DC PM Machine - Commutators and brushes
Motor Factory - The design
Introduction
The sections of Motor Factory dedicated to the Permanent Magnet DC machine are quite like the ones available for the Synchronous Machine with Permanent Magnets and Inner Rotor.
New sections allow to define the WINDING and the COMMUTATOR – Commutator segments and brushes.
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The DC Machine - PM Field - Commutators and brushes – Inner Rotor The design environment in Motor Factory |
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| 1 | The design environment |
| 2 | In the rotor area, two new sections are available: The WINDING, the COMMUTATOR |
| 3 | In the material section, the new active regions of the machine are considered. |
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| Inner slots and Outer magnets for designing the Permanent magnet DC machine |
The winding
In the section WINDING of Motor Factory, a scrolling selection bar where Scheme, Coil, Insulation, End-winding and X-Factors can be selected.
In the section Scheme the winding architecture and the connections to the commutator segments are designed.
- Automatic mode where the winding architecture is automatically built based on the number of slots and poles.
- An easy mode to choose a solution among those FluxMotor® proposes.
- Advanced mode, to allow the user to define any specific input parameters.
An illustration of the winding environment is presented below.
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The DC Machine - PM Field - Commutators and brushes – Inner Rotor WINDING design area – Overview |
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| 1 | Selection of the ROTOR subset: WINDING panel (Click on the icon WINDING) |
| 2 | All the required user inputs to define the winding are available in the “WINDING” panel (right part). |
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Once a winding is defined, the corresponding results are automatically displayed in the form of a winding report. Visualization of the winding characteristics (inputs, settings, materials, etc.) are possible. Scrollbars allow browsing the whole document rapidly and give an overview of all the results. Using scrollbars, complete data can be accessed and visualized. |
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A section scrolling bar allows choosing the section in which user inputs are defined. Scrolling selection bar where Winding architecture, Coil, Insulation, End-winding and X-Factor sections can be selected |
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Three modes of winding allow to define and build the winding
architecture:
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| 6 | User input parameter fields to enter the values according to the considered mode. |
The Commutator and Brushes
A new environment allows for the design of the Commutator segments and their location and support on the shaft.
Inside the ROTOR subset, the COMMUTATOR panel, the commutator and the brushes are illustrated with the motor axial and radial views.
The commutator design is defined by geometrical and electrical parameters.
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| Design of the commutator segments and their support - Geometrical and electrical parameters |
There is a brush design tab to introduce brush related parameters.
- Auto: Brushes dimensions and angular position are automatically calculated by FluxMotor to get the best fit with the defined winding.
- User: Brushes dimensions and angular position are defined by the user.
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| Design of the commutator brush – Auto or User mode - Inputs |