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MapleSim Hydraulics Library from Modelon

Asynchron No States  AC Induction Machine

This component describes the torque of an electrical asynchron machine as a function of slip.

Assumptions

Very simple component assuming sinusoidal symmetrical three-phase supply voltages and steady state torque.

Limitations

The component does not describe the transients while starting or stopping a machine.

 

Equations

Variables

Connections

Parameters

Equations

slip=1ww0

tau&equals;2peaktorqueslippulloutslip+pulloutslipslip1100000<slippulloutslip0otherwise

w=`&PartialD;`tφ

`&phi;`a=φ

`&phi;`b=φ

τ=`flange_a.tau`+`flange_b.tau`

Variables

Name

Value

Units

Description

Modelica ID

slip

 

 

 

slip

τ

 

Nm

 

tau

φ

 

rad

Rotation angle of component (= flange_a.phi = flange_b.phi)

phi

w

 

rads

Absolute angular velocity of component

w

Connections

Name

Description

Modelica ID

flangea

(left) driving flange (flange axis directed INTO cut plane)

flange_a

flangeb

(right) driven flange (flange axis directed OUT OF cut plane)

flange_b

Parameters

Name

Default

Units

Description

Modelica ID

w0

157.08

rads

Angular frequency

w0

pullout slip

0.15

 

Pull-out slip

pulloutslip

peaktorque

300

Nm

Peak torque

peaktorque

See Also

Pumps

MapleSim Hydraulics Library from Modelon Overview

 


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