전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2004년도 전력전자학술대회 논문집(2)
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- Pages.811-814
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- 2004
고주파 변압기 차폐에 따른 EMI 방사 노이즈 저감에 관한 연구
Reduction of Radiated Noise of EMI using Shielding Methods of High Frequency Transformer
- Lee Wan-Yun (Autonics Corp.) ;
- Chung Gyo-Bum (Hongik university)
- 발행 : 2004.07.01
초록
Radiated noise from high frequency transformers (HTFs) of switching mode power supply is mainly caused by the leakage inductance and the parasitic capacitance of HTFs. Generally, the radiated noise can be reduced by adding snubbers to switching power circuits or shielding HTFs. Radiated noise, however, is mainly affected by the shielding method. In this paper, the various shielding methods to reduce the radiated noise of EMI are analyzed, compared in the experimental studies. And it is proved that the radiated noise can be reduced according to the shielding methods of HFTs and the electrical connection between shields and power circuit.
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