Analytical Method for Designing Three-Phase Air-Gapped Compensation Choke

The compensating choke plays an important role in many high-power industrial applications with reactive power compensation. Due to the high number of devices installed every year and EU’s efforts reduce energy demands our society, it is advisable maximize efficiency these devices. non-linearity magnetic core, requirement a linear operating characteristic, presence distributed air gap, this difficult task, various technical challenges. This paper presents analytical method for electromagnetic design three-phase air-gapped core flat load characteristic. considers fringing fields current-density dimensioning based on advanced thermal model. proposed use existing procedures; however, optimization was conducted achieve trade-off between I2R losses manipulate weight identify possibilities. presented verified by finite element (FEM) using engineering-simulation software, ANSYS.