电工技术学报  2020, Vol. 35 Issue (11): 2328-2338    DOI: 10.19595/j.cnki.1000-6753.tces.191760
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基于高频汇集母线的电能路由器能量自循环系统及功率协同控制策略
文武松1, 2, 赵争鸣1, 2, 莫昕1, 2, 李凯3, 蔡伟谦1, 2, 冯高辉1, 2
1.清华大学电机工程与应用电子系 北京 100084;
2.电力系统及发电设备安全控制和仿真国家重点实验室(清华大学) 北京 100084;
3.北京交通大学电气工程学院 北京 100044
Energy Self-Circulation Scheme and Power Coordinated Control of High-Frequency-Bus Based Electric Energy Router
Wen Wusong1, 2, Zhao Zhengming1, 2, Mo Xin1, 2, Li Kai3, Cai Weiqian1, 2, Feng Gaohui1, 2
1. Department of Electrical Engineering Tsinghua University Beijing 100084 China;
2. State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Department of Electrical Engineering Tsinghua University Beijing 100084 China;
3. School of Electrical Engineering Beijing Jiaotong University Beijing 100044 China
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摘要 该文提出一种基于高频汇集母线的多端口电能路由器新型拓扑,与传统共直流母线结构相比,能减少功率变换级联数、提高系统效率,且各端口相互隔离,可实现灵活接地,还具备模块化和端口可扩展等特点。针对该拓扑在大容量应用场合满功率实验和系统效率测试的需求,提出一种能量自循环运行方案,有效节约用能并避免对大功率负荷的需求。该拓扑内部存在较强的功率耦合关系,为改善动态特性,提出一种功率协同控制策略。根据解耦后的三相平均功率分布规律调节需注入的正序和负序电流大小,实现了在三相电网电压和有功负荷不平衡条件下对高压交流端口的控制;采用功率交叉解耦策略实现了对多个端口的协同控制。最后,在一台10kV/2MW的四端口电能路由器示范样机上通过实验,验证了本文所提方案和控制策略的有效性。
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关键词 电能路由器高频汇集母线能量自循环协同控制    
Abstract:A multi-port high-frequency-bus based electric energy router is presented in this paper. Compared with the conventional DC bus structure, this topology can reduce the number of cascaded power convertors and improve the system efficiency. Each port is isolated from each other, which can realize flexible grounding. It also has the features of modularity and scalability. In order to meet the requirements of full-power experiment and efficiency measurement in high-power applications, an energy self-circulation scheme is proposed, which can effectively reduce energy consumption and avoid the demand for high-power load. Moreover, to improve its dynamic performance, a power coordinated control strategy is developed. According to the distribution rule of three-phase average power, the injected positive- and negative-sequence currents are calculated to realize the control of high-voltage AC port under the conditions of unbalanced voltages and uneven active loads, the power cross-coupling suppression strategy is used for the system coordinated control. Finally, experiments performed on a 10kV/2MW prototype verify the effectiveness of the proposed scheme and control strategy.
Key wordsElectric energy router    high-frequency-bus    energy self-circulation    coordinated control   
收稿日期: 2019-12-15     
PACS: TM721  
基金资助:国家自然科学基金重大项目(51490683)和国家重点研发计划(2017YFB0903200)资助
通讯作者: 赵争鸣 男,1959年生,教授,博士生导师,IEEE Fellow,研究方向为大容量电力电子变换系统、光伏发电、电机控制、无线电能传输等。E-mail:zhaozm@tsinghua.edu.cn   
作者简介: 文武松 男,1982年生,博士研究生,研究方向为大容量电力电子变换系统,电力电子变压器设计与控制。E-mail:wenwusong@163.com
引用本文:   
文武松, 赵争鸣, 莫昕, 李凯, 蔡伟谦, 冯高辉. 基于高频汇集母线的电能路由器能量自循环系统及功率协同控制策略[J]. 电工技术学报, 2020, 35(11): 2328-2338. Wen Wusong, Zhao Zhengming, Mo Xin, Li Kai, Cai Weiqian, Feng Gaohui. Energy Self-Circulation Scheme and Power Coordinated Control of High-Frequency-Bus Based Electric Energy Router. Transactions of China Electrotechnical Society, 2020, 35(11): 2328-2338.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.191760          https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I11/2328