Brian W. Peticolas

Abstract: 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. Historical data on the load inverter's frequency versus time profile throughout previous pumping cycles, which resulted in nearly constant turbogenerator power requirements, is utilized to further reduce variations in power.

TL;DR: In this article, a turbogenerator/motor controller with a microprocessor based inverter having multiple modes of operation with an energy storage and discharge system including an ancillary electric storage device, such as a battery, connected to the generator controller through control electronics.

TL;DR: In this article, a microprocessor-based inverter is used to accelerate a gas turbine to reach a self-sustaining gas turbine operating conditions, where the microprocessor monitors turbine conditions and controls fuel flow to the gas turbine combustor.

TL;DR: In this article, a turbogenerator/motor controller with a microprocessor-based control system having a synchronous condenser, line commutated inverter, and a battery coupled to the turbo-generator is presented.

TL;DR: In this paper, a controller for a permanent magnet turbogenerator/motor having a pulse width modulated inverter and a rectifier bridge is presented, where the inverter has a positive section connected to the positive section magnetic winding of the pulse width modulation inverter, and a negative section connected with the separate negative section magnetic windings of the pulsed width modulating inverter.