三相PWM整流器的滑模和非线性最优预测控制

结合滑模变结构控制和非线性最优预测控制的优点,提出了一种新型电压电流双环控制方法,该方法电压环采用滑模变结构控制,充分利用滑模变结构控制的鲁棒性强、对负载的扰动具有很好的适应性的优点,生成指令电流;电流环采用非线性最优预测控制,该方法可以在一个到几个周期内消除跟踪误差,具有响应速度快、跟踪精度高等优点,非常适合数字控制系统.仿真和实验的结果证明了所提方法的有效性和优越性.

Sliding-mode and Non-linear Optimal Predictive Control of Three-phase PWM Rectifier

A novel voltage-current dual-loop control scheme combined the advantages of sliding mode variable structure control and non-linear optimal control was presented, it uses the sliding-mode variable structure control as the voltage loop, takes the advantage of good robustness of variable structure control and its well adaptive to load stir to generate index current; and uses non-linear optimal predictive control as the current loop, which can eliminate the tracking error in one to several period, have the advantage of high response speed, good tracking precision etc, and is well suited to digital control system. The validity and advantage of the proposed control scheme are verified by simulation and experiment results.