Development of High-Frequency-Switching Inverter Circuit for High-Speed Motro Drive

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420263
• 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: Tokyo Metropolitan University
• Principal Investigator: Wada Keiji 首都大学東京, 理工学研究科, 准教授 (00326018)
• Co-Investigator(Kenkyū-buntansha): SHIMIZU Toshihisa 首都大学東京, 理工学研究科・電気電子工学専攻, 教授 (30254155)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: PWMインバータ / 電力変換回路

Outline of Final Research Achievements

This research focuses on a three-phase inverter using a Si-MOSFETs and SiC-SBD to realize a higher-frequency switching operation and discusses both the loss analysis and thermal resistance. First of all, a laboratory experimental system of a PWM inverter focused on a cooling structure is produced with separating heat sinks. The experimental results for 300-kHz switching operation rated at 300 V and 3.2 kVA are presented to verify the separating heat sinks structure. Secondly, this research discusses a gate drive circuit without the dead time for high-frequency switching PWM inverter. In order to realize the dead-time less inverter, the 5-V gate drive circuit is proposed. The experimental results, rated at 500 kHz switching frequency and 300 V DC, are presented.

Free Research Field

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