Abstract
In this study, we investigate the resilience of DC microgrids in the face of disturbances that could induce boost converter failures. We associate the converter failure conditions with disturbances and implement a power buffer control system, which prevents voltage collapse and promotes system stability. A new resilience model is proposed that considers general power mismatches for a comprehensive resilience evaluation. We further evaluate the resilience of an interconnected DC microgrid where the stability of the system is ensured through proofs and examine the role of power buffer control in enhancing resilience against disturbances. The results validate the significance of power buffer control in augmenting DC microgrid resilience. The hardware-in-the-loop experiment study demonstrates over 32% improvement of resilience using the proposed control.
| Original language | English |
|---|---|
| Pages (from-to) | 4233-4246 |
| Number of pages | 14 |
| Journal | IEEE Transactions on Circuits and Systems I: Regular Papers |
| Volume | 71 |
| Issue number | 9 |
| DOIs | |
| State | Published - 2024 |
Keywords
- DC microgrids
- combined disturbance
- power buffers
- resilience metric
- voltage collapse
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