ANSYS MotorCAD: Assign Different Magnetization Patterns for Permanent Magnet Motors

In this video, I'm going to show you how to define the magnetization direction for a permanent magnet motor. So once you launch ANSYS MotorCAD, you can go to the Calculation tab. The settings for magnetization are located at the left bottom corner. By default, it is in parallel direction.

The parallel magnetization means that the magnetization direction is along the axis, and you can see that the two options are in parallel. The second option is radial magnetization.

For the radial magnetization, it means that at any position along the magnet, it is either radial in or radial out, and they have the same magnitude. The third option here under magnetization is called Halbach. So once you click here, it will show that.

By default, it's a continuous ring magnet and has three magnet segments per pole. So if you go to the Geometry tab, and then you'll see that for each pole it has three segments. By default, the center one is the biggest. It occupies 120 degrees out of 180. And you can always change this angle.

And if you want to see the magnetization directions, go to the E-Magnetics tab. Under the FEA Editor tab, you will see that the magnetization directions for each segment; the center one is the largest and it's radially out. And the second Halbach type is called Sinusoidal Array.

So here you will have the option to change the number of magnet segments. It can be 2 or any number which is larger than 2. So here, as an example, I use 8, which means that there are 8 segments per pole in this case.

If we want to see the magnetization direction for each piece, go to the E-Magnetics tab. Under the FEA Editor, you will see the magnetization direction for each magnet segment.

The third Halbach type is called a radial pattern, which means that the direction is still radial in or radial out, but the magnitude is different. You will see that at the center, the magnitude is max, while in between two segments, the magnitude is zero.

If you want to see the definition of the radial pattern, go to the E-Magnetics tab. Under the FEA Editor, E-Magnetics tab, you will see how the magnitude and angle are defined. They are based on the theta, which is the position angle, and also the number of poles.

The last type of Halbach is called custom. Once you click it, go to E-Magnetics' FEA editor. Under E-Magnetics, users can define the magnitude and also the angle. You can put the numbers or an expression here. It can be based on position theta.

And once you solve the model, you go to E-Magnetics again, and then under the FEA tab, you will see the flux density plot. If you want to see the animation, simply click play all. Please contact us at https://ozeninc.com/contact for more information.