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dc.contributor.authorDavari, P.
dc.contributor.authorGhasemi, N.
dc.contributor.authorzare, F.
dc.contributor.authorO'Shea, P.
dc.contributor.authorGhosh, Arindam
dc.date.accessioned2017-01-30T13:54:54Z
dc.date.available2017-01-30T13:54:54Z
dc.date.created2014-10-08T01:14:51Z
dc.date.issued2012
dc.identifier.citationDavari, P. and Ghasemi, N. and zare, F. and O'Shea, P. and Ghosh, A. 2012. Improving the efficiency of high power piezoelectric transducers for industrial applications. IET Science, Measurement and Technology. 6 (4): pp. 213-221.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/36291
dc.description.abstract

Most high-power ultrasound applications are driven by two-level inverters. However, the broad spectral content of the two-level pulse results in undesired harmonics that can decrease the performance of the system significantly. On the other hand, it is crucial to excite the piezoelectric devices at their main resonant frequency in order to have maximum energy conversion. Therefore a high-quality, low-distorted power signal is needed to excite the high-power piezoelectric transducer at its resonant frequency. This study proposes an efficient approach to develop the performance of high-power ultrasonic applications using multilevel inverters along with a frequency estimation algorithm. In this method, the resonant frequencies are estimated based on relative minimums of the piezoelectric impedance frequency response. The algorithm follows the resonant frequency variation and adapts the multilevel inverter reference frequency to drive an ultrasound transducer at high power. Extensive simulation and experimental results indicate the effectiveness of the proposed approach.

dc.publisherInstitution of Engineering and Technology
dc.titleImproving the efficiency of high power piezoelectric transducers for industrial applications
dc.typeJournal Article
dcterms.source.volume6
dcterms.source.number4
dcterms.source.startPage213
dcterms.source.endPage221
dcterms.source.issn17518822
dcterms.source.titleIET Science, Measurement and Technology
curtin.accessStatusFulltext not available


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