Parallel connection of resonant converters based on piezoelectric transformers

Parallel connection of resonant converters based on piezoelectric transformers

One of the most important advantages in using piezoelectric transformers (PT) is that they operate at high frequencies with a very good efficiency, tipically higher than 95%. This paper presents a DC/DC converter based on two piezoelectric transformers which duplicates the output voltage frequency r...

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Bibliographische Detailangaben
Hauptverfasser: Angel, Jose-Prieto Miguel, Juan, Diaz, Fernando, Nuno, David, Gacio, Villegas, Pedro J.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Band pass filters
Ceramics
DC-DC power converters
Equivalent circuits
Frequency conversion
Piezo Actuators
Power harmonic filters
Resonance
Resonant Converter
Switching frequency
Transformers
Vibrations
ZVS Converter
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Zusammenfassung:One of the most important advantages in using piezoelectric transformers (PT) is that they operate at high frequencies with a very good efficiency, tipically higher than 95%. This paper presents a DC/DC converter based on two piezoelectric transformers which duplicates the output voltage frequency ripple, maintaining the switching frequency. Also, the converter operates at a fixed frequency, and an alternative way to regulate the output power is shown. The converter is achieved by parallelizing two DC/DC converters, based on piezoelectric transformers. Of course, the size is increased, but on the other hand, the efficiency and the output ripple are improved. The obtained results evince an improvement in the overall efficiency, as well as a reduction in the output filter size, with a lower voltage ripple.