Magnetic Field Simulation with COMSOL

Physixfactor provides magnetic field and electromagnetic simulation with COMSOL Multiphysics for power infrastructure and high-tech equipment. How strong is the field around a power line or cable, and where does the 0.4 µT contour lie? This is an important issue in the Netherlands.

  • Cable simulations for determining magnetic fields and Joule heating.
  • What field does a magnet configuration produce?
  • How do you keep stray fields from an actuator away from a sensitive sensor?

 

Magnetic field zone calculation for overhead power lines
High tension pylons in Dutch landscape
Pylons in Dutch Landscape
Magnetic field strength in and outside a submarine cable with steel sheath at 50 Hz

Submarine Cable Magnetic Fields

  • Challenge: limit the field outside a 50 Hz steel-sheathed cable
  • Approach:  COMSOL model incl. sheath currents and Joule heating
  • Result: outside field reduced by up to 90%
Submarine Cable Case ==>
Halbach magnet

Halbach Magnets

 

  • Challenge: keep actuator stray fields away from a sensor
  • Approach: COMSOL model of actuator and shield
  • Result: field reduced by more than 30 dB
Halbach Array Case ==>
Halbach sectors

Magnetic shielding

 

  • Challenge: concentrate the field with minimal magnet material
  • Approach: static and dynamic 2D/3D COMSOL models
  • Result: magnet weight reduced by 15-20% 
High Tech Shielding Case ==>