Parameterized Analysis of Zero Voltage Switching in Resonant Converters for Optimal Electrode Layout of Piezoelectric Transformers

Kaspar Sinding Meyer; Michael Andreas E. Andersen; Flemming Jensen

doi:10.1109/PESC.2008.4592323

Parameterized Analysis of Zero Voltage Switching in Resonant Converters for Optimal Electrode Layout of Piezoelectric Transformers

Kaspar Sinding Meyer, Michael Andreas E. Andersen, Flemming Jensen

Noliac A/S

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

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Abstract

Ring shaped PTs (Piezoelectric Transformers) are an attractive alternative to magnetics in power converters. The achievable energy efficiency is 98% and the power density is up to 30W/cm3. Additionally power supplies based on PTs display low levels of conducted and radiated EMI due to power conversion based on the piezoelectric effect. Rooted in the physics of this effect, both the in- and output terminal of a PT has a noticeable parasitic capacitance. In a common half-bridge power stage without any supporting magnetic components, the input parasitic capacitance can lead to hard switching losses that are in the range of the actual power rating of a specific PT. In this paper it is demonstrated how the electrode layout of a PT can be designed to enable ZVS (Zero Voltage Switching). This optimization is made simple with a novel set of accurate and simple symbolic equations which relates ZVS constraints to the physical electrode layout of a PT. These properties takes basis in the formulation of an equivalent electrical PT circuit that is valid around the frequency of operation.

Original language	English
Title of host publication	39th IEEE Annual Power Electronics Specialists Conference
Publisher	IEEE
Publication date	2008
Pages	2543-2548
ISBN (Print)	978-1-4244-1668-4
DOIs	https://doi.org/10.1109/PESC.2008.4592323
Publication status	Published - 2008
Event	39th IEEE Annual Power Electronics Specialists Conference - Rhodes, Greece Duration: 15 Jun 2008 → 19 Jun 2008 Conference number: 39 http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4591877&tag=1

Conference

Conference	39th IEEE Annual Power Electronics Specialists Conference
Number	39
Country/Territory	Greece
City	Rhodes
Period	15/06/2008 → 19/06/2008
Internet address	http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4591877&tag=1

Bibliographical note

Copyright: 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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@inproceedings{d359589e96d44b30b1a224dd338f7864,

title = "Parameterized Analysis of Zero Voltage Switching in Resonant Converters for Optimal Electrode Layout of Piezoelectric Transformers",

abstract = "Ring shaped PTs (Piezoelectric Transformers) are an attractive alternative to magnetics in power converters. The achievable energy efficiency is 98% and the power density is up to 30W/cm3. Additionally power supplies based on PTs display low levels of conducted and radiated EMI due to power conversion based on the piezoelectric effect. Rooted in the physics of this effect, both the in- and output terminal of a PT has a noticeable parasitic capacitance. In a common half-bridge power stage without any supporting magnetic components, the input parasitic capacitance can lead to hard switching losses that are in the range of the actual power rating of a specific PT. In this paper it is demonstrated how the electrode layout of a PT can be designed to enable ZVS (Zero Voltage Switching). This optimization is made simple with a novel set of accurate and simple symbolic equations which relates ZVS constraints to the physical electrode layout of a PT. These properties takes basis in the formulation of an equivalent electrical PT circuit that is valid around the frequency of operation.",

author = "Meyer, {Kaspar Sinding} and Andersen, {Michael Andreas E.} and Flemming Jensen",

note = "Copyright: 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; 39th IEEE Annual Power Electronics Specialists Conference, PESC 2008 ; Conference date: 15-06-2008 Through 19-06-2008",

year = "2008",

doi = "10.1109/PESC.2008.4592323",

language = "English",

isbn = "978-1-4244-1668-4",

pages = "2543--2548",

booktitle = "39th IEEE Annual Power Electronics Specialists Conference",

publisher = "IEEE",

address = "United States",

url = "http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4591877&tag=1",

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Meyer, KS, Andersen, MAE & Jensen, F 2008, Parameterized Analysis of Zero Voltage Switching in Resonant Converters for Optimal Electrode Layout of Piezoelectric Transformers. in 39th IEEE Annual Power Electronics Specialists Conference. IEEE, pp. 2543-2548, 39th IEEE Annual Power Electronics Specialists Conference, Rhodes, Greece, 15/06/2008. https://doi.org/10.1109/PESC.2008.4592323

Parameterized Analysis of Zero Voltage Switching in Resonant Converters for Optimal Electrode Layout of Piezoelectric Transformers. / Meyer, Kaspar Sinding; Andersen, Michael Andreas E.; Jensen, Flemming.
39th IEEE Annual Power Electronics Specialists Conference. IEEE, 2008. p. 2543-2548.

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

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AU - Andersen, Michael Andreas E.

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N2 - Ring shaped PTs (Piezoelectric Transformers) are an attractive alternative to magnetics in power converters. The achievable energy efficiency is 98% and the power density is up to 30W/cm3. Additionally power supplies based on PTs display low levels of conducted and radiated EMI due to power conversion based on the piezoelectric effect. Rooted in the physics of this effect, both the in- and output terminal of a PT has a noticeable parasitic capacitance. In a common half-bridge power stage without any supporting magnetic components, the input parasitic capacitance can lead to hard switching losses that are in the range of the actual power rating of a specific PT. In this paper it is demonstrated how the electrode layout of a PT can be designed to enable ZVS (Zero Voltage Switching). This optimization is made simple with a novel set of accurate and simple symbolic equations which relates ZVS constraints to the physical electrode layout of a PT. These properties takes basis in the formulation of an equivalent electrical PT circuit that is valid around the frequency of operation.

AB - Ring shaped PTs (Piezoelectric Transformers) are an attractive alternative to magnetics in power converters. The achievable energy efficiency is 98% and the power density is up to 30W/cm3. Additionally power supplies based on PTs display low levels of conducted and radiated EMI due to power conversion based on the piezoelectric effect. Rooted in the physics of this effect, both the in- and output terminal of a PT has a noticeable parasitic capacitance. In a common half-bridge power stage without any supporting magnetic components, the input parasitic capacitance can lead to hard switching losses that are in the range of the actual power rating of a specific PT. In this paper it is demonstrated how the electrode layout of a PT can be designed to enable ZVS (Zero Voltage Switching). This optimization is made simple with a novel set of accurate and simple symbolic equations which relates ZVS constraints to the physical electrode layout of a PT. These properties takes basis in the formulation of an equivalent electrical PT circuit that is valid around the frequency of operation.

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Parameterized Analysis of Zero Voltage Switching in Resonant Converters for Optimal Electrode Layout of Piezoelectric Transformers

Abstract

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