摘要
针对三相电压型PWM整流器这个强非线性、强耦合、时变的系统,设计了直流电压外环、电流内环的双环控制结构对其进行控制,实践中常用的是传统PID控制器,但是其对系统参数变化相对敏感,控制效果不是很理想。本文提出使用分数阶替代传统PID。与传统PID相比,分数阶PI~λD~μ增加了λ和μ两个可调参数,使控制器设计过程更加灵活,控制效果更加优越。分数阶控制器对时变的被控对象具有较强的鲁棒性。通过仿真和实验比较两种控制器的结果 ,证明分数阶PI~λD~μ控制方案比传统PID控制更适合PWM整流器系统,有更好的鲁棒性,更优的动态和稳态性能,以及更快的响应速度。
Rectifer 3-phase voltage PWM is a strongly non-linear, strong coupling, time-varying object is often designed with two feedback loops, voltage feedback loop and outer loop feedback circuit currents inside and often using traditional PID controller, but the controller confguration parameters change sensitivity, resulting controller is not really ideal. This paper presents a method using fractional controller integrated PIλDμ replaces traditional PID controller. The controller has fraction PIλDμ and 2 parameter λ and μ can replace change the design makes the controller or more fexible, results control has more advantages. Controller segments Qu better performance for the controller objects change over time. By comparing the results of simulations and experiments using 2 controllers which have demonstrated that the fractional integrated controller results PIλDμ for better control than traditional PID controller, the system is stable and more reliable.
出处
《自动化技术与应用》
2018年第1期4-9,共6页
Techniques of Automation and Applications
基金
基于二维智能控制技术和超级电容储能技术的高效电梯系统(编号201508030040)
广东省省级科技计划项目:分布式能源并网逆变器并联运行关键技术研究(编号2015A010106004)
