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Title: Control of cascaded DC-DC converter-based hybrid battery energy storage systems - Part II: Lyapunov approach
Authors: Mukherjee, Nilanjan
Strickland, Dani
Keywords: Cascaded dc-dc converters
Hybrid battery energy storage systems
Lyapunov control
Stability
Issue Date: 2015
Publisher: © IEEE
Citation: MUKHERJEE, N. and STRICKLAND, D., 2015. Control of cascaded DC-DC converter-based hybrid battery energy storage systems - Part II: Lyapunov approach. IEEE Transactions on Industrial Electronics, 63 (5), pp. 3050-3059.
Abstract: A cascaded dc-dc boost converter is one of the ways to integrate hybrid battery types within a grid-tie inverter. Due to the presence of different battery parameters within the system such as, state-of-charge and/or capacity, a module-based distributed power sharing strategy may be used. To implement this sharing strategy, the desired control reference for each module voltage/current control loop needs to be dynamically varied according to these battery parameters. This can cause stability problem within the cascaded converters due to relative battery parameter-variations when using the conventional proportional-integral (PI) control approach. This paper proposes a new control method based on Lyapunov functions to eliminate this issue. The proposed solution provides a global asymptotic stability at a module level avoiding any instability issue due to parameter variations. A detailed analysis and design of the nonlinear control structure is presented under the distributed sharing control. At last thorough experimental investigations are shown to prove the effectiveness of the proposed control under grid-tie conditions.
Description: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, 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 component of this work in other works.
Sponsor: This work was supported by the Engineering and Physical Sciences Research Council (EPSRC), U.K., under Grant EP/1008764/1 and Grant EP/137649.
Version: Accepted for publication
DOI: 10.1109/TIE.2015.2511159
URI: https://dspace.lboro.ac.uk/2134/24979
Publisher Link: http://dx.doi.org/10.1109/TIE.2015.2511159
ISSN: 0278-0046
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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