Abstract
DC electric springs (DCES) have recently been proposed as a potential solution for resolving the issue of power supply-demand imbalance of DC microgrids caused by the fluctuations of intermittent renewable energy sources (RES). Existing control of DCES based on conventional PI compensation are designed for good steady-state performance. The dynamic performance of DCES has not been explored. In this paper, an enhanced digital PI control comprising a state-variable feedback loop, aimed at optimizing both the steady-state and transient performances of the DCES, is proposed. Experiment results show that with this control, faster transient of the DCES is achievable and that the DCES can rapidly tame the possible fluctuations of renewable energy sources in a 48 V DC test grid more effectively. © 2017 IEEE.
| Original language | English |
|---|---|
| Title of host publication | 2017 IEEE Applied Power Electronics Conference and Exposition (APEC) |
| Publisher | IEEE |
| Pages | 1242-1247 |
| ISBN (Electronic) | 978-1-5090-5366-7 |
| DOIs | |
| Publication status | Published - 2017 |
| Externally published | Yes |
| Event | 32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States Duration: 26 Mar 2017 → 30 Mar 2017 |
Publication series
| Name | Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC |
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Conference
| Conference | 32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 |
|---|---|
| Place | United States |
| City | Tampa |
| Period | 26/03/17 → 30/03/17 |
Funding
This project is supported in part by the Hong Kong Research Grant Council under the Theme-Based Research Scheme T23-701/14-N.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Research Keywords
- DC electric springs (DCES)
- DC microgrids
- Digital feedback control
- Dynamic modeling
- State-variable feedback
RGC Funding Information
- RGC-funded
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