Permanent magnet gear wheels - QuickField simulation example
Magnetic gearboxes are used as an alternative to mechanical gearboxes. The transmitting torque of the magnetic gear is limited by the maximum power of the magnets.
How to find torque transmission in permanent magnet gear?
Answer Typical applications Geometry
Axial length Lz = 50 mm.
Given
Task
Solution
Results
Engineering question
Set up a plane-parallel QuickField DC Magnetics problem for a permanent magnet gear and evaluate torque transmission from computed field results.
magnetic gear couplings, contactless torque transmitters, permanent magnet gear systems
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Simulation problem
Problem Type
Plane-parallel problem of DC magnetics.
Coercive force of permanent magnets Hc = 800 kA/m.
Relative magnetic permeability of steel μ = 1000.
Determine the static torque as a function of magnetic wheels position.
A series of magnetostatic problems for different positions of outer wheel is calculated. Measurement step is 2 degrees. LabelMover tool is used to automate calculations.
Dependence of the mechanical torque on the outer wheel position.
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