US 9,812,984 B2
Maximizing power in a photovoltaic distributed power system
Ilan Yoscovich, Ramat Gan (IL)
Assigned to Solaredge Technologies Ltd., Herzeliya (IL)
Filed by Solaredge Technologies Ltd., Herzeliya (IL)
Filed on Jan. 30, 2013, as Appl. No. 13/754,059.
Prior Publication US 2013/0193765 A1, Aug. 1, 2013
Int. Cl. H02M 7/42 (2006.01); H02J 3/38 (2006.01)
CPC H02M 7/42 (2013.01) [H02J 3/385 (2013.01); Y02E 10/58 (2013.01); Y10T 307/675 (2015.04); Y10T 307/685 (2015.04)] 17 Claims
OG exemplary drawing
 
1. A system comprising:
a plurality of parallel-connected compensated photovoltaic strings, each compensated photovoltaic string including:
a photovoltaic string having a series-connection of photovoltaic cells; and
a voltage-compensation circuit having an input connected to a source of power independent from power provided by the photovoltaic string, wherein the voltage-compensation circuit is configured to produce, from the source of power, an output power having an adjustable compensation voltage at a voltage output connected in series with a voltage generated by said photovoltaic string such that a total voltage of the compensated photovoltaic string maintains a predetermined value;
a central controller connected to the voltage-compensation circuits and configured to control the adjustable compensation voltages; and
a power sensor connected to a direct current output of the plurality of the parallel-connected compensated photovoltaic strings and to the central controller, wherein the power sensor is configured to sense a power parameter at the direct current output and provide the sensed power parameter to the central controller,
wherein the central controller is configured to control the adjustable compensation voltages based on a maximum power from all the parallel-connected compensated photovoltaic strings and based on the sensed power parameter.