摘要
合肥先进光源(Hefei Advanced Light Facility,HALF)是基于衍射极限储存环的第四代同步辐射光源,其电子束能量为2.2 GeV,发射度设计目标小于100 pm·rad。由于合肥先进光源需要上千台磁铁稳流电源,磁铁稳流电源要求长期稳定度在5×10^(−5)以内,且在改变电流工作点时应避免阶跃响应超调,实现平滑过渡,采用常规比例-积分-微分控制器(Proportional-Integral-Derivative Controller,PID)参数整定的经验凑试法需要耗费大量时间。针对以上要求,设计一种基于多项式回归和遗传算法的PI控制器参数自整定算法,并在磁铁稳流电源样机上完成开发和验证。测试结果表明,其主要技术指标满足使用要求,调试效率显著提高。
[Background]The Hefei Advanced Light Facility(HALF)is a fourth-generation synchrotron radiation source based on a diffraction-limited storage ring.Its electron beam energy is 2.2 GeV,with an emittance target of less than 100 pm·rad which requires stability within 5×10^(−5)for the magnet steady-state power supply and reduces overshoot in step response when changing the current operating point.Due to the need for over a thousand magnet steady-state power supplies at HALF,the empirical tuning method using conventional proportional-integralderivative(PID)controller parameters requires a significant amount of time.[Purpose]This study aims to design a PID controller parameter auto-tuning algorithm for the magnet steady-state power supply of HALF,to achieve optimal PI parameters.[Methods]Based on polynomial regression and genetic algorithms,an auto-tuning algorithm for PI controller parameters was developed for the magnet steady-state power supply controller.Then,BUCK circuit structure was adopted for the magnetic steady current power supply,and the simulation and physical experiment verification of the prototype of the magnetic steady current power supply were carried out.Finally,this algorithm was integrated with the supervisory computer system to record various data points.Development and testing of this algorithm were conducted on the magnet steady-state power supply to verify the stability of the output current.[Results]The test results of the power supply step response and output current stability show that the step response achieves a smooth transition,and the rising speed is increased several times.The output current stability is within 1×10^(−5).The key technical indicators meet the operation requirements and significantly improve the debugging efficiency.[Conclusions]The algorithm proposed in this paper provides an effective method for improving the debugging efficiency of large-scale power supplies in the future.
作者
邓超
胡保进
周梁缘
陈一飞
张海燕
高辉
DENG Chao;HU Baojin;ZHOU Liangyuan;CHEN Yifei;ZHANG Haiyan;GAO Hui(National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230029,China)
出处
《核技术》
北大核心
2025年第5期127-134,共8页
Nuclear Techniques
基金
超级陶璨装置关键技术攻关项目
合肥先进光源项目资助。
关键词
合肥先进光源
磁铁稳流电源
多项式回归
遗传算法
Hefei Advanced Light Facility
Magnet steady-state power supply
Polynomial regression
Genetic algorithm
