基于交交变换的动态电压恢复器及其控制策略  

An AC/AC Converter Based Dynamic Voltage Restorer and Its Control Strategy

作　　者：廖彬杰 焦自权 李瑞琦 张冲 LIAO Bin-jie;JIAO Zi-quan;LI Rui-qi;ZHANG Chong(China Southern Power Grid Guangxi Power Grid Co.,Ltd.,Qinzhou 535000,China;不详)

机构地区：[1]中国南方电网广西电网有限责任公司钦州新区供电局,广西钦州535000 [2]北部湾大学,广西钦州535001 [3]中国南方电网广西电网有限责任公司钦州供电局,广西百钦州535000

出　　处：《电力电子技术》2024年第4期27-30,共4页Power Electronics

基　　金：中国南方电网公司科技项目(5217L022000C);中国华能公司科技项目(HNRK2020623)。

摘　　要：传统的动态电压恢复器(DVR)中直流储能环节体积重量大,不易集成,交交变换技术省去实现动态电压补偿,更加经济节约。虚拟整流逆变拓扑作为主电路拓扑,结构简洁,并且能够实现自然换流;单周期控制精度高,动态跟踪性能佳,控制鲁棒性好,应用于DVR可以更好地满足其特殊的快速性要求。在理论分析基础上,研制了实验样机进行实验验证,实验结果验证了变换器的可行性及单周期控制良好的动态特性。The DC energy storage in traditional dynamic voltage restorer(DVR)is so large,heavy and not easily integrated,and AC/AC converter technology is more economic without dynamic voltage compensation.As the topology of main circuit,the virtual rectifying and inverter topology has compact structure and is able to naturally current commutate.Since the DVR has strict demand of quick responses,one-cycle control is chosen because of its high precision,excellent dynamic tracking performance,and good control robustness.Based on theory analysis,an experimental prototype is developed for experimental verification,and the experimental results have verified the feasibility of the converter and the good dynamic characteristics of one-cycle control.

关 键 词：动态电压恢复器 虚拟整流逆变 单周期控制 

分 类 号：TM741[电气工程—电力系统及自动化]