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AIM Slip Ring

Asynchronous induction machine with slip-ring rotor

 

Description

Connections

Parameters

Modelica Standard Library

Description

The AIM Slip Ring component models a three-phase asynchronous induction machine with a slipring rotor. The resistance and stray inductance of the stator and rotor are modeled directly in the stator and rotor phases, with a space phasor transformation and a stator-fixed Air Gap model.

The following losses are modeled:

• 

heat losses in the temperature dependent stator winding resistances

• 

heat losses in the temperature dependent rotor winding resistances

• 

friction losses

• 

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

• 

stray load losses

The turnsRatio parameter can be obtained from the following relationship at standstill with open rotor circuit at nominal voltage and nominal frequency, using the locked-rotor voltage VR, no-load stator current I0: turnsRatioVR=VsRs+jXsσI0.

Connections

Name

Description

Modelica ID

flange

Shaft

flange

plugrn

Negative rotor plug

plug_rn

plugrp

Positive rotor plug

plug_rp

plugsn

Negative stator plug

plug_sn

plugsp

Positive stator plug

plug_sp

support

Support at which the reaction torque is acting

support

thermalPort

 

thermalPort

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

fs,nom

50

Hz

Nominal frequency

fsNominal

Jr

0.29

kgm2

Rotor moment of inertia

Jr

Js

Jr

kgm2

Stator moment of inertia

Js

p

2

 

Number of pole pairs (Integer)

p

Tr,oper

293.15

K

Operational temperature of rotor resistance

TrOperational

Ts,oper

293.15

K

Operational temperature of stator resistance

TsOperational

Vr,locked

[1]

V

Locked-rotor voltage per phase

VrLockedRotor

Vs,nom

100

V

Nominal stator voltage per phase

VsNominal

Turns Ratio

1

 

Stator turns / rotor turns  (effective number of)

turnsRatio

Use Support Flange

false

 

True (checked) means enable stator support flange

useSupport

Use Thermal Port

false

 

True (checked) means thermal port is enabled

useThermalPort

Use Turns Ratio

true

 

True (checked) means use Turns Ratio parameter

useTurnsRatio

[1] 200πfs,nomLmRs2+4π2fs,nom2Lm2+Lsσ2

Brush Losses

Name

Default

Units

Description

Modelica ID

V

0

V

Total voltage drop of brushes, if ibrush>Ilinear

V

Ilinear

0.01Ianom

A

Current indicating linear voltage region of brush voltage drop

ILinear

See Brush for details of the brush loss model.

Friction Losses

Name

Default

Units

Description

Modelica ID

Pref

0

W

Reference friction losses

PRef

ωref

ωnom

rads

Reference angular velocity

wRef

pω

2

V

Exponent of friction

power_w

See Friction for details of the friction loss model.

Rotor Core Losses

Name

Default

Units

Description

Modelica ID

Pref

0

W

Reference rotor core losses

PRef

Vref

1

V

Reference RMS voltage

VRef

ωref

1

rads

Reference angular velocity

wRef

See Core for details of the core loss model.

Stator Core Losses

Name

Default

Units

Description

Modelica ID

Pref

0

W

Reference rotor core losses

PRef

Vref

 

V

Reference RMS voltage

VRef

ωref

2πfs,nom

rads

Reference angular velocity

wRef

See Core for details of the core loss model.

Nominal Resistances And Inductances Parameters

Name

Default

Units

Description

Modelica ID

αr

0

1K

Temperature coefficient of rotor resistance at 20 degC

alpha20r

αs

0

1K

Temperature coefficient of stator resistance at 20 degC

alpha20s

Lm

[1]

H

Main field inductance

Lm

Lrσ

[1]

H

Rotor stray inductance per phase

Lrsigma

Lr,0

Lrσ

H

Rotor zero sequence inductance w.r.t. rotor side

Lrzero

Lsσ

[1]

H

Stator stray inductance per phase

Lssigma

Ls,0

Lsσ

H

Stator zero sequence inductance

Lszero

Rr

0.04

Ω

Warm rotor resistance per phase

Rr

Rs

0.03

Ω

Warm stator resistance per phase

Rs

Tr,ref

293.15

K

Reference temperature of rotor resistance

TrRef

Ts,ref

293.15

K

Reference temperature of stator resistance

TsRef

[1] 1.510.9333πfs,nom

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

Asynchronous Induction Machines

Electrical Library

Electrical Machines