A wind turbine, which includes a base, a tower, the tower having a cavity therein, which houses a rechargeable battery, and one or more blades, which produce a source of electricity, which is stored in the rechargeable battery housed in the tower of the wind turbine.

A solar power generation device, provided with a power multiplication unit (2). A solar power generator (3) is connected to and located outside of the power multiplication unit (2). The power multiplication unit (2) is provided with a parallel-shaft speed increasing device (21) having a drive shaft (22) on one side and a torsion shaft (23) on the other. The drive shaft (22) is rotatably connected to a motor (24), and the torsion shaft (23) is rotatably connected to a planetary gear torque amplifier (4). The planetary gear torque amplifier (4) is provided with an internal ring gear (41). An inner side of the internal ring gear (41) is connected to a planetary gear set (42) in a circular manner, and a power generator guide shaft (43) is fixedly connected to a side of the planetary gear set (42). The power generator guide shaft (43) is rotatably connected to a power multiplication generator (5), and is provided with planetary gears (422) at one side thereof that mesh with the internal ring gear (41) at an inner side thereof. The torsion shaft (23) is located between the planetary gears (422) and meshes with the same. In this way, the invention solves the problems of high assembly cost, short duration of effective power generation output, and an efficiency decrease caused by consumption after power is generated by a solar panel, thereby extending the effective power generation time.

In general terms the present invention proposes a device 100 for harvesting renewable energy. The device 100 comprises a wind turbine 140, a channel 160 for directing wind 198 to the wind turbine 140, and a solar receiver 155 positioned on an internal of the channel 160 for receiving sunlight 194 entering the channel 160.

A column with at least one photovoltaic element for converting radiation energy is disclosed. The at least one photovoltaic element converts radiation energy of light, such as sunlight, into electrical energy. The at least one photovoltaic element is arranged on the column, and at least one photovoltaic element is a flexible photovoltaic element.

A hybrid power system (100) comprising a wind turbine (102) having a wind turbine generator and a power converter, and one or more DC power sources (104). The hybrid power system is configured to prioritize active power output over reactive power capability when the wind turbine is not operating, and is further configured to prioritize reactive power capability over active power output when the wind turbine is operating and wind speed is above a predetermined threshold. Methods for operating a hybrid power system are also provided.

The technology relates to techniques for redundant power distribution and monitoring for lighter than air (LTA) vehicles. A power distribution and monitoring system for an LTA vehicle, can include two or more redundant controllers coupled to a multiplexer in a crossbar architecture. Each controller can control the multiplexer and inhibit the other controller in the case of a failure of the other controller. Each controller can control a power switch to direct power from a power source to an electronic component, and can monitor the power source. In some cases, a first controller receives a signal indicting a failure in a second controller, and the first controller inhibits the second controller and directs power from the power source to the electronic component.

The utility model relates to alternative energy. The present wind turbine includes a symmetrical housing, which tapers from a lower part to an upper part and has a hemispherical fairing mounted thereabove, and lateral ribs which are vertically fastened on the housing and on which is fastened an annular fairing with a convex outer surface, a multi-bladed wind impeller being rigidly fastened inside of said annular fairing on a vertical electric generator shaft, wherein the hemispherical fairing has an aerodynamic annular baffle fastened in the lower part thereof, and the hemispherical fairing is configured to have a diameter greater than the diameter of the annular fairing with a convex outer surface. The utility model is aimed at increasing the speed of an air stream passing through the plane of rotation of a wind impeller while simultaneously preventing meteorological precipitation and foreign objects from entering the plane of rotation of the wind impeller.

A concentrator apparatus is disclosed. The concentrator apparatus includes a light receiver and a light concentrator. The light concentrator is arranged for the omnidirectional concentration of light toward a first focal point on the light receiver and a second focal point on the light receiver. For example, the light concentrator can include a first concentrating lens with a first focal point on the light receiver. The light concentrator can include a second concentrating lens with a second focal point on the light receive. The first and second concentrating lenses can be circumferentially spaced about the light receiver.

The invention relates to a hybrid power plant with a plurality of energy assets comprising several renewable power generating units, preferably in turn comprising wind turbines and/or solar power units, and an energy storage unit, such as battery energy system. A power plant controller receives information indicative of a power limitation from the energy storage unit, and dynamically modify the active power set points by corresponding weighting factors according to the capabilities of the respective energy assets in response to this power limitation so as to produce active power from the hybrid power plant. The invention may compensate for this power limitation by modifying correspondingly the active power set points of the hybrid power plant according to the capability of the energy assets so as to maintain a desired power production, and maintain a sufficiently smooth ramp rate when changing a parameter related to the power production.

A method for operating a PV system that is integrated into a power system connected to a power grid includes determining a voltage operating point for the PV system based on a maximum power point tracking (MPPT) algorithm. If an available power output of the PV system can be provided to the power grid, the method includes operating the PV system based on the voltage operating point. If the maximum available power output of the PV system cannot be provided to the power grid, the method includes applying a voltage step to the voltage operating point to drive a power output of the PV system towards an external power constraint.