Tubular Permanent Magnet Generator

Application ID: 20381

This tutorial shows how to model the tubular permanent magnet generator in 2D axisymmetry. The generator consists of a modular stationary stator and moving/oscillating slider. The stator is made of three-phase multiturn windings and an iron core. The slider is made of permanent magnets and iron spacers. The open circuit voltage in the three-phase stator windings due to the periodic motion of the slider is calculated.

The model is set up using the Magnetic Fields and Moving Mesh physics interfaces. The linear periodicity of the tubular generator is set up manually using the General Extrusion feature.

The PM generator model is featured and explained in much greater detail in the following blog post: "Modeling Linear Motors or Generators in COMSOL Multiphysics"

This model example illustrates applications of this type that would nominally be built using the following products: