智能型高压变频串联谐振试验电源设计  

Design of intelligent high-voltage and variable-frequency power source

作　　者：黄新波[1] 程文飞[1] 张周熊[1] 石杰[1] 赵阳[1] 

机构地区：[1]西安工程大学电子信息学院,陕西西安710048

出　　处：《电力自动化设备》2013年第8期157-161,171,共6页Electric Power Automation Equipment

基　　金：陕西省教育厅产业化培育项目(2010JC08);陕西省科学技术研究发展计划项目(2011KJXX09);西安市科技计划项目产学研合作促进工程(CXY1104)~~

摘　　要：设计了一种智能型高压变频串联谐振试验电源发生装置，利用LC串联谐振原理，DSP核心板输出PWM波和SPWM波分别控制Buck电路和逆变电路；通过智能矫正算法和PI算法实现智能调频调功；通过对励磁变压器二次侧电压采样以及FFT运算实现自动搜寻谐振点：通过调节装置外部电抗器和电容器的参数改变谐振点频率．从而改变电源电压的输出幅值。该智能型高压变频串联谐振试验电源发生装置可在30～300Hz范围内连续调频，输出电压等级达到高压、超高压级别。An intelligent high-voltage and variable-frequency power source for insulation test is designed, which,applying the principle of LC series resonance,outputs PWM wave and SPWM wave by its DSP core board to control Buck circuit and inverter circuit respectively,adopts the intelligent correction algorithm and PI algorithm to modulate frequency and power,samples the secondary-side voltage of excitation transformer to automatically search the resonant point by the FFT operation,and adjusts the parameters of external reactor and capacitor to change the frequency of resonance point for modulating the amplitude of output voltage. The designed device outputs high/extra-high voltage with continuously variable frequency from 30Hz to 300Hz.

关 键 词：电源 设计 谐振 SPWM PWM 调频 逆变器 

分 类 号：TN77[电子电信—电路与系统]