Study on the control scheme of the modular matrix converter with a hierarchical control system

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05939
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Osaka University
• Principal Investigator: MIURA YUSHI 大阪大学, 工学研究科, 准教授 (90354646)
• Co-Investigator(Renkei-kenkyūsha): ISE Toshifumi 大阪大学, 大学院工学研究科, 教授 (00184581)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: モジュラーマルチレベル変換器 / マトリックスコンバータ / 階層型制御系

Outline of Final Research Achievements

Application of the hierarchical control system to the Modular Multilevel Matrix Converter (MMMxC) that is a member of Modular Multilevel Converter (MMC) family is investigated. The hierarchical control system enables 1)flexibility in the increase of the number of cells, 2)simplification of power control, zero sequence voltage suppression control and capacitor voltage balancing control, 3)improvement of Fault Ride-Through (FRT) capability against a voltage sag and voltage/current unbalance. In this research, these features were demonstrated through numerical simulation and experiments using a 2-kVA 7-level small-scale MMMxC. These results indicate that the MMMxC with the hierarchical control system is one of the promising high-capacity high-voltage frequency converters.

Free Research Field

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