H - Electricity – 02 – P
Patent
H - Electricity
02
P
H02P 9/00 (2006.01) F02C 9/56 (2006.01) F04B 47/02 (2006.01) H02K 7/18 (2006.01) H02P 9/04 (2006.01)
Patent
CA 2279320
A power control system for a turbogenerator which provides electrical power to one or more pump-jack oil wells. When the induction motor of a pump-jack oil well is powered by three-phase utility power, the speed of the pump-jack shaft varies only slightly over the pumping cycle but the utility power requirements can vary by four times the average pumping power. This power variation makes it impractical to power a pump-jack oil well with a stand-alone turbogenerator controlled by a conventional power control system. This power control system comprises a turbogenerator inverter, a load inverter, and a central processing unit which controls the frequency and voltage/current of each inverter. Throughout the oil well's pumping cycle, the central processing unit increases or decreases the frequency of the load inverter in order to axially accelerate and decelerate the masses of the down hole steel pump rods and oil, and to rotationally accelerate and decelerate the masses of the motor rotors and counter balance weights. This allows kinetic energy to be alternately stored in and extracted from the moving masses of the oil well and allows the oil pumping power to be precisely controlled throughout the pumping cycle, resulting in a constant turbogenerator power requirement.
Bosley Robert W.
Edelman Edward C.
Lampe Steven W.
Peticolas Brian W.
Capstone Turbine Corporation
Piasetzki & Nenniger Llp
LandOfFree
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