Dielectric loss and thermal effect in high power piezoelectric systems

Tianyue Yang, Yuanfei Zhu, Shiyang Li, Dawei An, Ming Yang, Wenwu Cao

Research output: Contribution to journalArticle

Abstract

Temperature rise is the main limiting factor that affects the performance of high power piezoelectric systems. Significant decrease of electromechanical conversion efficiency near the series resonance frequency results in more serious heating, which cannot be explained by the classical model. To understand the loss and heating mechanisms of transducers under actual operation conditions, we have systematically studied the dielectric loss. A series resistance is proposed in the equivalent circuit model to characterize the influence of dielectric loss. The active power and temperature rise of the transducer are measured under different conditions. Experimental results verify that our model can accurately quantify both mechanical and dielectric losses, and clarify that the dielectric loss is mainly responsible for the decrease of the efficiency and the thermal effect of the piezoelectric stack. Different from previous researches, we indicate that the dielectric loss is mainly related to the input current but not the applied voltage. This investigation could guide the design and control of high power piezoelectric systems.

Original languageEnglish (US)
Article number111724
JournalSensors and Actuators, A: Physical
DOIs
StateAccepted/In press - Jan 1 2019

Fingerprint

Dielectric losses
dielectric loss
Thermal effects
temperature effects
Transducers
transducers
Heating
heating
equivalent circuits
Equivalent circuits
Conversion efficiency
Temperature
temperature
Electric potential
electric potential

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

Cite this

Yang, Tianyue ; Zhu, Yuanfei ; Li, Shiyang ; An, Dawei ; Yang, Ming ; Cao, Wenwu. / Dielectric loss and thermal effect in high power piezoelectric systems. In: Sensors and Actuators, A: Physical. 2019.
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Dielectric loss and thermal effect in high power piezoelectric systems. / Yang, Tianyue; Zhu, Yuanfei; Li, Shiyang; An, Dawei; Yang, Ming; Cao, Wenwu.

In: Sensors and Actuators, A: Physical, 01.01.2019.

Research output: Contribution to journalArticle

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AU - Yang, Tianyue

AU - Zhu, Yuanfei

AU - Li, Shiyang

AU - An, Dawei

AU - Yang, Ming

AU - Cao, Wenwu

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