電流不連続モードで動作する昇圧形アクティブバッファを用いた単相系統連系インバータ

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: 2018/05/01

タイトル(英語): DC to Single-Phase AC Grid Connected Inverter with Boost Type Active Buffer Circuit Operated in Discontinuous Current Mode

著者名: 伊東　淳一（長岡技術科学大学），櫻庭　友和（長岡技術科学大学），レ ホアイ　ナム（長岡技術科学大学），渡辺　大貴（長岡技術科学大学），日下　佳祐（長岡技術科学大学）

著者名(英語): Jun-ichi Itoh (Nagaoka University of Technology), Tomokazu Sakuraba (Nagaoka University of Technology), Hoai Nam Le (Nagaoka University of Technology), Hiroki Watanabe (Nagaoka University of Technology), Keisuke Kusaka (Nagaoka University of Technology)

キーワード: 単相系統連系インバータ，アクティブバッファ回路，電流不連続モード　　single-phase AC grid-connected inverter，active buffer circuit，discontinuous current mode

要約(英語): A novel circuit topology for a single-phase inverter with a power decoupling capability operated in discontinuous current mode (DCM) is proposed in this paper. An inverter connected to a single-phase grid requires a power decoupling capability to compensate for a power ripple with twice the grid frequency. Bulky capacitors are used as DC-link capacitors in conventional systems. In contrast, the proposed circuit topology can use ceramic capacitors instead of electrolytic capacitors by reducing the required capacitance based on the active buffer concept. Moreover, this active buffer requires no additional inductor because it uses DCM for the power decoupling capability. In this paper, a control method for the active buffer circuit operated in DCM is introduced. An experimental verification of a 1-kW prototype shows that the proposed circuit reduces the input current ripple at twice the grid frequency by 96.8%, with a maximum efficiency of 95.2%. In addition, the Pareto optimization of power density and efficiency is used to clarify the maximum power density points. It is found that the maximum power density of the proposed circuit is 1.6 times higher than that of a conventional boost-type active buffer.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.138 No.5 （2018） 特集：平成29年産業応用部門大会

本誌掲載ページ: 453-462 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/138/5/138_453/_article/-char/ja/