PRBSを用いた電力変換器による太陽電池のインピーダンス測定手法

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: 2020/03/01

タイトル(英語): An Impedance Measurement Method of Solar Panels by Power Converter using PRBS

著者名: 武智　滉司（立命館大学），横井　健志（立命館大学），柿ヶ野　浩明（立命館大学）

著者名(英語): Koji Takechi (Ritsumeikan University), Takeshi Yokoi (Ritsumeikan University), Hiroaki Kakigano (Ritsumeikan University)

キーワード: 太陽電池，交流インピーダンス法，DC/DCコンバータ，PRBS　　solar panel，ac impedance method，dc-dc converter，PRBS

要約(英語): The output power of solar panels may decrease by degradation due to long-term usage and surface contamination. Methods to detect these problems are necessary for photovoltaic generation to be more widespread. AC impedance methods are used for electrochemical devices to inspect the inside situation of solar panels. In this study, we applied an ac impedance method to solar panels, which have some merits compared with the traditional methods. We added a small ac signal to the duty of a dc-dc converter to implement the ac impedance method. The small ac signal was a white noise generated by a pseudorandom binary sequence (PRBS) such that many frequency points can be measured simultaneously. Unlike traditional methods, this method can examine the solar panels when they are generating power. We measured shaded and nonshaded solar panel impedances and compared with the experimental results. From the results, we can show the potential to distinguish the shaded panel or the unshaded panel based on the difference of the impedance characteristics.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.140 No.3 （2020） 特集：半導体電力変換研究会

本誌掲載ページ: 140-147 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/140/3/140_140/_article/-char/ja/