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 (90 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
Glidden S Doman, Joseph M Kos, Kermit I Harner, Eugene D DiValentin, Henry S Healy: Variable speed wind turbine. United Technologies Corporation, Francis J Maguire Jr, September 22, 1987: US04695736 (75 worldwide citation)

A variable speed wind turbine includes a frequency converter which converts variable frequency AC from a turbine driven AC generator to fixed frequency AC for delivery to a power grid. The frequency converter is typically an electronic cycloconverter or rectifier-inverter and is also used to control ...


4
Joseph M Kos, Allen F Rapp: Speed avoidance logic for a variable speed wind turbine. United Technologies Corporation, Francis J Maguire Jr, October 13, 1987: US04700081 (72 worldwide citation)

A variable speed wind turbine is controlled in a way which avoids the turbine lingering at a critical speed which would otherwise tend to cause excessive vibration. The disclosed method and apparatus increases speed at a selected rate with respect to generator output power except in the vicinity of ...


5
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 (64 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 ...


6
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 ...


7
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 ...


8
Eugene R Bruun, Joseph M Kos: Control of aircraft bleed air stage mixing. United Technologies Corporation, Patrick J O Shea, November 10, 1992: US05161364 (8 worldwide citation)

A gas turbine engine bleed air system in which air flow from a high pressure and a low pressure compressor stage of a gas turbine engine are mixed together by controlling the pressure at the outlet of a proportional valve. The pressure is controlled by modulating the flow area of the proportional va ...


9
Frank R Niessen, Joseph M Kos: Automatic reset circuit for integral control. RIchard H Kosakowski, December 10, 1991: US05072357 (4 worldwide citation)

An automatic control system includes a multiplier for multiplying the error signal fed to an integrator in accordance with the state of the integrator. The multiplier multiplies the error signal by a unity gain factor over the normal range of integral control; whereas, the multiplier multiplies the ...



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