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pushbutton.
TMUELAT02-T01 LEVEL 3
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MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O - GENERATOR CONTROL
TMUELAT02-P01 LEVEL 3
EFFECTIVITY 24-24-00 Page 3
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O
SPEED REGULATION
The servovalve, which regulates the hydraulic motor
speed, is electrically controlled by the speed
regulation module of the control unit.
The GCU maintains the CSM/G at constant speed by:
- monitoring the frequency of the PMG and
- comparing it with a quartz crystal controlled
reference.
The resulting error signal is then used to control the
CSM/G servo-valve to a more open or close position.
TMUELAT02-T02 LEVEL 3
EFFECTIVITY 24-24-00 Page 4
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MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O - SPEED REGULATION
TMUELAT02-P02 LEVEL 3
EFFECTIVITY 24-24-00 Page 5
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O
VOLTAGE REGULATION
The PMG supplies the exciter field through a voltage
regulation module.
The GCU maintains the CSM/G output voltage constant
by monitoring the voltage at the Point Of Regulation
(POR).
The output voltage is compared to 115V reference and
used as an operational error to regulate the field
current.
TMUELAT02-T03 LEVEL 3
EFFECTIVITY 24-24-00 Page 6
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MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O - VOLTAGE REGULATION
TMUELAT02-P03 LEVEL 3
EFFECTIVITY 24-24-00 Page 7
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O
GENERATOR MONITORING
The protection module protects the network and the
generator by controlling the associated GLC, the
generator field current and the solenoid control valve.
The protections are the following:
- Over/Under voltage.
- Over/Under frequency.
- Shorted PMG.
- Fast overspeed shutdown.
When a failure is detected, relay K1 opens to
de-energize the solenoid control valve: the generator
stops operating.
The MAN ON pushbutton must be pressed in to reset the
protection module and to recover the Solenoid Control
valve power supply.
TMUELAT02-T04 LEVEL 3
EFFECTIVITY 24-24-00 Page 8
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MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O - GENERATOR MONITORING
TMUELAT02-P04 LEVEL 3
EFFECTIVITY 24-24-00 Page 9
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O
BITE
The CSM/G GCU provides a type 3 BITE system.
The CSM/G GCU is linked to the CFDIU by two discrete
links (type 3 system) and has a simplified and limited
interactive dialog. Tests can be launched from the GCU
EMER page on the MCDU.
TMUELAT02-T05 LEVEL 3
EFFECTIVITY 24-24-00 Page 10
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AC GENERATION - CONSTANT SPEED MOTOR/GENERATOR CONTROL UNIT D/O - BITE
TMUELAT02-P05 LEVEL 3
EFFECTIVITY 24-24-00 Page 11
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SELF EXAMINATION
What is the solenoid control valve normally
　
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