An electrooptic probe to determine internal electric fields in a piezoelectric transformer

Area of Science:

• Materials Science
• Electrical Engineering
• Optics

Background:

• Piezoelectric transformers are crucial for power conversion.
• Accurate measurement of output voltage is essential for performance optimization.
• Lithium niobate (LiNbO3) is a key material in electrooptic applications.

Purpose of the Study:

• To develop and explore a novel electrooptic technique for measuring LiNbO3 piezoelectric transformer output voltage.
• To demonstrate the linearity and reliability of the proposed measurement method.
• To analyze the sensitivity of the electrooptic response to alignment variations.

Main Methods:

• Utilized the electrooptic effect for voltage determination.
• Performed experimental validation under AC resonant conditions.
• Developed and described a calibration technique for the diagnostic.
• Conducted a sensitivity analysis regarding angular alignment.

Main Results:

• Demonstrated a linear relationship between the electrooptic response and output voltage.
• Experimental data confirmed the effectiveness of the technique under resonant operation.
• The calibration method was successfully implemented.
• Sensitivity to angular alignment was quantified.

Conclusions:

• The developed electrooptic technique provides a viable method for measuring LiNbO3 piezoelectric transformer output voltage.
• The technique offers a linear and reliable response, suitable for diagnostic applications.
• Understanding alignment sensitivity is crucial for accurate implementation.