| 摘要 |
A system for generating energy (100) from a fluid flow (105) is proposed. The system includes energy conversion means (110), aerostatic means (130a, 130b) - switchable between an active condition for being carried away from the energy conversion means by the fluid flow, and a passive condition in which said carrying away is minimized - and connection means (120, 125a, 125b, 125c, 125d) for connecting the aerostatic means with the energy conversion means. The energy conversion means converts part of a kinetic energy, supplied to the aerostatic means by the fluid flow, into said energy when the aerostatic means in the active condition is carried away from the energy conversion means. The system also includes return means (110) for returning the aerostatic means in the passive condition towards the energy conversion means, and switching means (200) for switching the aerostatic means from the passive condition to the active condition and from the active condition to the passive condition in response to the reaching a first distance (Ls) and a second distance (Lf), respectively, of the aerostatic means from the energy conversion means - the second distance being greater than the first distance. In the solution according to an embodiment of the present the invention the aerostatic means includes at least one pair of aerostatic modules (130a, 130b). Furthermore, the switching means includes coupling means (145, 215) for coupling the aerostatic modules of each pair for forming a first resistance surface (150) for the fluid flow in the active condition and for decoupling the aerostatic modules of each pair for forming a second resistance surface for the fluid flow smaller than the first surface in the passive condition.
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