船舶无刷发电机励磁控制系统的数字仿真

摘要

It is found that excitation control system of brushless generator can improve voltage stability of marine power system during performance optimization control research of marine generator.The stability of power grid is affected because of load disturbance on electric transmission line.In order to improve power grid's performance,the paper modeled each module by computer based on its mathematical model,then adopted phase-compounding with PID control strategy that is common in ship to simulate close loop excitation control system with the controller as a core.Digital simulation set parameters according to real system,and disturbing and faulty work circumstances can be simulated.Simulation results show the dynamic performance and fault characteristics of excitation control system of marine brushless generator,which testifies the validity of simulation models and technique,so that the digital simulation can be used to design,debug and evaluate marine excitation control system.%在船舶发电机性能优化控制问题的研究中,无刷发电机励磁控制系统能改善船舶电力系统的电压稳定性.由于输电线路受负载扰动,影响电网的稳定性.为了提高电网性能,在各单元数学模型的基础上进行分块数字建模,采用船舶常用的相复励与PID结合的控制策略,用控制器为核心的闭环励磁控制模型建立仿真系统.根据实际系统设置参数,仿真扰动和故障工况.仿真结果反映了船舶无刷发电机励磁控制系统的动态性能和故障特征,证明了仿真模型和方法的正确性,可用于船舶励磁控制系统的设计调试和性能评估.