Research On Eddy Current Heating Device Of Permanent Magnet Based On Wind Energy

Permanent magnet eddy current heating was a form of heating using wind energy.Because of its low requirement on wind quality,relatively simple device structure and high heating efficiency,it was an effective application of distributed energy.The use of wind turbines to drive permanent-magnet eddy current heating devices insteaded of traditional fossil energy for winter heating could effectively alleviate the current energy crisis and environmental pollution and other issues.In this paper,firstly,the permanent magnet eddy current heating device testbed designed and built by the Wind Heating and Thermal Research Center of XXX was taken as the research object,and the experimental study of the permanent magnet eddy current heating test device was carried out and the results of the test were calculated.The heating power and thermal efficiency of the device during the test provided a reliable basis for subsequent numerical simulation studies.Ansys Maxwell,a commercial numerical simulation software,was used to simulate and analyze the magnetic field environment and the motion characteristics of the test device.The eddy current loss and the heating efficiency of the device were compared with the test results to verify the correctness of the numerical simulation method.This provides a theoretical basis for the design of a more reasonable permanent magnet eddy current heating device structure.Secondly,study the characteristics of ferromagnetic materials,selected the best heating device material.Ansys Maxwell software was used to analyze the magnetic field distribution,magnetic field intensity distribution,magnetic induction intensity distribution and air-gap magnetic flux density in the heating device with different numbers of permanent magnet pole pairs to select the best number of permanent magnetic pole pairs.According to the principle of electromagnetic field,the input torque of the heating device was deduced and compared with the input torque of the vertical axis wind turbine.A mathematical model of the relationship between the geometric parameters of different components inside the device is established,and the components of the permanent magnet eddy current heating device are determined.Structural parameters,and establish the determined device model.Finally,the electromagnetic simulation of the determined device model is performed.The eddy current density distribution,input torque distribution and eddy current loss distribution of the device under different working conditions ara analyzed.The simulation results are calculated by field calculator to determine the eddy current heating.The heating power and thermal efficiency of the device determine the structure of a permanent-magnet eddy current heating device that can be heated by a vertical axis wind turbine.