Power conditioning, distribution and management

摘要

A power conditioning, distribution and management system includes a switch circuit that enables coupling of an AC power supply to a load though an overcurrent device. A control circuit switches the switch circuit from a non-conductive state to a conductive state when a supply voltage signal is between first overvoltage and undervoltage thresholds. The control circuit records an overvoltage event and maintains the switch circuit in the conductive state when the supply voltage signal exceeds a second, higher overvoltage threshold and switches the switch circuit to a nonconductive state when the supply voltage signal exceeds a third, highest overvoltage threshold. The control circuit records an undervoltage event and maintains the switch circuit in the conductive state when the supply voltage signal falls below a second, lower under-voltage threshold and switches the switch circuit to the non-conductive state when the supply voltage signal falls below a third, lowest undervoltage threshold.

主权项

1. A power distribution apparatus comprising:
a switch circuit to selectively couple input circuitry connectable to an AC power supply to output circuitry connectable to a load through an overcurrent protection device, the switch circuit being controllable into a conductive state, where an input conductor coupling the input circuitry to the switch circuit is electrically connected through the switch circuit to an output conductor coupling the output circuitry to the switch circuit, and controllable into a non-conductive state, where the input conductor is electrically disconnected from the output conductor by the switch circuit; a supply signal sampling circuit configured to generate a supply voltage sample signal representative of a voltage of the AC power supply; and a control circuit configured to monitor the supply voltage sample signal and to:
compel the switch circuit into the conductive state in response to the supply voltage signal being below a first overvoltage threshold while the switch circuit is in the non-conductive state;record an indication of an occurrence of an overvoltage event and compel the switch circuit to remain in the conductive state in response to the supply voltage sample signal exceeding a second overvoltage threshold that is higher than the first overvoltage threshold while the switch circuit is in the conductive state; andcompel the switch circuit into the non-conductive state in response to the supply voltage signal exceeding a third overvoltage threshold that is higher than the second overvoltage threshold while the switch circuit is in the conductive state.