MULTILEVEL POWER CONVERTER Russian patent published in 2017 - IPC H02M7/483 

FIELD: physics, instrument-making.

SUBSTANCE: invention relates to conversion equipment. Base phase circuit U comprises semiconductor elements (SU1.1-SU1.4) from first through fourth, connected between the lead of a positive electrode and the lead of a negative electrode of a DC voltage source (DCC1), a fifth semiconductor element (SU1.5), having a connection with the common connection point of the first and second semiconductor elements (SU1.1, SU1.2), and a sixth semiconductor element (SU1.6), having a connection with the common connection point of the third and fourth semiconductor elements (SU1.3, SU1.4). A floating capacitor (FC1) is connected between the fifth semiconductor element (SU1.5) and a sixth semiconductor element (SU1.6). Voltage selection circuits as input terminals have common connection points of the second and third semiconductor elements (SU1.2, SU1.3) of corresponding base circuits and comprise, between the input terminals and the output terminal (U, V, W), semiconductor elements (SU1-SU4).

EFFECT: in a multilevel power converter, arbitrary voltages of all phases can be applied at the output, wherein control needed to apply arbitrary voltage levels of all phases is easier.

18 cl, 30 dwg, 2 tbl