A Three-Phase Grid-Connected Microinverter for AC Photovoltaic Module Applications
发布时间：2021-07-29
点击次数：
影响因子：6.153
DOI码：10.1109/TPEL.2017.2773648
发表刊物：IEEE Transactions on Power Electronics
关键字：Flyback; maximum power point tracking (MPPT); photovoltaic (PV) microinverters; third-harmonic injection
摘要：A photovoltaic (PV) microinverter converts the dc from a PV panel to ac directly, which has the advantages of improved energy harvesting, friendly “plug-and-play” operation, enhanced flexibility/expandability, excellent system redundancy, and no dc cabling/safety issue; therefore, it is an attractive solution for the grid-connected PV system. In ac PV module applications, the features such as power density, reliability, efficiency, and reactive power capability are essential for the microinverters. In order to overcome the drawbacks of the conventional microinverters, including the power density/reliability issues caused by the bulky input capacitors and the limited output reactive power capability, a three-phase microinverter without energy storage capacitors is proposed in this paper. The proposed microinverter consists of a flyback stage, a third-harmonic injection circuit, and a line-commutated current-source-type inverter. The flyback stage realizes maximum power point tracking, while the third-harmonic injection circuit is responsible for output power factor correction. In addition to having the potential of achieving compact structure, long lifetime, and high efficiency, the developed microinverter provides extended output reactive power control range and three-phase balanced output. Finally, the proposed topology and the method are verified by simulations and experimental results.
合写作者：Wang, Hui*, Xu, Junfeng, Su, Mei, Gui, Weihua, Li, Xing
第一作者：Feng, Jianghua
论文类型：期刊论文
论文编号：17877406
学科门类：工学
一级学科：电气工程
文献类型：J
卷号：33
期号：9
页面范围：7721-7732
ISSN号：0885-8993
是否译文：否
发表时间：2018-09-01
收录刊物：SCI、EI
附件：
A Three-Phase Grid-Connected Microinverter for AC Photovoltaic Module Applications.pdf