Analytical Method for Selecting a Rectification Technique for a Piezoelectric Generator based on Admittance Measurement

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Mateu, Loreto^1 ; Zessin, Henrik^1 ; Spies, Peter^1

Fraunhofer Institut for Integrated Circuits IIS, Nordostpark 93, 90411 Nuremberg, Germany^1

关键词: Ac-dc converters;    Admittance measurements;    Analytical method;    Available power;    Diode bridge;    Piezoelectric elements;    Piezoelectric generators;    Synchronized switch harvesting;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012111/pdf
DOI  :  10.1088/1742-6596/476/1/012111

来源: IOP

【 摘 要 】

AC-DC converters employed for harvesting power from piezoelectric transducers can be divided into linear (i.e. diode bridge) and non-linear (i.e. synchronized switch harvesting on inductor, SSHI). This paper presents an analytical technique based on the measurement of the impedance circle of the piezoelectric element to determine whether either diode bridge or SSHI converter harvests more of the available power at the piezoelectric element.