US 12,222,741 B2
Extender and stabilizer for solar string power generation systems and a method thereof
Shlomo Haim Adler, Jerusalem (IL)
Assigned to SOLAD—SOLAR ELECTRONICS LTD., Jerusalem (IL)
Appl. No. 18/038,572
Filed by SOLAD-SOLAR ELECTRONICS LTD., Jerusalem (IL)
PCT Filed Nov. 25, 2021, PCT No. PCT/IL2021/051402
§ 371(c)(1), (2) Date May 24, 2023,
PCT Pub. No. WO2022/113074, PCT Pub. Date Jun. 2, 2022.
Claims priority of provisional application 63/118,941, filed on Nov. 29, 2020.
Prior Publication US 2024/0004413 A1, Jan. 4, 2024
Int. Cl. G05F 1/67 (2006.01); H02J 7/35 (2006.01)
CPC G05F 1/67 (2013.01) [H02J 7/35 (2013.01); H02J 2300/26 (2020.01)] 10 Claims
OG exemplary drawing
 
1. An apparatus for extending string size and maximizing the power of a multi module solar string power generation system, comprising:
at least one string comprising a primary substring of solar panels and an extension substring of solar panels with at least one solar panel;
a DC-Bus connected to said string;
a solar inverter, connected, at its input, to said DC-Bus, for converting the solar DC power, from said at least one string, to AC power; and
an Injection Circuit (IC), connected to said primary substring and said DC-Bus, wherein said IC is also connected to said extension substring, which comprises at least one solar panel, and wherein said IC maximizes the power production of said connected primary substring, utilizes the energy produced by the said extension substring to lift up and regulate the voltage level of the said DC-Bus and conducts the excess power from said extension substring to said solar inverter via said DC-Bus, where said IC comprises:
a first MPPT mechanism, for finding the MPP of said primary substring, connected to said IC;
a second MPPT mechanism, for finding the MPP of said extension substring, connected to said IC;
a first DC/DC converter, for converting and regulating the power of said connected primary substring by converting some of the power, from said extension substring to lift up the voltage of the said DC-Bus to a desired voltage level; and
a second DC/DC converter, for converting and regulating the power from said extension substring and for converting and utilizing the excess power from said extension substring to said DC-Bus.