A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the solar foil comprising an outer surface having photovoltaic properties; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially formed of an electrically conductive material and configured to conduct electricity from at least one of the connecting nodes to the other of the connecting nodes.

A kite for a system for extracting energy from the wind, the kite comprising: a body having a wing for providing lift; means for connecting the wing to a tether; and means for controlling the flight of the kite in the wind, wherein the wing is constructed with an asymmetry in a spanwise direction from a first end of the wing to a second end of the wing to provide the wing with a naturally asymmetric shape at least when in flight. The asymmetry may be provided to optimise the shape of the wing for a flight pattern in which one end of the wing has a higher speed than the other end of the wing. For example, the asymmetry may be optimised to allow the kite to follow a flight pattern resembling a circle or spiral, from the point of view of a base unit of the system.

Wind-driven energy converting device (2) is disclosed. The wind-driven energy converting device (2) comprises a main pendulum (20) comprising a pendulum bob (10) attached to a pendulum rod (6). A sail member (4) attached to the pendulum rod (6) in a higher position than the pendulum rod (6). The main pendulum (20) is suspended in a frame (8) by means of a bearing unit (18) allowing the pendulum rod (6) to be rotated about two perpendicular horizontal axes (X, Y) at the same time. The main pendulum (20) is mechanically attached to at least one secondary pendulum (14) by means of a connection structure (16). The secondary pendulum (14) is connected to and being configured to rotate a driving shaft (36) upon being moved due to motion of the main pendulum (20).

A bladeless wind turbine may include a flexible support rod mounted on a support surface, an elongated rigid mast mounted on the flexible support rod, and a natural tuning mechanism coaxially mounted around a first portion of the flexible support rod. A natural tuning mechanism may include a housing coaxially attached to the flexible support rod, at least one extendable tube slidably housed within the housing and coaxially mounted and fitted around the flexible support rod. At least one extendable tube may be slidably moveable along the main axis of the flexible support rod and may be extendable beyond the top end of the housing by a predetermined height. A bladeless wind turbine may further include a control unit that may be coupled to the natural tuning mechanism and may be configured to urge the at least one extendable tube to extend beyond the top end of the housing by a predetermined height, where the predetermined height may be calculated by the control unit based on the wind and the elongated rigid mast.

Traction air device with multiple wing contours for a wind power generation plant and wind power generation plant utilizing the air device.

Wind-driven energy converting device (2) is disclosed. The wind-driven energy converting device (2) comprises a main pendulum (20) comprising a pendulum bob (10) attached to a pendulum rod (6). A sail member (4) attached to the pendulum rod (6) in a higher position than the pendulum rod (6). The main pendulum (20) is suspended in a frame (8) by means of a bearing unit (18) allowing the pendulum rod (6) to be rotated about two perpendicular horizontal axes (X, Y) at the same time. The main pendulum (20) is mechanically attached to at least one secondary pendulum (14) by means of a connection structure (16). The secondary pendulum (14) is connected to and being configured to rotate a driving shaft (36) upon being moved due to motion of the main pendulum (20).

A bladeless wind turbine may include a flexible support rod mounted on a support surface, an elongated rigid mast mounted on the flexible support rod, and a natural tuning mechanism coaxially mounted around a first portion of the flexible support rod. A natural tuning mechanism may include a housing coaxially attached to the flexible support rod, at least one extendable tube slidably housed within the housing and coaxially mounted and fitted around the flexible support rod. At least one extendable tube may be slidably moveable along the main axis of the flexible support rod and may be extendable beyond the top end of the housing by a predetermined height. A bladeless wind turbine may further include a control unit that may be coupled to the natural tuning mechanism and may be configured to urge the at least one extendable tube to extend beyond the top end of the housing by a predetermined height, where the predetermined height may be calculated by the control unit based on the wind and the elongated rigid mast.

A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the solar foil comprising an outer surface having photovoltaic properties; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially formed of an electrically conductive material and configured to conduct electricity from at least one of the connecting nodes to the other of the connecting nodes.

Traction air device with multiple wing contours for a wind power generation plant and wind power generation plant utilizing the air device.

A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the solar foil comprising an outer surface having photovoltaic properties; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially comprised of an electrically conductive material and configured to conduct electricity from at least one of the connecting nodes to the other of the connecting nodes.