Three-Phase ZVR Topology and Modulation Strategy for Transformerless PV System

被引：42
作者：
Guo, Xiaoqiang [1 ]
Zhang, Xue [1 ]
Guan, Honglei [1 ]
Kerekes, Tamas [2 ]
Blaabjerg, Frede [2 ]
机构：
[1] Yanshan Univ, Dept Elect Engn, Qinhuangdao 066004, Peoples R China
[2] Aalborg Univ, Dept Energy Technol, DK-9220 Aalborg, Denmark
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2019年 / 34卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Inverter; leakage current; modulation; transformerless PV system; LEAKAGE CURRENT ATTENUATION; INVERTER;
D O I：
10.1109/TPEL.2018.2849074
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Leakage current reduction is crucial for operating transformerlss photovoltaic (PV) systems. In this letter, a new three-phase topology and modulation strategy is proposed. It is derived from the single-phase zero-voltage state rectifier topology, but the operation mechanism is quite different. Therefore, a new modulation strategy based on the Boolean logic function is proposed to achieve the constant common-mode voltage, so as to eliminate the leakage current. Finally, the experimental tests are carried out to verify the feasibility and effectiveness of the proposed solution.
引用
收藏
页码：1017 / 1021
页数：5
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