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동의어 포함
Title Page
ABSTRACT
Contents
I. Introduction 11
1. Introduction of the research 11
2. Composition of a thesis and configuration 15
II. Design of the traction motor 16
1. Design process 16
2. Determination of the design target 17
3. Selection of the motor type 18
4. Determination of the motor size 21
5. Pole-slot number selection 23
6. Determination of the winding method 24
7. Rotor topology optimization 26
III. Analysis of traction motor 29
1. No-load analysis 29
2. Load analysis 35
3. Mechanical analysis 42
IV. Verify the designed motor by experiment 44
V. Determining the specifications of the designed motor 52
VI. Conclusion 54
References 56
국문 초록 66
Figure 1. Proposed design process for the traction motor 16
Figure 2. The structure of designed traction motor for heavy-duty vehicles: (a) construction of the motor and (b) FEM mesh grid for... 20
Figure 3. Analysis results for the back EMF of the (a) non-skewed and (b) skewed models 31
Figure 4. High-order harmonics distribution of the back EMF of the (a) non-skewed and (b) skewed models 32
Figure 5. Analysis results for the cogging torque of the (a) non-skewed and (b) skewed models 33
Figure 6. High-order harmonics distribution of cogging torque of the (a) non-skewed and (b) skewed models 34
Figure 7. FEM analysis of the torque according to the current phase under (a) the rated current (200A) and (b) the maximum current (420A) 37
Figure 8. Comparison of torque between skewed and non-skewed models through FEM under (a) the rated current (200A) and (b) the... 38
Figure 9. FEM analysis of the magnetic flux density distribution at the maximum current 39
Figure 10. FEM analysis results for (a) the torque-speed and the power-speed characteristics and (b) the efficiency map 41
Figure 11. (a) von Mises stress distribution in the rotor at 7200rpm. (b) Variation in von Mises stress according to the rotational speed 43
Figure 12. (a) Prototype of the designed traction motor and (b) Traction motor test platform 45
Figure 13. Back EMF waveforms derived from (a) FEM analysis and (b) experimental data 47
Figure 14. FEM analysis and experimental results for (a) torque and (b) power according to the rotational speed 49
Figure 15. FEM analysis and experimental results at a base speed of 2000 rpm for (a) torque and (b) power according to the rotational speed 50
Figure 16. Efficiency map derived from the experimental result 51
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