1.2 GENERAL DESCRIPTION
1.2.1 Generator (arep)
The synchronous generator is an alternating-current
machine, without ring or brush. The machine is cooled by
the flow of air through the machine.
For a better comprehension, use the drawings of chapter
10.
The Automatic Voltage Regulator (item 6) supplies the
exciter field (static part ; item 1) in DC current.
The Exciter works as a reversed alternator.
The Exciter armature (rotating part ; item 2) generate a
three-phase current which supplies the Rotating diodes
bridge (rotating part ; item 3)
The Rotating diodes bridge (rotating part ; item 3) rectifies
the three phases current in DC current which supplies the
Revolving field (rotating part ; item 4)
The revolving field (rotating part ; item 4) excites the
alternator armature (static part ; item 5) which generates a
three phases current
5
4
3
1
2
6
H1
H3
1- Excitation field winding
2- Excitation armature
3- Rotating diodes bridge
4- Revolving field
5- Alternator armature
6- Automatic Voltage Regulator
H1- AREP winding detect harmonic 1
H3- AREP winding detect harmonic 3
1.2.2 Excitation system
The excitation system is fitted at the Non Drive End side
Electric Power Generation
Installation and maintenance
5654
en - 2017.
10
/
a
LSA 5
2
.2
MHV
Industrial Range Alternators
- 4 pole
5
