Windflow Technology Limited

Matthew James Silvester

Peter John Scott

Geoffrey Morgan Henderson

Richard James Trudgian

A hydraulic control system HCS for controlling a variable ratio transmission of a power generating system. A hydraulic motor/pump unitis operably connected to a superposition gear, and is connected to a hydraulic circuit that comprises an orificeand/or a relief valvethat opens at a predetermined hydraulic pressure. The hydraulic circuit switches between a variable low-speed operating mode and a torque limiting high-speed operating mode. In the torque limiting high-speed operating mode the hydraulic motor/pump unitis driven by the superposition gear and drives hydraulic fluid through the orificeand/or relief valveto provide a passive torque limiting function. In the variable low-speed operating mode the hydraulic motor/pump unitdrives the superposition gear and the hydraulic control system provides a desired rotorspeed by controlling hydraulic fluid flow rate through the hydraulic motor/pump unit

Growing community of inventors

Christchurch, New Zealand

Matthew James Silvester