Date post: | 31-Dec-2015 |
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2
Cylindrical rotor (turbo-generator)
Institute of Mechatronics and Information Systems
Synchronous machine
4
Institute of Mechatronics and Information Systems
Synchronous machineHydro-generator (salient pole rotor)
5
Institute of Mechatronics and Information Systems
Synchronous machineSalient pole rotor (hydro-generator)
7
Institute of Mechatronics and Information Systems
Synchronous motorSurface mounted permanent magnet rotor
8
Institute of Mechatronics and Information Systems
Synchronous motor rotorPermanent magnet configurations
9
Phasor graph for a cylindrical rotor
Institute of Mechatronics and Information Systems
Synchronous motor
U
I
aaRIaaXI
aaXI
eE
fE
f
ea
10
Phasor graph for a salient pole rotor
Institute of Mechatronics and Information Systems
Synchronous motor
U
I
aaRIaaXI
dE
eE
fE
f
ea
qE
11
Torque determination from a simplified phasor graph
Institute of Mechatronics and Information Systems
Synchronous motor
U
I
sinEcosXI fsa
cosUIn2
mPM
ss
saXI
fE
sinX
UEn2
mM
s
f
s
12
Torque – cylindrical rotor
Institute of Mechatronics and Information Systems
Synchronous motor
-3
-2
-1
0
1
2
3
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180
d [°]
M/M
N [
-]
GENERATOR
MOTOR
13
Constant voltage, constant excitation, varying power
Institute of Mechatronics and Information Systems
Synchronous motor – cylindrical rotor
GENERATOR MOTOR
U
I
saXI
fE
14
Constant voltage, constant excitation, varying power
Institute of Mechatronics and Information Systems
Synchronous motor – cylindrical rotor
GENERATOR MOTOR
U
I
saXI
fE
15
Salient pole rotor – reluctance change
Institute of Mechatronics and Information Systems
Synchronous motor
GENERATOR
MOTOR
16
Torque – salient pole rotor
Institute of Mechatronics and Information Systems
Synchronous motor
-3
-2
-1
0
1
2
3
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180
d [°]
M/M
N [
-]
GENERATOR
MOTOR
17
Constant voltage, constant excitation, varying power
Institute of Mechatronics and Information Systems
Synchronous motor – salient pole rotor
GENERATOR MOTOR
U
I
ddXIfE
UNSTABLEUNSTABLE
qqXI
dIqI
18
Power factor
Institute of Mechatronics and Information Systems
Synchronous motor
INDUCTIVE CAPACITIVE
19
V - curves
Institute of Mechatronics and Information Systems
Synchronous motor
UNSTABLE
INDUCTIVE CAPACITIVE
21
Start-up procedures1. Auxiliary machine2. Asynchronous start-up3. Varying frequency and voltage
Institute of Mechatronics and Information Systems
Synchronous motor
22
Asynchronous start-up procedure:1. shunting the field winding with a resistor2. asynchronous start-up with reduced voltage3. switching to nominal voltage4. disconnecting the shunting resistor5. energising the field winding
Institute of Mechatronics and Information Systems
Synchronous motor