Waveform Control of Multi-Pulse Flat-Top High Magnetic Field Based on Pulsed Generator System

被引：8
|
作者：
Xu, Yun [1 ]
Li, Peichen [1 ]
Lu, Chao [1 ]
He, Xiaolong [1 ]
Li, Dake [1 ]
Fang, Yunchao [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2020年 / 30卷 / 04期
基金：
国家重点研发计划;
关键词：
High magnetic field; pulsed generator; generalized model predictive control (GPC); identification of resistance parameters; waveform control; GENERALIZED PREDICTIVE CONTROL; DESIGN; LOOP;
D O I：
10.1109/TASC.2020.2977008
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Multi-pulse flat-top high magnetic field (MFHMF) can promote neutron diffraction, terahertz source and other research fields. Due to the limited heat dissipation capability of pulsed magnet, the magnet resistance gradually increases, which leads to inconsistencies of the waveforms and limits the quantity of flat-top magnetic field waveforms. For the sake of getting the MFHMF with high consistency, a pulsed generator-rectifier system is used as the power supply by analyzing the impedance characteristic of multi-pulse magnet in this paper. Based on the accurate external characteristics modeling of power supply, a control method of generalized model predictive control (GPC) is proposed. In this GPC method, a 3-level least square method (LSM) is designed to calculate the real-time magnet resistance, and the influence of disturbance by the magnetic resistance is eliminated by the controller. Finally, the results based on MATLAB/ Simulink simulation verified the feasibility and validity of the waveform control method of MFHMF.
引用
收藏
页数：5
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