How can I simulate a two-coil problem in ANSYS Maxwell 13?

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SUMMARY

This discussion focuses on simulating a two-coil problem using ANSYS Maxwell 13 and comparing the results with FEMM. The user is attempting to model two coaxial copper coils with specific parameters: Coil 1 has 16 turns and a radius of 56.5 mm, while Coil 2 has 12 turns and a radius of 73.98 mm, operating at a frequency of 15 kHz. The user encounters challenges in defining frequency and obtaining inductance directly in Maxwell 13, as well as difficulties in retrieving induced voltage outputs. The FEMM results indicate inductances of L1 = 78 µH and L2 = 66 µH.

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  • Understanding of electromagnetic simulation principles
  • Familiarity with ANSYS Maxwell 13 software
  • Knowledge of coaxial coil configurations and inductance calculations
  • Basic understanding of transient analysis in electromagnetic simulations
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  • Research how to define frequency settings in ANSYS Maxwell 13 for transient simulations
  • Learn about the output parameters available in Maxwell 13, specifically for inductance and induced voltage
  • Explore the process of entering coil turns and geometry in ANSYS Maxwell 13
  • Investigate the differences between FEMM and ANSYS Maxwell for inductance calculations
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Electrical engineers, simulation specialists, and students working with electromagnetic field simulations, particularly those interested in coil design and inductance analysis using ANSYS Maxwell 13.

Uriah_Heep
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Hi everybody,

I would like to compare inductance (self and mutual) calculations using FEMM and Maxwell 13, both 2D problems. In FEMM this is very simple and I just use an axissimetric solution, enter the desired frequency, currents and get the results.

When using Maxwell, however, this seems to be much more complicated. Please I appreciate your help on simulating this problem:

Two coaxial copper coils, frequency 15 kHz. Coil 1 has 16 turns, radius 56.5 mm and I represent the winding as a 1 mm radius circle in Maxwell, current i1 = 28 A. Coil 2 has 12 turns, radius 73.98 mm and I represent the winding as a 1 mm radius circle in Maxwell, current i2 = 0 A (open circuit). Distance between coils is 42.9 mm.
Currents are sinusoidal.

FEMM results are: L1 = 78 uH and L2 = 66 uH.

I tried to use Maxwell in transient mode (but could not find where to define frequency). Moreover, transient solution does no provide "Matrix" as output parameter...

Please, how can I simulate this geometry with Maxwell ?
 
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I just realized that multiplying the inductance given in Maxwell 13 by N2 the result is the desired inductance... Is it possible to obtain the result directly ? I mean, isn't it possible to enter number of turns in Maxwell ? This is a simple axisymetric problem.

Also, how can I get induced voltage in Maxwell 13 ?
 

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