摘要
超级电容/电池(SC/BA)通常用于可再生能源波动功率的抑制,其一般通过双向DC/DC变换器接入直流系统,并控制直流母线电压的稳定。首先建立了一种新型DC/DC变换器的多胞模型,将SC/BA输入电压波动以及负载不确定性纳入鲁棒模型设计;进而采用基于线性矩阵不等式方法的最优线性二次型控制,设计了系统鲁棒最优二次型控制器。实验结果表明,相比传统比例积分(PI)控制,所提控制方法具有良好的鲁棒性,可以保证宽范围输入电压工况下DC/DC变换器输出电压稳定运行,且具备良好的动态性能。
The supercapacitor/battery(SC/BA)is generally used to filter the intermittent power of the renewable energy.It is generally connected to the DC system through a bidirectional DC/DC converter,and the stability of the DC bus voltage is controlled.A polytopic model of the new DC/DC converter is established at first,SC/BA input voltage fluctuation and load uncertainty are incorporated into the robust model design.Then,the optimal linear quadratic control based on the linear matrix inequality method is used to design a robust optimal quadratic controller for the system.The experimental results show that the proposed control method has good robustness compared with the traditional proportional integral(PI)control.The stable operation of DC/DC converter output voltage under wide range of input voltage conditions and good dynamic performance are guaranteed.
作者
胡伟
杨帆
彭勇兵
全相军
HU Weil;YANG Fan;PENG Yong-bing;QUAN Xiang-jun(Electric Power Research Institute,State Grid Hubei Electric Power Company,Wuhan 430077,China;不详)
出处
《电力电子技术》
北大核心
2023年第3期119-121,共3页
Power Electronics
基金
国网湖北省电力有限公司科技项目(521532200020)。
