Journal ArticleDOI
Parallel Operation of Battery Power Modules
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TLDR
In this article, the discharging currents of the batteries are independently controlled, but coordinated to provide a full amount of the load current, which can avoid being overcharged or overdischarged.Abstract:
Operating batteries in parallel improves the battery power system management and resolves the problems of conventional battery banks that arrange batteries in series. The discharging currents of the batteries are independently controlled, but coordinated to provide a full amount of the load current. Batteries connected in parallel do not suffer from charge imbalance, and thus, can avoid being overcharged or overdischarged. Sophisticated discharging profiles can be realized to efficiently utilize the available stored energy in batteries. Some of the batteries may take rest or be isolated from the system for the open-circuit measurement during the operation period, thus, facilitating the estimation of the state-of-charge and the evaluation of state-of-health.read more
Citations
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Journal ArticleDOI
State-of-Charge Estimation for Lithium-Ion Batteries Using Neural Networks and EKF
TL;DR: This paper presents a method for modeling and estimation of the state of charge (SOC) of lithium-ion (Li-Ion) batteries using neural networks (NNs) and the extended Kalman filter (EKF).
Journal ArticleDOI
Battery equalization active methods
Javier Gallardo-Lozano,Enrique Romero-Cadaval,M. Isabel Milanes-Montero,Miguel Angel Guerrero-Martinez +3 more
TL;DR: In this paper, a summary, comparison and evaluation of the different active battery equalization methods, providing a table that compares them, which is helpful to select the suitable equalization method depending on the application.
Proceedings ArticleDOI
Passive and active battery balancing comparison based on MATLAB simulation
TL;DR: In this article, a review and comparison between the different cell balancing topologies for battery string based on MATLAB/Simulink® simulation is presented, according to circuit design, balancing simulation, practical implementations, application, balancing speed, complexity, cost, size, balancing system efficiency, voltage/current stress, etc.
Journal ArticleDOI
“Time Shared Flyback Converter” Based Regenerative Cell Balancing Technique for Series Connected Li-Ion Battery Strings
Abusaleh M. Imtiaz,Faisal Khan +1 more
TL;DR: In this paper, a cell voltage equalizer circuit for future plug-in hybrid electric vehicles (PHEV) or renewable energy storage is proposed, which is based on a time shared flyback converter, and any number of series connected cells in a string could be used without any apparent issues ensuring good modular architecture.
Journal ArticleDOI
High-Efficiency Modular High Step-Up Interleaved Boost Converter for DC-Microgrid Applications
TL;DR: In this paper, a modular interleaved boost converter is proposed by integrating a forward energy-delivering circuit with a voltage-doubler to achieve high step-up ratio and high efficiency for dc-microgrid applications.
References
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Journal ArticleDOI
Extension of battery life via charge equalization control
TL;DR: A straightforward means of embedding equalization within an outer-loop supervisory control that maintains a fast charging rate while providing overall protection against overcharging is briefly described.
Proceedings ArticleDOI
Individual cell voltage equalizers (ICE) for reliable battery performance
TL;DR: The individual cell voltage equalizer (ICE) as discussed by the authors is a two-terminal voltage-controlled current shunt that provides each cell with an alternate current path for string float current.
Proceedings ArticleDOI
Equalization of valve-regulated lead-acid batteries: issues and life test results
S. West,P.T. Krein +1 more
TL;DR: In this paper, the results of accelerated life testing are presented to evaluate equalization requirements and to compare passive and active equalization approaches for valve-regulated lead-acid (VRLA) batteries.
Journal ArticleDOI
Equalization of EV and HEV batteries with a ramp converter
T. Gottwald,Z. Ye,T. Stuart +2 more
TL;DR: In this article, an equalizer that is implemented with a high frequency, soft switching converter that corrects this imbalance is described, and experimental results are presented for a pack of 27 batteries.
Journal ArticleDOI
Dynamic equalization during charging of serial energy storage elements
TL;DR: In this article, a shunt converter is activated to divert current around a cell, thus maintaining it at a threshold voltage V/sub A/s at a constant terminal voltage, and the diverted current is returned to the charging bus and appears as an additional charging current to the source.