Article
Chemistry, Analytical
Kuo-Ching Tseng, Hao-Shiang Huang, Chun-An Cheng
Summary: An energy-storage scheme using hierarchical equalization charging topology for a series-connected battery system is proposed. The system combines an equalizer-within module (EWM) and an equalizer between the modules (EBM) to achieve rapid charging balance among a large number of cells. Experimental results with 12 LiFePO4 batteries show a 50% improvement in reducing battery voltage deviation with the proposed scheme.
Article
Green & Sustainable Science & Technology
Xue Lyu, Dominic Gross, Zhao Xu, Zhaoyang Dong, Youwei Jia
Summary: This paper proposes a control architecture that leverages the inherent regulation capabilities of wind turbines to minimize system-wide balancing costs. By optimizing wind power generation profiles at a system level, the proposed method effectively alleviates system balancing costs.
IET RENEWABLE POWER GENERATION
(2021)
Article
Engineering, Environmental
Shixiong Cao, Zhexi Liu, Weiming Li, Junli Xian
Summary: This article discusses the balance between ecological conservation and economic development, emphasizing how to maximize the benefits for both humans and the environment in promoting sustainable development. It also mentions the risk of excessive conservation creating rather than eliminating poverty, and examines China's ecological restoration achievements and the unforeseen negative consequences that accompanied them.
Article
Energy & Fuels
Bibin Pattavathi, Vishnu Surendran, Subalakshmi Palani, Manikoth M. Shaijumon
Summary: Dual ion batteries (DIBs) are popular energy storage devices due to high potential and low cost. Developing a generalized model for active mass balancing remains a challenge. In this study, we created an experimental data-driven deep neural network model for mass balancing and cell optimization of a graphite-graphite lithium DIB. The model can predict the performance of the full cell under various conditions, allowing for accelerated development of energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Automation & Control Systems
Ilai Bistritz, Nicholas Bambos
Summary: This paper introduces a consensus-based algorithm for cell balancing that does not rely on the electrochemical model of the battery, but instead utilizes online SOC estimates for sequential balancing decisions. The algorithm is proven to equalize the SOC of all cells with high probability, even under noisy SOC estimates, and is shown to be reliable and effective through simulations.
IEEE TRANSACTIONS ON CONTROL OF NETWORK SYSTEMS
(2021)
Article
Computer Science, Information Systems
Kun-Che Ho, Yi-Hua Liu, Song-Pei Ye, Guan-Jhu Chen, Yu-Shan Cheng
Summary: This paper studies seven types of SC-based BEs and compares their performance through statistical analysis based on MATLAB simulation. Mathematical models describing charge-discharge behaviors are derived, and a summary of circuit design complexity, balancing speed, and practical implementation options for these seven topologies is provided.
Article
Engineering, Multidisciplinary
Emre Gures, Ibraheem Shayea, Muntasir Sheikh, Mustafa Ergen, Ayman A. El-Saleh
Summary: This paper proposes a mobility load balancing algorithm that prioritizes millimeter-wave (mmWave) cells in target cell selection and user association to provide load balancing in 5G HetNets and improve overall system performance. The algorithm considers the load level of cells and reference signal received power (RSRP), and applies different handover procedures depending on the serving and target cell types. Simulation results show significant enhancements in network performance compared to existing load balancing algorithms in terms of load level, throughput, spectral efficiency, and call dropping ratio.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Automation & Control Systems
Weizhong Wang, Matthias Preindl
Summary: This article proposes a conduction-loss-based variable frequency modulation method to increase the system efficiency of dual-active bridge topologies. By varying the operating frequency, the conduction losses can be reduced, and the proposed control strategy performs better under low-load conditions.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Energy & Fuels
Xiaobing Zhang, Guohua Zhou, Shuyi Liu
Summary: Due to high voltage stress, series parallel switched-capacitor (SPSC) equalizers have low reliability. To reduce the voltage stress, this paper proposes two switched-capacitor (SC) equalizers using hybrid balancing paths. Balancing paths among cells are used for energy transfer and balancing paths among substrings improve balancing speed. The proposed equalizers are decomposed into SC balancing units and graph networks for simplified analysis. A modularized method is also proposed for high voltage applications to further decrease voltage stress. Simulation and experimental results validate the proposed equalizers' effectiveness.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Electrical & Electronic
Lucas Koltermann, Kevin Jacque, Jan Figgener, Sebastian Zurmuehlen, Dirk Uwe Sauer
Summary: The energy transition in the electrical energy supply sector is resulting in an increasing share of fluctuating renewable energy sources in the power grid. The provision of frequency containment reserve creates an imbalance in the balancing groups, and this work provides a simulation model to examine this energetic imbalance. The results show that battery storage operators can benefit from the provision of frequency containment reserve, with additional profits varying between 302 euro and 1,068 euro per MW per month.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2022)
Article
Energy & Fuels
Nikolay Vikhorev, Andrey Kurkin, Dmitriy Aleshin, Danil Ulyanov, Maksim Konstantinov, Andrey Shalukho
Summary: The article focuses on solving the charge equalization problem of multi-element batteries with rated voltage up to 1000 V, operating in dynamic modes. It proposes a method that actively controls the balancing circuit based on the real cell voltage deviation from the reference value. Simulink models were used to analyze the performance and accuracy of the proposed balancing method, showing a 1.43 times improvement in accuracy compared to classical methods. The proposed method is promising for energy storage systems based on multi-element batteries for high-power loads.
Article
Energy & Fuels
Dongho Lee, Juhyeon Jeon, Sangwook Han
Summary: This paper proposes a near-field cell balancing method for batteries of higher capacity and power. The method utilizes wireless power transfer to balance battery cells, offering higher efficiency than conventional passive approaches and faster equalization than active approaches. This method is designed to meet the increasing demand for faster cell balancing associated with high-capacity and high-power batteries.
Article
Energy & Fuels
Md Ohirul Qays, Yonis Buswig, Md Liton Hossain, Md Momtazur Rahman, Ahmed Abu-Siada
Summary: This paper presents a new balancing approach for parallel LiFePO4 battery cells using a Backpropagation Neural Network (BPNN) based technique to develop a Battery Management System (BMS), which can assess the charging status of all cells and control its operations through a DC/DC Buck-Boost converter. Simulation results show that the proposed approach effectively balances the energy stored in parallel-connected battery cells with a state of charge (SoC) estimation error of only 1.15%.
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS
(2021)
Article
Automation & Control Systems
Fulin Liu, Runmin Zou, Yonglu Liu, Yun Wang
Summary: This article proposes a modular battery equalizer based on phase-shift modulation, which can effectively improve the circuit extensibility and control flexibility of equalizers for long series-connected battery strings. The LC resonant converters with synchronous rectification are employed as the automatic cell-level equalizer, realizing any-cells-to-any-cells equalization and soft-switching operation. The fast equalization between modules is achieved by adjusting the phase shift of driving signals.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Energy & Fuels
Enrique D. Festijo, Drandreb Earl O. Juanico, Paul V. Nonat, Xyrus Galapia, Kirby Milovi S. Malab
Summary: The lead-acid battery is widely used and economically advantageous in various applications. Existing state of health (SoH) estimation techniques rely on invasive measurements, while non-invasive methods can provide accurate SoH estimation, supporting seamless operation and extended battery life.
Article
Engineering, Electrical & Electronic
Fernando Gonzalez-Hernando, Jon San-Sebastian, Manuel Arias, Alejandro Rujas, Francesco Iannuzzo
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2020)
Article
Computer Science, Information Systems
Maria R. Rogina, Alberto Rodriguez, Aitor Vazquez, Diego G. Lamar, Marta M. Hernando
Article
Engineering, Electrical & Electronic
Daniel G. Aller, Diego G. Lamar, Pablo F. Miaja, Juan Rodriguez, Javier Sebastian
Summary: Visible light communication (VLC) utilizes LEDs for information transmission, but modifying the LED driver stage can lead to decreased power efficiency. Current research on VLC mainly focuses on communication tasks, with limited work on improving power efficiency. This article proposes a high-efficiency LED driver based on the outphasing technique, achieving high signal generation efficiency and overall efficiency.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Computer Science, Information Systems
Alberto Rodriguez, Javier Sebastian, Diego G. Lamar, Marta M. Hernando, Iban Ayarzaguena, Igor Larrazabal, David Ortega, Jose M. Bermejo, Francisco Vazquez
Summary: This paper presents a thorough study of the static behavior of the single active bridge (SAB) converter in different conduction modes. The study focuses on describing the conduction modes and analyzing the differences compared to similar DC/DC converters. A design guide is proposed, and the performance of different designs is compared. The theoretical study, different designs, and predicted operation of the SAB are validated through simulation and experimental results.
Article
Engineering, Electrical & Electronic
Juan Rodriguez, Juan R. Garcia-Mere, Daniel G. Aller, Javier Sebastian
Summary: Envelope tracking is a well-known RF technique that addresses the efficiency problem of linear power amplifiers in wireless communication transmitters. This article proposes a novel multilevel converter that can use low breakdown voltage transistors and exhibits better switching behavior.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Social Sciences, Interdisciplinary
Sandra Girbes-Peco, Javier Sebastian, Xose Pedro Rodriguez-Alvarez, Marta Fontanals, Gerard Campeny, Bruno Gomez de Soler, Marta Soler
Summary: Meaningful citizen participation in research projects can increase the societal impact of science, and co-creation processes help align research with societal needs. While there have been significant advances in citizen participation in science, there are still challenges limiting citizen interaction with scientific creations. This study analyzes co-creation processes employed by projects that have demonstrated societal impact, providing examples from different scientific areas and examining the characteristics and implications of these successful co-creation processes.
INTERNATIONAL AND MULTIDISCIPLINARY JOURNAL OF SOCIAL SCIENCES-RIMCIS
(2022)
Article
Chemistry, Analytical
Juan R. Garcia-Mere, Juan Rodriguez, Diego G. Lamar, Javier Sebastian
Summary: This study explores the use of Class D Switching-Mode Power Amplifiers (SMPAs) to improve the efficiency of Visible Light Communication (VLC) systems, and a power-efficient VLC transmitter for short-range and low-speed applications was built and evaluated.
Article
Engineering, Electrical & Electronic
Duberney Murillo-Yarce, Carlos Restrepo, Diego G. Lamar, Javier Sebastian
Summary: This article presents a general method to study multiple discontinuous conduction modes (DCMs) in multidiode and multi-inductor converters. The method involves determining the number of DCMs and creating an n-dimensional space called k-space to describe the converter operation. It also identifies the borders between conduction modes and provides experimental verification.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Abraham Lopez, Pablo Fernandez Miaja, Manuel Arias, Arturo Fernandez
Summary: Latching current limiters (LCLs) provide individual overcurrent protection to payloads protecting the satellite power bus. This article presents a complete LCL design based on N-MOSFETs and explores the possibility of using silicon carbide (SiC).
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Computer Science, Information Systems
Duberney Murillo-Yarce, Carlos Restrepo, Diego G. Lamar, Marta M. Hernando, Javier Sebastian
Summary: This paper investigates the discontinuous conduction modes (DCMs) of modified versions of SEPIC, Cuk, and Zeta converters. By adding an extra diode to the classical versions of these converters, converters with multiple DCMs are obtained. The 4 conduction modes are exhaustively studied, including the calculations of voltage conversion ratios and equations of the curves defining the boundaries between conduction modes. The theoretical predictions are verified experimentally through a reconfigurable converter prototype.
Article
Engineering, Electrical & Electronic
Juan Rodriguez, Juan R. Garcia-Mere, Diego G. Lamar, Javier Sebastian
Summary: Visible light communication (VLC) is a promising technology that uses high-brightness light-emitting diodes (HB-LEDs) for both lighting and communication. Traditional VLC drivers with linear power amplifiers (LPAs) have low efficiency, while VLC drivers based on switching-mode power converters (SMPCs) have been proposed to overcome this limitation. This study introduces a new version of the ripple-modulation (RM) technique that can be applied to single-phase buck converters, reducing the complexity of the power stage and improving efficiency. A prototype of a ripple-modulated buck converter was built, achieving a bit rate of up to 1.25 Mb/s, a communication range of 100 cm, and a peak efficiency of 94%.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Proceedings Paper
Energy & Fuels
Alexis A. Gomez, Alberto Rodriguez, Marta M. Hernando, Diego G. Lamar, Javier Sebastian, Iban Ayarzaguena, Jose Manuel Bermejo, Igor Larrazabal, David Ortega, Francisco Vazquez
Summary: This paper provides a brief static analysis of the Single Active Bridge, a unidirectional isolated DC-DC converter. It proposes a control strategy that extends the soft-switching capabilities and performs current analysis and comparative results.
2022 24TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'22 ECCE EUROPE)
(2022)
Proceedings Paper
Energy & Fuels
Alexis A. Gomez, Alberto Rodriguez, Marta M. Hernando, Diego G. Lamar, Javier Sebastian, Iban Ayarzaguena, Jose Manuel Bermejo, Igor Larrazabal, David Ortega, Francisco Vazquez
Summary: This article presents the average small signal model of the Single Active Bridge (SAB) converter and analyzes its behavior in different conduction modes. The results are confirmed through simulations.
2022 24TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'22 ECCE EUROPE)
(2022)
