Presentation on Elec Machines
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Transcript of Presentation on Elec Machines
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Machinegeometry
Physicalproperties
A virtual test procedure toreplace the classical testshop
Characteristicquantities
Reactances andtime constants
Research project financed by CTI, Alstom and Electriciens Romands
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Physicalproperties
Geometricalparameters
Coupledcircuits
Standstill
frequencyresponsetest
Equivalentdiagram
calculation
Othertests
Short-circuittest
2D FEM:
Structure of the virtual test procedure
Step 1Step 1 Step 2 Step 3
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
View of conductors, iron and sliding band mesh
Detail of rotortooth and damper
bar mesh
Step 1
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Physicalproperties
Geometricalparameters
Coupledcircuits
Standstill
frequencyresponsetest
Equivalentdiagram
calculation
Othertests
Short-circuittest
2D FEM:
Structure of the virtual test procedure
Step 1 Step 2Step 2 Step 3
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Magnetic field distribution duringno load short-circuit test
Step 2
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Armature and excitation currentsduring no load short-circuit test
Step 2
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Physicalproperties
Geometricalparameters
Coupledcircuits
Standstill
frequencyresponsetest
Equivalentdiagram
calculation
Othertests
Short-circuittest
2D FEM:
Structure of the virtual test procedure
Step 1 Step 3Step 2 Step 3
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Analysis of the armature currents
Step 3
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Analysis of the armature currents
Step 3
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8/8/2019 Presentation on Elec Machines
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Swiss Federal Institute of Technology, Electrical Machines Laboratory (LME)
MEDIUM SIZED AND LARGE ELECTRICAL MACHINES
Reverse check of the field and armature currents
Ms1.vis + iabc30%.vis5/24/00
Ia [A] ia [A]
Time [sec]21.510.50
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Ms1.vis + iabc30%.vis5/24/ 00
If [A] if [A]
Time [sec]21.510.50
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Step 3
Numerical simulation of the same testusing the equivalent circuits obtainedfrom the virtual procedure ( blue )
Comparison with the test results of thevirtual procedure ( red )
