Hello,
I am trying to calculate the flux density at the top surface of a magnet, which is placed in the rotor of an electric machine. Therefore, I have defined a support path at the outer top edge of the magnet. For now, I am only interested in the component of the flux density normal to the support path. I have created a local coordinate system with the y-axis aligned with the normal vector of the support path, such that I can transform the component of B in the global coordinate system to the local one and select on the the second component. This method works when the rotor does not move.
However, I would also like to investigate the influence of rotor movement. When the rotor moves, the local coordinate system does not move along with the rotor and therefore, the calculation described above does not work anymore. Is there a way to have the local coordinate system rotate along with the rotor? Or is there a different way to obtain the desired value.
Thanks in advance and best regards,
Ruud