F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
F04D 27/00 (2006.01) F04B 49/06 (2006.01) F04C 23/00 (2006.01) F04C 29/00 (2006.01) F04D 15/00 (2006.01) F04D 27/02 (2006.01) H02P 27/06 (2006.01)
Patent
CA 2399327
The invention relates to a process and device for feedback-controlling the speed of an electric motor (10) driving a rotary machine (6), in particular a pump or fan, according to the capacity requirement at the rotary machine, which is variable with time on the consumer side (4, 8) thereof, using a feedback controller (16) the output of which determines the speed of the electric motor (10). The process according to the invention is characterized in that the electrical power (P) actually taken up by the electric motor (10) is measured and in that a signal representing the electrical power measured is produced and supplied as input to the feedback controller (16), where it is converted into the desired output according to a predetermined or right then calculated characteristic curve (P install(Q)).
Pumpenfabrik Ernst Vogel Gesellschaft M.b.h.
Riches Mckenzie & Herbert Llp
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