DC Electrical Excited - MapleSim Help
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DC Electrical Excited

Electrical shunt/separate excited linear DC machine

 

Description

Connections

Parameters

Modelica Standard Library

Description

The DC Electrical Excited component models a DC Machine with electrical shunt or separate excitation. Armature resistance and inductance are modeled directly after the armature pins, using an Air Gap DC model.

The following losses are modeled:

• 

heat losses in the temperature dependent armature winding resistance

• 

heat losses in the temperature dependent excitation winding resistance

• 

brush losses in the armature circuit

• 

friction losses

• 

core losses (only eddy current losses, no hysteresis losses)

• 

stray load losses

No saturation is modeled.  Shunt or separate excitation is defined by the user's external circuit.

Connections

Name

Description

Modelica ID

Shaft

flange

Negative armature pin

pin_an

Positive armature pin

pin_ap

Negative excitation pin

pin_en

Positive excitation pin

pin_ep

Support at which the reaction torque is acting

support

Optional thermal port

thermalPort

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

0.15

Rotor moment of inertia

Jr

Stator moment of inertia

Js

293.15

Operational armature temperature

TaOperational

293.15

Operational (shunt) excitation temperature

TeOperational

Use Support Flange

 

True (checked) means enable stator support

useSupport

Use Thermal Port

 

True (checked) means thermal port is enabled

useThermalPort

Excitation Parameters

Name

Default

Units

Description

Modelica ID

0

Temperature coefficient of excitation resistance

alpha20e

1

Nominal excitation current

IeNominal

1

Total field excitation inductance

Le

100

Warm field excitation resistance

Re

0

 

Stray fraction of total excitation inductance

sigmae

293.15

Reference temperature of excitation resistance

TeRef

Brush Losses

Name

Default

Units

Description

Modelica ID

Total voltage drop of brushes, if

V

Current indicating linear voltage region of brush voltage drop

ILinear

See Brush for details of the brush loss model.

Core Losses

Name

Default

Units

Description

Modelica ID

Reference rotor core losses

PRef

Reference RMS voltage

VRef

Reference angular velocity

wRef

See Core for details of the core loss model.

Friction Losses

Name

Default

Units

Description

Modelica ID

Reference friction losses

PRef

Reference angular velocity

wRef

Exponent of friction

power_w

See Friction for details of the friction loss model.

Stray Load Losses

Name

Default

Units

Description

Modelica ID

Reference RMS current

IRef

Reference friction losses

PRef

Reference angular velocity

wRef

Exponent of stray load loss

power_w

See Stray Load for details of the stray load loss model.

Nominal Parameters Parameters

Name

Default

Units

Description

Modelica ID

100

Nominal armature current

IaNominal

Nominal rotational speed

wNominal

100

Nominal armature voltage

VaNominal

293.15

Nominal armature temperature

TaNominal

Nominal Resistances And Inductances Parameters

Name

Default

Units

Description

Modelica ID

0

Temperature coefficient of armature resistance

alpha20a

0.0015

Armature inductance

La

0.05

Warm armature resistance

Ra

293.15

Reference temperature of armature resistance

TaRef

Modelica Standard Library

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

DC Machines

Electrical Library

Electrical Machines

 


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