H_∞滑模鲁棒励磁控制器设计

DESIGN FOR H_∞SLIDING MODE ROBUST EXCITATION CONTROLLER

电力系统的鲁棒励磁控制模型具有非线性和不确定性等特点。并且,其不确定性不满足匹配条件。该文结合反馈线性化、H干扰抑制和滑模变结构控制,利用反馈线性化技术, 将鲁棒励磁控制模型转化为线性不确定模型;利用H干扰抑制技术, 获得了具有抑制不满足匹配条件干扰能力的动态滑动模态;利用滑模变结构控制,获得了具有完全抑制满足匹配条件干扰的控制律。并设计了H滑模鲁棒励磁控制器。仿真结果表明:文中所设计的控制器能够有效地稳定电力系统。

The robust excitation control model of powersystem has nonlinear and uncertain properties, and theuncertainty doesnt satisfy the matching condition. Integrating feedback linearization, H disturbance attenuation and sliding mode variable structure control, this paper proposes the design procedure of H sliding mode robust excitation controller.Firstly, robust excitation control model is converted into linear model with uncertainty by applying feedback linearizationtechnology. Then a dynamic sliding mode with the property of attenuating mismatching disturbance is obtained by making use of H technology. Last, the ultimate control law, which canattenuate matching disturbance completely, is acquired byadopting variable structure control technology. The simulations shows that the proposed controller can stabilize power system effectively.