Two-dimensional Finite Element Analysis Of The Impact Factors Of The Permanent Magnet Eddy Current Caused By Thermal Power

The direct inputs of wind-driven heat exchanger which based on permanent magnetic eddy current was the mechanical energy that was transformed by wind energy. Under the action of alternating magnetic field,the mechanical energy was transferred to the metal stator in the form of electromagnetic energy.It will produce joule heat by eddy current and output the heat-quantity. The heat power of the heat exchanger was influenced by the field distribution and the Change frequency of magnetic field.In this article, finite element analysis of static electromagnetic field on the permanent magnet eddy current heat exchanger was processed by Maxwell 2D. Contrasted the influence of static magnetic field which was caused by structural parameters' changes of the heat exchanger.With the result of analysis,we obtained a optimization to improve the magnetic flux density of clearance, which was minishing the stator air gap width, increasing the number of pole, increasing the number of stator groove, deepening its depth,and using soft magnetic conductor material which had big magnetic conductivity,small resistivity,high thermal conductivity to manufacture stator.The kinematics simulation of permanent magnet eddy current heat exchanger was processed by transient field solver of Maxwell 2D. Contrasted the influence of heating power which was caused by the structural parameters'changes of the heat exchanger and deduced a formula for calculation heating power. With the result of analysis,we obtained a optimization to improve the heating power of the heat exchanger,which was increasing the rotor speed, minishing the stator air gap width, increasing the number of pole, increasing the number of stator groove to 19 and deepening its depth to 3mm.