| 摘要 |
A three-level inverter comprising: a first direct current source (BUS1) and a second direct current source (BUS2), where the negative electrode of the first direct current source and the positive electrode of the second direct current source are connected to serve as a first node (N); sequentially connected in series between the positive electrode of the first direct current source and the negative electrode of the second direct current source, a first switch transistor (Q1), a second switch transistor (Q2), a third switch transistor (Q3), and a fourth switch transistor (Q4), where the connection between the first switch transistor (Q1) and the second switch transistor (Q2) is a second node (B), where the connection between the second switch transistor (Q2) and the third switch transistor (Q3) is a third node (O), and where the connection between the third switch transistor (Q3) and the fourth switch transistor (Q4) is a fourth node (D); a first diode (D1) connected between the first node (N) and the second node (B), a second diode (D2) connected between the first node (N) and the fourth node (D), and a filter unit (1) connected between the first node (N) and the third node (O); also comprising a fifth switch transistor (Q5) connected between the second node (B) and the fourth node (D). The inverter reduces circuit losses, increases efficiency, and facilitates heat dissipation. |
