Choice of polarization
1. Polarization coordinate system
Two coordinate systems are available:
A “ Global ” polarization coordinate system: The origin is positioned at the rotor center.
A “ Local ” polarization coordinate system which is specific to each considered magnet topology.
Note: The reference axis (X-axis for Cartesian coordinate system) has a red color.
2. Polarization orientation
Five strategies of polarization are proposed:
-
Direction
-
Radial +, Radial –
-
Orthoradial +, Orthoradial –
3. Polarization orientation illustrations
 |
1 | Global coordinate system. The origin is positioned at the rotor center.
The reference axis is the X-axis. Its color is red. |
| 2 | Local coordinate system. Its location is defined for each magnet
topology. See “Part Factory” application for more information. The reference axis is the X-axis. Its color is red. |
|
| 3 | Borders of part sector in which magnet topology is defined. | |
| 4 | Magnet in which a point P is considered to illustrate the polarization orientation. | |
| 5 | Polarization of the magnet considered at any point P. | |
| Legend of pictures to illustrate the magnet polarization orientation | ||
 |
 |
| Polarization / Radial + / Global coordinate system | Polarization / Radial – / Global coordinate system |
 |
 |
| Polarization / Orthoradial + / Global coordinate system | Polarization / Orthoradial – / Global coordinate system |
 |
 |
| Polarization / Radial + / Local coordinate system | Polarization / Direction + Angle / Local coordinate system |