Method for High-Frequency Modeling of Common-Mode
                        Choke

Jung, Hyeonjong; Yoon, Seok Soo; Kim, Yuseon; Bae, Seok; Lim, Yeong-Seog

doi:10.5515/kjkiees.2017.28.12.964

Cited by 2 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…이러한 누설전류는 안전상의 문제로 국내, 외 안 전관리기관(safety agency)에서 허용치를 규제하고 있다. 또한 누설 전류를 줄이기 위해선 인덕턴스를 일정 수준 이상으로 증가시켜야 하므로 PCB의 크기 및 원가가 증가 하는 단점이 있다 [6]～ [9] .…”

unclassified

EMI Noise Reduction of AC/DC Converter Using the Secondary Low Pass Filter

Lee¹,

Park²

2019

J. Korean Inst. Electromagn. Eng. Sci.

View full text Add to dashboard Cite

In this paper, we measure the Electromagnetic Interference(EMI) noise of AC/DC converters in lighting devices to enable us to optimize the design of its filters as compared to the conventional filters. Addition of RC filters to the circuit helps in increasing the noise margin, thereby, reducing the noise generated by high-frequency transformers and switching devices. The characteristics of each converter are compared after addition of RC filter to the circuit. To reduce the noise generated by the high frequency band, ranging from 1 MHz to 30 MHz, high frequency transients and switching devices, with a cut off frequency closer to the band, have been designed. The results are measured using an oscilloscope. A reduction in noise is observed in case of a filter designed using a combination of R and C with a cutoff frequency of 1 MHz. The EMI Receiver shows that the noise is significantly reduced on addition of filters and the noise reduction ranges from 2 dBuV to 11 dBuV, respectively.

show abstract

unclassified