Abstract: The present disclosure provides a household photovoltaic system and a smart micro-grid system. The household photovoltaic system includes a photovoltaic assembly module, a household photovoltaic inverter and an AC grid. The household photovoltaic system further includes a monitoring assembly and a wireless communication assembly. The monitoring assembly includes DC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the photovoltaic assembly module, and AC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the household photovoltaic inverter. The wireless communication assembly includes a DC-side wireless communication assembly and an AC-side wireless communication assembly which are configured to transmit the operating parameters monitored by each DC-side monitoring assembly and each AC-side monitoring assembly to a predetermined monitoring terminal.

Abstract: The present disclosure provides a household photovoltaic system and a smart micro-grid system. The household photovoltaic system includes a photovoltaic assembly module, a household photovoltaic inverter and an AC grid. The household photovoltaic system further includes a monitoring assembly and a wireless communication assembly. The monitoring assembly includes DC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the photovoltaic assembly module, and AC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the household photovoltaic inverter. The wireless communication assembly includes a DC-side wireless communication assembly and an AC-side wireless communication assembly which are configured to transmit the operating parameters monitored by each DC-side monitoring assembly and each AC-side monitoring assembly to a predetermined monitoring terminal.

Abstract: Embodiment of the present disclosure provides a waterborne photovoltaic system, comprising a photovoltaic module, a photovoltaic support and a suspension device, wherein the photovoltaic module is secured to the photovoltaic support, the photovoltaic support is secured to the suspension device, the suspension device comprises a plurality of floating members, and each of the floating members comprises a plurality of floats.

Abstract: The present disclosure provides a single-phase PLL controlling method and a single-phase PLL controlling device. The device includes a first FIR filter, a second FIR filter and a Park converter. The first FIR filter and the second FIR filter are configured to perform FIR filtration on a collected power grid voltage signal so as to acquire filtered signals, and output the filtered signals to the Park converter. A filtered signal V? acquired by the first FIR filter and a filtered signal V? acquired by the second FIR filter form a set of virtual two-phase signals in an ?? coordinate system. The Park converter is configured to perform Park conversion on the filtered signal V? and the filtered signal V?, so as to acquire a set of two-phase signals Vd and Vq in a dq coordinate system.

Abstract: The present disclosure provides a single-phase PLL controlling method and a single-phase PLL controlling device. The device includes a first FIR filter, a second FIR filter and a Park converter. The first FIR filter and the second FIR filter are configured to perform FIR filtration on a collected power grid voltage signal so as to acquire filtered signals, and output the filtered signals to the Park converter. A filtered signal V? acquired by the first FIR filter and a filtered signal V? acquired by the second FIR filter form a set of virtual two-phase signals in an ?? coordinate system. The Park converter is configured to perform Park conversion on the filtered signal V? and the filtered signal V?, so as to acquire a set of two-phase signals Vd and Vq in a dq coordinate system.

Abstract: The present disclosure relates to a cleaning system for a photovoltaic power station, including a sprinkler, a dust detector configured to detect a dust content at a surface of a solar assembly and send a signal when the dust content at the surface of the solar assembly meets a first predetermined condition, and a controller configured to control the sprinkler to clean the solar assembly in accordance with the signal from the dust detector.

Abstract: The present disclosure provides an electronic device protective case which is able to, by means of photovoltaic power generation, alleviate the insufficient capacity of a cell for an electronic device when it is used in the open air, and while an accumulator may be used as a power tank. A charging/discharging controller is used to control a photovoltaic cell panel in the protective case to store electric energy after the photovoltaic conversion in an accumulator, with the electric energy in the accumulator used to charge the electronic device. In addition, electrical connection states between an external data line port and the electronic device protective case as well as a port of an electronic device is controlled by means of a switch assembly, and when the switch assembly is in an ON state, the charging/discharging controller is used to control the accumulator or an external data line port to charge the electronic device.

Abstract: The present disclosure provides an electronic device protective case[.] which is able to, by means of photovoltaic power generation, alleviate the insufficient capacity of a cell for an electronic device when it is used in the open air, and while an accumulator may be used as a power tank. A charging/discharging controller is used to control a photovoltaic cell panel in the protective case to store electric energy after the photovoltaic conversion in an accumulator, with the electric energy in the accumulator used to charge the electronic device. In addition, electrical connection states between an external data line port and the electronic device protective case as well as a port of an electronic device is controlled by means of a switch assembly, and when the switch assembly is in an ON state, the charging/discharging controller is used to control the accumulator or an external data line port to charge the electronic device.