US 11,658,483 B2
Maximum power point tracking through load management
Joseph Azzolini, Tempe, AZ (US); and Meng Tao, Fountain Hills, AZ (US)
Assigned to ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, Scottsdale, AZ (US)
Filed by Joseph Azzolini, Tempe, AZ (US); and Meng Tao, Fountain Hills, AZ (US)
Filed on Dec. 16, 2021, as Appl. No. 17/552,782.
Claims priority of provisional application 63/126,053, filed on Dec. 16, 2020.
Prior Publication US 2022/0190598 A1, Jun. 16, 2022
Int. Cl. H02J 3/00 (2006.01); H02J 3/28 (2006.01); H02J 3/38 (2006.01)
CPC H02J 3/007 (2020.01) [H02J 3/28 (2013.01); H02J 3/381 (2013.01); H02J 2300/26 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A load management system for a solar photovoltaic (PV) system, the system comprising:
a PV array of solar modules;
a plurality of loads configured to be powered by the PV array and switched on or off by a plurality of respective relays;
a power sensor configured to measure an amount of power delivered from the PV array to the plurality of loads; and
a controller coupled to the power sensor and the plurality of relays and configured to:
determine, by the power sensor, a first power output of the PV array at a first time;
cause, via a relay, a switch of a load;
determine, by the power sensor, a second power output of the PV array at a second time which is later than the first time after the switching of the load;
compare the first power output and the second power output; and
based on the comparison:
if the second power output is greater than the first power output, maintain the switched load in its switched connection; and
if the second power output is not greater than the first power output, cause, by the relay, undoing of the switch of the load;
wherein a power output of the PV array is not configured to be routed through the controller for conditioning or managing prior to being delivered to any of the plurality of loads, and
wherein the solar PV system does not comprise power conditioning electronics for the power output of the PV array.