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Demagnetization setting in Direct on-line start machine

- September 4, 2024 at 8:01 pm
  aa668
  Subscriber
  I am using Ansys Maxwell for 2D Simulation of a Direct On-line start PM machine. This machine is expected to go through demagnetization/magnetization when it is started.
  
  In order to setup the magnet (Ferrite Magnet in this case), I am following Ansys Training Manual WS6.5 : Multiple-stage Magnetization/Demagnetization . I am performing 2 steps -
  1. Inputting the Descending curve of B-H loop in magnet material definition.
  2. Turning on demagnetized point calculation in excitation setting.
  I want to confirm whether the same steps for variable flux machine can be applied for accurate simulation of direct on-line start machines.
- September 16, 2024 at 2:24 pm
  
  Timos
  Ansys Employee
  
  Yes, the steps you're following are correct for accurately simulating demagnetization. Defining the BH Curve in the magnet material, enabling "compute demagnetized operating points" calculation and applying a desired current is all you need. This procedure should work as for a direct on-line start machine as it does for a variable flux machine.

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