Abstract: An intake assembly for a wind-energy conversion system has a substantially vertical converging nozzle, an object extending into the nozzle, and a converging flow passage between the object and the nozzle. For some embodiments, the object may be another nozzle. There may be vanes in one or both nozzles in further embodiments. The object may be configured to move in yet other embodiments.

Abstract: An embodiment of a building may include a wind-energy-conversion system with a duct that may be a substantially vertical converging nozzle. An energy extractor may be fluidly coupled to the duct. For some embodiments, a space within the building may be part of the wind-energy-conversion system and may be fluidly coupled to the energy extractor by the duct.

Abstract: An intake assembly for a wind-energy conversion system has a substantially vertical converging nozzle, an object extending into the nozzle, and a converging flow passage between the object and the nozzle. For some embodiments, the object may be another nozzle. There may be vanes in one or both nozzles in further embodiments. The object may be configured to move in yet other embodiments.

Abstract: A wind-energy conversion system includes a wind-delivery system configured to accelerate wind, an energy extractor configured to output energy in response to receiving the accelerated wind from the wind-delivery system, and an air cleaner configured to clean the wind, e.g., so that cleaned wind exits the wind-energy conversion system.

Abstract: A kinetic hydropower generation system has a turbine and a generator coupled to the turbine. An underwater intake nozzle assembly is fluidly coupled to the turbine. For one embodiment, an underwater tower nozzle may be fluidly coupled between the turbine and the underwater intake nozzle assembly. The underwater intake nozzle assembly may include a collector and a converging nozzle.

Abstract: An embodiment of a fluid power generation system has a generator comprising an electrical-charge-producing material and a pair of end boundary constraints. One of the end boundary constraints of the pair of end boundary constraints is physically coupled to the electrical-charge-producing material adjacent to an end of the electrical-charge-producing material and the other one of the pair of end boundary constraints is physically coupled to the electrical charge-producing material adjacent to an opposite end of the electrical-charge-producing material. For some embodiments, the end boundary constraints may be active or passive. For other embodiments, at least one of the end boundary constraints may be electrically coupled to a controller for adjusting vibration characteristics of the generator.