CONNECTIVITY CONTROL OF PHOTOVOLTAIC GENERATORS VIA POWER LINE COMMUNICATION

World Intellectual Property Organization Patent

APP PUB NO WO-2012166946-A2
SERIAL NO

PCTUS2012040243

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A remote resource (240) can be configured to control connectivity of the power generator modules (220-1, 220-2, 220-N) in a string. For example, a respective power generator module (220) can include a current sense circuit (330) that monitors for presence of communication signal (240-S). The power generator module (220) can monitor for a presence of a remotely generated control signal (240-S) over power line (250) that is used by the respective power generator module to convey power to the external load (230). If the control signal (240-S) is present on the power line (250), as generated by the remote resource (240), the control circuit (320) in the respective power generator module (220) activates the switch (350) to an ON state such that respective activated power generator module (220) is connected in series with the other activated power generator modules. If no keep-alive control signal (240-S) is detected within a timeout period, the controller (320) deactivates the respective power generator module (220).

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