Calculation of Coil Inductance in Tubular Linear Reluctance Motor using Three Dimensional FEM

摘要

Przedstawiono analizę indukcyjności cewki stosowanej w rurowym reluktancyjnym silniku liniowym z otwartym obwodem magnetycznym. Zastosowano metodę elementu skończonego do symulacji silnika i obliczania indukcyjności cewki.%This paper reports a study of coil inductance in every plunger positions in tubular linear reluctance motors (TLRMs) with open type magnetic circuits. In this paper, a// inductance (minimum and maximum inductance) calculation methods in winding of tubular linear reluctance motors are described. Furthermore, a new approach in maximum inductance calculation based on energy method is proposed. Electromagnetic fmite-element analysis is used for motor simulation and coil inductance calculation. Moreover, inductance of a prototype TLRM was measured with experimental methods. Simulation results of coil inductance calculation using 3-D FEM with coil current excitation is compared to theoretical and experimental results. The comparison yields a good agreement.