Feedback isolation by piezoelectric transformers: Comparison of amplitude to frequency modulation

Simon Lineykin, Sam Ben-Yaakov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

Signal isolation is needed in power electronics systems that include separate primary and secondary 'grounds'. The feasibility of using a piezoelectric transformer (PT) as a galvanic barrier was investigated in this study theoretically and experimentally. The research included the issues of drive, demodulation, bandwidth, and common mode rejection. In particular, two types of excitation signals were compared: amplitude modulated and frequency modulated. The frequency response of the piezoelectric isolator was studied by small signal envelope simulation using ORCAD/PSPICE as well as experimentally. It is concluded that the FM approach offers a larger BW but the AM scheme seems to be easier to implement.

Original languageEnglish
Title of host publication2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04
Pages1834-1840
Number of pages7
DOIs
StatePublished - 29 Nov 2004
Event2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04 - Aachen, Germany
Duration: 20 Jun 200425 Jun 2004

Publication series

NamePESC Record - IEEE Annual Power Electronics Specialists Conference
Volume3
ISSN (Print)0275-9306

Conference

Conference2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04
Country/TerritoryGermany
CityAachen
Period20/06/0425/06/04

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