State No. | Switching States | Voltages | |||||||
S1 | S2 | S3 | S4 | S5 | S6 | Vab | Vbc | Vca | |
1 | ON | ON | OFF | OFF | OFF | ON | Vs | 0 | −Vs |
2 | ON | ON | ON | OFF | OFF | OFF | 0 | Vs | −Vs |
3 | OFF | ON | ON | ON | OFF | OFF | −Vs | Vs | 0 |
4 | OFF | OFF | ON | ON | ON | OFF | −Vs | 0 | Vs |
5 | OFF | OFF | OFF | ON | ON | ON | 0 | −Vs | Vs |
6 | ON | OFF | OFF | OFF | ON | ON | Vs | −Vs | 0 |
7 | ON | OFF | ON | OFF | ON | OFF | 0 | 0 | 0 |