Described is an oscillating device for generating electricity from a fluid flow, comprising at least one oscillating part, at least one support, fixed to a reference surface and connected to the oscillating part at an oscillation axis, at least one counter-balancing system connected to, and/or acting on the oscillating part, at least one adjustable profile configured to be at least partially immersed in the fluid flow and movably connected to the oscillating part. The oscillating device comprises an adjustment system configured to change the position of the adjustable profile with respect to the fluid flow between at least one position of greatest resistance and at least one position of least resistance. The invention also relates to an adjustment method for oscillating devices designed to generate electricity, according to which adjustments to the position of the adjustable profile are made as a function of certain parameters, such as the speed and/or the change in direction of the oscillation of the oscillating part, detected by a series of sensors.

Described is an oscillating device for generating electricity from a fluid flow, comprising at least one oscillating part, at least one support, fixed to a reference surface and connected to the oscillating part at an oscillation axis, at least one counter-balancing system connected to, and/or acting on the oscillating part, at least one adjustable profile configured to be at least partially immersed in the fluid flow and movably connected to the oscillating part. The oscillating device comprises an adjustment system configured to change the position of the adjustable profile with respect to the fluid flow between at least one position of greatest resistance and at least one position of least resistance. The invention also relates to an adjustment method for oscillating devices designed to generate electricity, according to which adjustments to the position of the adjustable profile are made as a function of certain parameters, such as the speed and/or the change in direction of the oscillation of the oscillating part, detected by a series of sensors.

Various examples are provided related to kite energy generation. In one example, a method for kite-based energy generation includes deploying a kite in a flow of fluid; controlling movement of the kite along a continuous pattern across the flow, where the kite applies tension greater than a threshold during at least a first portion of the pattern and applies tension less than the threshold during at least a second portion of the pattern; and generating power during the first portion of the continuous pattern. In another example, a system includes a kite including control surfaces that control movement of the kite along a continuous pattern across the flow of fluid; a winch connected to the kite by a tether, and a generator of the winch that can generate power during a portion of the pattern; and a spool controller that can control spooling of the tether during the pattern.

A kite driven watercraft power generating system which includes at least one operative location defined on the watercraft, at least one inoperative location defined on the watercraft, a plurality of kite base stations mounted displaceably about the watercraft and, an orientation subsystem for displacing each of the plurality of kite base stations between the at least one operative, and, the at least one inoperative locations, respectively, wherein each of the plurality of kite base stations is further configured to orientate its respective kite in a wind harvesting and energy generating mode when located in the at least one operative location, and, in a kite retraction mode, when located in the at least one inoperative location.

A kite driven watercraft power generating system which includes at least one operative location defined on the watercraft, at least one inoperative location defined on the watercraft, a plurality of kite base stations mounted displaceably about the watercraft and, an orientation subsystem for displacing each of the plurality of kite base stations between the at least one operative, and, the at least one inoperative locations, respectively, wherein each of the plurality of kite base stations is further configured to orientate its respective kite in a wind harvesting and energy generating mode when located in the at least one operative location, and, in a kite retraction mode, when located in the at least one inoperative location.

A box-type wind power generation device and a power generation device set is provided, the box-type wind power generation device includes a box body, a first energy collecting unit and a first connection member. The box body includes at least one flexible housing member and at least one rigid housing member which enclose at least one sealed cavity. The first energy collecting unit includes a piezoelectric membrane and electrodes deposited on both sides of the piezoelectric membrane, respectively; the first energy collecting unit overlying on an inner wall of the flexible housing member and are located in the sealed cavity. An end of the first connection member is fixed to the flexible housing member so that the first connection member is connected to the box body and at least a part of the first connection member is located outside the sealed cavity.

A transportation vehicle may be equipped with electrical energy harvesting systems to harvest electrical energy for use. By way of example, in the transportation vehicle, a Venturi system may be used to receive an air flow and the speed of the air flow increase in a constricted area of the Venturi system, the air flow containing a large amount of kinetic energy. A plurality of electrical energy harvesting systems is disposed in the Venturi system and is configured to convert the kinetic energy contained in the accelerated air flow into electrical energy that can be used to power on-board electronics as well as one or more on-board batteries in the transportation vehicle, as the transportation vehicle is in motion.

A Pulsed Locomotor (120), for propelling media, fluids and crafts, in fluids and on land, comprising a blade (124) securely connected to a drive shaft (122). Upon reciprocation, the ambient medium is forced towards the trailing edge of the blade (124) thereby causing a reactive locomotion of the apparatus, substantially along the plane of the blade. Apparatus is secured to motor M by fastening through aperture (130). The apparatus can be operated directly by motor M, and indirectly by the reaction momentum imparted to a supporting platform P. Thrust is directed by steering handle (128) about a bearing (126), rotatably coupling to platform P and base C. Lubricant L is supplied to outlets (134) via conduit (136) and inlet (132), to coat the apparatus with a lubricant cavity, for drag reduction. The blade (124) planes along a figure 8 reciprocation path s1e1s2e2s1. Crafts are embodied.

A power kite and a bridle system is adapted to connect the power kite to a control box. The power kite includes a leading edge and a trailing edge, and the bridle system includes multiple power lines and at least two steering lines. The steering lines are connected to zones including wingtips of the power kite such that a steering angle of the power kite is controllable by balancing the steering lines. The multiple power lines comprise a front line connected to a front zone of the power kite including a central part of the leading edge and comprise a back line connected to a back zone of the power kite including a central part of the trailing edge, such that an angle of attack of the power kite is controllable by balancing the front and back lines.

A power kite and a bridle system is adapted to connect the power kite to a control box. The power kite includes a leading edge and a trailing edge, and the bridle system includes multiple power lines and at least two steering lines. The steering lines are connected to zones including wingtips of the power kite such that a steering angle of the power kite is controllable by balancing the steering lines. The multiple power lines comprise a front line connected to a front zone of the power kite including a central part of the leading edge and comprise a back line connected to a back zone of the power kite including a central part of the trailing edge, such that an angle of attack of the power kite is controllable by balancing the front and back lines.