The present invention generally is a system and method for ground, atmospheric and space based solar powered electrical energy generation and transmission of beamed microwave power. Specifically it is a system and method for generating electrical energy from a plurality of photovoltaic cells dispersed on a flexible surface each in close proximity to and functionally connected to microwave generating and transmitting means for controllably forming one or more stronger microwave beams by combining a plurality of much weaker individual microwave beams. The invention can be a microwave beam weapon for detecting and transferring microwave energy to non-cooperative targets or it clear orbital debris by momentum transfer to space object through microwave radiation pressure. Most practically it can provide electric power and microwave beam weapon defense to remote military and civilian facilities, including forward operating bases.

This application discloses a method, an apparatus, and a system for obtaining electronic layout applied to photovoltaic array in the field of equipment installation management. According to the method, the electronic device identifies each first area in a target picture to obtain position information and a module identifier of at least one photovoltaic module in each first area, and may directly obtain an electronic layout based on the position information and the module identifier of each photovoltaic module. In this way, a product identifier of each converter does not need to be manually obtained, and a photovoltaic module does not need to be manually added to the electronic layout. This reduces labor time consumption and improves efficiency of obtaining the electronic layout.

The invention discloses an islanding detection method in DC microgrids based on MPPT trapezoidal voltage disturbance. The steps are as follows: start the MPPT strategy; set the starting signal threshold of disturbance; measure the output current of PVA at the maximum power; calculate the same environmental factor of PVA with different capacities under the same light intensity and temperature in real time; when the environmental factor is greater than the starting signal threshold of the disturbance, periodic trapezoidal disturbance is carried out to the PVA port voltage reference; if the PCC voltage Upcc exceeds the threshold set by the passive method, it is judged as islanding; otherwise, it is judged whether the change rule of Upcc is consistent with the change rule of the calculated PCC voltage Upccp under the trapezoidal disturbance; If it is consistent, it is judged as islanding; otherwise, it is pseudo islanding.

The invention discloses an islanding detection method in DC microgrids based on MPPT trapezoidal voltage disturbance. The steps are as follows: start the MPPT strategy; set the starting signal threshold of disturbance; measure the output current of PVA at the maximum power; calculate the same environmental factor of PVA with different capacities under the same light intensity and temperature in real time; when the environmental factor is greater than the starting signal threshold of the disturbance, periodic trapezoidal disturbance is carried out to the PVA port voltage reference; if the PCC voltage Upcc exceeds the threshold set by the passive method, it is judged as islanding; otherwise, it is judged whether the change rule of Upcc is consistent with the change rule of the calculated PCC voltage Upccp under the trapezoidal disturbance; If it is consistent, it is judged as islanding; otherwise, it is pseudo islanding.

The present invention provides a solar photovoltaic installation capable of storing power while supplying power during daytime when solar radiation conditions are excellent. The solar photovoltaic installation of the invention includes at least a first solar module string 11 and a second solar module string 12 as solar module strings 10, the solar photovoltaic installation further includes at least a first storage battery array 21 and a second storage battery array 22 as storage battery arrays 20, and while power storage capacity detection means 60 detects that the second storage battery array 22 is less than a predetermined capacity and voltage detection means 50 detects voltage of more than predetermined voltage, the control means 40 connects the first solar module string 11 to a power conditioner 30, and connects the second solar module string 12 to the second storage battery array 22.

The present invention provides a solar photovoltaic installation capable of storing power while supplying power during daytime when solar radiation conditions are excellent. The solar photovoltaic installation of the invention includes at least a first solar module string 11 and a second solar module string 12 as solar module strings 10, the solar photovoltaic installation further includes at least a first storage battery array 21 and a second storage battery array 22 as storage battery arrays 20, and while power storage capacity detection means 60 detects that the second storage battery array 22 is less than a predetermined capacity and voltage detection means 50 detects voltage of more than predetermined voltage, the control means 40 connects the first solar module string 11 to a power conditioner 30, and connects the second solar module string 12 to the second storage battery array 22.

A robotic PV module installation system for populating a solar generation plant with PV modules with minimal human intervention. The PV module installation system can include an aerial work platform (AWP), a linear slide, and a robotic arm. The AWP can include an articulated boom. The AWP can also be configured for movement over off-road terrain. The linear slide can be coupled to a free-end of the articulated boom. The robotic arm can be coupled to a slide of the linear slide to increase a horizontal reach of the robotic arm through movement of the slide along the linear slide. The robotic arm can also include an end of arm tooling configured to pick up PV modules.

A photovoltaic system having at least one solar cell and a secondary direct current power supply connected to the at least one solar cell. The secondary power supply is configured for constant voltage operation to input power to the photovoltaic cell to maintain operation of the solar cell at or near an optimum voltage working level for the solar cell.

A photovoltaic system includes a plurality of photovoltaic racks, a plurality of photovoltaic strings connected to each photovoltaic rack in the plurality of photovoltaic racks, a detector, and a controller. Each photovoltaic rack is configured to rotate by an angle through the controller. Each photovoltaic string is configured to convert light energy into electric energy. The detector is separately connected to the controller and the plurality of photovoltaic strings, and is configured to detect blocking parameters of the plurality of photovoltaic strings. The controller is connected to the plurality of photovoltaic racks, and is configured to: control, based on illumination angles, the plurality of photovoltaic racks to rotate by an angle, obtain a photovoltaic rack blocking relationship based on the blocking parameters of the plurality of photovoltaic strings, and adjust a rotation angle of a first photovoltaic rack or a second photovoltaic rack based on the photovoltaic rack blocking relationship.

The present invention is realized by apparatus and methods for harvesting, storing, and generating energy by permanently placing a large rigid buoyant platform high in the earth's atmosphere, above clouds, moisture, dust, and wind. Long, strong and light tethers can connect the buoyant structure to the ground which can hold it in position against wind forces. Weights suspended from the buoyant platform with cables are raised and lowered by electric winches to store and release gravitational potential energy. High voltage transmission lines electrically connect the platform to the earth's surface. Electrical energy from the high voltage transmission lines or from photovoltaic arrays on the platform can be stored as gravitational potential energy and subsequently released as electricity from generators driven from the stored gravitational potential energy and used on the platform or transmitted via the high voltage transmission lines.