Implementations of wind energy devices may include a frame coupled to each of a first rotor wheel, a second rotor wheel, a third rotor wheel, and a fourth rotor wheel. Implementations of wind energy devices may also include a first cable configured to rotate about the first rotor wheel and the second rotor wheel and a second cable configured to rotate about the third rotor wheel and the fourth rotor wheel. Implementations of wind energy devices may also include a plurality of airfoils coupled between the first cable and the second cable. Implementations of wind energy devices may include a first generator and a second generator. Implementations of wind energy devices may include a controller coupled to the first generator and the second generator. The controller may be configured to control a speed of rotation of the plurality of airfoils.

A plenum resident wind turbine sustainable energy generating system is disclosed. An example embodiment includes: a wind turbine assembly installed in a plenum of a heating, ventilating, and air conditioning (HVAC) unit, the wind turbine assembly including a plurality of blades and a transverse shaft; and a generator coupled to the shaft of the wind turbine assembly.

The present disclosure relates to an apparatus (10) for wind power generation comprising at least one primary wind duct (12); at least one secondary wind duct (14); at least one pressure-balancing and guiding unit (14); at least one primary blade unit (20); at least one booster and generator unit (22); at least one secondary blade unit (24); and at least one extractor (26). Characteristically, a counter-rotating motion is created between the primary blade unit (20), the secondary blade unit (24) and the components of the booster and generator unit (22), which causes an increase in the velocity of the wind flowing through the apparatus (10) and a resultant increase in the impact of the high velocity wind on the blades; further amplifying the self-reinforcing effect occurring at each stage of the apparatus (10).

A system for generating electricity using wind power for an electric vehicle (EV). The system converts wind to electricity for charging the EV's primary batteries, or to provide supplemental electricity to other EV systems, such as heating and cooling. The system comprises an air intake that compresses air along a narrowing path to a turbine component. The turbine component comprises a cylinder housing a turbine for capturing the compressed air. As the turbine rotates due to airflow, it engages at least one alternator to generate electricity. The at least one alternator is then connected to the EV's batteries or other vehicle systems for charging or immediate use.

A turbine, in particular for harvesting energy in flowing air or flowing water, is easily adaptable to different application conditions and facilitating a comparably high degree of efficiency. This is achieved in that the basic shape of the turbine is cylindrical and is provided with blades which are parallel to an axis of the turbine. The blades are pivotally arranged in joints on the outer circumference of at least one turbine wheel. The blades are substantially L-shaped. The longer limb of the blade is curved preferably in a manner corresponding to the radius of the turbine casing, and the shorter limb lies within the surface line of the turbine.

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.

The variable tilting blade twin turbine windmill device is for capturing kinetic energy from the wind and is comprised of a shaft having a plurality of central hubs connectively attached, each central hub having a plurality of wind capture arms comprising a rotating wind capture blade having a capture surface and a slicing edge that are rotated by a rotating gear and drive gear combination connectively attached to said wind capture blades enabling a rotation of said wind capture blades wherein the wind capture blades are rotated between a blade-mode to capture the wind and a knife-mode to pass with less drag resistance through the air/wind thereby enabling an increase in the ability to capture more of the energy available in the wind stream.

Air stream-driven power-generating systems for electric vehicles have been described and illustrated.

A wind generator assembly for harnessing wind to charge batteries in electric vehicles and hybrid vehicles includes a housing that is mounted on a roof of a vehicle. The housing has a wind passage extending therethrough and wind passes through the wind passage when the vehicle is driven. A turbine is rotatably positioned in the housing. The turbine is positioned in the wind passage and the turbine is rotated by wind passing through the wind passage. A generator is mounted in the generator space and the generator is in mechanical communication with the turbine. Thus, the turbine rotates the generator when the turbine rotates thereby facilitating the generator to produce electrical current. The generator is electrically coupled to batteries in the vehicle to charge the batteries.

A power generation system includes a flotation assembly configured to float in water and a first harnessing assembly coupled to the flotation assembly and disposed in an airflow above the water. The first harnessing assembly is configured to harness the airflow to create a first rotational energy. The system also includes a second harnessing assembly coupled to the flotation assembly and disposed in the water. The second rotational assembly is configured to harness movement of the water to create a second rotational energy. The flotation assembly also includes a generating module to convert the first and second rotational energies into electrical energy.