Dissertation > Excellent graduate degree dissertation topics show

Studies on Multi Physics Field of MW Level Permanent Magnet Synchronous Wind Power Generator

Author: ZhangMeiWei
Tutor: LiWeiLi
School: Harbin University of Science and Technology
Course: Motor and electrical
Keywords: permanent magnet wind generator eddy current loss of permanentmagnet three-dimensional transient temperature field electromagnetic field improved rotor structure
CLC: TM315
Type: Master's thesis
Year: 2012
Downloads: 41
Quote: 0
Read: Download Dissertation

Abstract


With the continuous development of wind power industry, the capacity of awind generator is increasing, and the permanent magnet wind generator hasgradually become the main development trend of wind power market. Therequirements for safety and reliability of wind generator are higher especially inthe offshore wind power system, and now the permanent magnet wind generatorshows the advantages. Because of the large size and heavy quality of permanentmagnet wind generator, the installation of generator is very difficult. So thepermanent magnet wind generator is expected owning low failure rate to reducethe maintenance cost. In this situation, the design and temperature fieldcalculation of permanent magnet wind generator are very important. And theaccurate calculation of losses in the generator is the premise condition ofanalyzing the wind generator temperature distribution. Due to the temperaturedistribution of generator is implicated by the calculation method of losses, thepermanent magnet eddy current loss could not be ignored for the large capacitypermanent magnet wind generator.First of all, the permanent magnet eddy current loss is calculated andanalyzed when the1.5MW permanent magnet wind generator running underrated load. In consideration of the effect of coating on the permanent magneteddy current loss, the permanent magnet eddy current losses are calculated whenthe surface of permanent magnet plating zinc and nickel phosphorus alloy. Inorder to comparative analysis the influence degree of surface coating onpermanent magnet eddy current loss, the permanent magnet eddy current losswith no surface coating is calculated, and the calculation results are compared and analyzed.The three-dimensional transient temperature field of the1.5MW permanentmagnet wind generator is calculated by the finite element method. Then thetemperature distribution of the permanent magnet wind generator running in therated wind speed is analyzed. And the temperature values of the generatordifferent sections are picked up for drawing temperature-time curve diagram,which may be helpful for the design of cooling system of large-capacitypermanent magnet wind generator.At last, based on improving the permanent magnet on the rotor surfacestructure of1.5MW permanent magnet wind generator, another rotor structure ofpermanent magnet wind generator is designed. And the electromagnetic field ofimproved rotor structure of permanent magnet wind generator is analyzed. At thesame time, the eddy current loss in one permanent magnet is calculated when thepermanent magnet wind generator running in the rated load through the two-dimensional transient electromagnetic field of generator. Based on the aboveconditions, the two-dimensional steady temperature field distribution ofimproved rotor structure of permanent magnet wind generator running in therated wind speed is calculated, and the temperature trend of generator is analyzed,which may provide some basis for the design of large-capacity permanent magnetwind generator.

Related Dissertations

  1. Research on Analytical Method to Calculate the over Voltage and Surge Impedance of Tower under Lightning,TM863
  2. Study on DC Casting of Aluminum Alloy under the Dual-frequency Electromagnetic Fields,TG292
  3. Studying on Dual-Ingot Low Frequency Electromagnetic Semi-Continuous Casting,TG292
  4. Effects of Environmental Magnetic Field on Chick Embryonic Development and Chick Cognition,S831
  5. The Analysis of MW Level Direct-drive Permanent Magnet Wind Generator’s Harmonic and Its Effect on the Generator,TM315
  6. Analysis of Rotor Temperature Field of Hydro Generator on Asymmetric Operation Condition,TM312
  7. Design and Experiment of an Atmosphere Microwave Plasma Jet Device,TP602
  8. Design and Implementation on Automatic Calibration System of Automotive PEPS Electromagnetic-field,O441.4
  9. Maglev mask stage design and performance of the structure,TM574
  10. Health Risk Assessment and Exposure Standard Setup of Environmental Electromagnetic Fields,R14
  11. A Research of the Underground Electromagnetic Field in Three-dimensional Inclined Geological Body,P631.325
  12. Technology for Semi-Solid of ZL101 Aluminum Alloy During Inclined Plate Cooling Under Alternating Electromagnetic Field,TG146.21
  13. Research on the Non-sinusoidal Electromagnetic Field of Permanent Magnet Linear Synchronous Motor,TM341
  14. Research and Design of Three-phase Magnetism Valve Type Controllable Reactor’s,TM47
  15. An Experimental Study on Percutaneous Autologous Cultured Bone Marrow Mesenchymal Stem Cell Grafting Exposed in Electromagnetic Field for Tibia and Fibula Fracture in Rat,R683
  16. The Researches of High-Precision Inductance Sensor,TP212.1
  17. Research of Electronic Circuits and Electromagnetic Field of Electronic Device Based on TLM Model,O441.4
  18. The Couple-field Numerical Simulation of Electro-slag Furnace Induction Hardening Based on ANSYS,TF061.2
  19. Effect of PEMF on Proliferation, Differentiation and Gene Expresstion of Osterix in Osteoblasts,Q78
  20. The coupled metamaterial particles electromagnetic properties analysis,O441.6
  21. Periodic structure materials diffraction study electromagnetic field simulation algorithm,TB302

CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,) > Wind turbines
© 2012 www.DissertationTopic.Net  Mobile