Simulation of electric and magnetic fields using FEMM - FH Aachen ...

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1. Electrostatics What is Electrostatics? Electrostatics is the study of time-independent distributions of charges and fields. It is a branch of science that deals with the phenomena arising from stationary or slow-moving electric charges.Electrostatic phenomena arise from the forces that electric charges exert on each other. 2 Electrostatics contains some problems like properties analyzing in capacitors and in some containers. No current is involved in Electrostatics. 1.1 Cable 1 Assume we have a perfect concentric copper cable. At inner cable a voltage of 130kV (compare to the ground) is applied. (relative permittivity of copper εr≈ 1) Layer 1 Layer 2 εr 3 2 Table 1-1 Values of the relative permittivityεr We will analyze the curve E=f(r) of this cable and draw a plot of E=f(r). 1.1.1 Create a new file. “File”→“New”→ “Electrostatics Problem” Figure 1-1 Create a new problem dialogue box 1.1.2 Set problem definition. Press Menu: “Problem”. Figure 1-2 Problem definition dialogue box 2 《Electrostatics: Theory and Applications》 by Camille L. Bertrand
Problem Type: Axisymmetric Length Unit: Centimeters Frequency, Hz: 60 Depth: 1 Solver Precision: 1e-008 Min Angle: 30 1.1.3 Create a model Draw three quarters of circle using function “Operate on arc Segments”. First we should mark some nodes using ”Operate on nodes”, then we switch to function . Select 2 nodes one by another to draw an arc segments in between. Figure 1-3 New model Properties of the circles are shown in the picture. We can check this information by right clicking on the arc segment under the function . And we can also do the same thing under function to check the information of a drawn linear segment. Figure 1-4 Linear property
Page 1 and 2: Simulation of electric and magnetic
Page 3 and 4: Acknowledgments I would like to exp
Page 5 and 6: 1.4.1 Create a new file. ..........
Page 7 and 8: 3.2.1 Create new file .............
Page 9: Current flow procedures: 1. Create
Page 13 and 14: Figure 1-7 Voltage on layer 1 Groun
Page 15 and 16: 1.1.7 Generate mesh and run FEA Run
Page 17 and 18: Figure 1-18E,t plot And this plot c
Page 19 and 20: 1.2.2 Set problem definition. Press
Page 21 and 22: But here we have a non-symmetric ca
Page 23 and 24: 1.2.6 Define conductor and material
Page 25 and 26: Figure 1-38 Contour Then select E,
Page 27 and 28: 1.3.3 Create a new model We treat t
Page 29 and 30: 1.3.5 Set up the properties of mate
Page 31 and 32: Figure 1-53 Result 1.3.9 Plot field
Page 33 and 34: Inner cable 2*ri=10 mm Flange(Flans
Page 35 and 36: Figure 1-62 Conductor properties Fi
Page 37 and 38: Figure 1-67Contour Use function to
Page 39 and 40: 1.5.2 Set problem definition. Press
Page 41 and 42: 1.5.6 Define conductor properties T
Page 43 and 44: Figure 1-83D,t plot 1.5.11 Comparis
Page 45 and 46: And this time it seems to be smooth
Page 47 and 48: The outer shell is connected with g
Page 49 and 50: 1.6.8 Plot field values Draw E and
Page 51 and 52: 1.7.3 Create a new model Draw 3 seg
Page 53 and 54: 1.7.8 Display results Figure 1-111R
Page 55 and 56: 2. Electrical Field Before we deal
Page 57 and 58: 2.1.5 Define conductor properties S
Page 59 and 60: Draw the contour from (0, 0) to (14
Page 61 and 62:
Figure 2-13 New model step 2 2.2.4
Page 63 and 64:
σr=1 for schicht2 Figure 2-19Prope
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2.2.9 Plot field values Choose cont
Page 67 and 68:
Figure 3-2 Problem definition 3.1.3
Page 69 and 70:
3.1.7 Define circuits. Select menu
Page 71 and 72:
3.1.10 Associate Properties with bo
Page 73 and 74:
Click on button . Then in the dialo
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3.2 Air gap Here we have a square c
Page 77 and 78:
Figure 3-24 Circuit 3.2.8 Place Blo
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Figure 3-29 Mesh 3.2.12 Analysis re
Page 81 and 82:
3.2.13 Plot Field Values Draw conto
Page 83 and 84:
List of figures Figure 1-1 Create a
Page 85 and 86:
Figure 1-89 New model .............
Page 87:
List of tables Table 1-1 Values of
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