US 12,328,059 B2
Input voltage control for a DC/AC power converter
Matan Atias, Tel Aviv (IL); and Liron Har-Shai, Tel Mond (IL)
Assigned to Solaredge Technologies Ltd., Herzeliya (IL)
Filed by Solaredge Technologies Ltd., Herzeliya (IL)
Filed on Aug. 15, 2023, as Appl. No. 18/450,087.
Application 18/450,087 is a continuation of application No. 17/489,856, filed on Sep. 30, 2021, granted, now 11,770,063.
Claims priority of provisional application 63/085,457, filed on Sep. 30, 2020.
Prior Publication US 2023/0387778 A1, Nov. 30, 2023
Int. Cl. H02M 7/10 (2006.01); H02J 3/38 (2006.01); H02M 1/00 (2006.01); H02M 3/07 (2006.01)
CPC H02M 1/0022 (2021.05) [H02J 3/381 (2013.01); H02M 1/007 (2021.05); H02M 3/07 (2013.01); H02J 2300/24 (2020.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a DC/AC module comprising: direct current (DC) to alternating current (AC) converter circuitry configured to convert DC power to AC power;
a first terminal, a second terminal, a third, terminal, a fourth terminal, and a midpoint terminal, wherein the DC/AC module is connected between the first terminal and the second terminal;
a first capacitor connected between the first terminal and the midpoint terminal;
a second capacitor connected between the second terminal and the midpoint terminal;
a first switch configured to switch between: connecting the third terminal to the first terminal, and connecting the third terminal to the midpoint terminal;
a second switch configured to switch between: connecting the fourth terminal to the second terminal, and connecting the fourth terminal to the midpoint terminal; and
one or more controllers configure to control the first switch and the second switch to operate the apparatus in a plurality of configuration modes that includes at least two of:
an above ground potential voltage-boost configuration mode, a below ground potential voltage-boost configuration mode, and a non-voltage-boost configuration mode,
wherein in the above ground potential voltage-boost configuration mode maintains a voltage input to the DC to AC converter circuitry to be greater than a voltage across the third and the fourth terminals, and maintains voltages at the third and fourth terminals to be equal to or positive relative to a ground reference,
wherein in the below ground potential voltage-boost configuration mode maintains the voltage input to the DC to AC converter circuitry to be greater than a voltage across the third and the fourth terminals, and maintains voltages at the third and fourth terminals to be equal to or negative relative to a ground reference, and
the non-voltage-boost configuration mode maintains the voltage input to the DC to AC converter circuitry to be equal to a voltage across the third and the fourth terminals.