An ac inductor-less high-efficiency power conversion circuit for single-phase grid connection

• Project/Area Number: 24360104
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: FUJITA Hideaki 東京工業大学, 理工学研究科, 准教授 (40238580)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000); Fiscal Year 2014: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2013: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000); Fiscal Year 2012: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
• Keywords: 系統連系 / 電力変換器 / 単相交流 / 発電機 / 系統連系変換器 / 小水力発電 / 交流インダクタ / 交直直接変換 / 交流直接変換 / 小規模水力発電 / パワーコンディショナ

Outline of Final Research Achievements

This research have developed an ac inductor-less power conversion circuit for a single-phase power grid connection. The developed circuit consists of semiconductor power devices and filter capacitors. The circuit requires any expensive magnetic components, such as ac and dc inductors and transformers. For this reason, the new topology makes it possible to reduce the initial cost of the power generating system. As a result, it is also expected to increase the number of installation.