Research Article
On the Reliability of Transformerless Photovoltaic DC/AC Converters Based on Mission Profile
Table 13
Percentage of contribution to the failure rate of the photovoltaic system.
| | Inverter failure rate | LCL filter failure rate | Topology | Switches | Diodes | Capacitors | Inductors | Capacitors | MOSFET | Parasitic diode |
| Full bridge | 97.73% | X | X | X | 2.21% | 0.06% | Double buck | 50.06% | X | 48.77% | X | 1.13% | 0.04% | H5 | 71.00% | 27.67% | X | X | 1.30% | 0.03% | HERIC | 74.61% | 24.23% | X | X | 1.13% | 0.03% | H6 | 74.61% | X | 24.22% | X | 1.13% | 0.04% | NPC | 66.21% | X | 32.25% | X | 1.51% | 0.03% | Virtual DC bus | 98.14% | X | X | 0.04% | 1.78% | 0.04% |
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X indicates that it is not applied for the system.
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