대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2003년도 학술대회 논문집 전문대학교육위원
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- Pages.79-82
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- 2003
3상 승압형 컨버터에 의한 전도노이즈 감소
Conducted Noise Reduction in Three-Phase Boost Converter using Random
- Jung, Dong-Hyo (Incheon City College) ;
- Kim, Sang-Nam (Incheon City College)
- 발행 : 2003.07.06
초록
The switching-mode power converter has been widely used because of its features of high efficiency and small weight and size. In the switching-mode power converter, the output voltage is generally controlled by varying the duty ratio of main switch. When a converter operates in steady state, duty ratio of the converter is kept constant. So the power of switching noise is concentrated in specific frequencies. The more white noise is injected, the more conducted EMI is reduced. But output-voltage is not sufficiently regulated. This is the reason why carrier frequency selection topology is proposed. In the case of carrier frequency selection, output-voltage of steady state and transient state is fully regulated. Spectrum analysis is performed on the Phase current and the CM noise voltage. The former is measured with Current Probe and the latter is achieved with LISN, which are connected to the spectrum analyzer respectively.
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