基于分数阶PID预测与滑模控制的三相逆变系统

Three phase inverter system based on fractional order PID prediction and sliding mode control

为了提高三相电压型逆变器系统的动静态性能和鲁棒性,缩短控制器的响应时间,提出一种基于状态空间方程的多变量分数阶PID模型预测控制(multivariable fractional order PID model predictive control,MFOPIDMPC)和离散滑模控制(discrete sliding mode control,DSMC)的双闭环控制算法。该算法可使系统在各种复杂情况下快速跟踪参考电压、参考电流,确保输出电能质量和系统的实时性。此外,为解决人工调试所带来的不精确、效率低等问题,采用差分进化(differential evolution,DE)算法对参数进行整定。仿真实验结果表明,所提算法具有响应速度快、鲁棒性强、跟踪精度高等优点。

In order to improve the dynamic and static performance and robustness of three-phase voltage type inverter system and shorten the response time of controller,a kind of multivariable fractional order PID model predictive control(MFOPIDMPC)and discrete sliding mode control(DSMC)method based on state space equation was proposed.The system could quickly track reference voltage and reference current in various situations to ensure the output power quality and real-time performance of the system.In addition,to solve the problem of imprecision and low efficiency caused by manual debugging,differential evolution algorithm were adopted to set the parameters.Simulation results show that the proposed algorithm has the advantages of fast response,strong robustness and high tracking accuracy.