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 calculate the transmitted static torque of permanent-magnet gear wheels as a function of their relative position?
Answer Typical applications Geometry
Axial length Lz = 50 mm.
Given
Task
Solution
Results
Engineering question
Use LabelMover to solve magnetostatic models at successive angular positions and plot mechanical torque versus outer-wheel angle.
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.
Static torque transmitted between permanent-magnet gear wheels versus their relative angular position, showing the periodic magnetic gearing characteristic.
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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