Wind energy system with fluid-working machine with...

Details Wind energy system with fluid-working machine with... Wind energy system with fluid-working machine with...

2008-08-13

2011-12-13

Lazo, Thomas E (Department: 3745)

Power plants

Pressure fluid source and motor

Utilizing natural energy or having a geographic feature

C092S072000

Reexamination Certificate

active

08074450

ABSTRACT:
The invention relates to a wind energy system with hydraulic energy transmission with non-symmetric actuation. The non-symmetric actuation is caused by valve control and mechanical means for controlling the actuation of the pistons. A cylinder unit is provided comprising a drive unit and an output unit associated with two hydraulic connections. The drive and the output unit comprise a minimum of two cylinders, in which pistons are reciprocating. Some of the cylinders can be switched off during low wind speeds. The cylinders communicate with a low pressure manifold and a high pressure manifold. These manifolds are part of the hydraulic connections. Use of the fluid-working machine as transmission in wind energy systems increases the overall economical efficiency.

REFERENCES:
patent: 4503673 (1985-03-01), Schachle et al.
patent: 4598628 (1986-07-01), Courtright
patent: 5259738 (1993-11-01), Salter et al.
patent: 0494236 (1995-12-01), None
patent: 1537333 (2006-06-01), None
patent: 2005248738 (2005-09-01), None
patent: WO2004/025122 (2004-03-01), None
patent: WO2006/090174 (2006-08-01), None
patent: WO2006/109079 (2006-10-01), None
patent: WO 2007053036 (2007-05-01), None

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