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QuasiStatic IM Slip Ring

Induction machine with slip ring rotor

 

Description

Connections

Parameters

Modelica Standard Library

Description

The QuasiStatic IM Slip Ring component models a multiphase induction machine with a slip-ring rotor.

The resistances and stray inductances of the machine always refer to either stator or rotor.  The symmetry of the stator, rotor and supply is assumed. The number of stator and rotor phases may be different.

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

Connections

Name

Description

Modelica ID

powerBalance

Power balance

powerBalance

flange

Shaft

flange

support

Support at which the reaction torque is acting

support

plugsp

Positive plug of stator

plug_sp

plugsn

Negative plug of stator

plug_sn

plugrn

Negative plug of rotor

plug_rn

plugrp

Positive plug of rotor

plug_rp

thermalPort

Thermal port of induction machines

thermalPort

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

m

3

 

Number of stator phases

m

mr

m

 

Number of rotor phases

mr

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

fs,nom

50

Hz

Nominal frequency

fsNominal

Ts,oper

293.15

K

Operational temperature of stator resistance

TsOperational

Tr,oper

293.15

K

Operational temperature of rotor resistance

TrOperational

Use Support Flange

false

 

True (checked) means enable stator support flange

useSupport

Effective Stator Turns

1

 

Effective number of stator turns

effectiveStatorTurns

Use Thermal Port

false

 

True (checked) means thermal port is enabled

useThermalPort

Use Turns Ratio

true

 

Use TurnsRatio or calculate from locked-rotor voltage?

useTurnsRatio

Turns Ratio

1

 

Effective number of stator turns / effective number of rotor turns

TurnsRatio

Vs,nom

100

V

Nominal stator voltage per phase

VsNominal

Vr,locked

 

V

Locked rotor voltage per phase

VrLockedRotor

Lr,0

 

H

 

Lrzero

Ls,0

 

H

 

Lszero

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.

Stray Load Losses

Name

Default

Units

Description

Modelica ID

Iref

Ianom

W

Reference RMS current

IRef

Pref

0

W

Reference friction losses

PRef

ωref

ωnom

rads

Reference angular velocity

wRef

pω

1

V

Exponent of stray load loss

power_w

• 

See Stray Load for details of the stray load 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

 

H

Main field inductance

Lm

Lrσ

 

H

Rotor stray inductance per phase

Lrsigma

Lsσ

 

H

Stator stray inductance per phase

Lssigma

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

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

Magnetic Quasistatic Fundamental Wave Basic Machine Induction Machines

Magnetic Quasistatic Fundamental Wave Basic Machines

Magnetic Quasistatic Fundamental Wave Overview

Magnetics Library