Patent ID: 9142956
Filing Date: 2015-09-22
Classification: H02J,H02M

Abstract:
1. A multilevel power converter comprising: a DC power supply assembly having first and second single DC power supplies connected in series, and three terminals of a positive terminal, a zero terminal, and a negative terminal; a first semiconductor switch series circuit composed of first through sixth semiconductor switches, each having an antiparallel-connected diode, connected in series in this order between the positive terminal and the negative terminal of the DC power supply assembly; a second semiconductor switch series circuit composed of a first bidirectional switch, seventh and eighth semiconductor switches each having an antiparallel-connected diode, and second bidirectional switch connected in series in this order between a connection point of the first semiconductor switch and the second semiconductor switch and the connection point of the fifth semiconductor switch and the sixth semiconductor switch; a first capacitor connected in parallel with a series circuit of the third semiconductor switch and the fourth semiconductor switch; and a second capacitor connected in parallel with the second semiconductor switch series circuit; wherein the zero terminal of the DC power supply assembly is connected to a connection point of the seventh semiconductor switch and the eighth semiconductor switch; and an AC terminal is at a connection point of the third semiconductor switch and the fourth semiconductor switch.