1
Kermit I Harner, Joseph M Kos, John P Patrick: Wind turbine generator pitch control system. United Technologies Corporation, Donald F Bradley, July 3, 1979: US04160170 (100 worldwide citation)

Wind energy is used to drive a wind turbine, which is in turn connected to an electrical generator to produce electrical power. The pitch angle of the wind turbine blades is controlled in a closed loop manner to maintain either a constant generator speed for isolated power generating stations or whe ...


2
Joseph M Kos, John P Patrick, Kermit I Harner: Multi-mode control system for wind turbines. United Technologies Corporation, Donald F Bradley, March 11, 1980: US04193005 (88 worldwide citation)

A multi-mode electronic wind turbine control system establishes a reference blade angle for a two-bladed, horizontal axis, variable pitch wind turbine rotor, the blade angle being regulated by a hydraulic pitch change mechanism. The rotor, via appropriate shafts and a gearbox, is coupled to a synchr ...


3
John P Patrick: Wind turbine generator having integrator tracking. United Technologies Corporation, Donald F Bradley, July 17, 1979: US04161658 (63 worldwide citation)

A power generating system includes a wind turbine driven generator, the wind turbine having a wind driven rotor with a plurality of variable pitch angle blades. The blade angle is scheduled during acceleration and deceleration of the wind turbine by open loop controls to minimize stresses, and is sc ...


4
Kermit I Harner, John P Patrick, Joseph M Kos: Predicted motion wind turbine tower damping. United Technologies Corporation, M P Williams, March 6, 1984: US04435647 (63 worldwide citation)

Damping of the primary bending mode of a tower (12) mounting a wind turbine having a control (36) for providing a pitch blade angle reference signal (40) to modulate the pitch of the turbine blades (1) through a pitch change mechanism (38) for constant power is provided by generating the pitch blade ...


5
Joseph M Kos, John P Patrick, Kermit I Harner: Motion responsive wind turbine tower damping. United Technologies Corporation, M P Williams, December 13, 1983: US04420692 (52 worldwide citation)

An accelerometer (1) disposed on the support tower (12) of a wind turbine electric generating system in the vicinity of the rotor (10, 16) thereof provides a signal (1) indicative of acceleration of the tower in the direction of the rotor rotational axis. The signal (2) is passed through a band-pass ...


6
John P Patrick, Joseph M Kos, Kermit I Harner: Blade pitch angle control for a wind turbine generator. United Technologies Corporation, John Swiatocha, July 13, 1982: US04339666 (44 worldwide citation)

A blade pitch angle control for a wind turbine-generator establishing an optimum power or torque reference signal which, when operating conditions so warrant, is not limited by the nominal torque or power ratings of various turbine generator components. The reference signal is indicative of a maximu ...


7
Kermit I Harner, John P Patrick, Kenneth F Vosseller: Blade feathering system for wind turbines. United Technologies Corporation, John Swiatocha, July 31, 1984: US04462753 (17 worldwide citation)

A blade feathering system for wind turbines includes a feather actuator (299), control means (330 and 335) operatively connected thereto and an adjustment means (340) operatively connected to the control means for selectively varying the rate of operation of the feather actuator for feathering the w ...


8
Kermit I Harner, John P Patrick: Integral rocket-ramjet closed loop fuel control system. United Technologies Corporation, John D Del Ponti, July 14, 1981: US04277940 (9 worldwide citation)

In an integral rocket-ramjet having a combustor which initially serves as a rocket combustion chamber for booster propellant, and after the booster propellant is expended serves as a ramjet combustor where fuel and air are burned, a fuel control system is described for the ramjet stage by which ram ...


9
John P Patrick, Robert B Goodman: Fluid temperature control system. United Technologies Corporation, John Swiatocha, March 9, 1982: US04318509 (5 worldwide citation)

Fluid temperature control system for providing a supply fluid at a select temperature by warming or cooling a first fluid with a controlled flow of a second fluid. The control of the second fluid flow is achieved by a modulation valve adjustable in response to the pressure of a supply of servo fluid ...


10
Kermit I Harner, John P Patrick: Integral rocket-ramjet open loop fuel control system. United Technologies Corporation, John D Del Ponti, John Swiatocha, April 28, 1981: US04263781 (4 worldwide citation)

In an integral rocket-ramjet having a combustor which initially serves as a rocket combustion chamber for booster propellant, and after the booster propellant is expended, serves as a ramjet combustor where fuel and air are burned, a fuel control system is described for the ramjet stage by which ram ...



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