線形動作する電流バイパス回路を多段直列接続した高力率LED駆動回路

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2014/05/01

タイトル(英語): Linear PFC Regulator for LED Lighting with the Multilevel Current Bypass Circuit

著者名: 野下　裕市（長岡技術科学大学），伊東　淳一（長岡技術科学大学）

著者名(英語): Yuichi Noge （Nagaoka University of Technology）, Jun-ichi Itoh （Nagaoka University of Technology）

キーワード: LED照明，力率改善，線形回路，雑音端子電圧　　LED lighting，power factor correction，linear circuit，conducted emission

要約(英語): This paper proposes a linear PFC regulator for LED lighting applications. The proposed circuit is small in size because the circuit structure consists of only semiconductors, ICs, and small resistors without any reactors and electrolytic capacitors. The current bypass circuit which is connected in parallel to the LED string consists of one MOSFET, two Zener diodes, and one resistor. The MOSFET is operated in an active state by a self-bias circuit. Thus, an external controller and high voltage gate drivers are not required. The proposed circuit is experimentally validated using 7.8W 5-string and 15W 10-string prototypes. From the experimental results with the 10-string prototype, the total harmonic distortion of the input current is 5.1%, and the power factor is 0.999. In addition, the power loss is analyzed at an efficiency of 91.6% for the prototype circuit.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.134 No.5 （2014）

本誌掲載ページ: 554-563 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/134/5/134_554/_article/-char/ja/