摘要
针对直流微电网中双向DC-DC变换器输出端口电压受扰不稳定的问题,提出一种含已知扰动模型描述和未知扰动二阶描述协同补偿的线性自抗扰控制策略,以减小线性扩张状态观测的观测负担、提高其观测精度,并进一步改善自抗扰控制系统的抗扰性能。通过对系统性能的理论分析,说明了该控制策略能改善电压受扰波动的原因。最后,通过仿真和实验对比说明改进型自抗扰控制系统在抗扰性、鲁棒性上均优于电压外环电流内环的PI控制以及传统自抗扰控制。
Aiming at the problem of voltage instability at the output port of Bi-directional DC-DC Converter in DC microgrid,a linear active disturbance rejection control strategy with known disturbance model description and unknown disturbance second-order description coordinated compensation is proposed to reduce the observation burden of linear expansion state observation and improve its observation accuracy,And further improves the anti-interference performance of the auto disturbance rejection control system.Through theoretical analysis of the system performance,the reason why this control strategy can improve voltage disturbance fluctuations is explained.Finally,through simulation and experimental comparison,it is shown that the improved ADR control system is better than the PI control of the outer loop of voltage and the inner loop of current and the traditional ADR control in terms of immunity and robustness.
作者
周雪松
景亚楠
赵浛宇
赵明
王博
杨清
Zhou Xuesong;Jing Ya’nan;Zhao Hanyu;Zhao Ming;Wang Bo;Yang Qing(Tianjin University of Technology,Tianjin Key Laboratory of New Energy Power Conversion,Transmission and Intelligent Control,Tianjin 300384,China;Chengde Dianzhishang Energy Saving Technology Co.,Ltd.,Chengde 067000,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2024年第7期323-332,共10页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51877152)
天津市科技特派员项目(22YDTPJC00340)
天津市研究生科研创新项目(2022SKY180)
天津理工大学校级研究生科研创新实践项目(YJ2225)。
关键词
微电网
DC-DC变换器
抗扰
自抗扰控制
模型补偿
microgrids
DC-DC converters
disturbance rejection
active disturbance rejection control
model compensation
