High-frequency displacement current transformer with just one winding

Abstract

Purpose

This paper aims to describe a new concept of transformer based on the displacement current. The paper shows how this idea can be translated into reality and presents an example of a working design.

Design/methodology/approach

The authors replace the primary winding of the transformer with a capacitor. The displacement current between the capacitor plates induces a magnetic flux in the core. This flux in turn induces electromotive force in the classical secondary winding.

Findings

The basic mathematical aspects illustrated by results obtained from a simulation developed using a commercial software ANSYS-HFSS are given. The saturation of the magnetic core due to the applied high-frequency range is investigated and simulated using a finite difference time domain code implemented in MATLAB. A prototype transformer was built and tested; the obtained results confirm the previous ones from simulations.

Originality/value

A new concept of the single winding transformer was used as a pulse forming circuit.

Citation

Achour, Y. and Starzyński, J. (2019), "High-frequency displacement current transformer with just one winding", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 38 No. 4, pp. 1141-1153. https://doi.org/10.1108/COMPEL-10-2018-0414