US 9,813,021 B2
System and method for enhanced watch dog in solar panel installations
Ron Hadar, Capitola, CA (US); Shmuel Arditi, Discovery Bay, CA (US); and James Bickford, Tacoma, WA (US)
Assigned to TIGO ENERGY, INC., Los Gatos, CA (US)
Filed by Tigo Energy, Inc., Los Gatos, CA (US)
Filed on Jul. 6, 2016, as Appl. No. 15/203,713.
Application 15/203,713 is a continuation of application No. 14/473,659, filed on Aug. 29, 2014, granted, now 9,397,612.
Application 14/473,659 is a continuation of application No. 13/092,783, filed on Apr. 22, 2011, granted, now 8,823,218, issued on Sep. 2, 2014.
Application 13/092,783 is a continuation in part of application No. 12/628,977, filed on Dec. 1, 2009, granted, now 8,933,321, issued on Jan. 13, 2015.
Application 13/092,783 is a continuation in part of application No. 12/411,317, filed on Mar. 25, 2009, granted, now 7,602,080, issued on Oct. 13, 2009.
Application 13/092,783 is a continuation in part of application No. 12/254,780, filed on Oct. 20, 2008, granted, now 7,884,278, issued on Feb. 8, 2011.
Claims priority of provisional application 61/343,155, filed on Apr. 22, 2010.
Claims priority of provisional application 61/276,753, filed on Sep. 16, 2009.
Claims priority of provisional application 61/275,977, filed on Sep. 3, 2009.
Claims priority of provisional application 61/200,601, filed on Dec. 2, 2008.
Claims priority of provisional application 61/001,587, filed on Nov. 2, 2007.
Prior Publication US 2016/0315585 A1, Oct. 27, 2016
Int. Cl. H02S 50/00 (2014.01); H01L 31/02 (2006.01); G01R 31/00 (2006.01); H02J 3/38 (2006.01)
CPC H02S 50/00 (2013.01) [G01R 31/00 (2013.01); H01L 31/02021 (2013.01); H02J 3/385 (2013.01); H04B 2203/5458 (2013.01); Y02E 10/50 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a photovoltaic panel configured to generate electric power; and
a local management unit coupled to the photovoltaic panel to receive the electric power as an input and generate a power output from the input;
wherein the local management unit is configured to communicate with a master control unit disposed at a location remote to the local management unit;
wherein a sensor is monitored for an anomaly; and
wherein in response to a determination that the sensor has detected the anomaly, and in response to a determination that the anomaly requires a control change, the local management unit shuts down the power output based on a communication with the master control unit;
wherein the local management unit is configured to receive heartbeat signals from the master control unit; and the local management unit shuts down the power output in response to a predetermined number of skips of the heartbeat signals.