Abstract
A decentralized improved I-V droop control strategy for battery-supercapacitor (SC) hybrid energy storage system (HESS) is proposed in this paper. The dynamic power sharing between battery and SC is realized by replacing the constant droop coefficient in I-V droop control with virtual impedance, i.e. virtual inductance for battery side converter and virtual resistance for SC side converter. Besides, by injecting the virtual inductance in the battery side converter, negligible DC bus voltage deviation can be achieved without extra voltage compensator. Moreover, the state-of-charge (SoC) recovery is also considered to extend the service life of the HESS. Furthermore, in the proposed regulated power system, since the power allocation, DC bus stability and SoC recovery are decoupled from each other, the design of control parameters is simple. The corresponding design guideline is demonstrated in this paper. Finally, to verify the accuracy and feasibility of the theoretical analyses, hardware in the loop simulations have been conducted.
| Original language | English |
|---|---|
| Article number | 9261981 |
| Pages (from-to) | 2227-2238 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Energy Conversion |
| Volume | 36 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 2021 |
| Externally published | Yes |
Keywords
- Hybrid energy storage system (HESS)
- I-V droop control
- power allocation
- state-of-charge (SoC) recovery
Fingerprint
Dive into the research topics of 'A Decentralized Automatic Load Power Allocation Strategy for Hybrid Energy Storage System'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver