Ceramic-Heterostructure-Based Magnetoelectric Voltage Transformer with an Adjustable Transformation Ratio

Area of Science:

• Materials Science
• Electrical Engineering
• Physics

Background:

• Traditional transformers rely on electromagnetic or piezoelectric principles.
• Existing transformers lack tunable voltage transformation ratios.
• Magnetoelectric composites offer a novel approach to energy conversion.

Purpose of the Study:

• To describe a novel voltage transformer utilizing the magnetoelectric effect.
• To investigate the tunability of the voltage transformation ratio using a DC magnetic field.
• To analyze the transformer's characteristics under varying operating conditions.

Main Methods:

• Fabrication of a composite ceramic heterostructure with magnetostrictive and piezoelectric layers.
• Experimental investigation of voltage transformation ratio (K) dependence on DC magnetic field (H).
• Analysis of transformer performance metrics including frequency response, input voltage amplitude, and load resistance.

Main Results:

• Demonstrated a voltage transformer with a tunable voltage transformation ratio (K) from 0 to 14.1.
• Achieved output power of 63 mW with a power conversion efficiency of 34%.
• Characterized the transformer's response to frequency, input voltage, magnetic field strength, and load resistance.

Conclusions:

• The developed magnetoelectric transformer offers a unique method for voltage control via magnetic fields.
• Proposed calculation methods for predicting transformer performance characteristics.
• Highlighted potential applications and avenues for improving magnetoelectric transformer technology.