SYSTEMS AND METHODS FOR REMOTE OR LOCAL SHUT-OFF OF A PHOTOVOLTAIC SYSTEM

摘要

Systems and methods for shut-down of a photovoltaic system. In one embodiment, a method implemented in a computer system includes: communicating, via a central controller, with a plurality of local management units (LMUs), each of the LMUs coupled to control a respective solar module; receiving, via the central controller, a shut-down signal from a user device (e.g., a hand-held device, a computer, or a wireless switch unit); and in response to receiving the shut-down signal, shutting down operation of the respective solar module for each of the LMUs.

主权项

1. A local management unit of a solar module, comprising:
a communication module; a controller; a circuit path coupled between outputs of the solar module, the circuit path comprising a first switch connected in series with a diode, wherein
the first switch is controlled by the controller,when the switch is a closed state, the diode is forward biased to provide a voltage to the controller using electric power generated by the solar module, andwhen the switch is an open state, the circuit path is open and the diode does not provide the voltage to power the controller; and at least one second switch connected to an output of the local management unit; wherein in response to a shut-down signal received via the communication module, the controller is configured to
activate the at least one second switch to prevent power generated by the solar module from being outputted from the local management unit, andactivate the first switch to receive from the diode the voltage for continue operations.