摘要
LLC谐振变换器采用PI控制器对环路补偿时存在带宽设计受限、动态性能不佳、抗扰能力较差问题。本文将自抗扰控制(ADRC)等效为二自由度系统,提出利用PID与ADRC之间的等效关系,通过频域法对ADRC参数进行预设计,并采用粒子群算法(PSO)对ADRC参数进行优化,通过多次迭代得到ADRC参数最优解。最后设计并制作一台额定功率为300 W的样机,仿真和实验证明,ADRC控制策略有效解决了传统PID控制器在负载扰动较大情况下系统的调节时间较长问题,加载过程调节时间缩短了3.4 ms,减载过程调节时间缩短了2.5 ms,所设计控制器有效提高了LLC变换器的动态性能。
LLC resonant converter has the advantages of high efficiency and high power density. When the LLC resonant converter uses PI controller to compensate the loop, there are some problems, such as limited bandwidth design, poor dynamic performance and poor anti-interference ability. In this paper, the active disturbance rejection control(ADRC) is equivalent to two degree of freedom system. It is proposed to use the equivalent relationship between PID and ADRC, design the parameters of ADRC by frequency domain method, and optimize the parameters of ADRC by particle swarm optimization(PSO) algorithm. Finally, a prototype with rated power of 300 W was designed and manufactured. Simulation and experiment show that ADRC control strategy can effectively solve the problem of long regulation time of traditional PID controller in the case of large load disturbance. The adjustment time in the loading process is shortened by 3.4 ms, and the adjustment time in the unloading process is shortened by 2.5 ms.The designed controller effectively improves the dynamic performance of LLC converter.
作者
陈宗祥
张武林
陈克难
刘康
李松
CHEN Zong-xiang;ZHANG Wu-lin;CHEN Ke-nan;LIU Kang;LI Song(Schooi of Electricci and Information Engineering,Anhui University of Technology,Ma'anshan 243032,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2022年第8期130-138,共9页
Electric Machines and Control
基金
国家自然科学基金(61873002)。
关键词
LLC谐振变换器
二自由度
自抗扰控制
粒子群算法
PID控制
动态性能
LLC resonant converter
two degree of freedom
active disturbance rejection control
particle swarm optimization
PID control
dynamic performance
作者简介
通信作者:陈宗祥(1975-),男,博士,副教授,研究方向为电力电子与电力传动;张武林(1994-),男,硕士研究生,研究方向为功率变换器及其控制;陈克难(1995-),男,硕士研究生,研究方向为电力电子建模与控制策略;刘康(1997-),男,硕士研究生,研究方向为功率变换器及其控制;李松(1995-),男,硕士研究生,研究方向为功率变换器及其控制。
