内燃动车柴油发电机的励磁系统模糊滑膜控制研究

Research on Fuzzy Sliding Mode Control of Excitation System of Diesel Generator in DMU

针对发电机励磁系统运行时的动静态性能要求,分析了内燃动车柴油发电机的控制特点,提出一种模糊滑模复合控制策略。利用滑模控制对扰动与参数不敏感的特性,可有效解决发电机励磁控制的鲁棒性问题;同时采用模糊控制,根据输出变化量和变化率在同步发电机运行过程中实现实时调整滑膜控制器的参数。仿真结果表明,与单纯的滑模控制相比,模糊滑膜控制器使发电机的端电压更稳定,具有较好的静态和动态性能。

Aiming at the dynamic and static performance requirements of the generator excitation system during operation,the control characteristics of the diesel generator in DMU are analyzed,and a fuzzy sliding mode compound control strategy is proposed.Sliding mode control is not sensitive to disturbances and parameters,and can effectively solve the robustness problem of generator excitation control.At the same time,fuzzy control is adopted to implement real-time adjustment of the sliding mode controller during the operation of synchronous generators according to the output change and the rate of change parameters.The simulation results show that compared with pure sliding mode control,the fuzzy sliding mode controller makes the generator terminal voltage more stable and has better static and dynamic performance.