Multi-level inverter

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, fifth switch units 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.