A new control strategy for an AC/DC converter based on a piezoelectric transformer

Piezoelectric transformers (PTs) are an attractive solution to reduce size and weight in ac/dc converters. In this paper, a PT-based topology is presented together with a control method. As an application, an 8-W ac/dc adapter (110 V/sub AC/ input, 12 V/sub DC/ output) is presented operating at freq...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2004-08, Vol.51 (4), p.850-856
Main Authors: Diaz, J., Nuno, F., Lopera, J.M., Martin-Ramos, J.A.
Format: Article
Language:English
Subjects:
Adapters
Capacitance
Capacitors
Circuit topology
Converters
DC-DC power converters
Direct current
Electric converters
Equivalent circuits
Filters
Frequency
Inductors
Piezoelectricity
Resonance
Strategy
Switches
Transformers
Weight reduction
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Description
Summary:Piezoelectric transformers (PTs) are an attractive solution to reduce size and weight in ac/dc converters. In this paper, a PT-based topology is presented together with a control method. As an application, an 8-W ac/dc adapter (110 V/sub AC/ input, 12 V/sub DC/ output) is presented operating at frequencies around 500 kHz.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2004.831739