Patent ID: 9209707
Filing Date: 2015-12-08
Classification: H02J,H02M,Y02E

Abstract:
1. An apparatus for controlling a three-level inverter having two direct current (DC)-links for converting DC power generated in a plurality of photovoltaic (PV) modules into alternating current (AC) power, wherein one end of a first DC-link of the two DC-links is connected to a first potential point at which a first potential is generated in the plurality of PV modules, and one end of a second DC-link of the two DC-links is connected to a second potential point at which a second potential that is lower than the first potential is generated in the plurality of PV modules, and both an other end of the first DC-link and an other end of the second DC-link are connected to a third potential point at which a third potential having a medium level between the first potential and the second potential is generated in the plurality of PV modules, the apparatus comprising: