| 引用本文: | 刘 牛,周荔丹,姚 钢,李立学,郑益慧,王艳华.基于鲁棒H∞控制的动态电压恢复器[J].电力自动化设备,2012,32(1): |
| LIU Niu,ZHOU Lidan,YAO Gang,LI Lixue,ZHENG Yihui,WANG Yanhua.Dynamic voltage restorer based on robust H∞ controller[J].Electric Power Automation Equipment,2012,32(1): |
|
| 摘要: |
| 针对系统鲁棒性要求，提出了H∞双闭环反馈控制器设计方法。在简要介绍动态电压恢复器（DVR）原理的基础上，根据系统数学模型，写出标称对象的状态方程，根据系统性能要求，选定混合灵敏度优化设计中要求的3个加权函数，进而求得系统的广义被控对象的状态空间实现。通过求解2个代数Riccati方程得到H∞控制器。该控制器用于DVR系统控制，不但可以保证系统的稳定性，而且对负荷和系统参数的变化具有一定的抗干扰能力。仿真结果验证了控制器设计的正确性。 |
| 关键词: DVR 电压跌落 鲁棒性 H∞ 反馈 控制器 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| Dynamic voltage restorer based on robust H∞ controller |
|
LIU Niu1, ZHOU Lidan1, YAO Gang1, LI Lixue2, ZHENG Yihui2, WANG Yanhua3
|
|
1.Key Laboratory of Control of Power Transmission and Conversion，Ministry of Education，Department of Electrical Engineering，Shanghai Jiao Tong University，Shanghai 200240，China;2.Center of Electrical & Electronic Technology，Shanghai Jiao Tong University，Shanghai 200240，China;3.Siping Power Supply Company，Jilin Electric Power Co.，Ltd.，Siping 136000，China
|
| Abstract: |
| A design of dual loop-feedback H∞ controller is proposed according to the requirement for system robustness. The DVR（Dynamic Voltage Restorer） principle is briefly introduced and the state equations of nominal object are formulated based on the mathematical system model. Three weighting functions required in the mixed-sensitivity optimization design are selected according to the requirements for system performance to obtain the generalized state space realization of the controlled object. The H∞ controller is obtained by solving two algebraic Riccati equations，which is applied in DVR to guarantee the system stability and to have some immunity from the changes of loads and system parameters. Simulative results verify its validity. |
| Key words: DVR voltage sag robustness H∞ feedback controllers |
