Disclosed herein is a five-level
rectifier that includes first, second, third, fourth power
semiconductor switches, first and second
DC bus capacitors, a phase
capacitor, and first, second, third and fourth
diode modules. The first, second, third and fourth
diode modules are connected in series, the first and second
DC bus capacitors are connected in series, and the second and third power
semiconductor switches are connected in series. The first
diode module is connected to the first
DC bus capacitor and the first power
semiconductor switch, and the fourth diode module is connected to the second
DC bus capacitor and the fourth power semiconductor switch. The phase
capacitor has a terminal connected to the first and second power semiconductor switches, and another terminal connected to the third and fourth power semiconductor switches.