High-speed high-pole count generators

Details High-speed high-pole count generators High-speed high-pole count generators

H - Electricity

02

K

H02K 7/18 (2006.01) F02C 7/32 (2006.01) F02C 7/36 (2006.01) H02K 1/00 (2006.01) H02K 3/00 (2006.01) H02P 9/00 (2006.01)

Patent

CA 2612820

A system for generating supplemental electrical power from the low-pressure (LP) turbine spool (30) of a turbofan engine (10) includes a high-speed, high magnetic pole count, generator (50), a gearbox (44), a controller (52) and a power converter (54). The LP turbine spool (30)is mechanically coupled to the generator (50) portion by the gearbox (44) for driving the generator portion (50). The controller portion (52) has a speed-sensing element for sensing the LP turbine speed. The controller portion (54) disables the power converter (54) when the generator (50) exceeds a predetermined speed, and enables the power converter (54) when the generator portion (50) is less or equal to the predetermined speed. The effective load on the generator (50) is reduced to approximately zero when the LP turbine spool (30) exceeds the predetermined speed, permitting the generator (50) to be electrically bound up to the predetermined speed and mechanically bound in excess of the predetermined speed.

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