Small-signal modeling of a DC-DC Class-E piezoconverter based on generalized averaging method

Author

Engleitner, R. ; Bisogno, F.E. ; Pinheiro, J.R. ; Rech, C. ; Michels, L. ; Radecker, M.

Author_Institution

Power Electron. & Control Res. Group-GEPOC, Fed. Univ. of Santa Maria-UFSM, Santa Maria, Brazil

fYear

2011

fDate

27-30 June 2011

Firstpage

396

Lastpage

401

Abstract

In this paper, a new small-signal model for the Class-E DC-DC converter with piezoelectric transformer is presented. The model was obtained using the generalized averaging method, through Fourier harmonics approximation. The model describes all poles and zeros of the system, being accurate for heavy and light loads. The converter was suppose to work under Zero Voltage Switching conditions, and this information was used to simplify the model derivation. Experimental frequency responses demonstrate similar results with the presented model, what validates the method for a higher order resonant converter. The measurements were achieved for a 3W step-down converter, with universal 85-265 V AC input and 6 V DC output voltages.

Keywords

DC-DC power convertors; poles and zeros; power transformers; resonant power convertors; zero voltage switching; DC-DC class-E piezoconverter; Fourier harmonics approximation; frequency response; generalized averaging method; piezoelectric transformer; poles and zeros; power 3 W; resonant converter; small-signal modeling; step-down converter; zero voltage switching; Harmonic analysis; Integrated circuit modeling; Load modeling; Mathematical model; Power harmonic filters; Switches; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics (ISIE), 2011 IEEE International Symposium on

Conference_Location

Gdansk

ISSN

Pending

Print_ISBN

978-1-4244-9310-4

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/ISIE.2011.5984191

Filename

5984191