A delta configured auxiliary resonant snubber inverter

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A delta ({Delta}) configured auxiliary resonant snubber inverter is developed to overcome the voltage floating problem in a wye (Y) configured resonant snubber inverter. The proposed inverter is to connect auxiliary resonant branches between phase outputs to avoid a floating point voltage which may cause over-voltage failure of the auxiliary switches. Each auxiliary branch consists of a resonant inductor and a reverse blocking auxiliary switch. Instead of using an anti-paralleled diode to allow resonant current to flow in the reverse direction, as in the Y-configured version, the resonant branch in the {Delta}-configured version must block the negative voltage, typically done ... continued below

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7 p.

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Lai, J.S.; Young, R.W.; Ott, G.W. Jr.; McKeever, J.W. & Peng, F.Z. September 1, 1995.

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Description

A delta ({Delta}) configured auxiliary resonant snubber inverter is developed to overcome the voltage floating problem in a wye (Y) configured resonant snubber inverter. The proposed inverter is to connect auxiliary resonant branches between phase outputs to avoid a floating point voltage which may cause over-voltage failure of the auxiliary switches. Each auxiliary branch consists of a resonant inductor and a reverse blocking auxiliary switch. Instead of using an anti-paralleled diode to allow resonant current to flow in the reverse direction, as in the Y-configured version, the resonant branch in the {Delta}-configured version must block the negative voltage, typically done by a series diode. This paper shows single-phase and three-phase versions of {Delta}-configured resonant snubber inverters and describes in detail the operating principle of a single-phase version. The extended three-phase version is proposed with non-adjacent state space vector modulation. For hardware implementation, a single-phase 1-kW unit and a three-phase 100-kW unit were built to prove the concept. Experimental results show the superiority of the proposed topology.

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7 p.

Notes

OSTI as DE95017435

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  • IEEE/Industrial Application Society conference, Orlando, FL (United States), 8-12 Oct 1995

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  • Other: DE95017435
  • Report No.: CONF-9510203--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 102174
  • Archival Resource Key: ark:/67531/metadc622786

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  • September 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Jan. 19, 2016, 12:37 p.m.

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Lai, J.S.; Young, R.W.; Ott, G.W. Jr.; McKeever, J.W. & Peng, F.Z. A delta configured auxiliary resonant snubber inverter, article, September 1, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc622786/: accessed September 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.