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    A high frequency current source converter with adjustable magnitude to drive high power piezoelectric transducers

    Access Status
    Fulltext not available
    Authors
    Ghasemi, N.
    zare, F.
    Ghosh, Arindam
    Langton, C.
    Date
    2012
    Type
    Conference Paper
    
    Metadata
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    Citation
    Ghasemi, N. and zare, F. and Ghosh, A. and Langton, C. 2012. A high frequency current source converter with adjustable magnitude to drive high power piezoelectric transducers, in Vladimir Katic General Chairman (ed), 2012 15th International Power Electronics and Motion Control Conference, Sep 4 2012, pp. DS1b.51-DS1b.54. Serbia: Institute of Electrical and Electronics Engineers ( IEEE ).
    Source Title
    2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC 2012)
    Source Conference
    2012 15th International Power Electronics and Motion Control Conference
    ISBN
    978-1-4673-1970-6
    URI
    http://hdl.handle.net/20.500.11937/26353
    Collection
    • Curtin Research Publications
    Abstract

    A general electrical model of a piezoelectric transducer for ultrasound applications consists of a capacitor in parallel with RLC legs. A high power voltage source converter can however generate significant voltage stress across the transducer that creates high leakage currents. One solution is to reduce the voltage stress across the piezoelectric transducer by using an LC filter, however a main drawback is changing the piezoelectric resonant frequency and its characteristics. Thereby it reduces the efficiency of energy conversion through the transducer. This paper proposes that a high frequency current source converter is a suitable topology to drive high power piezoelectric transducers efficiently.

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