Reluctance Network Analysis for Complex Coupled Inductors

Abstract

The use of reluctance networks has been a conventional practice to analyze transformer structures. Basic transformer structures can be well analyzed by using the magnetic-electric analogues discovered by Heaviside in the 19 th century. However, as power transformer structures are getting more complex today, it has been recognized that changing transformer structures cannot be accurately analyzed using the current reluctance network methods. This paper presents a novel method in which the magnetic reluctance network or arbitrary complexity and the surrounding electrical networks can be analyzed as a single network. The method presented provides a straightforward mapping table for systematically linking the electric lumped elements to magnetic circuit elements. The methodology is validated by analyzing several practical transformer structures. The proposed method allows the analysis of coupled inductor of any complexity, linear or non-linear.

Development of an automated theranostic platform combining magnetomotive ultrasound and magnetic hyperthermia

“…18(a)], a noticeable shift in the resonant frequency is observed, decreasing to a minimum value of around 25 kHz. In this case, the reluctance of the transformer was eliminated entirely, and only the total inductance of the primary winding remained [103,104]. The concept of transformer reluctance relates to the resistance encountered by magnetic flux lines as they pass through a specific path or medium.…”