Research Article
Open Circuit Fault Diagnosis in Five-Level Cascaded H-Bridge Inverter
Table 2
Current path for healthy and faulty condition for all switches.
| | OCF switch | Current path for healthy condition | Current path for faulty condition | Missing output voltage level |
| | SX1 | EDC-SX1-a-d-SX7-EDC-SX5-c-b-SX3-EDC | a-d-SX7-EDC-SX5-c-b-SX3-DX4-EDC | +2EDC | | SX2 | EDC-SX2-b-c-SX8-DX7-d-b-SX3-EDC | b-c-SX8-DX7-d-b-SX3-DX4-a | -EDC | | SX3 | EDC-SX1-a-d-SX7-DX8-c-b-SX3 | a-d-SX7-DX8-c-b-DX2-SX1 | +EDC | | SX4 | EDC-SX2-b-c-SX8-DX7-d-b-SX4 | b-c-SX8-DX7-d-a-DX1-SX2 | -EDC | | SX5 | EDC-SX5-c-b-SX3-DX4-a-d-SX7 | c-b-SX3-DX4-a-d-SX7-DX8 | +EDC | | SX6 | EDC-SX2-b-c-SX8-EDC-SX6-d-a-SX4-EDC | EDC-SX2-b-c-SX8-DX7-d-a-SX4-EDC | -2EDC | | SX7 | c-b-SX3-DX4-a-d-DX6-SX5 | EDC-SX5-c-b-SX3-DX4-a-d-SX7 | +EDC | | SX8 | EDC-SX6-d-a-SX4-DX3-b-c-SX8 | d-a-SX4-DX3-b-c-DX5-SX8 | -EDC |
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