Wind turbine with hydraulic transmission

Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...

Reexamination Certificate

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C060S398000

Reexamination Certificate

active

07418820

ABSTRACT:
A wind turbine includes a closed loop hydrostatic transmission. The rotor is directly coupled to a low-speed high torque hydraulic motor, which is pressure-reversible to act as a pump. A variable displacement, pressure compensated hydrostatic transmission receives the hydraulic fluid output and drives a generator. The hydrostatic transmission and the generator may be compactly located in the nacelle of wind turbine tower.

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