Conference item
Novel MMC control for active balancing and minimum ripple current in series-connected battery strings
- Abstract:
-
The performance of a string of series-connected batteries is typically restricted by the worst battery cell in the string and a single failure point will render the entire string unusable. To address these issues, we present a decentralised battery management system based on a modular multilevel converter (MMC) with a distributed inductor. This novel MMC design enables each MMC cell to operate autonomously, without central control, by sensing the local inductor voltage. Batteries are loaded with a current proportional to their capacity, and the MMC cells also work together to minimize the output ripple voltage of the full series stack. We show experimentally that the novel decentralized controller implemented in each MMC cell can reduce the output voltage ripple by 69%. We also give an extensive theoretical analysis of the waveforms produced by the MMC using Fourier decomposition. This analysis has applications in all modular multilevel converters.
- Publication status:
- Published
- Peer review status:
- Reviewed (other)
Actions
Access Document
- Files:
-
-
(Preview, Accepted manuscript, pdf, 2.0MB, Terms of use)
-
- Publisher copy:
- 10.1109/EPE.2015.7309236
Authors
- Publisher:
- IEEE
- Journal:
- Power Electronics and Applications, European Conference on More from this journal
- Publication date:
- 2015-10-29
- Acceptance date:
- 2015-07-17
- Event location:
- Geneva, Switzerland
- DOI:
- ISBN:
- 9789075815221
- Keywords:
- Pubs id:
-
pubs:616161
- UUID:
-
uuid:449fe406-c898-45ce-9e36-39e731ad7d4e
- Local pid:
-
pubs:616161
- Source identifiers:
-
616161
- Deposit date:
-
2016-04-17
Terms of use
- Copyright holder:
- Institute of Electrical and Electronics Engineers (IEEE)
- Copyright date:
- 2015
- Notes:
- This is the author accepted manuscript version of the article. The final version is available online from Institute of Electrical and Electronics Engineers (IEEE) at: https://doi.org/10.1109/EPE.2015.7309236 © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
If you are the owner of this record, you can report an update to it here: Report update to this record