OPTIMIZATION OF THE PARAMETERS OF DISK-SHAPED PIEZOELECTRIC TRANSFORMERS

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  • TITLE: OPTIMIZATION OF THE PARAMETERS OF DISK-SHAPED PIEZOELECTRIC TRANSFORMERS
  • AUTHOR(S): Z. Nenova, N. Nedev, T. Nenov
  • ABSTRACT: This paper presents a study of the impact of the width b and displacement l of the linear isolation gap between the electrodes of disk-shaped piezoelectric transformers on their characteristics and the maximum voltage gain GVm in accordance with an optimal composed design of the experiment. The effect of the load resistance Rt on piezoelectric transformer parameters has also been studied. A regression model of full second degree has been derived for the maximum voltage gain of disk-shaped piezoelectric transformers with linear isolation gap. On the basis of this model, employing a genetic algorithm, optimal values of parameters b and l of the isolation gap have been obtained in order to reach the maximum value of GVm of disk-shaped piezoelectric transformers. The maximum voltage gain of the optimal sample obtained by experiment is in good agreement with the theoretically determined maximum value of this parameter.
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