改进双开关表直接功率控制策略的研究  

Research on Improved Dual Switch Table Direct Power Control Strategy

作　　者：胡会智 吉培荣[1,2] 张赟宁[1,2] 吴张傲 HU Huizhi;JI Peirong;ZHANG Yunning;WU Zhangao(School of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China;Hubei Provincial Collaborative Innovation Center for New Energy Microgrid,China Three Gorges University, Yichang 443002,China;Gongan Power Supply Company,Hubei Power Supply Company,Gongan 434300,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]三峡大学新能源微电网湖北省协同创新中心,湖北宜昌443002 [3]湖北省供电公司公安供电公司,湖北公安434300

出　　处：《电子科技》2019年第5期62-67,共6页Electronic Science and Technology

基　　金：国家自然科学基金(61603212)~~

摘　　要：为了有效解决电压型三相PWM整流器的动态扇区直接功率控制策略在输入功率与指定功率之间存在较大差异的问题,文中研究了一种新型双开关表DPC调节机制。通过引进三状态滞环比较器,形成了一个新的功率幅度控制函数。系统根据功率幅度控制函数和三状态滞环比较器的输出值来选择开关表和开关矢量,以使整流器能够根据实时的功率差额选择合适的开关矢量。最后通过与传统动态扇区DPC策略的MATLAB/Simulink仿真对比,证明双开关表DPC策略可以有效改善直流侧输出电压特性并减小无功功率纹波。In order to effectively solve the problem that the dynamic sector direct power control strategy of the voltage type three-phase PWM rectifier has a large difference between the input power and the specified power, a new double switch DPC regulation mechanism was studied in this paper. By introducing a three state hysteresis comparator, a new power amplitude control function was formed. The switch table and the switch vector were selected by the system according to the power amplitude control function and the output value of the three state hysteresis comparator, so that the rectifier could choose the appropriate switch vector based on the real time power difference. Finally, compared with the MATLAB/Simulink simulation of the traditional dynamic sector DPC strategy, the double switch DPC strategy could effectively improve the DC side output voltage characteristics and reduced the reactive power ripple.

关 键 词：直接功率控制 双开关表 三状态滞环比较器 功率幅度控制函数 输出电压特性 无功功率纹波 

分 类 号：TP211.4[自动化与计算机技术—检测技术与自动化装置] TM461[自动化与计算机技术—控制科学与工程]