Manage magnet parameters
How to manage magnet parameters ?
Here is the list of user parameters related to the magnetic behavior of magnets.
| Label | Definition |
| T REF | Reference temperature. |
| Br at T REF | Remanent induction at T REF. |
| α | Reverse temperature coefficient for Br. |
| μ r | Relative permeability. |
| HcJ | Intrinsic coercivity at T REF. |
| β | Reverse temperature coefficient for HcJ. |
| (B.H) max | Energy product. Disabled input field, value deduced from other inputs. |
| Hcb | Normal coercivity at T REF. Disabled input field, value deduced from other inputs. |
| * | Maximum operating temperature. Just for information, not used in computations. |
| * | Curie temperature. Just for information, not used in computations. |
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| Presentation of the magnet properties in “Materials” application | |
| 1 | Dialog box dedicated to the definition of magnet parameters. Located in the magnetic data tab when creating a new material or when editing the properties of an existing one. |
| 2 | Input parameters are written in this header and are defined for the reference temperature T REF written in the first cell of the table. |
| 3 | Remanent induction at T REF (B r ). |
| 4 | Normal coercivity at T REF (Hcb). |
| 5 | B(H) curve for the magnet. |
| 6 | Intrinsic coercivity at T REF (HcJ). |
| 7 | The curves displayed depend on the operating temperature defined in this
field. The default value corresponds to the reference value. The user can modify this value and visualize the changes on graph. |
| 8 | (B.H) max curve. |
| 9 | Load line location. See illustration on how to use it below. |
| 10 | Load lines. |
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| How to use the load line location ? | |
| 1 | Target a load point. |
| 2 | Draw a horizontal line till the intersection with the load line curve. |
| 3 | Then, draw a vertical line from the previous intersection till the intersection with the B(H) curve. |
| 4 | The new intersection point allows drawing the targeted load line as shown on the graph above. |