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US 4,112,311 AGranted
Windmill plant for generating energy
AssigneeStichting Energieonderzoek Centrum Nederland
InventorFrederik H. Theyse
Life of this patent
Estimating the term…
Abstract
Windmill or solar plant for generating electric energy having a transmission in the form of an epicyclic gear transmission with sun wheel and planet wheels, the sun wheel of which is connected to the generator shaft, and the planet wheels being coupled with a regulator motor having two directions of rotation as well as a variable speed of rotation, the ring gear being driven directly or indirectly by the windmill or driving shaft.
Claims10
A Wind-driven power generating system comprising:
- a wind-driven impeller having blades;
- a variable ratio transmission having a main rotary output, a main rotary input and a rotary connection capable of operating either as an input or an output, the rotation of the main output being a function of the rotations of the main input and the rotary connection;
- means drivingly connecting the impeller to the main transmission input;
- a main energy convertor drivingly connected to the main transmission output for converting rotation of the latter to another form of energy;
- means for selectively increasing the decreasing the rotational speed of said main transmission output, said means including a reversible variable speed auxiliary energy-convertor operatively connected to said main convertor and to the rotary connection of the transmission, said auxiliary convertor being operable in a first mode to withdraw energy from the power flow through said main convertor and converting the withdrawn energy to rotation of said rotary connection in an input direction and in a second mode to withdraw energy from said rotary connection when rotating in an output direction and add the withdrawn energy to the power flow through said main convertor;
- and control means responsive to at least one variable of the system for controlling said auxiliary convertor to operate in a selective one of said modes.
3 more elements
A wind-driven power generating system comprising:
- a wind-driven impeller having blades;
- a variable ratio transmission having a main rotary output, a main rotary input and a rotary connection capable of operating either in an input direction or in an output direction, the rotation of the main output being a function of the rotations of the main input and the rotary connection means drivingly connecting the impeller to the main transmission input;
- a main energy convertor drivingly connected to the main transmission output for converting rotation of the latter to another form of energy;
- means for selectively increasing and decreasing the rotational speed of said main transmission output, said means including a reversible variable speed auxiliary energy-convertor operatively connected to said main convertor and to the rotary connection of the transmission, said auxiliary convertor being operable in a first mode to withdraw energy from the power flow through said main convertor and converting the withdrawn energy to rotation of said rotary connection in an input direction and in a second mode to withdraw energy from said rotary connection when rotating in an output direction and add the withdrawn energy to the power flow through said main convertor;
- and control means comparing a number of operational variables of the system with a setpoint value thereof and responsive to the difference between these variables and the setpoint values to modify the transmission ratio of said transmission so that the rotational speed of the impeller stays adapted to the momentary wind velocity.
2 more elements
Dependencies are inferred from the claim text.