摘要
针对一般的参数反馈型非线性系统提出了一种扩展自适应逆推方法。该方法不仅保留系统的非线性特性和对未知参数的实时在线估计,而且突破了经典的确定性等价性原理。将该方法应用到含有未知参数带有静态无功补偿器 (SVC)的单机无穷大系统。将这种新自适应机制引入电力系统,得到了带有SVC单机无穷大系统的自适应控制律。仿真结果表明,该方法在提高系统稳定性和参数估计方面优于传统的逆推方法,为工程应用提供了一种有效的选择。另外, 该文中的算法可以应用到其他控制系统。
A new extended adaptive backstepping algorithm for general nonlinear systems in parametric feedback form is proposed. The method preserves useful nonlinearities and the real-time estimation of uncertainty parameter, and does not follow the classical certainty equivalence principle. Then the proposed method is applied to nonlinear adaptive control of Static VAR Compensator （SVC） of a single-machine infinitebus system containing some unknown parameters. This novel adaptation mechanism is introduced into power systems, and a novel adaptive control law for this SMIB system is presented.The simulation results demonstrate that the proposed method is better than the design based on classical adaptive backstepping in terms of properties of stability and parameter estimation.Hence, it will be an alternative to practice engineering and applications. In addition, this algorithm is applicable to other control systems.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2006年第10期7-11,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(60574013,60274009)
高等学校博士学科点专项科研基金项目(20020145007)
辽宁省自然科学基金项目(20032020)
关键词
电力系统
静态无功补偿器
非线性控制
扩展自适应逆推
power systems
static VAR compensator（SVC）
nonlinear control
extended adaptive backstepping
