Alternator

Alternators are used on internal combustion engines to charge the battery and to power the electrical system when its engine is running.

Alternators generate electricity by the same principle as DC generators. When magnetic field lines cut across a conductor, a current is induced in the conductor.

Alternators by Brand

AGCO
AIFO
Allis Chalmers
Ariens
Atlas Copco
Austin Western
Baker
Barber Greene
BE
BMW
Bobcat
Briggs and Stratton
BUKH Marine
CASE
Caterpillar
Champion
CLASS
Club Car
Cockshutt
Crusader
Cub Cadet
Cummins
Cushman
Daewoo
Denso
Detroit Diesel
Deutz
Dresser
Drott Mfg.
Elgin Sweeper
Euclid
Ez-go
Fiat-allis
Fiat-hitachi
Ford
Fuchs
Galion
Gehl
Grasshopper
Gravely
Gutbrod
Harley Davidson
Hatz
Honda
Hy-capacity
Hyster
Ingersoll Rand
International Harvester
Isuzu
J.C. Bamford
Jacobsen
John Bean
John Deere
Kawasaki
Kohler
Komatsu
Kubota
Leyland Daf
Liebherr
Lister-petters
Mahindra
Marine Alternators
Mariner
Massey Ferguson
Mercruiser
Mercury
Minneapolis Moline
Mitsubishi
Motorola
New Holland
Nissan
Oliver
OMC
Onan
Pleasurecraft
Powerhorse
Renault
Roper
Same
Samsung
Simplicity
Sole Diesel
Steiger
Steiner
Sumitomo Yale
TCM Equipment
Tecumseh
Teledyne - Continental
Teledyne - Wisconsin
Terex
Thermo King
Thomas Equipment
Timberjack
Tohatsu
Toro
Towmotor
Toyota
Valeo
Versatile
Volvo
Volvo-penta
Wabco
Waukesha
White
Yale
Yamaha
Yanmar

In general, an alternator has a stationary part (stator) and a rotating part (rotor). The stator contains windings of conductors and the rotor contains a moving magnetic field. The field cuts across the conductors, generating an electrical current, as the mechanical input causes the rotor to turn. The field may be induced (as is in induction motors) or in the form of permanent magnets. Permanent magnet alternators have the potential to be the most efficient since no mechanical energy is used to create the field. In practice many alternators create the field by using a DC feed through slip rings to the rotor windings.

Source and additional information: Alternator