ENGINEERING DESIGN METHOD FOR DETERMINING THE INDUCTANCE OF HIGH-PASS FILTERS BASED ON STRUCTURAL PARAMETERS

Abstract

The paper presents an engineering approach to the structural design of high-pass filter inductors based on analytical relationships between inductance and constructive parameters. The proposed methodology is intended to improve the efficiency of designing electromagnetic components used in inverter-based power converter systems.
A mathematical model has been developed that establishes analytical relationships between the inductance of a high-pass filter and its main structural parameters, including the geometric dimensions of the magnetic core, magnetic properties of materials, air gap characteristics, and winding configuration. The proposed model is based on classical electromagnetic theory and incorporates the effects of magnetic flux distribution, fringing in non-magnetic gaps, and nonlinear magnetization behavior.
On the basis of the developed model, a calculation methodology for determining the inductances of harmonic filters is proposed. This methodology allows simplifying engineering calculations, reducing the design time, and improving the accuracy of parameter determination. It also provides the possibility to optimize the electromagnetic characteristics of filters according to the specific operating conditions of inverter-based systems.
To verify the adequacy of the proposed model, computer simulations were carried out to analyze the dependence of inductance on key structural parameters, such as the number of turns, cross-sectional area of the magnetic core, and the size of the air gap. The obtained results demonstrate consistency with fundamental laws of electrical engineering and confirm the applicability of the developed approach for practical design tasks.
The proposed model and calculation technique can be effectively used in the development of high-performance harmonic filters for power systems with semiconductor converters, contributing to improved power quality and enhanced energy efficiency.