COMSOL Multiphysics - Electromagnetics Project 01

Single Solenoid in COMSOL
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Project Description
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Create a model in COMSOL (App Builder) for a realistic solenoid (COMSOL has several 3D coil modeling
functions that can be used) and stator. The model should be independent and the building block for a more
complicated model. Create a GUI for the Inputs and Outputs.

Part 1
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INPUTS

- Inner radius
- Number of vertical turns (n)
- Number of horizontal turns (m)
- Type of cable geometry: circular or rectangular
- Cable material: 1. Cu (copper), 2. Al-Al4C3 (Aluminum Carbide)
- Insulation? (if possible use the regular high temperature insulation for Cu, and Aluminum-oxide for the Aluminum Carbide wire)
- Voltage or Current
- Frequency (Hz)
- Phase (radian or degrees)
- Initial Temperature (K)
- On axis location (usually it's z=0 but it should be possible to select other position)

(work should be done using parameters)

STATOR

- An option should be available for adding an stator in the future (see part 2)

COORDINATE SYSTEMS
- Cylindrical (z,r,theta)
- Cartesian (x,y,z)

(solenoid axis on z-axis)


OUTPUTS

Electric: 3D electric field distribution (graphic on the GUI and table on file) -function of time-
Magnetic: 3D magnetic file distribution (graphic on the GUI and table on file) -function of time-
Power: V=V(t), I=I(t), Z, P=P(t) divided in R and X, 3D poynting vector (graphic on the GUI and table on file)
Thermal: 3D thermal distribution of temperatures. Indicate maximum and minimum temperature.
Structural: Dimensional changes and stresses (graphic and external file -no specific requirements)

(An animation will most likely be needed. As it is a time dependent periodic system, a few cycles would be enough)


Part 2
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Use the model / app from part 1, add a stator. A total of 8 stator parts placed at 45 degrees separation will
be placed around the solenoid. The solenoid is a group of lamination (it could be modeled as having different
properties on z and theta -I can tell you what values to use if needed but usually is a factor of 15:1 for the
thermal values-).

- stator material Silicon Steel Plates
- Lamination width: 1mm
- In-between lamination material: Ceramic Coating (Al2O3)


The stator will change the orientation of the magnetic field make them go radially towards the center on the
solenoid but there will be edge effects. The dimensions of the stator should be written using parameters too.

Geometric dimensions
- TBD
- The stator slot depth, D(slot depth) = 5*D(stator slot width)
- In principle, the radial length of the stator is 1.25-1.3 the radius of the coil.
- In principle the stator width is equal to the coil outer radius + 1 coil width

OPTIMIZATION

- Give an option to run a Stator Optimization
- Give an option to enter by hand the stator geometric values
- Give an option to use the "Default values"
- Run an optimization job to calculate the geometric dimensions of stator that produces the highest magnetic field radial component (Br)
- The geometrical dimensions in the optimization should be bounded to values not too much different than the
original geometrical dimensions given in the last paragraph. If the stator is too big then the system will be too
heavy.