Patent ID: 9722423
Date: 2017-08-01
CPC Classifications: H02J,H02M,Y02B,Y02E,Y04S

Claim:
1. A distributed energy generation inverter system for applying volt-ampere reactive (VAR) control to an alternating current (AC) output, the distributed energy generation inverter system comprising: a plurality of individual inverters, each individual inverter comprising a direct current (DC) power input for receiving DC power from a DC source, an AC power output for supplying AC power to a common AC circuit, and a reactive element switchable to be connected in parallel to the AC output; and a controller communicatively coupled to each of the plurality of inverters, the controller configured to monitor the individual power output of each inverter, determine a fraction of the maximum total potential power being supplied by the plurality of inverters, and when the fraction is above a pre-determined threshold, selectively controlling one or more of the individual inverters to switch their respective reactive elements into parallel connection across the respective AC outputs.