基于模型预测算法功率补偿双PWM协调控制  

Double PWM Coordinated Control Based on Model Predictive Control Algorithm and Power Compensation

作　　者：范波[1,2] 王珂[1] 曾佳[1] 张帆[1] 徐翔[1] 

机构地区：[1]河南科技大学信息工程学院,河南洛阳471023 [2]中信重工机械股份有限公司,河南洛阳471039

出　　处：《电机与控制应用》2016年第11期39-46,共8页Electric machines & control application

基　　金：国家自然科学基金项目(U1404512)

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。Analysing double PWM structure from energy flow, based on controlling active power and reactive power of rectifier by using model predictive control. Using the method of combine dynamic with static to compensate system power in order to control system power, thus power compensation could replace PI control of voltage loop. So restraining fluctuation on DC bus when load power sudden change, reducing DC side capacitor＇s capacity and control line side harmonic. Controling induction motor by using rotor flux orientation. At the end, realizing rectifier side and inverter side coordinate control. Accroding to results of simulation, system could achive the smallest error following and could restrain fluctuation on DC bus when load power sudden change. The line side current waveform displayed well.

关 键 词：模型预测 跟踪误差 功率补偿 协调控制 

分 类 号：TM301.2[电气工程—电机]