| Issue |
MATEC Web of Conferences
Volume 31, 2015
2015 7th International Conference on Mechanical and Electronics Engineering (ICMEE 2015)
|
|
|---|---|---|
| Article Number | 08003 | |
| Number of page(s) | 4 | |
| Section | Power electronics and power transmission | |
| DOI | https://doi.org/10.1051/matecconf/20153108003 | |
| Published online | 23 November 2015 | |
Energy Storage System Based on Cascaded Multilevel Inverter with Decoupled Energy Balancing Control
1 China Electric Power Research Institute, Nanjing 210003, China
2 Department of Electrical Engineering, Southeast University, Nanjing 210096, China
a Corresponding author: author@e-mail.org
This paper presents a three phase cascaded multilevel inverter based supercapacitor (SC) energy storage system with novel structure and control strategy to maintain the energy balance of between phases. Every two phases are coupled with a series LC filter. With the filter, SC cells in different phases could exchange energy with an auxiliary power flow at high frequency. The auxiliary power flow is orthogonal to the primary power flow. The phase difference between high frequency voltage and current components of each phase determines whether the energy is absorbed into or released from its SC cells. Unlike traditional energy balancing strategies, the proposed method is independent to the fundamental real power drawn by the energy storage system. Simulation results confirmed the effects of proposed theories.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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