5–9 Jul 2016
<a href=http://www.sfpalace.com/>Palace Hotel San Francisco</a>
America/Los_Angeles timezone

A Comparison of Piezoelectric Transformer Technologies for HVDC Converter Applications

7 Jul 2016, 13:30
1h 30m
Twin Peaks (Palace Hotel San Francisco)

Twin Peaks

Palace Hotel San Francisco

Poster Presentation Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters Poster 2-A

Speaker

Peter Norgard (University of Missouri)

Description

Piezoelectric transformer-based power converters are ideally suited for uses in applications where compact form factor and high voltage isolation are major considerations. Piezoelectric transformers are resonant electromechanical devices that use mechanical vibrations to induce polarization throughout the bulk of their constituent material. Two types of piezoelectric transformer, one type composed of lithium niobate and the other composed of a lead-zirconate-titanate, were operated into a multi-stage voltage multiplier for a side-by-side comparison. The performance characteristics, including input impedance, output voltage and current, and power conversion efficiency were investigated and reported. The lead-zirconate-titanate transformers exhibited wider input bandwidth, making them suitable for tandem operation from a single source of stimulus, whereas the lithium niobate was able to produce higher voltage with lower losses.

Primary author

Peter Norgard (University of Missouri)

Co-author

Dr Scott Kovaleski (University of Missouri)

Presentation materials

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