电工技术学报  2019, Vol. 34 Issue (14): 2922-2935    DOI: 10.19595/j.cnki.1000-6753.tces.L80323
电力电子 |
单相升降压型五电平逆变器拓扑及控制
杨国良, 张玉娜, 陈泰余, 贾艳晓, 方一鸣
燕山大学电气工程学院 秦皇岛 066004
Topology and Control Strategy of a Single-Phase Buck-Boost Five-Level Inverter
Yang Guoliang, Zhang Yuna, Chen Taiyu, Jia Yanxiao, Fang Yiming
School of Electrical Engineering Yanshan University Qinhuangdao 066004 China
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摘要 通过分析现有五电平逆变器拓扑的优缺点,提出一种具有升降压能力的五电平逆变器拓扑。相对于传统的多电平逆变器,新升降压型五电平逆变器具有能够实现升降压、拓扑简单、易于实现控制、功率器件少、开关损耗小等优点。在载波层叠调制策略下,对所提逆变器进行开环仿真,证明拓扑的升降压能力。基于传统的PR控制方法,对所提逆变器进行闭环设计并仿真。为了提高并网电流的质量,采用模型预测控制算法来对逆变器进行并网控制,通过仿真证明理论分析的正确性。并将这种控制方法与传统PR控制方法进行对比,突出模型预测的优越性。最后,基于该逆变器拓扑进行部分开环及闭环实验,验证了拓扑的可行性。
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杨国良
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方一鸣
关键词 五电平单相逆变器升降压拓扑模型预测控制    
Abstract:In this paper, a new single-phase five-level inverter topology with buck-boost capability is proposed by analyzing the advantages and disadvantages of the existing five-level inverter topology. Compared with the traditional multilevel inverter topology, the new Buck-Boost five-level inverter has the advantages of enabling buck-boost, simple topology, easy control, less power devices, and low switching losses. Under the carrier cascade modulation strategy, an open loop simulation was performed on the new inverter to verify the Buck-Boost capability. Based on the PR control, the closed-loop design of the new inverter was performed and verified by simulation. In order to improve the quality of the grid-connected current, the model predictive control algorithm was used to control the inverter, and Matlab simulation was performed to verify the correctness of the theoretical analysis. Compared with the traditional PR control methods, this control method has the advantage of model prediction. Finally, the open-loop and closed-loop experiments have verified the new inverter topology.
Key wordsFive-level    single-phase inverter    Buck-Boost    topology    model predictive control   
收稿日期: 2018-06-30      出版日期: 2019-07-29
PACS: TM464  
基金资助:国家自然科学基金面上项目(61873226),河北省自然科学基金重点资助项目(F2017203304)和新疆维吾尔自治区自然科学基金项目(2019D01A01)资助
通讯作者: 杨国良 男,1973年生,博士,副教授,研究方向为新能源发电控制、电机控制、风力发电、新能源发电控制、电力电子及智能控制等。E-mail:y99ygl@ysu.edu.cn   
作者简介: 张玉娜 女,1995年生,硕士研究生,研究方向为多电平逆变器。E-mail:869874752@qq.com;
引用本文:   
杨国良, 张玉娜, 陈泰余, 贾艳晓, 方一鸣. 单相升降压型五电平逆变器拓扑及控制[J]. 电工技术学报, 2019, 34(14): 2922-2935. Yang Guoliang, Zhang Yuna, Chen Taiyu, Jia Yanxiao, Fang Yiming. Topology and Control Strategy of a Single-Phase Buck-Boost Five-Level Inverter. Transactions of China Electrotechnical Society, 2019, 34(14): 2922-2935.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.L80323          https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I14/2922