Framework for designing piezoelectric transformers

FPeT is an EPSRC-sponsored research project undertaking research on piezoelectric transformer (PT) based resonant power supplies. The overall objective is to produce a software framework for designing piezoelectric transformers, using a mixture of analytical tools, lumped-parameter models and finite element analysis.

The research encompasses all aspects of piezoelectric transformer design and application. Particular areas of research include

1. Generation of design criteria, rules and processes to fit multiple specfications
2. Design to minimise the deleterious effects of spurious modes
3. Improved lumped-parameter model identification of PTs
4. Converter design to achieve zero-voltage switching and voltage regulation using phase-locked loops
5. Class-E inverters implemented using PTs
6. Power-factor corrected PT-based power supplies
7. Piezoelectric material development for improved performance, includng low-lead materials

FPeT is a collaboration between the Department of Electronic and Electrical Engineering (EEE) and Department of Materials Science and Engineering (MSE) at The University of Sheffield. By combining normally separate disciplines, we are able to symultaneously develop new electrical applications and new materials in a way that would not be possible by one group alone.

The lead investigator is Prof Martin Foster and he is supported by Dr Jonathan Davidson and Prof Dave Stone for the electrical side of the project. Professor Ian Reaney and Prof Derek Sinclair (MSE) are supervising the advanced materials research.

Electrical machines and drives research group

For further information on the group and links to some of its major projects, please see the dedicated website