Motor Thermal Model

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Class in Zendir.Classes | Inherits from ThermalModel

Declaration

class MotorThermalModel;

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Description

A thermal model specifically for DC motor components. Calculates heat generation from electrical losses (I²R copper losses) and mechanical losses (friction). Can only be attached to classes inheriting from MotorBase.

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Properties

Declared	Description
BrushLosses	Power dissipated in brushes
BrushVoltageDrop	Brush voltage drop (for brushed DC motors).Set to 0 for brushless motors.
CopperLosses	Power dissipated as copper (I²R) losses
EddyCurrentLossCoeff	Eddy current loss coefficient [W/(rad/s)²]
EffectiveResistanceRatio	Ratio of effective resistance to nominal resistance due to temperature
EnableIronLosses	Enable iron loss calculations (eddy current + hysteresis)
EnableTemperatureEffects	Enable temperature-dependent resistance effects.When enabled, armature resistance increases with temperature.
FrictionLosses	Power dissipated as mechanical friction losses
HysteresisLossCoeff	Hysteresis loss coefficient [W/(rad/s)]
IronLosses	Power dissipated as iron (eddy + hysteresis) losses
IsOvertemperature	Flag indicating motor is in overtemperature condition
OvertemperatureHysteresis	Hysteresis for overtemperature flag reset
OvertemperatureThreshold	Temperature threshold for overtemperature warning/protection
ReferenceTemperature	Reference temperature at which ArmatureResistance is specified
TemperatureCoefficient	Temperature coefficient of resistance (typically 0.00393 for copper)
TotalLosses	Total power dissipated as heat (equals PowerGeneration)

Inherited	Description
AnalysisModel	The analysis model type used for this thermal model, which determineshow the thermal calculations are performed.
Emissivity	The emissivity of the object that this model isattached to, for radiative heat transfer calculations.
EnableSpaceRadiation	A flag whether to radiate any remaining heat as a remainder of thesurface area if no connections are present to space.
IdealTemperature	The ideal temperature of the object that this model isattached to, for thermal management calculations.
IsEnabled	Is true if the object is currently enabled.
Name	The display name or tag of this object.
NetPower	The net power of the object that this model is attached to,for thermal calculations. This is the total power generatedminus the total power lost through radiation and is used forthe calculation of the transfer.
Out_ThermalMsg	Output thermal message containing the thermal data produced bythe system.
Parent	The currently attached parent object.
PowerGeneration	The total amount of power generated internally by the objectthat this model is attached to, for thermal calculations.Positive for heating, negative for cooling (e.g. fuel tank gas expansion).
SpecificHeatCapacity	The specific heat capacity of the object that this model isattached to, for thermal calculations.
SurfaceArea	The total surface area of the object that this model isattached to, for radiative heat transfer calculations.
Temperature	The current temperature of the object that this model isattached to.
TemperatureDot	The change in temperature of the object that this model isattached to, for thermal calculations over time.
ThermalConductivity	The thermal conductivity of the object that this model isattached to, for thermal calculations.
Thickness	The thickness of the object that this model isattached to, for thermal calculations.

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Methods

Inherited	Description
Connect	Connects this thermal model to another thermal model with the specifiedsurface area and connection type.
Disconnect	Disconnects two thermal models, removing any thermal connections between them.
FindParentWithID	Returns an attached parent that satisfies the specified ID.
FindParentWithType	Returns an attached parent that satisfies the specified type.
FindRootWithID	Returns a root object that satisfies the specified ID.
FindRootWithType	Returns a root object that satisfies the specified type.
GetRootConnectionCount	Gets the number of thermal connections associated with the root objectthat this model is attached to.
GetRootModels	Gets the thermal models associated with a given physical object, based onthe root object that this model is attached to.
GetThermalMass	Returns the thermal mass of the object this model is attached to.
GetTotalConnectionArea	Gets the total connection area for a given thermal model.
Initialise	Loads the thermal model for a lookup analysis model. This willattempt to load the CSV file specified in the file path. Thisassumes the first column is time and the ‘indexed’ column is temperature.