The air-core inductance of power transformers is measured using a nonideal low-power rectifier. Its dc output serves to drive the transformer into deep saturation, and its ripple provides low-amplitude variable excitation. The principal advantage of the proposed method is its simplicity. For validation, the experimental results are compared with 3-D finite-element simulations.
- Air-core inductance
- core deep saturation
- inrush currents
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering