2023 Fiscal Year Final Research Report
Development of bidirectional hybrid converter which enables both high reliability and high efficiency for EV power supply system.
| Project/Area Number |
21K04038
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21010:Power engineering-related
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| Research Institution | Kagoshima National College of Technology |
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Principal Investigator |
Sakasegawa Eiichi 鹿児島工業高等専門学校, 電気電子工学科, 准教授 (30390503)
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| Co-Investigator(Kenkyū-buntansha) |
芳賀 仁 長岡技術科学大学, 工学研究科, 准教授 (10469570)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 昇圧コンバータ / NPCインバータ / 電気二重層キャパシタ / 回生 |
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| Outline of Final Research Achievements |
In this study, we developed a novel multi supply type boost converter with EDLC that suitable for three level inverters. A conventional circuit consists of series connected four switches and one battery, and can control boost operation and neutral point potential. Control performance required for proposed circuit are boost operation, neutral point potential control, and current control of the EDLC. For the purpose, in this study, we examined a novel circuit and its control system that enables three control performance and having the switch of the minimum number. We used PI control for the control system and applied a design method derived from conventional circuit design.In conclusion, we represented the effectiveness of the proposed system for the control performance by simulation. Furthermore, we clarified the circuit modes that appear in each control mode such as boost operation, neutral point potential control and current control of the EDLC.
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| Free Research Field |
パワーエレクトロニクス
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| Academic Significance and Societal Importance of the Research Achievements |
提案回路は複数の直流電源（バッテリーおよびEDLC）を持ち、片方の電源を予備電源と利用できる可能性を有している。社会的意義として、提案回路はEDLCを用いて電源システムの信頼性も強化した回路構成になっている。現在、持続可能な社会の実現のために、EVやPHV等の電気自動車はますます普及していくことが確実になっている。そのような社会において、本研究で提案した電源システムを有するEVが普及することにより、事故や自然災害等で片方の電源を失った場合に、2つめの電源により運転を継続でき、利用者が安全、安心を確保できる可能性を有している。
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