This application provides a connection mechanical part of a photovoltaic module. The connection mechanical part includes: a first connection assembly and a second connection assembly, wherein the first connection assembly and the second connection assembly each include a connection part, a mounting part and a hinge mounting part between the connection part and the mounting part; the first connection assembly and the second connection assembly are hinge-connected to each other by using their respective hinge mounting parts; the connection part of the first connection assembly is disposed opposite to the connection part of the second connection assembly; and a tensioning device is further disposed between the first connection assembly and the second connection assembly, where the connection parts of the first connection assembly and the second connection assembly are attached or detached by adjusting the tensioning device, to connect the connection mechanical part to the photovoltaic module.

This application provides a connection mechanical part of a photovoltaic module. The connection mechanical part includes: a first connection assembly and a second connection assembly, wherein the first connection assembly and the second connection assembly each include a connection part, a mounting part and a hinge mounting part between the connection part and the mounting part; the first connection assembly and the second connection assembly are hinge-connected to each other by using their respective hinge mounting parts; the connection part of the first connection assembly is disposed opposite to the connection part of the second connection assembly; and a tensioning device is further disposed between the first connection assembly and the second connection assembly, where the connection parts of the first connection assembly and the second connection assembly are attached or detached by adjusting the tensioning device, to connect the connection mechanical part to the photovoltaic module.

The present disclosure relates to a DC generator that has at least one string, wherein the at least one string is formed by modules which are series-connected by a string line so as to generate a string voltage; and a switching device which is connected in series in the string line, in order to switch on and off the at least one string using the switching device. The switching device comprises a hybrid switch including a relay and a semiconductor switching device connected in parallel to the relay, wherein the semiconductor switching device includes at least one semiconductor switch. The switching device comprises a current sensor which is adapted to measure a negative current flow.

The present disclosure relates to a DC generator that has at least one string, wherein the at least one string is formed by modules which are series-connected by a string line so as to generate a string voltage; and a switching device which is connected in series in the string line, in order to switch on and off the at least one string using the switching device. The switching device comprises a hybrid switch including a relay and a semiconductor switching device connected in parallel to the relay, wherein the semiconductor switching device includes at least one semiconductor switch. The switching device comprises a current sensor which is adapted to measure a negative current flow.

A bypass circuit of an embodiment includes a switch that shorts-circuit between a first power conversion apparatus and a power storage apparatus. The switch is connected in parallel to a second power conversion apparatus. The first power conversion apparatus converts power generated from natural energy and outputs the converted power to a power distribution grid. The second power conversion apparatus converts surplus power that has not been converted by the first power conversion apparatus and charges the power storage apparatus with the converted power; or converts power discharged from the power storage apparatus and supplies the converted power to the first power conversion apparatus.

A method for rectifying degradation of a photovoltaic module in a photovoltaic power system, includes: controlling a to-be-rectified photovoltaic module in a photovoltaic power system to stop outputting; and then injecting a rectification current into a positive or negative electrode of the to-be-rectified photovoltaic module.

A solar tracker system includes a torque tube, a solar panel assembly attached to the torque tube, a housing defining a chamber and a fluid passageway extending from the chamber, and an active lock connected to a seal configured to prevent a flow path of fluid while in a sealed state and allow the flow path of fluid in an unsealed state. The system further includes a controller in communication with the torque tube and the active lock. The controller is programmed to receive a command to place the solar panel assembly in a stowed position, instruct the torque tube to rotate the panel assembly to a stowed angle corresponding to the stowed position, monitor a current angle of the panel assembly, compare the current angle to the stowed angle, and instruct the seal to transition to the sealed state when the current angle is equal to the stowed angle.

A solar tracker system includes a torque tube, a solar panel assembly attached to the torque tube, a housing defining a chamber and a fluid passageway extending from the chamber, and an active lock connected to a seal configured to prevent a flow path of fluid while in a sealed state and allow the flow path of fluid in an unsealed state. The system further includes a controller in communication with the torque tube and the active lock. The controller is programmed to receive a command to place the solar panel assembly in a stowed position, instruct the torque tube to rotate the panel assembly to a stowed angle corresponding to the stowed position, monitor a current angle of the panel assembly, compare the current angle to the stowed angle, and instruct the seal to transition to the sealed state when the current angle is equal to the stowed angle.

Disclosed is a power wiring device which comprises: at least one elongated wiring member which includes a plurality of first connectors and allows the first connectors to be mutually electrically conducted; and a plurality of circuit modules each including a second connector which is mechanically and electrically attachable to and detachable from any of the first connectors, wherein the plurality of circuit modules include: at least one energy harvesting module as a circuit module capable of outputting power generated by energy harvesting from the second connector; and at least one load module as a circuit module capable of consuming power input from the second connector.

A photovoltaic array of photovoltaic solar cells; a smart dynamic programmable circuit breaker for electrically providing a pulsed 100 microseconds duration short circuit to the photovoltaic array electrical outputs, wherein a response time for the smart dynamic programmable circuit breaker is more than 1 millisecond when responding to a short circuit; a computer program comprising instructions that when executed by the processor perform functions that control the smart dynamic programmable circuit breaker, the computer program comprising: instructions to command the smart dynamic programmable circuit breaker to initiate the 100 microsecond pulsed short circuit; instructions to measure a current magnitude and current rise time of the smart photovoltaic system outputs during the 100 microsecond pulsed short circuit; and instructions to select a behavior curve from a plurality of smart dynamic programmable circuit breaker behavior curves 10% above the current magnitude and current rise time during the pulsed short circuit.