複数の双方向チョッパを使用したトランスレス三相PVインバータの動作検証

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2019/08/01

タイトル(英語): Operation of a Transformerless Three-phase PV Inverter Using Multiple Bidirectional Choppers

著者名: 山田　遼（東京工業大学 工学院 電気電子系），萩原　誠（東京工業大学 工学院 電気電子系）

著者名(英語): Ryo Yamada (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Makoto Hagiwara (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology)

キーワード: 太陽光発電，トランスレス三相PVインバータ　　PV generation systems，transformerless three-phase PV inverter

要約(英語): A 50-kW class three-phase photovoltaics (PV) inverter typically applies a transformerless circuit configuration due to its high efficiency and small volume/size. On the other hand, the conventional PV inverter may suffer from deterioration of solar panels due to a dc leakage current flowing through the stray capacitance of the solar panels. To solve this problem, this paper presents a transformerless three-phase PV inverter consisting of multiple bidirectional choppers, which prevents the dc leakage current by maintaining a negative PV array voltage with respect to the ground potential to a dc voltage that is zero or higher. In addition, the size/volume of an ac filter can be reduced by applying the so-called phase-shifted PWM to the inverter. In this paper, the operating principles and control method of the inverter are discussed and the validity of the control method is verified by performing computer simulation using the “PSCAD/EMTDC” software package and conducting experiments using a 150-V downscaled model.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.139 No.8 （2019）

本誌掲載ページ: 751-760 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/139/8/139_751/_article/-char/ja/