Nonlinear Effects in Piezoelectric Transformers Explained by Thermal-Electric Model Based on a Hypothesis of Self-Heating

Thomas Andersen; Michael A. E. Andersen; Ole Cornelius Thomsen; M. P. Foster; D. A. Stone

doi:10.1109/IECON.2012.6388760

Nonlinear Effects in Piezoelectric Transformers Explained by Thermal-Electric Model Based on a Hypothesis of Self-Heating

Thomas Andersen, Michael A. E. Andersen, Ole Cornelius Thomsen, M. P. Foster, D. A. Stone

University of Sheffield

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

As the trend within power electronic still goes in the direction of higher power density and higher efficiency, it is necessary to develop new topologies and push the limit for the existing technology. Piezoelectric transformers are a fast developing technology to improve efficiency and increase power density of power converters. Nonlinearities in piezoelectric transformers occur when the power density is increased enough. The simple linear equations are not valid at this point and more complex theory of electro elasticity must be applied. In This work a simplified thermo-electric model is developed to explain nonlinearities as voltage jumps and voltage saturation and thereby avoid the complex theory of electro elasticity. The model is based on the hypothesis of self-heating and tested with measurements with good correlation.

Original language	English
Title of host publication	IECON 2012 : 38th Annual Conference on IEEE Industrial Electronics Society
Publisher	IEEE
Publication date	2012
Pages	596-601
ISBN (Print)	978-1-4673-2420-5
DOIs	https://doi.org/10.1109/IECON.2012.6388760
Publication status	Published - 2012
Event	38th Annual Conference of the IEEE Industrial Electronics Society - École de technologie supérieure, Montreal, Canada Duration: 25 Jun 2012 → 28 Jun 2012 http://www.iecon2012.org/index.html

Conference

Conference	38th Annual Conference of the IEEE Industrial Electronics Society
Location	École de technologie supérieure
Country/Territory	Canada
City	Montreal
Period	25/06/2012 → 28/06/2012
Internet address	http://www.iecon2012.org/index.html

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10.1109/IECON.2012.6388760

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title = "Nonlinear Effects in Piezoelectric Transformers Explained by Thermal-Electric Model Based on a Hypothesis of Self-Heating",

abstract = "As the trend within power electronic still goes in the direction of higher power density and higher efficiency, it is necessary to develop new topologies and push the limit for the existing technology. Piezoelectric transformers are a fast developing technology to improve efficiency and increase power density of power converters. Nonlinearities in piezoelectric transformers occur when the power density is increased enough. The simple linear equations are not valid at this point and more complex theory of electro elasticity must be applied. In This work a simplified thermo-electric model is developed to explain nonlinearities as voltage jumps and voltage saturation and thereby avoid the complex theory of electro elasticity. The model is based on the hypothesis of self-heating and tested with measurements with good correlation.",

author = "Thomas Andersen and Andersen, {Michael A. E.} and Thomsen, {Ole Cornelius} and Foster, {M. P.} and Stone, {D. A.}",

year = "2012",

doi = "10.1109/IECON.2012.6388760",

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pages = "596--601",

booktitle = "IECON 2012",

publisher = "IEEE",

address = "United States",

note = "38th Annual Conference of the IEEE Industrial Electronics Society , IECON 2012 ; Conference date: 25-06-2012 Through 28-06-2012",

url = "http://www.iecon2012.org/index.html",

}

Andersen, T, Andersen, MAE, Thomsen, OC, Foster, MP & Stone, DA 2012, Nonlinear Effects in Piezoelectric Transformers Explained by Thermal-Electric Model Based on a Hypothesis of Self-Heating. in IECON 2012: 38th Annual Conference on IEEE Industrial Electronics Society . IEEE, pp. 596-601, 38th Annual Conference of the IEEE Industrial Electronics Society , Montreal, Canada, 25/06/2012. https://doi.org/10.1109/IECON.2012.6388760

Nonlinear Effects in Piezoelectric Transformers Explained by Thermal-Electric Model Based on a Hypothesis of Self-Heating. / Andersen, Thomas; Andersen, Michael A. E.; Thomsen, Ole Cornelius et al.
IECON 2012: 38th Annual Conference on IEEE Industrial Electronics Society . IEEE, 2012. p. 596-601.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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T1 - Nonlinear Effects in Piezoelectric Transformers Explained by Thermal-Electric Model Based on a Hypothesis of Self-Heating

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AU - Foster, M. P.

AU - Stone, D. A.

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N2 - As the trend within power electronic still goes in the direction of higher power density and higher efficiency, it is necessary to develop new topologies and push the limit for the existing technology. Piezoelectric transformers are a fast developing technology to improve efficiency and increase power density of power converters. Nonlinearities in piezoelectric transformers occur when the power density is increased enough. The simple linear equations are not valid at this point and more complex theory of electro elasticity must be applied. In This work a simplified thermo-electric model is developed to explain nonlinearities as voltage jumps and voltage saturation and thereby avoid the complex theory of electro elasticity. The model is based on the hypothesis of self-heating and tested with measurements with good correlation.

AB - As the trend within power electronic still goes in the direction of higher power density and higher efficiency, it is necessary to develop new topologies and push the limit for the existing technology. Piezoelectric transformers are a fast developing technology to improve efficiency and increase power density of power converters. Nonlinearities in piezoelectric transformers occur when the power density is increased enough. The simple linear equations are not valid at this point and more complex theory of electro elasticity must be applied. In This work a simplified thermo-electric model is developed to explain nonlinearities as voltage jumps and voltage saturation and thereby avoid the complex theory of electro elasticity. The model is based on the hypothesis of self-heating and tested with measurements with good correlation.

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T2 - 38th Annual Conference of the IEEE Industrial Electronics Society

Y2 - 25 June 2012 through 28 June 2012

ER -

Nonlinear Effects in Piezoelectric Transformers Explained by Thermal-Electric Model Based on a Hypothesis of Self-Heating

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