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Air Gap DC

Linear air gap model of a DC machine

 

Description

Connections

Constants

Parameters

Initial Conditions

See Also

Description

The linear model of the air gap of a DC machine, models the air gap without saturation effects. Induced excitation voltage is calculated from derflux, where flux is the excitation inductance multiplied by the excitation current. The induced armature voltage is found by multiplying flux by angular velocity.

Connections

Name

Description

flange

Flange

support

Support at which the reaction torque is acting

pinap

Positive armature pin

pinep

Positive pin

pinan

Negative armature pin

pinen

Negative pin

Constants

Symbol

Value

Units

Description

m

3

-

Number of phases

Parameters

Symbol

Default

Units

Description

Modelica ID

Turns Ratio

-

-

# armature turns# excitation winding turns

turnsRatio

Le

-

H

Excitation inductance

Le

Initial Conditions

Symbol

Units

Description

Modelica ID

ω0

rads

Angular velocity

omega(0)

vei0

V

Voltage drop across field excitation inductance

vei(0)

ie0

A

Excitation current

ie(0)

ψe0

Wb

Excitation flux

psi_e(0)

vai0

V

Induced armature voltage

vai(0)

ia0

A

Armature current

ia(0)

τ0

Nm

The electromagnetic torque

tau(0)

See Also

Machines Overview

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

 

 

 

 

 


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