-70kV高压低纹波电源的电路特性分析

Analysis of Circuit Characteristics of-70kV High-voltage Low-ripple Power Supply

首先,介绍了高压电源的基本工作原理,提出了倍压整流电路的等效电路。然后,讨论了谐振元件参数选择与低纹波实现之间的关联,指出变压器原边峰值电流与谐振电感参数是决定电路性能的重要因素。最后,推导了可用于实现输出电压低纹波的计算公式,给出满足设计需求的低纹波高压电源主要元器件参数,并且给出了仿真与实验结果。所提方法可精确反映这种高压电源的电路特性。

The basic operation principle for the high-voltage power supply is introduced at first,and the equivalent circuit of the voltage doubling rectifier is deduced.Then,the relationship between the selection of resonant component parameters and the realization of low-ripple is discussed,and it is pointed out that the primary-side peak current of transformer and the parameter of resonant inductance are the important factors that determine the circuit performance.Finally,the analytic expressions for realizing the low-ripple of output voltage are deduced,and a design method for the high-voltage low-ripple power supply which has appropriate components is formulated,and simulation and experimental results were also given.The proposed design method can accurately reflect the circuit characteristics of the high-voltage power supply.