Modelling and Analysis of Piezoelectric Transformers
نویسندگان
چکیده
Piezoelectric transformers are well known since the end of the 1950s. One of the most prominent applications today is in the backlighting of LCD displays. Key features of piezoelectric transformers, such as light-weight, flatness, high step-up at low volume and high efficiency, make them attractive for a broad range of applications. The present paper first explains the operating principle of piezoelectric transformers and then concentrates on the modeling and analysis of such devices. Recent developments and potential future applications will also be discussed.
منابع مشابه
Generic Operational Characteristics of Piezoelectric Transformers
The universal attributes of piezoelectric transformers (PT) were derived by an approximate analysis that yielded closed form equations relating the normalized load resistance to the voltage gain, output power per unit drive and efficiency. It is suggested that the closed form formulas developed in this study could be invaluable when studying, specifying and designing practical PTs applications.
متن کاملOptimal Estimation of Weibull Distribution Parameters in order to Provide Preventive-Corrective Maintenance Program for Power Transformers
In this paper, a new method for modelling and estimation of reliability parameters of power transformer components in distribution and transmission voltage levels for preventive-corrective maintenance schedule of transformers is proposed. In this method, with optimal estimation of Weibull distribution parameters using least squares method and input data uncertainty reduction, failure rate and p...
متن کاملPiezoelectric Transformers: An Historical Review
Piezoelectric transformers (PTs) are solid-state devices that transform electrical energy into electrical energy by means of a mechanical vibration. These devices are manufactured using piezoelectric materials that are driven at resonance. With appropriate design and circuitry, it is possible to step up and step down the voltages between the input and output sections of the piezoelectric transf...
متن کاملRevolutionary Innovations in Piezoelectric Actuators and Transformers at FACE
In the middle 90s, the Face Companies created Face International Corporation to focus R&D efforts on high tech applications in the field of piezoelectric technologies. Since then, the company has developed a portfolio of over 50 US patents and several international Patents. The company is currently commercializing three breakthrough technologies including high deformation Thunder piezoelectric ...
متن کاملA study on the disk-shaped piezoelectric transformer with multiple outputs.
In this study, a modified disk-shaped multiple-output piezoelectric transformer operated at the fundamental radial vibration mode has been presented. A derived equivalent circuit for the multioutput piezoelectric transformer was used to analyze the performance. Two piezoelectric transformers, a symmetrically electroded piezoelectric transformer with dual outputs and an asymmetrically electroded...
متن کامل