| 摘要 |
The present invention discloses a tri-level inverter, which relates to the field of power electronics technologies, to reduce the loss of a circuit, improve efficiency and facilitate heat dissipation. The tri-level inverter includes: a first direct current source and a second direct current source, where a joint where a negative terminal of the first direct current source and a positive terminal of the second direct current source are connected is used as a first node; a first switch tube, a second switch tube, a third switch tube, and a fourth switch tube that are sequentially connected in series between a positive terminal of the first direct current source and a negative terminal of the second direct current source, where a joint where the first switch tube and the second switch tube are connected is a second node, a joint where the second switch tube and the third switch tube are connected is a third node, and a joint where the third switch tube and the fourth switch tube are connected is a fourth node; a first diode connected between the first node and the second node; a second diode connected between the first node and the fourth node; and a filter unit connected between the first node and the third node. The tri-level inverter further includes: a fifth switch tube, where the fifth switch tube is connected between the second node and the fourth node. |
