LED照明の放射妨害波評価法の比較に関する一考察 (環境電磁工学) A study on the correlation between common mode voltage measured by using CDNE and radiated electromagnetic field strength emitted from LED bulbs

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抄録

現在、国際無線障害特別委員会(CISPR)において、照明器具の放射妨害波測定(30MHz〜300MHz)の代替として、CDNE (Coupling and Decoupling Network for Emission)を用いた伝導妨害波測定(CDNE法)を適用することが検討されている。世の中の省エネ要求に後押しされ急速に市場導入が進むLED照明ではあるが、一方で、電波受信障害発生の報告例もあり、その要因である放射妨害波を再現性良く評価することは、非常に重要であると考えられる。そこで本報告では、LED電球4機種を供試装置とし、CDNE法とCISPR16-1-4に準拠したアンテナや測定設備を用いた放射妨害波測定法との比較を行い、両者の相関係数が0.22〜0.60と小さいことを示している。また、相関性が弱い要因の一つとして、電源ポートのインピーダンスの違いに着目し、その安定化による相関性改善について検討した結果を示している。

With increase the market introduction of the lighting emitted devices (LEDs) due to the advantages of saving electricity and development of costs reduction, electromagnetic disturbances to TV and radio services have been recognized. This is the result that the suppression of the electromagnetic disturbances emitted from the LED bulbs may not be considered because they are out of scope of EMC regulation. In particular, evaluation methods of the disturbances emitted from LED bulbs in frequency range 30 to 300 MHz are important at the view point of preventing from disturbance of radio reception. The method of conducted disturbances measurement by means of CDNE (Coupling and Decoupling Network for Emission) has been discussed in CISPR as an alternative method for radiated disturbance measurement. But correlation between two methods are not investigated. Therefore, we compared measurement results on four kinds of LED bulbs obtained by CDNE and conventional method. As the result, it is found that the correlation coefficients were 0.22 to 0.60. Additionally, we investigated one of major factor affects to the correlation that is the difference of impedance of EUT's mains terminal. Radiated disturbances were measured on condition that the CDNE was connected to the mains cable of the EUT. The correlation coefficients were slightly increased but we found that the difference of mains impedance was not major factor on the correlation between two measurement methods.

収録刊行物

  • 電子情報通信学会技術研究報告 : 信学技報

    電子情報通信学会技術研究報告 : 信学技報 111(335), 13-17, 2011-12-09

    一般社団法人電子情報通信学会

各種コード

  • NII論文ID(NAID)
    110009466512
  • NII書誌ID(NCID)
    AN10013108
  • 本文言語コード
    JPN
  • ISSN
    0913-5685
  • NDL 記事登録ID
    023368302
  • NDL 請求記号
    Z16-940
  • データ提供元
    NDL  NII-ELS 
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