IEEE Africon '11 2011
DOI: 10.1109/afrcon.2011.6072057
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The effect of leakage inductance and snubbing on electromagnetic interference generated by a flyback converter

Abstract: Leakage inductance is known to affect power transfer of transformers and coupled inductors, as well as causing voltage spikes across converter switches possibly damaging them. The standard solution is to implement a snubber to reduce these voltage spikes. This paper investigates the effects of leakage inductance as well as snubbing on conducted EMI emissions.

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Cited by 10 publications
(6 citation statements)
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“…The flyback converter is a topology of the power supply that utilizes a mutually connected inductor to store energy as the current moves and release the energy when the power is withdrawn. Flyback converter is commonly used in designing DC converter, primarily due to its simplicity of using only one low side switch as well as isolation between the primary and secondary [4]. However, the primary winding of the transformer takes the role of the inductor, while the secondary produces the output.…”
Section: Dc-dc Converter: Theoretical Background and Operation Of Fly...mentioning
confidence: 99%
See 1 more Smart Citation
“…The flyback converter is a topology of the power supply that utilizes a mutually connected inductor to store energy as the current moves and release the energy when the power is withdrawn. Flyback converter is commonly used in designing DC converter, primarily due to its simplicity of using only one low side switch as well as isolation between the primary and secondary [4]. However, the primary winding of the transformer takes the role of the inductor, while the secondary produces the output.…”
Section: Dc-dc Converter: Theoretical Background and Operation Of Fly...mentioning
confidence: 99%
“…Some noises occurred from parasitic and leakage elements in the converter due to its operation at a relatively high frequency in the range of 100 kHz compared to a 50 Hz transformer with hard switching. The sources of noise have been tracked in order to reduce their impact on performance [4].…”
Section: Introductionmentioning
confidence: 99%
“…But, due to Int J Pow Elec & Dri Syst ISSN: 2088-8694  leakage inductance property, the input current becomes discontinues and self-induced electromagnetic force (EMF) affects the performance of the converter output. And also, these types normally create electromagnetic interferences and additional snubbed circuit must be employed to arrest this EMI noise [11], [12]. Parastar and Seok [13] introduced high gain converter with cascaded configuration is proposed.…”
Section: Introductionmentioning
confidence: 99%
“…For a converter electromagnetic compatibility (EMC) analysis, if calculation speed is preferred over high precision, a technique based on the state vector approach and a simple switch device model has been proposed in [9, 10]. Experimental flyback converter study in [11] signalled a turn‐off ringing phenomena mainly caused by the resonant oscillating of transformer leakage inductance with the MOSFET's output capacitance. To verify above observation in a quantitative manner, in this paper fast and accurate method of ringing frequency identification has been considered.…”
Section: Introductionmentioning
confidence: 99%