25kV高精度直流负高压源设计  

Design of High Precise DC Negative High Voltage Power Supply with 25 kV Output Voltage

作　　者：赵艳雷[1] 童建忠[1] 齐智平[1] 

机构地区：[1]中国科学院电工研究所

出　　处：《高电压技术》2006年第4期88-90,113,共4页High Voltage Engineering

摘　　要：介绍了一种用于工业分析的高精度直流负高压电源,电源输出电压25 kV,最大输出电流100 mA。电源通过BOOST电路校正功率因数和调节电压,用移相全桥把直流电逆变成高频方波,然后经高频变压器升压后倍压整流得到直流高压。用特殊材料和工艺设计制作的高频高压变压器解决了分布参数影响和绝缘耐压等难题,满足了高频高压和大功率输出的需要。实验运行表明:该装置输入功率因数高、输出电压稳定、纹波系数小。This paper introduces a high precise DC negative high voltage power supply. The output voltage of supply is 25 kV and its maximal output current is 100 mA. The power supply uses BOOST converter for power factor correction and voltage regulation, and it converts DC to HF AC square wave with phase-shifted full bridge. The voltage of the AC square wave is boosted by HF transformer, then the HF high voltage AC square wave is double rectified to DC high voltage output. The HF high voltage transformer, which is designed and manufactured with special material and technique, solves several technical difficulties including influence of distributing parameters and insulation, and meets demands of high frequency, high voltage and high power. The experimental result shows the power supply has high input power factor, stable output voltage and small ripple.

关 键 词：直流高压 功率因数校正 ZVS移相控制 变压器 逆变器 

分 类 号：TM832[电气工程—高电压与绝缘技术]