基于模型预测算法功率补偿双PWM协调控制

发布时间：2018-03-18 17:36

  本文选题：模型预测　切入点：跟踪误差　出处：《电机与控制应用》2016年11期 　论文类型：期刊论文

【摘要】：从能量流动角度分析双PWM结构,在前端整流侧采用模型预测算法实现对整流器输出的有功功率与无功功率最小跟踪误差的基础上,采用动态与静态相结合的功率补偿方法实现对系统能量控制,从而代替前端整流侧电压外环PI控制,用以达到在负载功率突变时抑制直流母线电压波动,减少直流侧电容容量,控制网侧谐波的目的。后端采用转子磁链定向控制方法实现对三相异步电动机的控制,最终实现双PWM前端整流侧与后端逆变侧的协调控制。仿真结果表明,系统在电动机功率突变时,能够实现功率最小误差跟踪控制,并且能够抑制直流母线电压波动,网侧电流波形良好。
[Abstract]:The dual PWM structure is analyzed from the point of view of energy flow. The model prediction algorithm is used to realize the minimum tracking error of active and reactive power output from the front end rectifier. The dynamic and static power compensation method is used to realize the system energy control instead of the front-end rectifier voltage outer loop Pi control so as to suppress the DC bus voltage fluctuation and reduce the DC side capacitance capacity when the load power changes. The purpose of controlling the harmonics on the network side. The rotor flux oriented control method is used to control the three-phase asynchronous motor at the back end, and the coordination control between the rectifier side of the double PWM front end and the back end inverter side is finally realized. The simulation results show that, When the motor power changes, the system can realize the power minimum error tracking control, and can restrain the DC bus voltage fluctuation, and the grid side current waveform is good.
【作者单位】： 河南科技大学信息工程学院;中信重工机械股份有限公司;
【基金】：国家自然科学基金项目(U1404512)
【分类号】：TM46
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本文编号：1630613