Back to results
US 12,603,607 B2Granted
Shutdown device control method, system and apparatus, and shutdown controller
AssigneeAltenergy Power System Inc.
InventorsDongming Zhou, Yuhao Luo
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAltenergy Power System Inc.
InventorsDongming Zhou, Yuhao Luo
Estimating the term…
A shutdown device control method, system and apparatus, and a shutdown controller. If the shutdown controller detects that an input voltage of the shutdown controller is reduced, when the input voltage of the shutdown controller is reduced to a preset protection voltage but has not been reduced to an undervoltage protection threshold voltage, the shutdown controller controls the shutdown of a shutdown device connected to a power supply photovoltaic assembly that supplies power to the shutdown controller, so that a bypass diode connected to the power supply photovoltaic assembly bypasses the power supply photovoltaic assembly, so that the power supply photovoltaic assembly only supplies power to the shutdown controller. After the shutdown device connected to the power supply photovoltaic assembly is shut down, the power supply photovoltaic assembly cannot output any voltage to a photovoltaic inverter apparatus, but voltages outputted by the power supply photovoltaic assembly are all supplied to the shutdown controller to ensure the normal operation of the shutdown controller, thereby ensuring that photovoltaic assemblies, other than the power supply photovoltaic assembly, among photovoltaic assemblies corresponding to the shutdown controller still output voltages to the photovoltaic inverter apparatus, and avoiding large fluctuations in the voltage of the photovoltaic inverter apparatus.
A method for controlling shutdown devices, wherein the method is applied to shutdown controllers, each of the shutdown controllers controls a plurality of the shutdown devices that are arranged at positive output terminals of photovoltaic modules in one-to-one correspondence, the photovoltaic modules corresponding to a same one of the shutdown controllers are connected in series via the shutdown devices connected to the photovoltaic modules to form a photovoltaic module string, a positive output terminal of the photovoltaic module string is connected to a positive input terminal of a photovoltaic inverter device, a negative output terminal of the photovoltaic module string is connected to a negative input terminal of the photovoltaic inverter device, a bypass diode is connected in parallel between a positive output terminal and a negative output terminal of each of the photovoltaic modules, and the method comprises:
A system for controlling shutdown devices, wherein the system is applied to shutdown controllers, each of the shutdown controllers controls a plurality of shutdown devices that are arranged at positive output terminals of photovoltaic modules in one-to-one correspondence, the photovoltaic modules corresponding to a same one of the shutdown controllers are connected in series via shutdown devices connected to the photovoltaic modules to form a photovoltaic module string, a positive output terminal of the photovoltaic module string is connected to a positive input terminal of a photovoltaic inverter device, a negative output terminal of the photovoltaic module string is connected to a negative input terminal of the photovoltaic inverter device, a bypass diode is connected in parallel between a positive output terminal and a negative output terminal of each of the photovoltaic modules, and the system comprises:
Dependencies are inferred from the claim text.