电流型变流器的改进模型预测控制  

Improved model predictive control in current source converter

作　　者：李玉玲[1] 鲍建宇[1] 张仲超[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《控制理论与应用》2005年第6期978-982,共5页Control Theory & Applications

基　　金：国家自然科学基金资助项目(50477033)

摘　　要：传统的模型预测控制(MPC)采用脉冲响应的非参数模型作为系统的预测控制模型,计算量大,很难直接应用于实时控制系统.本文提出将传统的MPC进行改进,应用到电流型变流器(CSC)功率因数校正系统中.改进的MPC根据CSC控制量与被控制量的传递函数得出CSC的一阶差分方程作为预测控制模型,同时保留传统MPC反馈校正、动态优化等优点.将此改进的MPC与传统的PID控制进行对比研究,结果表明:改进的MPC用于电流型变流器,比传统的PID控制具有更好的鲁棒性和更快速的动态响应特性.In traditional model predictive control （MPC）,non-parameter model based on pulse response is usually adopted as predictive control model, which results in complex computation, so this method is difficult to implement directly in realtime control system. Improved MPC was proposed and applied to power factor correction system of current source converter （CSC）. In the proposed MPC, the first-order differential equations were derived from the transfer functions of controlling variables and controlled variables in CSC,and the equations were used as predictive control model.Meanwhile,the merits of feedback correction and dynamic optimization in traditional MPC were reserved in the new MPC. The proposed MPC gets better robustness and faster dynamic characteristics than the traditional PID control when used in the CSC power factor correction system.

关 键 词：模型预测控制 电流型变流器 功率因数校正 PID控制 

分 类 号：TM461[电气工程—电器]