Five-level PV inverter based on a multi-state switching cell

摘要

A five-level active neutral-point-clamping inverter for converting a bipolar DC-voltage (V_DC+ and V_DC−) to a three-phase AC output voltage, the converter comprising first, second and third input terminals (P, MP, N) and first, second and third output terminals, where the inverter further comprises a first multi-state switching cell (MSSC) comprising three input terminals respectively connected to the input terminals of the inverter and a first output terminal, a second MSSC comprising three input terminals respectively connected to the input terminals of the inverter and a second output terminal and a third MSSC comprising three input terminals respectively connected to the input terminals of the inverter and a third output terminal.