Analysis and Experimentation of Modular Differential Inverter Utilizing SEPIC Modules and SIC Devices for Grid Connected Applications

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: 2020/09/01

タイトル(英語): Analysis and Experimentation of Modular Differential Inverter Utilizing SEPIC Modules and SIC Devices for Grid Connected Applications

著者名: Ahmed Shawky (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology/Electrical Engineering Department Aswan Faculty of Engineering, Aswan University), Mahmoud A. Sayed (Department of Electrical Power and Machines Engineering,

著者名(英語): Ahmed Shawky (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology/Electrical Engineering Department Aswan Faculty of Engineering, Aswan University), Mahmoud A. Sayed (Department of Electrical Power and Machines Engineering, Faculty of Engineering, South Valley University), Takaharu Takeshita (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology)

キーワード: modular inverter，differential topology，SEPIC modules

要約(英語): This paper presents a three-phase Modular Differential Inverter (MDI) utilizing DC-DC modules that provide AC power to the utility grid with step-up voltage capability. The construction of the MDI has many advantages such as flexibility and reliability, and can be designed, optimized and scaled to any power level. Moreover, Single-Ended Primary-Inductor Converter (SEPIC) modules have been proposed to incorporate in the MDI because it has many merits that enhance the overall performance of the differential inverter. SiC devices are also integrated into the SEPIC modules for efficient operation at a high switching frequency. An in-depth mathematical model discussing the practical issues of differential inverter such as variable duty cycle, low order harmonics and circulating power is also presented. The design steps of the proposed SEPIC modules are presented in detail considering the standard grid side requirements of total harmonic distortion (THD). The MDI, which implements three parallel modules in each phase, is investigated using PSIM simulation software. A mismatch of ±20% in the SEPIC module parameters of each phase is investigated to confirm the system performance. Moreover, a laboratory prototype of the system, considering only one SEPIC module in each phase with 200V grid-side voltage, 1.6kW, and 50kHz switching frequency, is carried out to verify the validity of the system.

本誌: IEEJ Journal of Industry Applications Vol.9 No.5 （2020）

本誌掲載ページ: 573-583 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/9/5/9_573/_article/-char/ja/