Synthesizing power electronic switching waveforms for reduced EMI generation

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

Research output: Contribution to conferencePaper

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.

Conference

Conference5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010)
CountryUnited Kingdom
CityBrighton
Period19/04/1021/04/10

Fingerprint

Power electronics
Power converters
Derivatives

Keywords

  • power electronics
  • EMI
  • synthesizing
  • electronic switching
  • waveforms
  • reduced emi generation

Cite this

Oswald, N., Stark, B., Hargis, C., Drury, B., & Holliday, D. (2012). Synthesizing power electronic switching waveforms for reduced EMI generation. Paper presented at 5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010), Brighton, United Kingdom. https://doi.org/10.1049/cp.2010.0176
Oswald, Niall ; Stark, Bernard ; Hargis, Colin ; Drury, Bill ; Holliday, Derrick. / Synthesizing power electronic switching waveforms for reduced EMI generation. Paper presented at 5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010), Brighton, United Kingdom.6 p.
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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.",
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Oswald, N, Stark, B, Hargis, C, Drury, B & Holliday, D 2012, 'Synthesizing power electronic switching waveforms for reduced EMI generation' Paper presented at 5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010), Brighton, United Kingdom, 19/04/10 - 21/04/10, . https://doi.org/10.1049/cp.2010.0176

Synthesizing power electronic switching waveforms for reduced EMI generation. / Oswald, Niall; Stark, Bernard; Hargis, Colin; Drury, Bill; Holliday, Derrick.

2012. Paper presented at 5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010), Brighton, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Synthesizing power electronic switching waveforms for reduced EMI generation

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

U2 - 10.1049/cp.2010.0176

DO - 10.1049/cp.2010.0176

M3 - Paper

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Oswald N, Stark B, Hargis C, Drury B, Holliday D. Synthesizing power electronic switching waveforms for reduced EMI generation. 2012. Paper presented at 5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010), Brighton, United Kingdom. https://doi.org/10.1049/cp.2010.0176