Synthesizing power electronic switching waveforms for reduced EMI generation

Niall Oswald; Bernard Stark; Colin Hargis; Bill Drury; Derrick Holliday

doi:10.1049/cp.2010.0176

Synthesizing power electronic switching waveforms for reduced EMI generation

Niall Oswald, Bernard Stark, Colin Hargis, Bill Drury, Derrick Holliday

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper

Abstract

A method of analysing switching waveforms using their derivative terms shows that imposing an ‘S-shaped’ profile on the switching transitions offers significant improvements in the control of power loss and radiated EMI in power converters. Numerical modelling to investigate the effects of varying the timing parameters of the waveforms enables switching transients to be shaped to reduce high-frequency spectral content. The resulting synthesized waveforms are used to demonstrate experimentally that total high-frequency power content is reduced without any associated increase in switching time and therefore power loss.

Original language	English
Number of pages	6
DOIs	https://doi.org/10.1049/cp.2010.0176
Publication status	Published - Apr 2012
Event	5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010) - Brighton, United Kingdom Duration: 19 Apr 2010 → 21 Apr 2010

Conference

Conference	5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010)
Country	United Kingdom
City	Brighton
Period	19/04/10 → 21/04/10

Keywords

power electronics
EMI
synthesizing
electronic switching
waveforms
reduced emi generation

Access to Document

10.1049/cp.2010.0176

http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5522484

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abstract = "A method of analysing switching waveforms using their derivative terms shows that imposing an {\textquoteleft}S-shaped{\textquoteright} profile on the switching transitions offers significant improvements in the control of power loss and radiated EMI in power converters. Numerical modelling to investigate the effects of varying the timing parameters of the waveforms enables switching transients to be shaped to reduce high-frequency spectral content. The resulting synthesized waveforms are used to demonstrate experimentally that total high-frequency power content is reduced without any associated increase in switching time and therefore power loss.",

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AU - Oswald, Niall

AU - Stark, Bernard

AU - Hargis, Colin

AU - Drury, Bill

AU - Holliday, Derrick

PY - 2012/4

Y1 - 2012/4

N2 - A method of analysing switching waveforms using their derivative terms shows that imposing an ‘S-shaped’ profile on the switching transitions offers significant improvements in the control of power loss and radiated EMI in power converters. Numerical modelling to investigate the effects of varying the timing parameters of the waveforms enables switching transients to be shaped to reduce high-frequency spectral content. The resulting synthesized waveforms are used to demonstrate experimentally that total high-frequency power content is reduced without any associated increase in switching time and therefore power loss.

AB - A method of analysing switching waveforms using their derivative terms shows that imposing an ‘S-shaped’ profile on the switching transitions offers significant improvements in the control of power loss and radiated EMI in power converters. Numerical modelling to investigate the effects of varying the timing parameters of the waveforms enables switching transients to be shaped to reduce high-frequency spectral content. The resulting synthesized waveforms are used to demonstrate experimentally that total high-frequency power content is reduced without any associated increase in switching time and therefore power loss.

KW - power electronics

KW - EMI

KW - synthesizing

KW - electronic switching

KW - waveforms

KW - reduced emi generation

UR - http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5522484

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Y2 - 19 April 2010 through 21 April 2010

ER -