Development of a Control Method for LLC Converter Utilized for Input-Parallel-Output-Series Inverter System with Solid-State Transformers

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2019/07/01

タイトル(英語): Development of a Control Method for LLC Converter Utilized for Input-Parallel-Output-Series Inverter System with Solid-State Transformers

著者名: Mizuki Nakahara (Hitachi, Ltd.), Yuki Kawaguchi (Hitachi, Ltd.), Kimihisa Furukawa (Hitachi, Ltd.), Mitsuhiro Kadota (Hitachi, Ltd.), Yuichi Mabuchi (Hitachi, Ltd.), Akihiko Kanoda (Hitachi, Ltd.)

著者名(英語): Mizuki Nakahara (Hitachi, Ltd.), Yuki Kawaguchi (Hitachi, Ltd.), Kimihisa Furukawa (Hitachi, Ltd.), Mitsuhiro Kadota (Hitachi, Ltd.), Yuichi Mabuchi (Hitachi, Ltd.), Akihiko Kanoda (Hitachi, Ltd.)

キーワード: solid-state transformer，multi-level，LLC converter，SiC，efficiency，PCS

要約(英語): A multi-level power converter with series-connected solid-state transformer (SST) units for a power conditioning system for photovoltaic (PV) generation was developed. Each SST unit has an LLC converter driven by SiC-MOSFETs and a high-frequency transformer. By applying the developed converter, the system can be optimized and made lighter than a conventional system using a commercial transformer. A method for controlling the LLC converter so as to maintain its high efficiency over a wide voltage range of a PV panel is proposed. According to the results of an experimental evaluation of a prototype SST unit, the efficiency of the LLC converter is 98% or more even when the input voltage from the PV panel changes.

本誌: IEEJ Journal of Industry Applications Vol.8 No.4 （2019） Special Issue Ⅰ on “JIASC 2018”　Special Issue Ⅱ on “IPEC-Niigata 2018”

本誌掲載ページ: 652-659 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/8/4/8_652/_article/-char/ja/