PI^λ电流内环控制器实现的链式APF在外超导磁体中的应用  

PI^λ current loop controller for chain APF application of the outer superconducting magnet

作　　者：张月明[1] 李俊[1] 刘嘉[1] 刘小宁[2] 张敏敏[1] 沈美杰 周海峰[1] 

机构地区：[1]南京工业大学自动化与电气工程学院,江苏南京211816 [2]中国科学院强磁场科学中心,安徽合肥230031

出　　处：《电力系统保护与控制》2015年第1期122-128,共7页Power System Protection and Control

基　　金：国家自然科学基金资助项目(50977086)~~

摘　　要：稳态强磁场超导磁体电源采用双反星型可控硅整流技术方案,是一种典型的非线性负载,运行时会带来较大的无功冲击及谐波污染。针对科学装置的链式高压有源电力滤波方案规划,结合有源滤波系统的非线性特性,提出一种采用分数阶PI控制器代替普通PI控制器实现的电流内环解耦方法,基于改进的Oustaloup算法,实现分数阶微积分的求解。通过仿真与实验对比分析了分数阶PI与常规PI控制器的运行效果。经仿真与实验表明,采用的分数阶PI电流内环控制器是正确的,且具有一定的参考价值。Superconducting magnet power of stabilized intense magnetic fields adopts double-inverse-star silicon controlled rectifying technology; it is a typical non-linear load, which will bring about larger idle impact and harmonic pollution at runtime. Aiming at the program planning for chained high-voltage active power filter system in scientific devices, combing with the non-linear characteristics of active power filter system, a method adopting the fractional-order PI controller instead of ordinary PI controller is proposed to realize inner loop decoupling, and based on improved Oustaloup algorithm to achieve solution of fractional calculus. Through simulation and experimental comparison, the running effect of fractional-order PI controller and conventional PI controller is analyzed. According to simulation and experiment, this fractional-order PI controller is correct, and has a certain value for reference.

关 键 词：超导磁体电源 谐波抑制 有源滤波 分数阶PI 

分 类 号：TM761[电气工程—电力系统及自动化]