2017 Fiscal Year Final Research Report
Development of High-Frequency Resonant Inverters for Metal Hardening Applications
| Project/Area Number |
15K05940
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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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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 電力変換 / パワーエレクトロニクス / 高周波誘導加熱 / 高周波インバータ / 周波数変換 / 金属熱処理 |
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| Outline of Final Research Achievements |
The high frequency(HF) resonant inverters for metal hardening applications have been developed in this research project. Four kinds of new dc-ac inverters and ac-ac converters have been proposed, and their feasibility has been clarified by experiment. The time-sharing dc-ac HF inverter is developed which has the excellent features of cost-effective power circuit and low switching losses as well as good electromagnetic compatibility. Hugh efficiency over 95% has been confirmed in a 500W-100kHz prototype. The second and third converters developed in the project are based on a resonant inductor-less topology under the principle of time sharing.
The fourth type of proposed resonant convert is a single-stage low frequency- high frequency ac-ac converter. The High-effciency over 97% and sound power quality of line current have been demonstrated by 3kW-40kHz prototype with e ferromagnetic metal induction heating load.
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| Free Research Field |
パワーエレクトロニクス
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