Journal ArticleDOI
Single-Source, Single-Destination Charge Migration in Hybrid Electrical Energy Storage Systems
TLDR
This paper provides a systematic solution for the single-source, single-destination charge migration problem considering the efficiency variation of the converters, the rate capacity and internal power loss of the storage element, the terminal voltage variation ofThe storage elements as a function of their state of charge, and so on.Abstract:
In spite of extensive research it is still quite expensive to store electrical energy without converting it to a different form of energy. As of today, no single type of electrical energy storage (EES) element can fulfill all the desirable features of an ideal storage device, e.g., high-efficiency, high-power/energy capacity, low-cost, and long-cycle life. A hybrid EES system (HEES) consists of two or more heterogeneous EES elements, realizing the advantages of each EES element while hiding their weaknesses. HEES systems exhibit superior performance compared with homogeneous EES systems when appropriate charge allocation and replacement policies are developed and used. In addition, charge migration is mandatory because the optimal EES banks for charge allocation and replacement are in general different, and each EES bank has limited storage capacity. This paper formally describes the notion of charge migration efficiency and its optimization. We first define the charge migration architecture and the corresponding charge migration optimization problem. We provide a systematic solution for the single-source, single-destination charge migration problem considering the efficiency variation of the converters, the rate capacity and internal power loss of the storage element, the terminal voltage variation of the storage elements as a function of their state of charge, and so on. We also introduce the optimal solutions for both the time-constrained and -unconstrained versions of the charge migration problem formulations. Experimental results demonstrate significant charge migration efficiency improvement of up to 83.4%.read more
Citations
More filters
Journal ArticleDOI
Battery-supercapacitor hybrid energy storage system in standalone DC microgrids: areview
TL;DR: This study reviews and discusses the technological advancements and developments of battery-supercapacitor based HESS in standalone micro-grid system, and the system topology and the energy management and control strategies are compared.
Journal ArticleDOI
Modular Active Charge Balancing for Scalable Battery Packs
Swaminathan Narayanaswamy,Matthias Kauer,Sebastian Steinhorst,Martin Lukasiewycz,Samarjit Chakraborty +4 more
TL;DR: A closed-form analytical model of the balancing architecture is proposed, which can be used to perform fast system-level simulation studies and design space exploration for analyzing efficient device combinations and provides a 14.5 % improvement in charge transfer efficiency compared with existing approaches.
Journal ArticleDOI
Advanced Power Sharing Method to Improve the Energy Efficiency of Multiple Battery Energy Storages System
TL;DR: In this paper, a hierarchical control structure and three types of the power sharing methods for a multiple battery energy storages system were proposed, and a usable energy sharing algorithm was proposed to distribute the output power evenly according to the available energy of each battery.
Journal ArticleDOI
Distributed Control With Virtual Capacitance for the Voltage Restorations, State of Charge Balancing, and Load Allocations of Heterogeneous Energy Storages in a DC Datacenter Microgrid
TL;DR: This paper proposes a distributed coordination control strategy for load sharing and energy balancing between heterogeneous energy storages that achieves battery state of charge balancing and regulation of the local bus voltages.
Book ChapterDOI
Joint Computing and Electric Systems Optimization for Green Datacenters
TL;DR: This chapter presents an optimization framework to manage green datacenters using multilevel energy reduction techniques in a joint approach to reduce the energy intake from the grid while improving its Quality of Service (QoS).
References
More filters
Journal ArticleDOI
Pattern Recognition and Machine Learning
TL;DR: This book covers a broad range of topics for regular factorial designs and presents all of the material in very mathematical fashion and will surely become an invaluable resource for researchers and graduate students doing research in the design of factorial experiments.
Book ChapterDOI
Introduction to Algorithms
TL;DR: This chapter provides an overview of the fundamentals of algorithms and their links to self-organization, exploration, and exploitation.
Journal ArticleDOI
Progress in electrical energy storage system: A critical review
TL;DR: In this paper, a review of electrical energy storage technologies for stationary applications is presented, with particular attention paid to pumped hydroelectric storage, compressed air energy storage, battery, flow battery, fuel cell, solar fuel, superconducting magnetic energy storage and thermal energy storage.
Journal ArticleDOI
Accurate electrical battery model capable of predicting runtime and I-V performance
Min Chen,Gabriel A. Rincon-Mora +1 more
TL;DR: An accurate, intuitive, and comprehensive electrical battery model is proposed and implemented in a Cadence environment that accounts for all dynamic characteristics of the battery, from nonlinear open-circuit voltage, current-, temperature-, cycle number-, and storage time-dependent capacity to transient response.