Hierarchical hybrid power supply networks
Proceedings of the 47th Design Automation Conference
Maximum power transfer tracking for a photovoltaic-supercapacitor energy system
Proceedings of the 16th ACM/IEEE international symposium on Low power electronics and design
Hybrid electrical energy storage systems
Proceedings of the 16th ACM/IEEE international symposium on Low power electronics and design
DC–DC Converter-Aware Power Management for Low-Power Embedded Systems
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Networked architecture for hybrid electrical energy storage systems
Proceedings of the 49th Annual Design Automation Conference
Optimal control of a grid-connected hybrid electrical energy storage system for homes
Proceedings of the Conference on Design, Automation and Test in Europe
Improving charging efficiency with workload scheduling in energy harvesting embedded systems
Proceedings of the 50th Annual Design Automation Conference
Hybrid energy storage systems and battery management for electric vehicles
Proceedings of the 50th Annual Design Automation Conference
State of health aware charge management in hybrid electrical energy storage systems
DATE '12 Proceedings of the Conference on Design, Automation and Test in Europe
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Hybrid electrical energy storage (HEES) systems, composed of multiple banks of heterogeneous electrical energy storage (EES) elements with their unique strengths and weaknesses, have been introduced to efficiently store and retrieve electrical energy while attaining performance metrics that are close to their respective best values across their constituent EES elements. This paper is the first paper to formally describe the charge allocation problem and provide a systematic solution method aiming at the maximum charge allocation efficiency, which performing proper distribution of the incoming power to selected destination banks. We introduce a generalized HEES architecture and build the corresponding electrical circuit models of the chargers and banks. We formulate a mixed integer nonlinear optimization problem, where the objective function is the global charge allocation efficiency, and the constraints are energy conservations, with careful consideration of the conversion power loss in the chargers, rate capacity effect and self-discharge of the EES elements, charge transfer losses, and so on. We present a rigorous algorithm to achieve a near-optimal global charge allocation efficiency for long-term charge allocation process (i.e., tens of hours.) Experimental results based on a photovoltaic cell array as the incoming power source and a HEES system comprised on batteries and supercapacitors demonstrate a significant gain in charge allocation efficiency for the proposed algorithm.