单相H桥级联型APF模型预测控制方法研究

发布时间：2018-01-08 10:30

本文关键词：单相H桥级联型APF模型预测控制方法研究　出处：《电网技术》2017年03期 　论文类型：期刊论文

【摘要】：针对单相H桥级联型有源电力滤波器(active power filter,APF),提出一种基于模型预测控制的单目标预测控制法。通过建立电流跟踪误差的指标函数,将输出电平作为控制变量,选取使指标函数值最小的输出电平,实现对参考电流的跟踪。结合改进的电压排序法,采用子模块电容电压的改进平衡控制策略,实现子模块电容电压平衡,并降低了器件的平均开关频率。对输出电流模型预测控制的稳态误差进行理论分析,探索了系统参数与系统补偿性能的关系。与传统控制方法相比,该方法无需考虑复杂的参数整定与权重系数设计,且具有计算量少与易于数字化实现等优点。搭建了H桥级联型APF仿真平台,仿真结果表明,APF系统可快速补偿中压大容量系统中的谐波电流,具有优越的动、静态性能。
[Abstract]:For single-phase H-bridge cascaded active power filter (APF). A single objective predictive control method based on model predictive control is proposed. By establishing the index function of current tracking error, the output level is taken as the control variable and the output level is selected to minimize the value of the index function. Combined with the improved voltage sort method, the sub-module capacitor voltage balance control strategy is adopted to realize the sub-module capacitance voltage balance. The steady-state error of output current model predictive control is analyzed theoretically, and the relationship between system parameters and system compensation performance is explored. This method does not need to consider the complex parameter tuning and weight coefficient design, and has the advantages of less calculation and easy to realize digitally. The H-bridge cascade APF simulation platform is built, and the simulation results show that. APF system can quickly compensate harmonic current in medium voltage and large capacity system, and has superior dynamic and static performance.
【作者单位】：上海电力学院电气工程学院;国网南昌供电公司;
【基金】：国家自然科学基金资助项目(51207086)~~
【分类号】：TM761
【正文快照】： 系数设计,且具有计算量少与易于数字化实现等优点。搭建了H桥级联型APF仿真平台,仿真结果表明,APF系统可快速补偿中压大容量系统中的谐波电流,具有优越的动、静态性能。0引言随着电力电子装置在工业和民用设备上的普遍应用,谐波污染问题日益严重。有源电力滤波器(active power

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