MULTILEVEL INVERTER

摘要

A multilevel inverter having an efficient structure is provided, the multilevel inverter including a modularized phase-shift transformer including a plurality of modules to provide a phase shifted voltage by receiving a 3-phase input voltage, a plurality of first group unit power cells configured to provide an output voltage of predetermined phase, a plurality of second group unit power cells configured to provide an output voltage of predetermined phase, a plurality of third group unit power cells configured to provide an output voltage of predetermined phase. One of the first group unit power cells, one of the second group unit power cells and one of the third group unit power cells are paired to provide an output voltage of same phase.

主权项

1. A multilevel inverter, the multilevel inverter comprising:
a modularized phase-shift transformer including a plurality of modules to provide a phase shifted voltage by receiving a 3-phase input voltage; a plurality of first group unit power cells configured to provide an output voltage of predetermined phase by performing a predetermined inverting operation by receiving a signal corresponding to each phase of a first phase voltage from any one module in the plurality of modules; a plurality of second group unit power cells configured to provide an output voltage of predetermined phase by performing a predetermined inverting operation through receipt of a signal corresponding to each phase of a second phase voltage from any one module in the plurality of modules; a plurality of third group unit power cells configured to provide an output voltage of predetermined phase by performing a predetermined inverting operation by receiving a signal corresponding to each phase of a third phase voltage from any one module in the plurality of modules; wherein one of the first group unit power cells, one of the second group unit power cells and one of the third group unit power cells are paired to provide an output voltage of same phase.