| 引用本文: | 谷志锋,朱长青,邵天章,刘璞.全状态EKF估计的最优反演鲁棒励磁控制设计[J].电力系统保护与控制,2013,41(19):118-125.[点击复制] |
| GU Zhi-feng,ZHU Chang-qing,SHAO Tian-zhang,LIU Pu.Design of the optimum back-stepping nonlinear robust excitation control based on the all state parameters EKF estimate[J].Power System Protection and Control,2013,41(19):118-125[点击复制] |
|
| 摘要: |
| 针对传统反演励磁控制存在单纯以系统稳定为目标，端电压控制精度难以保证和最优控制缺乏的不足，采用扩展卡尔曼滤波(EKF)估测和时刻计算运行点的方法，解决了端电压控制精度问题，采用反演设计、直接反馈线性化和最优控制相结合的方法，解决了反演鲁棒最优控制问题。具体励磁系统的仿真结果表明：EKF能够对状态参数时刻估计；存在不确定性和外部干扰时，最优反演励磁方法具有控制状态参数收敛速度和消除端电压偏移的能力。 |
| 关键词: 不确定非线性系统 状态估计 EKF 鲁棒最优控制 端电压控制 干扰抑制 |
| DOI：10.7667/j.issn.1674-3415.2013.19.018 |
|
| 基金项目:军械工程学院重点院基金项目（YJJ10031， YJJXM12046） |
|
| Design of the optimum back-stepping nonlinear robust excitation control based on the all state parameters EKF estimate |
| GU Zhi-feng,ZHU Chang-qing,SHAO Tian-zhang,LIU Pu |
| () |
| Abstract: |
| In the traditional back-stepping excitation robust control, the main objective is the stability of the system, the control accuracy of the terminal voltage can’t be guaranteed and the optimum control of the state parameters isn’t considered. Through estimating the state parameter values of the synchronous generator by EKF and calculating the operating points of excitation system rapidly, the control accuracy of the terminal voltage of the synchronous generator is improved. Through combining the back-stepping, the direct feedback linearization and the optimum control, the optimum back-stepping robust control is realized. Simulation results of the certain excitation system show that the state parameters of the synchronous generator can be estimated by EKF, optimum back-stepping can not only eliminate the problem of the terminal voltage deviation, but also can control the convergence rate of the state parameters of the synchronous generator. |
| Key words: uncertain nonlinear system state estimate EKF robust optimal control terminal voltage control interference suppression |
