Control of the Magnetizing Characteristics of a Toroidal Core Using Virtual Gap

Abstract

A study of the technology of the virtual gap in a toroidal core is analyzed and showed in this paper. We made a study about of the effects of a virtual gap in a toroidal core. Through nonlinear finite element simulations we studied the effects that a virtual gap has on a toroidal core. We realized several analysis magnetic static (using only DC currents). The finite element simulations show the function of a virtual gap in a toroidal core and how this technology can help to control the magnetizing characteristics of a toroidal core. Furthermore, we proposed a method to estimate the equivalent air gap using the results obtained with a virtual gap in the same toroidal core. Moreover, we show how a virtual gap can control the characteristics of the magnetizing curve of a toroidal core varying the DC current intensity in the windings of the holes and how we can vary the saturation degree and the size of the virtual gap of the same manner.