Wind turbine regenerative drive system
Cochrane, Richard C.
The patent relates to improvements in wind turbines and in particular to a system for optimising the energy converted from a wind turbine situated in a gusty environment. A wind turbine system comprises a wind turbine 1, a regenerative drive system 2, a wind-speed sensor 4 for measuring local wind speed, and a controller 3. The wind turbine 1 comprising a motor-generator system 6 which is operatively connected to the regenerative-drive system 2, the motor-generator system 6 being drivable as a motor by the regenerative drive system 2 to increase a rotational speed of the wind turbine 1, and being operable as a generator by the regenerative drive system 2 to decrease a rotational speed of the wind turbine 1. The controller 3 is operatively connected to the wind-speed sensor 4 and the regenerative drive system 2, and is operable to control operation of the regenerative-drive system 2 to thereby control the rotational speed of the wind turbine 1 in response to signals received from the wind sensor 4 indicative of gusting changes in the local wind speed.
Published as: GB2448138 (B); US2010133829 (A1); JP2010523880 (A); WO2008119994 (A2); WO2008119994 (A3); EP2132438 (A2); CA2681784 (A1); CA2681784 (C); AU2008234673 (A1)