船舶发电机分散励磁鲁棒控制器设计

Robust controller design of decentralized excitation of ship generator

建立船舶柴油机发电机组的数学模型,明确了模型中各干扰项的物理意义,将发电机组数学模型线性化后,增广为广义受控系统,应用H∞控制理论,设计了船舶电力系统发电机的鲁棒分散励磁控制器,并应用线性矩阵不等式方法求解该控制器。在仿真试验中,比较了传统的电力系统稳定(PSS)控制器和分散励磁鲁棒控制器的控制效果,结果表明后者具有更好的抗干扰能力,提高了船舶电力系统的稳定性。

Taking ship electrical power system as a example, Roust H∞ control problem of uncertain system is studied, the mathematic model of generator group is illustrated, in which all kinds of interferences on model have specific physic meaning, After lineaxizing the mathematic model of diesel engine set and extending it into a generalized controllable system, H∞ control theory is applied to design decentralized excitation robust controller of ship multi-generator electrical power system, then linear matrix inequality （LMI） is adopted to resolve the controller. In simulation experiment, the control effect of traditional power system stability controller and decentralized excitation robust controller are compared with each other. The simulation results show that the latter has stronger anti-interfere ability and enhance the stability of ship electrical power system.