Improving the efficiency of high power piezoelectric transducers for industrial applications
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...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Institution of Engineering and Technology
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/36291 |
| _version_ | 1848754727628570624 |
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| author | Davari, P. Ghasemi, N. zare, F. O'Shea, P. Ghosh, Arindam |
| author_facet | Davari, P. Ghasemi, N. zare, F. O'Shea, P. Ghosh, Arindam |
| author_sort | Davari, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T08:45:01Z |
| format | Journal Article |
| id | curtin-20.500.11937-36291 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:45:01Z |
| publishDate | 2012 |
| publisher | Institution of Engineering and Technology |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-362912017-02-28T01:49:51Z Improving the efficiency of high power piezoelectric transducers for industrial applications Davari, P. Ghasemi, N. zare, F. O'Shea, P. Ghosh, Arindam 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. 2012 Journal Article http://hdl.handle.net/20.500.11937/36291 Institution of Engineering and Technology restricted |
| spellingShingle | Davari, P. Ghasemi, N. zare, F. O'Shea, P. Ghosh, Arindam Improving the efficiency of high power piezoelectric transducers for industrial applications |
| title | Improving the efficiency of high power piezoelectric transducers for industrial applications |
| title_full | Improving the efficiency of high power piezoelectric transducers for industrial applications |
| title_fullStr | Improving the efficiency of high power piezoelectric transducers for industrial applications |
| title_full_unstemmed | Improving the efficiency of high power piezoelectric transducers for industrial applications |
| title_short | Improving the efficiency of high power piezoelectric transducers for industrial applications |
| title_sort | improving the efficiency of high power piezoelectric transducers for industrial applications |
| url | http://hdl.handle.net/20.500.11937/36291 |