US 12,261,445 B2
Optimizer for solar string power generation systems and a method thereof
Ilya Nemenman, Modi 'in Makabim-Re 'ut (IL); Shlomo Adler, Jerusalem, IL (US); and Evsei Berman, Netanya (IL)
Assigned to VIGDU V TECHNOLOGIES LTD, Netanya (IL)
Filed by VIGDU V TECHNOLOGIES LTD, Netanya (IL)
Filed on Mar. 15, 2023, as Appl. No. 18/121,866.
Application 18/121,866 is a continuation of application No. 17/295,517, granted, now 11,621,564, previously published as PCT/IL2019/051230, filed on Nov. 11, 2019.
Claims priority of application No. 263276 (IL), filed on Nov. 25, 2018.
Prior Publication US 2023/0216310 A1, Jul. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 3/38 (2006.01); G05F 1/67 (2006.01); H02J 3/46 (2006.01); H02J 7/35 (2006.01); H02S 40/32 (2014.01)
CPC H02J 3/381 (2013.01) [G05F 1/67 (2013.01); H02J 3/46 (2013.01); H02J 7/35 (2013.01); H02J 2300/26 (2020.01); H02S 40/32 (2014.12)] 17 Claims
OG exemplary drawing
 
1. An optimizer for a solar string power generation system comprising:
an array of strings of solar panels where at least a part of said solar panels are connected in series in said strings, and wherein said strings are connected in parallel to form said array of strings of solar panels;
a DC bus, connected to said array of strings;
an inverter, connected, at its input, to said DC bus, for converting a solar DC power, from said array of strings, to an AC power;
at least one Injection Circuit (IC), connected at an input thereof, to at least one string of said strings and also connected, at its input, to another IC which its input is connected to at least one more string comprising:
an MPPT mechanism, for finding the MPP of said connected at least one string;
a DC/DC converter, for converting at least a part of a power of said connected at least one string; and
wherein said DC/DC converter, of said IC, converts, using a power conversion, part of the power of said connected at least one string, for compensating for a relative voltage difference between a MPP voltage, of said connected at least one string, and a voltage of said DC bus thereby compensating for a decrease in voltage, of said connected at least one string, to correspond with a voltage of said DC bus, on an expense of a current of said connected at least one string.