电力电子变压器运行与控制研究
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摘要
电力电子变压器为基于电力电子变换器的高频变压器,是一种可取代传统工频变压器的新型技术。电力电子变压器不仅具备功率传输、电气隔离功能,且可通过变换器控制系统的优化设计,实现多项辅助功能。文中论述电力电子变压器的运行和控制策略。基于文中提出的控制策略,电力电子变压器可实现功率的双向、精确调控,并兼具无功功率、不平衡电流等辅助补偿功能。
The power electronic transformer is an emerging technology which aims at replacing the conventional low frequency power transformer with a high-frequency transformer driven based on power electronics converters. Besides the capability of the power transformer and electrical isolation,the power electronic transformer provides extended and enhanced operating capabilities that can be achieved with an appropriate controller design for the power electronics converters. In this work,the operation and control of the power electronic transformer is analyzed. Bidirectional and precise active power flow control,full reactive power control,low-voltage side current unbalance management and fault voltage ride-through are achieved based on the proposed control approach.
The power electronic transformer is an emerging technology which aims at replacing the conventional low frequency power transformer with a high-frequency transformer driven based on power electronics converters. Besides the capability of the power transformer and electrical isolation,the power electronic transformer provides extended and enhanced operating capabilities that can be achieved with an appropriate controller design for the power electronics converters. In this work,the operation and control of the power electronic transformer is analyzed. Bidirectional and precise active power flow control,full reactive power control,low-voltage side current unbalance management and fault voltage ride-through are achieved based on the proposed control approach.
引文
[1]王满商,李正明,汪洋.考虑电动汽车不确定性因素的配电网分布式电源优化布置[J].电力系统保护与控制,2019,47(1):67-72.
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[6]李磊,郭志刚,管月,等.反激式AC/AC型三电平交流变换器研究[J].电力电子技术,2018,52(10):81-83.
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[9]孙秋,范春菊,徐峰,等.电力电子变压器中压直流端口单极接地故障特性研究[J].电网技术,2018,42(11):3616-3622.
[10]蒲天骄,李烨,陈乃仕,等.基于电力电子变压器的交直流混合系统优化运行控制关键技术及研究框架[J].电网技术,2018,42(9):2752-2759.
[11]王学梅.宽禁带碳化硅功率器件在电动汽车中的研究与应用[J].中国电机工程学报,2014,34(3):371-379.
[12]卢子广,赵刚,杨达亮,等.配电网电力电子变压器技术综述[J].电力系统及其自动化学报,2016,28(5):48-54.
[2]殷栢辉,江浩侠,陶飞达,等.基于场景分析的含分布式风电配电网无功配置研究[J].电力电容器与无功补偿,2018,39(6):124-129.
[3]熊雄,季宇,李蕊,等.直流配用电系统关键技术及应用示范综述[J].中国电机工程学报,2018,38(23):6802-6813,7115.
[4]雷二涛,马明,梁晓兵.配网链式D-STATCOM自适应无源控制技术[J].电力电容器与无功补偿,2018,39(6):48-52,58.
[5]胡顺威,周晖,从黎,等.基于故障树的含电力电子变电站配电网可靠性分析[J].电力系统保护与控制,2018,46(21):25-31.
[6]李磊,郭志刚,管月,等.反激式AC/AC型三电平交流变换器研究[J].电力电子技术,2018,52(10):81-83.
[7]王晓明,庞浩帅.级联型电力电子变压器不控整流环节仿真分析[J].电子设计工程,2019,27(1):144-148.
[8]魏梦航,荆龙,吴学智,等.含储能的电力电子变压器拓扑及控制策略研究[J].电网技术,2018,42(11):3630-3638.
[9]孙秋,范春菊,徐峰,等.电力电子变压器中压直流端口单极接地故障特性研究[J].电网技术,2018,42(11):3616-3622.
[10]蒲天骄,李烨,陈乃仕,等.基于电力电子变压器的交直流混合系统优化运行控制关键技术及研究框架[J].电网技术,2018,42(9):2752-2759.
[11]王学梅.宽禁带碳化硅功率器件在电动汽车中的研究与应用[J].中国电机工程学报,2014,34(3):371-379.
[12]卢子广,赵刚,杨达亮,等.配电网电力电子变压器技术综述[J].电力系统及其自动化学报,2016,28(5):48-54.