Power converters design and analysis for high power piezoelectric ultrasonic transducers

Davari, Pooya, Ghasemi, Negareh, & Zare, Firuz (2014) Power converters design and analysis for high power piezoelectric ultrasonic transducers. In Proceedings of the 16th Conference on Power Electronics and Applications, EPE'14-ECCE Europe, IEEE, Lappeenranta University of Technology, Finland, pp. 1-9.

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High power piezoelectric ultrasonic transducers have been widely exploited in a variety of applications. The critical behaviour of a piezoelectric device is encapsulated in its resonant frequencies because of its maximum transmission performance at these frequencies. Therefore power electronic converters should be tuned at those resonant frequencies to transfer electrical power to mechanical power efficiently. However, structural and environmental changes cause variations in the device resonant frequencies which can degrade the system performance. Hence, estimating the device resonant frequencies within the incorporated setup can significantly improve the system performance.

This paper proposes an efficient resonant frequency estimation approach to maintain the performance of high power ultrasonic applications using the employed power converter. Experimental validations indicate the effectiveness of the proposed method.

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ID Code: 62088
Item Type: Conference Paper
Refereed: Yes
Keywords: Piezo actuators, Transducer, Impedance measurement, Frequency-Domain Analysis, Voltage Source Inverters (VSI)
DOI: 10.1109/EPE.2014.6910986
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 please consult author(s)
Deposited On: 13 Aug 2014 23:15
Last Modified: 29 Oct 2014 01:06

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