Efficiency modeling and evaluation of a resonant snubber based soft- switching inverter for motor drive applications

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This paper establishes an analytical model for a resonant snubber based soft-switching inverter. The model adopts loss separation method to evaluate losses in individual components. Because of symmetry of the inverter circuit, the developed model is suitable for both single-phase and three-phase inverters. A single-phase inverter was built and tested with a single-phase induction motor driving a fan load to verify the developed model. The equivalent single-phase induction motor model was curve-fitted from experiment. Analytical results showed reasonable agreement with experiment. The same efficiency evaluation method was then applied to the conventional hard-switching inverter, and the results were compared with ... continued below

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8 p.

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Lai, J.S.; Young, R.W. & Ott, G.W. December 31, 1995.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 32 times . More information about this article can be viewed below.

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Description

This paper establishes an analytical model for a resonant snubber based soft-switching inverter. The model adopts loss separation method to evaluate losses in individual components. Because of symmetry of the inverter circuit, the developed model is suitable for both single-phase and three-phase inverters. A single-phase inverter was built and tested with a single-phase induction motor driving a fan load to verify the developed model. The equivalent single-phase induction motor model was curve-fitted from experiment. Analytical results showed reasonable agreement with experiment. The same efficiency evaluation method was then applied to the conventional hard-switching inverter, and the results were compared with that of the soft-switching inverter. The resonant snubber base soft-switching inverter shows substantial efficiency improvement over the hard switching PWM (pulse-width-modulation) inverter, especially in low speed operation.

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8 p.

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OSTI as DE96008582

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  • Power electronics specialist conference, Atlanta, GA (United States), 12-15 Jun 1995

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  • Other: DE96008582
  • Report No.: CONF-950610--2
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 217730
  • Archival Resource Key: ark:/67531/metadc670546

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Jan. 19, 2016, 1:02 p.m.

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Lai, J.S.; Young, R.W. & Ott, G.W. Efficiency modeling and evaluation of a resonant snubber based soft- switching inverter for motor drive applications, article, December 31, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc670546/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.