摘要
大功率可编程直流电流源是一种输出电流脉动波形、脉动幅值和脉动周期可通过编程设定的特种直流电流源。本文设计了大功率可编程直流电流源的原理电路及其参数,分析了电源的工作原理,建立了电源系统的数学模型。针对本电源系统含有典型二阶振荡环节的特点,提出一种基于等效模型的调节器设计方法;针对输出电流单闭环控制快速性与稳定性矛盾突出的问题,提出引入滤波电感电流作为内环的新型双闭环控制模式。开发了基于上位机远程编程控制的22k W双路直流电流源样机,在不同脉动波形、幅值和周期下的实验结果表明,本文提出的电流双闭环控制策略具有更短的调节时间和更高的系统稳定性。
Programmable high power DC current source is such a special source that the ripple waveform,ripple amplitude and period of its output current can be remotely adjusted. The source circuit and its parameter design method were given,the operating principle of the DC current source was analyzed,and the mathematical model was developed. An equivalent model based regulator design method was proposed for a controlled object with a typical second order oscillation element. In order to solve the contradiction between rapidity and stability in the single current-loop control mode,a new double current-loop control mode with an inner loop of filter inductor current control was presented. A prototype of the 22 k W remote-programmable DC current source with dual outputs was developed,and the experiment results under various output currents with different waveform,different amplitude and different period show that the source with the presented double current-loop control strategy is of faster response and higher stability.
出处
《电工电能新技术》
CSCD
北大核心
2016年第4期12-16,55,共6页
Advanced Technology of Electrical Engineering and Energy
基金
陕西省重点学科建设专项基金资助项目(5X1301)
关键词
可编程直流电流源
电流双闭环控制
脉动电流
二阶振荡环节
programmable DC current source
double current-loop control
ripple current
second order oscillation element
