A New Topology of DC-DC Converter Based On Piezoelectric Resonator

Operating Frequency Prediction of Piezoelectric DC–DC Converters

“…This letter describes how to calculate the coefficient α, the PR current amplitude Im, the switching angles xi [3] for any 6phases PRC topologies. This method is applied to various PRC topologies used in previous articles [2,4,5] and proves that the proposed model is in good agreement with experimental results. Other benefits of this modelling are also discussed e.g.…”

“…The PRC operating principle is well described in [2][3][4][5]. To summarize and introduce the model's notations, this letter reminds some notions in this first section.…”

“…Promising experimental results show 10's W/cm 3 power density while maintaining high efficiency (>95%) at relatively low frequency (~100 kHz) [2,3]. [2,4] have already associated a self-tracking feedback to control each phase for sub-MHz operating range. [4,5] have also proven the performance of the PR in MHz range, showing the capability to scale-down with frequency.…”

“…[2,4] have already associated a self-tracking feedback to control each phase for sub-MHz operating range. [4,5] have also proven the performance of the PR in MHz range, showing the capability to scale-down with frequency. [5,10] point out the main performance criteria of PR converters: high electromechanical coupling and high mechanical quality factors.…”

“…[5,10] point out the main performance criteria of PR converters: high electromechanical coupling and high mechanical quality factors. The mentioned challenges are mainly the control of switching instants at high frequency [4] and the reduction of spurious resonant modes [2,5]. To help the designer to explore the PRC performance, an accurate prediction of switching cycle timing at early design stages is required.…”