Patent ID: 9331595
Filing Date: 2016-05-03
CPC Classification: H02M

Claim Text:
1. A multi-level inverter comprising: a rectifying unit configured to receive a phase voltage from a 3-phase power source and provide a rectified voltage; a smoothing unit configured to receive the rectified voltage and provide the received rectified voltage as voltages having different levels to first to third nodes; and an inverter unit including a plurality of switch units to transmit the voltages having three levels provided from the smoothing unit to a load, wherein the inverter unit includes a first switch unit provided between the first node and a first output terminal, second switch units provided between the second node and the first output terminal, a third switch unit provided between the third node and the first output terminal, a fourth switch unit provided between the first node and a second output terminal, a fifth switch unit provided between the second node and the second output terminal, and a sixth switch unit provided between the third node and the second output terminal; wherein the first switch unit comprises: wherein the third switch unit comprises: wherein the fifth switch unit comprises: wherein the cathode of the first diode and the cathode of the second diode in the fifth switch unit are directly connected to each other.