Dissertation > Excellent graduate degree dissertation topics show

Analysis of Electromagnetic Field and Temperature Field of Low Speed High Torque Permanent Magnet Motor

Author: SunLiZhu
Tutor: ZengLinSuo
School: Shenyang University of Technology
Course: Motor and electrical
Keywords: Permanent Magnet Motor Low Speed High Torque Field-circuit coupled Electromagnetic Field Temperature Field
CLC: TM351
Type: Master's thesis
Year: 2011
Downloads: 169
Quote: 2
Read: Download Dissertation

Abstract


Low speed high torque permanent magnet motor, which can drive loader directly without reducer, has the advantages of low torque fluctuation and good adjustment characteristics. Therefore, it is widely applied in the production of various departments, especially in the areas of oil field pumping units, numerical control machine and automation equipment. However, with high torque motors widely applications in various industrial fields, kinds of faults emerge repeatedly. In those faults, locked-rotor phenomenon always occurs in oil field. Therefore, it is necessary to do deeply research in the electromagnetic field and the temperature field distribution of the motor. Motor-electric power is sent out in the form of heat, which will cause the temperature of the motor components rising rapidly. Eventually, motor can not work. Motor temperature rise is important factor which affects motor life and operation reliability, so the accurate analysis of the temperature field has the vital significance.Taking a 5kW,10-pole surface type low speed high torque permanent magnet motor for example, the electromagnetic field and the temperature field of this prototype under locked-rotor fault are analyzed in this paper. First of all, according to the electromagnetic field theory, using field-circuit coupled finite element method,2-D motor field, circuit and motion coupling is analyzed. Under no-load operation, no-load operation and locked-rotor operation the electromagnetic field distribution can be obtained. So the magnetic flux density of the motor parts can be determined. Eventually, according to iron loss characteristics table, the core iron loss values of stator and rotor can be obtained. The copper loss values of the motor windings are calculated by formula. Based on the electromagnetic field calculation, according to the heat transfer and fluid mechanics theory, the 3-D finite element model of the motor is established. Analysis of the temperature field is conducted. Finally, the temperature distribution under locked-rotor operation can be obtained. The temperature distribution trend is consistent with the actual project results. In this paper, using finite element software,2-D and 3-D finite element model of low speed high torque permanent magnet motor are established. Motor losses, thermal conductivity and convection coefficient calculation methods are given. Under locked-rotor operation temperature changes of motor stator windings and permanent magnet of rotor are analyzed. This has important engineering significance for design and optimization of low speed high torque permanent magnet motor.

Related Dissertations

  1. The Research on Thermal Field Calculation of Tightly-coupled Dry-type Air-core Split Reactor,TM47
  2. Analysis of Temperature, Deformation and Stress Fields of Nuclear Waste Repository in Salt Rock,TL942
  3. The Analysis and Study of Leakage Magnetic Field and Temperature Field in Dry-Type Transformer,TM412
  4. Oil-immersed transformer temperature field numerical calculation and analysis,TM411
  5. Dry-type air-core reactor temperature field loss and,TM478
  6. Power transformer stray loss and thermal issues related to the calculation and analysis,TM411
  7. Shimoji different geographical pipe pipe arrangement within the group of soil temperature,TU831
  8. Study on Temperature Field of Lithium-ion Battery Package in Electric Vehicle and It’s Dissipation Structural Optimization,TM912
  9. Maglev mask stage design and performance of the structure,TM574
  10. Power becomes more power motors to improve the design and performance analysis of starter,TM343
  11. Simulation and Experimental Study on Linear Motor Pump System,TE933.3
  12. Research fully hydraulic wet brake system features large mining trucks,U463.5
  13. Study on Simulation of Forging Process for Medium Pressure Rotor,TG316
  14. Research on Microstructure and Property of Three-dimensional and Unbalanced Joint on Mg Alloy Processed by FSW,TG453.9
  15. Friction stir welding sheet 2524,TG453.9
  16. Ultrasonic AZ31B magnesium alloy casting temperature field on the,TG339
  17. The Research on Small Scale Meteorology Model in Imitating Effect of Urban Landscapeconstruction,S731.2
  18. Three-dimensional Temperature Field Modeling and Visualization for Crystal Furnace,TP391.41
  19. Numerical Analysis of the Heat-Flow Coupling for Rotor of Supercritical Steam Turbine,TK261
  20. Research on Key Technology of Auto Float Caliper Disc Brake,U463.5
  21. Investigation on the Performance Characteristics and Humidity Resistance of Sodium Silicate Sand Hardened by Twice Microwave Heating Process,TG221

CLC: > Industrial Technology > Electrotechnical > Motor > A special motor > Permanent magnet motor
© 2012 www.DissertationTopic.Net  Mobile