Selection Criteria of Capacitors for Flying Capacitor Converters

• Obara Hidemine

  Chiba University

• Sato Yukihiko

  Chiba University

抄録

Multilevel converters have a number of capacitors as sources of multilevel voltages. The volume of the capacitors should be minimized to realize a high-power-density converter. In this paper, the selection criteria of the capacitors in a flying capacitor converter are investigated. In this type of converter, the required capacitance, consequently, volume of the capacitors are decreased when the PWM carrier frequency is higher. However, there is a limitation on the reduction in the volume due to the temperature increase caused by the power losses in the capacitors when the volume becomes small during high-PWM-frequency operation. On the basis of an investigation including the temperature increase, it is clarified that a capacitor with a high capacitance density is not necessarily the best for the flying capacitor depending on the operating conditions.

収録刊行物

• IEEJ Journal of Industry Applications

  IEEJ Journal of Industry Applications 4 (2), 105-106, 2015

  一般社団法人 電気学会

キーワード

• capacitor
• flying capacitor converter
• multilevel converter
• equivalent series resistance (ESR)
• power density

詳細情報

• CRID: 1390001205415726464
• NII論文ID: 130004972824
• DOI: 10.1541/ieejjia.4.105
• ISSN: 21871108
• ISSN: 21871094
• Web Site: https://www.jstage.jst.go.jp/article/ieejjia/4/2/4_105/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可