A New Technique to Suppress the Common Mode Conduction Noise of the Boost Converter

• Autorzy: Rahmati A. , Abrishamifar A. , Skandarnezhad A.

Warianty tytułu

Nowa technika zmniejszania składowej wspólnej szumu w przekształtniku typu boost

• Języki publikacji: EN

Abstrakty

EN

EMI filter is an essential part of the modern switching power supplies contributing to significant price and size. This paper presents a new method to reduce the common mode (CM) electromagnetic interference (EMI) of the boost converter. Conventional methods rely on impedance mismatch or active noise cancellation, but the proposed method uses a passive branch with matched impedance to suppress the CM current. An external inductor is connected between the transistor drain and middle of input dc bus before EMI filter. A Wheatstone bridge is then identified in the CM equivalent circuit of the converter with these additional components. By selecting the inductor value properly the Wheatstone bridge will be balanced and results in suppression of the input CM current. The analysis shows that the presented method can guarantee the required attenuation for CM conduction noise. Finally, a comparison between the balanced and unbalanced structure is presented using computer simulation by Pspice.

PL

W artykule zaprezentowano nową metodę redukcji składowej wspólnej elektromagnetycznych interferencji w przekształtniku typu boost. W metodzie zastosowano pasywny układ do dopasowania impedancji w celu zmniejszenia składowej wspólnej prądu. Wstawiony w układ mostka dławik umożliwia zrównoważenie tego mostka.

Słowa kluczowe

EN

electromagnetic interference; common mode; parasitic capacitance; impedance balancing

PL

interferencja elektromagnetyczna; składowa wspólna; kompresja szumu; przekształtnik boost

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2015
• Tom: R. 91, nr 10
• Strony: 144--147
• Opis fizyczny: Bibliogr. 10 poz., rys., wykr., tab.

Twórcy

autor

Rahmati A.

• Faculty of Electrical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran

autor

Abrishamifar A.

• Faculty of Electrical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran

autor

Skandarnezhad A.

• Faculty of Electrical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran

Bibliografia

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• [8] Xing L., Sun J., Conducted common-mode EMI reduction by impedance balancing, IEEE Trans. on P. E., Vol. 27, No. 3, 2012, 1084-1089.
• [9] Shih F.Y., Chen D.Y., Wu Y.P., Chen Y.T., A procedure for designing EMI filters for AC line applications, IEEE Trans. on P. E., Vol. 11, No. 1, 1996, 170-181.
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