11 3.3 IGBT 的选择12 3.4 IGBT 的保护电路14 3.5 开关频率的设计15 3.6 高频变压器的设计15 3.7 输出整流二极管的选择16 3.8 输出滤波电感的设计17 3.9 输出滤波电容的设计17 4 结束语.19 4.1 全文小结19 4.2 目前存在的不足和今后的工作19 参考文献.20 致谢21 附录22 1 摘要摘要 充电电源在现实生活中的应用非常广泛,其发展势头迅猛。大功率充电直 流电源在冶金、化工及科研领域的应用,更是以一个惊人的速度在发展。随着电 力电子技术和自动控制技术的发展,尤其是 IGBT 等新型高频开关器件的出现, 使得开关的速度大大提高
3、,关断时间加快,存储时间大大缩短,这样大大提高了 开关频率,减少了功率变换器中的变压器体积和重量,以及电感、电容等无源器 件的容量,大大提高了功率密度,使得充电电源具有高效化,小型化的特点,得 到国内外的广泛关注。因此,本文针对目前比较热门的大功率直流充电电源的主 电路进行研究设计。本电源采用移相控制 ZVS PWM DC/DC 全桥变换器拓扑。电源 主要由输入滤波电路、三相整流电路、三相全桥逆变电路、高频变压器、谐振电 感和隔直电容、输出整流滤波电路等组成。 关键词关键词:IGBT;PWM;整流电路;三相全桥逆变电路 2 Abstract Charging power supply is u
4、sed very extensive in real life, and it is booming. The application of high-power charging DC power is at an alarming rate in development in metallurgy, chemical engineering and scientific research fields. Along with the development of the power electronic technology and automatic control technology
5、, especially the appearance of the new high frequency switching devices like IGBT etc, which made the speed of the swith greatly improved, shut off quickly, and the storage time shorten greatly, so it greatly improved switch frequency, reduced the transformers volume and weight of the power converte
6、r, and the passive componentss like inductance and capacitance, which improved the capacity of the power density greatly ,made charging power supply having the characteristics of high-effective, miniaturization, and attracted the attention of the domestic and international. Therefore, this paper is in view of the main circuit of the high power DC charging power supply which is popular at present to study and design. The power adopts phase shifting control ZVS PWM DC/DC bridge converter topolo