Simulation of Energy Conversion Processes in Linear Electromagnetic Motors with Through Axial Channel

Modeling of workflows of electromechanical systems with linear electromagnetic motors (LEMM) is an integral tool for their improvement in relation to discrete operations, processes and technologies of the agricultural industry or the processing of agricultural products. At the same time, the use of typical application packages for the construction and analysis of low-cost virtual models seems to be especially convenient and relevant. (The purpose of the study) To evaluate the influence of the characteristics of a hollow (non-magnetic) axial channel in the LEMM magnetic system on the allowable changes in the output indicators of the electromechanical system by virtual simulation. (Materials and Methods) Using the specialized software COMSOL Multiphysics 4.3b (CM) Matlab, Simulink, a model of an armored cylindrical two-gap LEMM with a variable geometry of a hollow (air) axial channel, which determines the characteristics of the motor magnetic system and its output energy indicators, is obtained and analyzed. (Results and discussion) Based on the results of the analysis of the inductance matrices formed by the CM simulation, the field distribution in the LEMM magnetic system is presented and the most stressed, in terms of induction values, sections of the magnetic circuit that contribute to the deterioration of the motor properties are identified. Integral indicators are given that determine the quantitative estimates of the permissible decrease in the output characteristics of a LEMM with an axial channel in a magnetic system. (Conclusions) By comparative analysis of the output static characteristics of the motor, the range of ratios of the annular section of the ferromagnetic - non-magnetic (axial channel) parts of the LEMM cylindrical armature is substantiated, for which an acceptable decrease in the output mechanical parameters of the system is provided.