Principle
Here is a summary of the Prius 2004 IPMSM stator input parameters. "Script syntax" means how to set dimensions in scripting mode. In GUI mode the same variables names are used, for example gap stands for the airgap width. Note that MANATEE assumes that the airgap is the minimum distance between rotor and stator magnetic sheets, so it is not the distance from top magnet to lamination bore radius in surface permanent magnet machines.
| Description | Value | Script syntax |
|---|---|---|
| Stator outer diameter | 269.24 mm | Input.Geometry.Dsy=269.24e-3 |
| Stator inner diameter | 161.9 mm | Input.Geometry.Dsbo=161.9e-3 |
| Airgap width | 0.75 mm | Input.Geometry.gap=0.75e-3 |
| Rotor back yoke diameter (shaft diameter) |
110.64 mm | Input.Geometry.Dry=110.64e-3 |
| Description | Value | Script syntax |
|---|---|---|
| Stator length (without airducts) | 83.82 mm | Input.Geometry.Lst1=83.82e-3 |
| Stacking factor | 95% | Input.Geometry.Kst1=0.95 |
| Skew | No | Input.Geometry.skew_rates=0 |
| Radial ventilation ducts | No | Input.Thermics.Nrvds=0 |
| Axial ventilation ducts | No | Input.Thermics.Navds=[0] |
| Material | M400-50A | Input.Material.mat_lam1=’M400-50A’ |
| Description | Value | Script syntax |
|---|---|---|
| Number of slot | 48 | Input.Geometry.Zs=48 |
| Slot shape | 11 | Input.Geometry.type_slot_shapes = 11 |
| Slot isthmus height | 1 mm | Input.Geometry.H0s = 1e-3 |
| Wedge height | 0 mm | Input.Geometry.H1s = 0 |
| Slot height | 33.3 mm | Input.Geometry.H2s = 33.3e-3 |
| Slot opening width | 1.93 mm | Input.Geometry.W0s = 1.93e-3 |
| Wedge width | 5 mm | Input.Geometry.W1s = 5e-3 |
| Slot bottom width | 8 mm | Input.Geometry.W2s = 8e-3 |
| Slot bottom radius | 4 mm | Input.Geometry.R1s = 4e-3 |
GUI implementation
Overall dimensions
Firstly, the overall lamination dimensions have to be input:
- Step 2: Machine Dimensions
Contrary to the scripting method, there is only one method available to define laminations: the inner and outer diameters of the stator and rotor laminations are needed and the airgap width is computed accordingly.
Stator core
Secondly, the stator core dimensions have to be input:
- Step 3: Stator Lamination
The stator lamination material must be chosen as ’M400-50A’in the material library.
Stator slots
Finally, the slot shape 11 is selected following MANATEE slot schematics.
- Step 4: Stator Slot
One can verify that slot and lamination definitions are correct by checking the outputs (surface, tooth width...) or by clicking on "Preview". Note that the output values and the Preview are available only if the slot is correct. Otherwise, by clicking on "Next" an error message should explain what is wrong with your slot.
- Stator Slot preview
Scripting implementation
In scripting mode you can modify all the lines of the script machine_IPMSM_A_test.m with the values specified at the beginning of this article. You can use the "Go To" feature of Matlab GUI to navigate more quickly in the script sections.
Overall dimensions
Contrary to GUI mode, there are several ways to define the stator dimensions to be able to run sensitivity study or optimization on yoke height or diameters. The laminations can either be defined:
- using the external diameter Dsy and the yoke height Hsy (the inner diameter being deduced from the slot geometry)
- using the external diameter Dsy and the inner diameter Dsbo (the equivalent yoke height being deduced from the slot geometry).
The machine is by default built from stator outer diameter to rotor inner diameter. To specify the overall dimensions in scripting mode, simply edit change the values of machine_IPMSM_A_test.m with the ones presented in the table "Overall dimensions’).
Stator core
The lamination material is set by Input.Material.mat_lam1 = ’M400-50A’. All the material parameters are loaded from the material library. In scripting mode, new materials can be defined directly by editing the script init_material_library.m as shown in the article on the material library.
The B(H) curve must be defined in a .txt file (M400-50AJ.txt) in the MaterialData folder. A specific article deals with how to define a new B(H) curve. Some post-processings (e.g. plot_BH function) allow to check the B(H) curves after calculation.
To specify the stator core dimensions in scripting mode, simply edit change the values of machine_IPMSM_A_test.m with the ones presented in the table "Stator core parameters".
Stator slot
To choose the slot type in scripting mode it is recommended to browse the slot library. Generally Input.Geometry.W0s always stands for the stator slot opening width, while Input.Geometry.H0s stands for stator slot isthmus height.
Depending on the slot type, some slot geometrical parameters may be defined as a vector of 2 elements, where the second element indicates whether the unit is in meter (0) or in radian (1). This is the case of H1 in the current slot type, which can be defined as a height in m or an angle in radian.
To specify the stator slot dimensions in scripting mode, simply edit change the values of machine_IPMSM_A_test.m with the ones presented in the table "Stator slot parameters".
