引用本文:张月明,李俊,刘嘉,等.PIλ 电流内环控制器实现的链式APF在外超导磁体中的应用[J].电力系统保护与控制,2015,43(1):122-128.
ZHANG Yueming,LI Jun,LIU Jia,et al.PIλ current loop controller for chain APF application of the outer superconducting magnet[J].Power System Protection and Control,2015,43(1):122-128
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PIλ 电流内环控制器实现的链式APF在外超导磁体中的应用
张月明1, 李俊1, 刘嘉1, 刘小宁2, 张敏敏1, 沈美杰1, 周海峰1
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
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。
关键词:  超导磁体电源  谐波抑制  有源滤波  分数阶PI
DOI:10.7667/j.issn.1674-3415.2015.01.021
分类号:
基金项目:国家自然科学基金资助项目(50977086)
PIλ current loop controller for chain APF application of the outer superconducting magnet
ZHANG Yueming1, LI Jun1, LIU Jia1, LIU Xiaoning2, ZHANG Minmin1, SHEN Meijie1, ZHOU Haifeng1
1.School of Automation and Electrical Engineering, Nanjing University of Technology, Nanjing 211816, China;2.High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
Abstract:
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.
Key words:  superconducting magnet power supply  harmonic suppression  active filtering  fractional PI
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