modelBrush
Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n), Modelica.Thermal.HeatTransfer.Interfaces.PartialElementaryConditionalHeatPortWithoutT (Partial model to include a conditional HeatPort in order to dissipate losses, used for textual modeling, i.e., for elementary models).
Information
Model of voltage drop and losses of carbon brushes. For currents between -ILinear and ILinear
the voltage drop shows a linear behavior as depicted in Fig. 1.
For positive currents greater or equal than ILinear the voltage drop equals V.
For negative currents less or equal than -ILinear the voltage drop equals -V.
 |
| Fig. 1: Model of voltage drop of carbon brushes |
Note
The voltage drop v is the total voltage drop of all series connected brushes.
See also
If it is desired to neglect brush losses, set brushParameters.V = 0 (this is the default).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Machines.Losses.BrushParameters | brushParameters | Brush loss parameters | |
| Boolean | useHeatPort (from PartialElementaryConditionalHeatPortWithoutT) | false | = true, if heatPort is enabled |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| PositivePin | p (from TwoPin) | Positive electrical pin | |
| NegativePin | n (from TwoPin) | Negative electrical pin | |
| HeatTransfer.Interfaces.HeatPort_a | heatPort (from PartialElementaryConditionalHeatPortWithoutT) | Optional port to which dissipated losses are transported in form of heat |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Voltage | v (from TwoPin) | Voltage drop of the two pins (= p.v - n.v) | |
| SI.Current | i (from OnePort) | Current flowing from pin p to pin n | |
| SI.Power | lossPower (from PartialElementaryConditionalHeatPortWithoutT) | Loss power leaving component via heatPort (> 0, if heat is flowing out of component) |