Evaluating the reduction in snubbing with soft-recovery devices and the effect of resistor inductance

Francis Robinson; Barry Williams

doi:10.1109/IAS.1990.152413

Evaluating the reduction in snubbing with soft-recovery devices and the effect of resistor inductance

Department of Electronic & Electrical Engineering

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

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Abstract

The effects of current-fall shapes on RC-snubber performance are examined to determine if smaller snubbers that remain tolerant to varying current-fall shapes and durations and give lower power-losses can be used. The effects of component imperfections on RC-snubber performance, the optimization of RC-snubbers with nonabrupt current-falls, the sensitivity of nonabrupt snubbers to current-fall variations, and the energy losses associated with nonabrupt snubbers are discussed. It is shown that finely tuning RC-snubber components to take into account nonabrupt current fall, allows reduced snubber capacitance to be used under certain operating conditions. However, voltage-responses become more sensitive to current-fall shape, diode switching-loss is increased by several orders of magnitude, and there appears to be no significant energy-loss advantage with sinusoidally modulated current.

Original language	English
Title of host publication	Conference Record of the Industry Applications Society Annual Meeting
Place of Publication	Seattle, USA
Publisher	IEEE
Pages	1686-1694
Number of pages	9
Volume	2
ISBN (Print)	0-87942-553-9
DOIs	https://doi.org/10.1109/IAS.1990.152413
Publication status	Published - 7 Oct 1990
Event	1990 IEEE Industry Applications Society Annual Meeting - Seattle, USA United States Duration: 7 Oct 1990 → 12 Oct 1990

Conference

Conference	1990 IEEE Industry Applications Society Annual Meeting
Country/Territory	USA United States
City	Seattle
Period	7/10/90 → 12/10/90

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10.1109/IAS.1990.152413

Evaluating the reduction in snubbing with soft-recovery devices and the effect of resistor inductance
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Evaluating the reduction in snubbing with soft-recovery devices and the effect of resistor inductance. / Robinson, Francis; Williams, Barry.
Conference Record of the Industry Applications Society Annual Meeting. Vol. 2 Seattle, USA: IEEE, 1990. p. 1686-1694.

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Robinson, F & Williams, B 1990, Evaluating the reduction in snubbing with soft-recovery devices and the effect of resistor inductance. in Conference Record of the Industry Applications Society Annual Meeting. vol. 2, IEEE, Seattle, USA, pp. 1686-1694, 1990 IEEE Industry Applications Society Annual Meeting, Seattle, USA United States, 7/10/90. https://doi.org/10.1109/IAS.1990.152413

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abstract = "The effects of current-fall shapes on RC-snubber performance are examined to determine if smaller snubbers that remain tolerant to varying current-fall shapes and durations and give lower power-losses can be used. The effects of component imperfections on RC-snubber performance, the optimization of RC-snubbers with nonabrupt current-falls, the sensitivity of nonabrupt snubbers to current-fall variations, and the energy losses associated with nonabrupt snubbers are discussed. It is shown that finely tuning RC-snubber components to take into account nonabrupt current fall, allows reduced snubber capacitance to be used under certain operating conditions. However, voltage-responses become more sensitive to current-fall shape, diode switching-loss is increased by several orders of magnitude, and there appears to be no significant energy-loss advantage with sinusoidally modulated current.",

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AB - The effects of current-fall shapes on RC-snubber performance are examined to determine if smaller snubbers that remain tolerant to varying current-fall shapes and durations and give lower power-losses can be used. The effects of component imperfections on RC-snubber performance, the optimization of RC-snubbers with nonabrupt current-falls, the sensitivity of nonabrupt snubbers to current-fall variations, and the energy losses associated with nonabrupt snubbers are discussed. It is shown that finely tuning RC-snubber components to take into account nonabrupt current fall, allows reduced snubber capacitance to be used under certain operating conditions. However, voltage-responses become more sensitive to current-fall shape, diode switching-loss is increased by several orders of magnitude, and there appears to be no significant energy-loss advantage with sinusoidally modulated current.

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Evaluating the reduction in snubbing with soft-recovery devices and the effect of resistor inductance

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