Table 3
Comparisons of AC and DC microgrids.
| Number | AC microgrids | DC microgrids |
|---|---|---|
| Operating efficiency | Multiple conversion stages, low efficiency | Few conversion stages, high efficiency |
| Control performance | Complexity in control | Flexibility in control |
| Operating cost | Low | High, requiring expensive devices |
| Power quality issues | Harmonics, frequency disturbances | Voltage ripple |
| Technology maturity | Highly mature | Developmental stage |
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