一种低漂移对称大功率高压直流变换器的设计

Design of Symmetrical High Power and High Voltage DC Converter With Lower Drift Features

在UPS电源或。DC/AC变换器设计中,需要正负对称的直流高压,该电压经逆变器后获得50 Hz(或其他频率)的正弦电压。为保证负载和变换器本身可靠工作,要求输出交流电压的直流分量足够小,因此获得高度平衡对称的直流高压是减小直流分量的必要条件。详细介绍了一种对称的大功率高压直流变换器技术方案,它通过对称Boost变换器和脉冲变压器采样反馈技术实现了低漂移、大功率、宽输入范围、输出不平衡度很小的直流高压。详细描述了主要参数的设计方法,最后给出了测试结果。

DC high voltage with symmetrical positive and negtive output must be need in the design of UPS or DC/ AC converter,the high voltage can be converted to sine voltage with 50 Hz or more.DC component of the AC must be small enough for reliability of inductive load and itself, so that a DC/DC converter with high voltage, high power and symmetrical lower drift features is necessary.The scheme of DC/DC converter by using symmetrical Boost topology and pulsing transformer sample method is introuduced.The design methods of key parameters are described, finally the testing resuls are given out.