Perancangan Dan Implementasi Passive Emi Filter Pada Switching Mode Power Supply (SMPS)

Kebutuhan akan perangkat elektronik dengan frekuensi yang tinggi menyebabkan meningkatnya jumlah Electromagnetic Interference (EMI) yang memiliki dua jenis yaitu Conducted Emission dan Radiated Emission. Solusi dari mitigasi EMI tersebut adalah dengan menggunakan filter EMI. Switching Mode Power Supply (SMPS) merupakan sumber daya bagi hampir seluruh perangkat elektronik, namun SMPS ini juga sumber EMI untuk perangkat lain atau bahkan perangkat itu sendiri. Banyak perangkat elektronik yang beredar dipasaran namun belum memenuhi standar EMC. Dalam hal ini mitigasi EMI yang dapat dilakukan adalah dengan menggunakan filter EMI eksternal pasif. Dengan filter pasif ini EMI dari SMPS dapat diredam tanpa memerlukan energi tambahan untuk filter itu sendiri. Penelitian ini akan melakukan perancangan filter EMI untuk meredam noise conducted emission menggunakan sebuah passive EMI filter (PEF) pada SMPS. Filter PEF yang telah dirancang dan diujikan dapat digunakan pada SMPS 1 dan SMPS 2 dengan noise conducted emission sebelum filter sebesar 97,86 dBµV yang diredam menjadi 33 dBµV dan menghasilkan redaman noise conducted emission yang sangat baik (hingga 64,86 dBµV) dan memenuhi standar yang ditetapkan (CISPR22 Class B).

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Line filter design of switching mode power supply using software approximation for conducted emission separation

The Fifth International Conference on Power Electronics and Drive Systems, 2003. PEDS 2003. ◽

10.1109/peds.2003.1283175 ◽

2004 ◽

Cited By ~ 2

Author(s):

Yuang-Shung Lee ◽

Yu Shu

Keyword(s):

Power Supply ◽

Filter Design ◽

Conducted Emission ◽

Switching Mode Power Supply ◽

Switching Mode

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Analysis and design of EMI filter for multi-output switching mode power supply

Proceedings of Intelec 94 ◽

10.1109/intlec.1994.396629 ◽

2002 ◽

Author(s):

Zong-Yu He ◽

Fu-Yuan Shih ◽

Yie-Tone Chen ◽

Yan-Pei Wu

Keyword(s):

Power Supply ◽

Analysis And Design ◽

Switching Mode Power Supply ◽

Emi Filter ◽

Switching Mode

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Novel Technologies for Design and Analysis of Switching Mode Power-Supply Circuit Based on Solitary Electromagnetic Wave Theory

ISRN Power Engineering ◽

10.1155/2014/726529 ◽

2014 ◽

Vol 2014 ◽

pp. 1-15

Author(s):

Hirokazu Tohya ◽

Noritaka Toya

Keyword(s):

Electromagnetic Wave ◽

Power Supply ◽

Electromagnetic Interference ◽

Buck Converter ◽

The Novel ◽

Supply Circuit ◽

Novel Technologies ◽

Power Supply Circuit ◽

Switching Mode Power Supply ◽

Switching Mode

The novel solitary electromagnetic wave (SEMW) theory and the novel design methodologies of the switching mode power supply circuit (SMPC) are presented. The SEMW theory was developed as a basic theory of the design of all kinds of the switching mode circuit including SMPC by fusing the physics of semiconductor, nonlinear undulation, and electromagnetic wave. When the SEMW theory is used, the electromagnetic analysis of SMPC becomes possible by using only the real parameters based on the physics. The technologies of the low impedance lossy line (LILL) which is used to the DC line and the matched impedance lossy line (MILL) which is used to the switching line are also presented. They are effective for suppressing the electromagnetic interference. SMPC can be reconfigured to the quasistationary state closed circuit (QSCC) by applying LILL and MILL in accordance with the SEMW theory. No electromagnetic interference exist in QSCC. The buck converter which is one of the most popular DC-DC converters is presented as an example of the method for being reconfigured to QSCC. The conventional design tools which includes SPICE based on the AC circuit theory will be effective for the design and analysis of the inside circuit of QSCC.

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