Double air gap alternator

Details Double air gap alternator Double air gap alternator

H - Electricity

02

K

310/84

H02K 16/04 (2006.01) H02K 21/12 (2006.01)

Patent

CA 2024384

Abstract of the Disclosure An alternator includes a generally cylindrical hollow housing with a soft iron outer core mounted therein with a plurality of teeth projecting radially inwardly therefrom. Each of the outer core teeth has a wire wrapped therearound to form a coil, the coils being connected together and to at least one electrical wire extending out of the housing so as to conduct electricity induced in the coils. A hollow cylindrical rotor formed of magnets is rotatably mounted within the housing, radially inwardly of the outer core and coaxial thereto. Each of the rotor magnets has one pole directed radially outwardly and its opposite pole directed radially inwardly, the magnets being arranged such that the outwardly and inwardly directed magnetic fields alternate around the rotor. A soft iron inner core is connected to the housing and mounted radially inwardly of the rotor. The inner core has a plurality of teeth projecting radially outwardly therefrom, each tooth having a wire coil therearound. The inner core coils are connected together and to at least one electrical wire extending from the housing to conduct electricity induced in the inner core coils. Rotation of the rotor will induce electricity in the coils on both the inner and outer cores.

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