Radial Force Calculation in Switched Reluctance Motor

Altair Forum User

Hi,

 

I have done a Magnetostatic simulation on Switched Reluctance Motor (SRM) to obtained torque vs Rotor position characteristics for different values of current. 

 

Next I would like to calculate the Radial force vs Rotor position characteristics for different values of current (shown in link below). I would like to use this data for NVH analysis.

 

http://tinypic.com/r/4k8bjn/9

 

Can somebody please help me with this?

Alejandro Rodríguez

Hello Sandesh,

I am not completely sure if I understand your questions: I think that you want to compute global radial force over the stator for each rotor position and for each current, is this right?

In this case the simplest and more straightforward solution is to use a sensor defined as you in the image attached where you should choose as lines of interest the borders between the teeth and the airgap (as shown). CYLIN_REF makes reference to a centred cylindrical-coordinates systems as it is shown in the second picture (i.e., it will established your reference to calculate the radial part of the force).

 

 

 

 

If, on the contrary, you want to know the local forces over the stator border with the airgap (which is usually the case to do NVH analysis) I advise you to follow Flux supervisor’s example that you will find in 2D, Open example->Multiphysics->Vibroacustic analysis via OptiStruct .

Best regards.