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Journal articles on the topic 'CHARGING AND DISCHARGING TIME'

Author: Grafiati

Published: 11 September 2023

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1

Gao, Song, Linyu Wang, Lei Guo, Zhifeng Qiu, and Yueshuang Bao. "A two-layer model to dispatch electric vehicles and wind power." MATEC Web of Conferences 309 (2020): 05015. http://dx.doi.org/10.1051/matecconf/202030905015.

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In this paper, the optimal charging and discharging schedules of electric vehicle (EV) are studied considering wind power under the condition of distribution network. In view of the uncertainty of EV charging-discharging demand and wind power output, the Markov decision process is adopted to model the randomness of supply and demand. Considering the dimensional disaster caused by dispatching a large number of EVs’ charging and discharging behavior in a centralized way, this paper proposes the two-layer dispatching model based on Markov decision process. First, the lower EV agents are responsib

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2

Wang, Ying, Gang Ma, Yixi Chen, Jian Zhang, and Jiashu Wang. "Multi-objective Charging and Discharging Optimization of Electric Vehicles in Time-divided period Based on SOC Evolution." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 13, no. 4 (2020): 595–601. http://dx.doi.org/10.2174/2352096512666190911144557.

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Background: With the increase of Electric Vehicle (EV), their disordered charging behaviour will put great pressure on the stable operation of the distribution network. Methods: In order to study the charging and discharging optimization scheme of EVs, firstly the EV charging and discharging load model is founded based on the Vehicle-to-Grid (V2G) technology. Results: According to the electricity price mechanism of Shanxi Province, the paper proposes a multi-target charging and discharging optimization for EVs based on the evolution of EV State of Charge (SOC) using the Modified Particle Swarm

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3

Hou, Xiao Fan, and Hong Bin Wu. "Space-Time Modeling of Plug-In Electric Vehicles." Advanced Materials Research 860-863 (December 2013): 1065–68. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1065.

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With the shortage of fossil energy and the worrying about environmental problems, renewable energy and electric-vehicle get rapid development. Against this background, an overview of power characteristic of electric vehicles is presented. Monte Carlo method is used to simulate the charging and discharging behavior of electric-vehicles, and the load curve of EVs of different scale is presented. It analyses the charging load characteristic in the uncoordinated charging mode and the discharging capacity curve in the vehicle-to-grid (V2G) mode in this paper. Under the software package of Visual C+

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Myat, Lwin Phone, Muhammad Shakeel Ahmad, Indra Neel Pulidindi, et al. "Effect of Polyethylene Glycol and Activated Carbon Macroparticles on Thermal Conductivity of Paraffin Wax for Thermal Storage Applications." Polymers 14, no. 19 (2022): 4181. http://dx.doi.org/10.3390/polym14194181.

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Low thermal conductivity is the major obstacle for the wide range utilization of phase change materials (PCMs), especially organic PCMs, for most practical applications in thermal engineering. This study investigates the potential of enhancing the charging and discharging rates of organic PCM (RT44HC) by introducing polyethylene glycol (PEG) and activated carbon macroparticles (ACMPs). Different concentrations of PEG and ACMPs ranging from 0.3 wt% to 2 wt% were tested separately. The optimized concentrations found were used as dual reinforcements to attain the highest possible thermal conducti

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Shi, Weijie, Qingrong Liu, Yingjun Ruan, Fanyue Qian, and Hua Meng. "Quantification and economic analysis of virtual energy storage caused by thermal inertia in buildings." Journal of Physics: Conference Series 2474, no. 1 (2023): 012002. http://dx.doi.org/10.1088/1742-6596/2474/1/012002.

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Abstract The virtual energy storage caused by the thermal inertia of the building is the property and can participate in the demand response. However, the quantification of this virtual energy storage part is not clear. To determine the energy flexibility potential of building virtual energy storage, quantitative indicators such as charging and discharging time, and charging and discharging energy are proposed. The building model was created using the building energy simulation software EnergyPlus, and the quantification of each performance indicator of the building’s virtual energy storage wa

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Zainurin, N. A., S. A. B. Anas, and R. S. S. Singh. "A Review of Battery Charging - Discharging Management Controller: A Proposed Conceptual Battery Storage Charging – Discharging Centralized Controller." Engineering, Technology & Applied Science Research 11, no. 4 (2021): 7515–21. http://dx.doi.org/10.48084/etasr.4217.

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This paper describes the development of a centralized controller to charge or discharge the battery storages that are connected to renewable energy sources. The centralized controller is able to assist, control, and manage the battery storage charging when excessive power is available from renewable energy sources. At the same time, the centralized controller also performs battery storage discharging when the connected load requires a power source, especially when the renewable energy sources are unavailable. Background studies regarding battery storage charging-discharging are presented in th

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Yu, Zicong, Ping Gong, Zhi Wang, Yongqiang Zhu, Ruihua Xia, and Yuan Tian. "Real-Time Control Strategy for Aggregated Electric Vehicles to Smooth the Fluctuation of Wind-Power Output." Energies 13, no. 3 (2020): 757. http://dx.doi.org/10.3390/en13030757.

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Electric vehicles (EVs) are flexible demand-side response resources in a power distribution system. Reasonable and orderly control of charging/discharging processes of aggregated EVs can improve their coordination and interaction with the distribution system and ensure its efficient and stable operation. Aiming at the problem that the fluctuation of wind power output may affect the stable operation of distribution system, a real-time control strategy for aggregated EVs to smooth the fluctuation of wind power is proposed. Firstly, considering the dispatchability of EVs, the charging/discharging

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8

Zhang, Shuting, Fuqiang Tian, Jieyi Liang, Jinmei Cao, and Zhaoliang Xing. "The Time, Electric Field, and Temperature Dependence of Charging and Discharging Currents in Polypropylene Films." Polymers 15, no. 14 (2023): 3123. http://dx.doi.org/10.3390/polym15143123.

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The insulating properties of polypropylene (PP) film play a very important role in the operating status of direct current (DC) support capacitors. Charging and discharging currents in PP film under high DC electric fields and temperatures correspond to charge transportation and accumulation, which significantly influence the electrical insulating properties of PP. In this paper, we have comprehensively studied the dependence of charging/discharging currents in PP film on time, electric field (150–670 kV/mm), and temperature (40–120 °C). The results showed that the charging current increased by

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9

Yan, Tao, Zhan Zhan Qu, Peng Fei Jia, Dong Hui, and Yun Jia Liu. "Establishment and Research of Semi-Physical and Real-Time Simulation Platform for V2G Electric Vehicle Charging System." Advanced Materials Research 1070-1072 (December 2014): 1625–31. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1625.

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Through constructing the battery system of electric vehicle, real-time simulation model of V2G charging converter topology, and combined with material object of hardware and software of V2G charger controller, establishing semi-physical simulation platform for V2G electric vehicle charging system based on RT-LAB real-time systems, which making use of real-time simulation platform to research the control mechanism of charger controller. The experimental results show that: the constructed semi-physical simulation platform is running well, its simulation results of charging and discharging proces

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10

Wang, Xuan Ze, Xu Qing Mo, Liang En Yang, Zhong Sheng Zhai, Wen Chao Liu, and Zhi Xiong. "A Kind of Resistance Capacitance Measurement Method Based on Time Constant." Advanced Materials Research 1037 (October 2014): 156–60. http://dx.doi.org/10.4028/www.scientific.net/amr.1037.156.

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This paper proposes a capacitance resistance measurement method based on time constant. Using the charging and discharging characteristics of the resistance and capacitance measures the value of the resistance and capacitance through a semi potential rise and fall time measurement. Theoretical analysis of the relationship between the value of the resistance and capacitance and the measuring time, designing the fast second charging and discharging method meeting the initial condition of charge and discharge, improving the measurement speed, expanding the measurement range of the resistance and

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11

Xing, Zhaoliang, Fuqiang Tian, Shaowei Guo, et al. "Charging and Discharging Current Characteristics of Polypropylene Film under Varied Electric Fields." Energies 15, no. 14 (2022): 5107. http://dx.doi.org/10.3390/en15145107.

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Charging and discharging current behavior under high DC electric field in polypropylene (PP) film is closely related to the charge transport and accumulation process, which has an important effect on the electrical insulating properties of PP. In this paper, the dependence of the charging and discharging current of polypropylene films on time and electric field has been comprehensively studied. The results showed that the transient and steady current values of the charging and discharging process increase with the increase of electric field. Dependence of the charging current on the electric f

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12

Zhou, Feng, Weizhen Shi, Xiaomei Li, Chao Yang, and Ting Hao. "Cooperative Game Cooperative Control Strategy for Electric Vehicles Based on Tariff Leverage." Energies 16, no. 12 (2023): 4808. http://dx.doi.org/10.3390/en16124808.

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To address the negative impact of large-scale disorderly grid connection of EVs on the stable operation of the power grid, a cooperative game cooperative control strategy for EVs based on tariff leverage is proposed, taking the grid-side and user-side economy as the objective function, taking into account the EV load state constraint, distribution grid power constraint, bi-directional charging and discharging pile power constraint, dynamic tariff constraint, and cooperative game members’ revenue constraint. A dynamic cooperative game model based on bi-directional charging and discharging piles

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13

Nursusanto, Usman, Khairunnisa' Khairunnisa', and Hartoyo Hartoyo. "Real Time Battery Monitoring Control in Mini Generating System." Jurnal Edukasi Elektro 6, no. 2 (2022): 96–104. http://dx.doi.org/10.21831/jee.v6i2.54299.

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ABSTRACTMini-generating systems such as PLTS utilize batteries as energy storage media. The increasing use of PLTS also adds to the problem of battery waste (B3). The battery monitoring tool is used to monitor the condition of PLTS batteries and used batteries. This research was conducted using the ADDIE method. Data collection techniques were carried out through literature study, observation, and practice. Research products are battery packs and BMS boxes. The error rate of BMS readings on the values of voltage, current, and temperature are 4.59%, 2.002% and 0.83%. The undervoltage reading er

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14

Liu, Hong Rui, and Chao Ying Xia. "An Active Equalizer for Serially Connected Lithium-Ion Battery Cells." Advanced Materials Research 732-733 (August 2013): 809–12. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.809.

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This paper proposes an equalizer for serially connected Lithium-ion battery cells. The battery cell with the lowest state of charge (SOC) is charged by the equalizer during the process of charging and discharging, and the balancing current is constant and controllable. Three unbalanced lithium-ion battery cells in series are selected as the experimental object by this paper. The discharging current under a certain UDDS and 20A charging current are used to complete respectively one time balancing experiment of discharging and charging to the three lithium-ion battery cells. The validity of the

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15

Fabrykiewicz, Maciej, and Janusz T. Cieśliński. "Effect of Tube Bundle Arrangement on the Performance of PCM Heat Storage Units." Energies 15, no. 24 (2022): 9343. http://dx.doi.org/10.3390/en15249343.

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The results of a comprehensive study on the charging and discharging of latent heat storage systems (LHSS) are presented. Multi-tube shell-and-tube units with variable layouts of tube bundles are examined. Two tube arrangements—in-line and staggered—are tested. A variable number of tubes and different tube positions in a bundle are investigated. Moreover, two pitch ratios are studied. Three commercially available substances are used as phase change materials (PCM). The results show that increasing the number of tubes reduces both the charging and discharging times. It is found that for a bundl

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16

Chen, Shuai, Chengpeng Jiang, Jinglin Li, Jinwei Xiang, and Wendong Xiao. "Improved Deep Q-Network for User-Side Battery Energy Storage Charging and Discharging Strategy in Industrial Parks." Entropy 23, no. 10 (2021): 1311. http://dx.doi.org/10.3390/e23101311.

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Battery energy storage technology is an important part of the industrial parks to ensure the stable power supply, and its rough charging and discharging mode is difficult to meet the application requirements of energy saving, emission reduction, cost reduction, and efficiency increase. As a classic method of deep reinforcement learning, the deep Q-network is widely used to solve the problem of user-side battery energy storage charging and discharging. In some scenarios, its performance has reached the level of human expert. However, the updating of storage priority in experience memory often l

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Mol, Jeroen, Mina Shahi, and Amirhoushang Mahmoudi. "Numerical Modeling of Thermal Storage Performance of Encapsulated PCM Particles in an Unstructured Packed Bed." Energies 13, no. 23 (2020): 6413. http://dx.doi.org/10.3390/en13236413.

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In this work, a numerical model to study phase transition in unstructured packed beds of phase change particles for latent heat thermal energy storage is presented and implemented into the open-source CFDEM® coupling program. The governing equations for both fluid and solid particles are discussed. The presented model is validated using experimental data. The validated model is used to study the effect of bed structure (e.g., using multiple sizes of particles and mixing of multiple configurations of particles) on the charging and discharging of PCM bed. It is found that using smaller particles

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18

Raghav, Geetanjali, Pankaj Kumar Sharma, Suresh Kumar, Rajesh Maithani, Alexis Iung, and Quentin Mercier. "Analysis of solar cooker with thermal storage for remote hilly areas: determination of heating and cooling characteristic time." Acta Innovations, no. 40 (September 30, 2021): 5–18. http://dx.doi.org/10.32933/actainnovations.40.1.

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Solar cooking finds a major application in rural areas of Uttarakhand, India, yet its utilization is still limited due to certain limitation such as intermittent nature of solar radiations. This drawback limits solar cooker in becoming a viable alternate solution of LPG and other pollution causing resources such as wood. In order to cater this problem a numerical analysis of box type solar cooker with storage is carried out. The energy stored in the storage material will keep the cooker warm up to the time when food is consumed. Charging and discharging time analysis is performed in with an ai

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19

Rahman, N. H. Abdul, A. M. Omar, E. H. Mat Saat, N. I. Ilham, M. Z. Hussin, and Yusrina Y. "Design and development of three stages maximum power tracking solar charge controller." Indonesian Journal of Electrical Engineering and Computer Science 18, no. 3 (2020): 1270. http://dx.doi.org/10.11591/ijeecs.v18.i3.pp1270-1278.

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<span>This paper presents the design of a Three Stages Maximum Power Point Tracking (MPPT) charge controller for improving the charging/discharging control of the battery. In this research, Buck Converter is used to regulate the voltage from the Photovoltaic (PV) module to the required voltage. This research is limited to Valve Regulated Lead Acid (VRLA) battery for 12V system voltage. The charge control algorithm envisages controlling the charging and discharging action in all the three stages of battery charging, bulk, absorption, and float. The idea is to control the battery charging

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20

Aljanad, Ahmed, Azah Mohamed, Tamer Khatib, Afida Ayob, and Hussain Shareef. "A Novel Charging and Discharging Algorithm of Plug-in Hybrid Electric Vehicles Considering Vehicle-to-Grid and Photovoltaic Generation." World Electric Vehicle Journal 10, no. 4 (2019): 61. http://dx.doi.org/10.3390/wevj10040061.

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Considering, the high penetration of plug-in electric vehicles (PHEVs), the charging and discharging of PHEVs may lead to technical problems on electricity distribution networks. Therefore, the management of PHEV charging and discharging needs to be addressed to coordinate the time of PHEVs so as to be charged or discharged. This paper presents a management control method called the charging and discharging control algorithm (CDCA) to determine when and which of the PHEVs can be activated to consume power from the grid or supply power back to grid through the vehicle-to-grid technology. The pr

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21

Wang, Wubin, Wenxi Yao, Wei Chen, Dong Chen, Zhen Ma, and Zhengyu Lu. "Directional DC Charge-Transfer Resistance on an Electrode–Electrolyte Interface in an AC Nyquist Curve on Lead-Acid Battery." Applied Sciences 10, no. 6 (2020): 1907. http://dx.doi.org/10.3390/app10061907.

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Both the frequency domain Nyquist curve of electrochemical impedance spectroscopy (EIS) and time domain simulation of DC equivalent first principle linear circuit (FPLCDCequ) are some of the fundamentals of lead-acid batteries management system design. The Nyquist curve is used to evaluate batteries’ state of health (SoH), but the curve does not distinguish charging/discharging impedances on electrode–electrolyte interfaces in the frequency domain. FPLCDCequ is used to simulate batteries’ terminal electrical variables, and the circuit distinguishes charging/discharging impedances on electrode–

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22

Lee, Jaehyun, Eunjung Lee, and Jinho Kim. "Electric Vehicle Charging and Discharging Algorithm Based on Reinforcement Learning with Data-Driven Approach in Dynamic Pricing Scheme." Energies 13, no. 8 (2020): 1950. http://dx.doi.org/10.3390/en13081950.

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In the smart grid environment, the penetration of electric vehicle (EV) is increasing, and dynamic pricing and vehicle-to-grid technologies are being introduced. Consequently, automatic charging and discharging scheduling responding to electricity prices that change over time is required to reduce the charging cost of EVs, while increasing the grid reliability by moving charging loads from on-peak to off-peak periods. Hence, this study proposes a deep reinforcement learning-based, real-time EV charging and discharging algorithm. The proposed method utilizes kernel density estimation, particula

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Shaaban, Mostafa F., Muhammad Ismail, Ehab F. El-Saadany, and Weihua Zhuang. "Real-Time PEV Charging/Discharging Coordination in Smart Distribution Systems." IEEE Transactions on Smart Grid 5, no. 4 (2014): 1797–807. http://dx.doi.org/10.1109/tsg.2014.2311457.

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Kosov, Daniel S. "Waiting time between charging and discharging processes in molecular junctions." Journal of Chemical Physics 149, no. 16 (2018): 164105. http://dx.doi.org/10.1063/1.5049770.

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Freitas, David Ciarlini, Hugerles Sales Silva, Edson Cavalcanti Neto, and Antonio Marcus Nogueira Lima. "Parameter estimation of a lead-acid battery model using genetic algorithm." Journal of Mechatronics Engineering 2, no. 1 (2019): 2. http://dx.doi.org/10.21439/jme.v2i1.23.

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Lead-Acid batteries models classifications are shown. The battery model used and its charging and discharging equations are shown. These equations are expanded to find the value of the time constant of this model, which is fixed at a given value. A genetic algorithm is applied to these expanded equations to estimate the value of the time constant. Some battery charging and discharging cycles are used for estimation and validation of the proposed system. A time constant other than the previously set value is found. A simulation study is used to demonstrate the feasibility of the proposed parame

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26

Fadl, Mohamed, and Philip Eames. "Thermal Performance Analysis of the Charging/Discharging Process of a Shell and Horizontally Oriented Multi-Tube Latent Heat Storage System." Energies 13, no. 23 (2020): 6193. http://dx.doi.org/10.3390/en13236193.

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In this study, the thermal performance of latent heat thermal energy storage system (LHTESS) prototype to be used in a range of thermal systems (e.g., solar water heating systems, space heating/domestic hot water applications) is designed, fabricated, and experimentally investigated. The thermal store comprised a novel horizontally oriented multitube heat exchanger in a rectangular tank (forming the shell) filled with 37.8 kg of phase change material (PCM) RT62HC with water as the working fluid. The assessment of thermal performance during charging (melting) and discharging (solidification) wa

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Chen, Lixing, and Hong Zhang. "Orderly Discharging Strategy for Electric Vehicles at Workplace Based on Time-of-Use Price." Mathematical Problems in Engineering 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/7025879.

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According to the parking features of electric vehicles (EVs) and load of production unit, a power supply system including EVs charging station was established, and an orderly discharging strategy for EVs was proposed as well to reduce the basic tariff of producer and improve the total benefits of EV discharging. Based on the target of maximizing the annual income of producer, considering the total benefits of EV discharging, the electric vehicle aggregator (EVA) and time-of-use (TOU) price were introduced to establish the optimization scheduling model of EVs discharging. Furthermore, an improv

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Zhang, Yanjun, Shuli Liu, Liu Yang, Xiue Yang, Yongliang Shen, and Xiaojing Han. "Experimental Study on the Strengthen Heat Transfer Performance of PCM by Active Stirring." Energies 13, no. 9 (2020): 2238. http://dx.doi.org/10.3390/en13092238.

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Latent heat storage has higher energy density, but most phase change materials (PCMs) have low thermal conductivity. Current research focuses on conduction dominated heat transfer mechanism to increase the heat transfer performance. However, convection also has important effects on promoting PCM melting and solidification processes. Therefore, an active stirring method with conduction dominated heat transfer mechanism was studied. A shell storage with stirrer inside was constructed and tested. Paraffin was selected as the PCM; the heat transfer fluid (HTF) was water. The results show that aver

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Zhang, Yu, Chen Fang, Jian Lin Yang, and Shao Peng Liu. "Study on the Regularity of EVs' Charging and Discharging Group Behaviors." Advanced Materials Research 860-863 (December 2013): 1173–80. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1173.

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The large scale application of EVs (electric vehicles) is an inevitable trend at home and abroad. When lots of EVs are plugged into the grid, the impact of their charging load on the grid is not negligible; while the development of V2G technology allows EVs to discharge to the grid, it provides an opportunity for improving the safety and economic operation of the grid. The paper models the specific behavior features of the bus and private EVs from the mileage, charging mode and charging time three aspects. MATLAB is used for programming, and EVs sample are randomly selected. The EVs charging a

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AlSharif, Arab, and Manohar Das. "A Piecewise Linear Time-Varying Model for Modeling the Charging and Discharging Processes of a Lithium-Ion Battery." International Journal of Handheld Computing Research 5, no. 2 (2014): 87–103. http://dx.doi.org/10.4018/ijhcr.2014040106.

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A piecewise linear, time-varying model for modeling the charging and discharging processes of Li-ion batteries is introduced in this paper. Such a model consists of a group of piecewise linear model segments, whose parameters are adapted online over time. Thus, the combined overall model is capable of modeling nonlinear time-varying processes, such as a Li-ion battery charging and discharging processes, quite well. Modeling results of both simulated test data and actual test data gathered from a high-power automotive-grade Li-ion cell are presented. The close matches between actual and model-p

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Hussain, Shahid, Ki-Beom Lee, Mohamed A. Ahmed, Barry Hayes, and Young-Chon Kim. "Two-Stage Fuzzy Logic Inference Algorithm for Maximizing the Quality of Performance under the Operational Constraints of Power Grid in Electric Vehicle Parking Lots." Energies 13, no. 18 (2020): 4634. http://dx.doi.org/10.3390/en13184634.

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The widespread adoption of electric vehicles (EVs) has entailed the need for the parking lot operators to satisfy the charging and discharging requirements of all the EV owners during their parking duration. Meanwhile, the operational constraints of the power grids limit the amount of simultaneous charging and discharging of all EVs. This affects the EV owner’s quality of experience (QoE) and thereby reducing the quality of performance (QoP) for the parking lot operators. The QoE represents a certain percentage of the EV battery required for its next trip distance; whereas, the QoP refers to t

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Zou, Peng, Jian Wen Wu, Bin Zhang, and Jun Liang Zhou. "Research on Switching Technology of Aviation 270V DC System." Applied Mechanics and Materials 740 (March 2015): 442–45. http://dx.doi.org/10.4028/www.scientific.net/amm.740.442.

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In this article, large capacitor charging and discharging experimental system is utilized to generate 270V DC-current by pre-charging to the large capacitor and discharging. Interrupter switching experiments of 540A, 1800A are done in aviation environment, and results of arcing breakdown manner are analyzed and explained. The experiment results indicate that 270V DC-current and arc in aviation environment can be broken by the way of using IGBT in appropriate time; In aviation environment, the breaking capability can be improved, and arcing breaking manner can be used to estimate the arc time c

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Lee, Jeong, Jun-Mo Kim, Junsin Yi, and Chung-Yuen Won. "Battery Management System Algorithm for Energy Storage Systems Considering Battery Efficiency." Electronics 10, no. 15 (2021): 1859. http://dx.doi.org/10.3390/electronics10151859.

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Aging increases the internal resistance of a battery and reduces its capacity; therefore, energy storage systems (ESSs) require a battery management system (BMS) algorithm that can manage the state of the battery. This paper proposes a battery efficiency calculation formula to manage the battery state. The proposed battery efficiency calculation formula uses the charging time, charging current, and battery capacity. An algorithm that can accurately determine the battery state is proposed by applying the proposed state of charge (SoC) and state of health (SoH) calculations. To reduce the initia

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Sausen, Jordan P., Alzenira R. Abaide, Juan C. Vasquez, and Josep M. Guerrero. "Battery-Conscious, Economic, and Prioritization-Based Electric Vehicle Residential Scheduling." Energies 15, no. 10 (2022): 3714. http://dx.doi.org/10.3390/en15103714.

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Advances in communication technologies and protocols among vehicles, charging stations, and controllers have enabled the application of scheduling techniques to prioritize EV fleet charging. From the perspective of users, residential EV charging must particularly address cost-effective solutions to use energy more efficiently and preserve the lifetime of the battery—the most expensive element of an EV. Considering this matter, this research addresses a residential EV charging scheduling model including battery degradation aspects when discharging. Due to the non-linear characteristics of charg

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Park, Yeonju, Soo Kim, Sila Jin, Sung Lee, Isao Noda, and Young Jung. "Investigation of the Phase Transition Mechanism in LiFePO4 Cathode Using In Situ Raman Spectroscopy and 2D Correlation Spectroscopy during Initial Cycle." Molecules 24, no. 2 (2019): 291. http://dx.doi.org/10.3390/molecules24020291.

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The phase transition of the LiFePO4 and FePO4 in Li-ion cell during charging-discharging processes in the first and second cycles is elucidated by Raman spectroscopy in real time. In situ Raman spectroscopy showed the sudden phase transition between LiFePO4 and FePO4. Principal component analysis (PCA) results also indicated that the structural changes and electrochemical performance (charge-discharge curve) are correlated with each other. Phase transition between LiFePO4 and FePO4 principally appeared in the second charging process compared with that in the first charging process. 2D correlat

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Wu, Jiang, Bo Zhang, Yibo Zhi, Minheng He, Penghui Shang, and Yufeng Qian. "Validation through Experiment and Simulation of Internal Charging–Discharging Characteristics of Polyimide under High-Energy Electron Radiation." Energies 15, no. 18 (2022): 6603. http://dx.doi.org/10.3390/en15186603.

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Due to the injection of energetic particles, such as electrons in space environment, the internal charging–discharging characteristics of spacecraft dielectrics need to be evaluated for the safety of spacecraft, and the evaluation results from experiments and simulations should be comparatively validated. An in-site pulsed electroacoustic (PEA) measurement system under high-energy electron radiation was established for evaluating the charging characteristics of thick plate samples about 3 mm, while a joint simulation method based on Geant4 and COMSOL was also proposed. The deposited charge dis

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Li, Peng, Zongguang Chen, Xuezhi Zhou, Haisheng Chen, and Zhi Wang. "Temperature Regulation Model and Experimental Study of Compressed Air Energy Storage Cavern Heat Exchange System." Sustainability 14, no. 11 (2022): 6788. http://dx.doi.org/10.3390/su14116788.

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The first hard rock shallow-lined underground CAES cavern in China has been excavated to conduct a thermodynamic process and heat exchange system for practice. The thermodynamic equations for the solid and air region are compiled into the fluent two-dimensional axisymmetric model through user-defined functions. The temperature regulation model and experimental study results show that the charging time determines the air temperature and fluctuates dramatically under different charging flow rates. The average air temperature increases with increasing charging flow and decreasing charging time, f

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Ono, Luis K., Sonia R. Raga, Shenghao Wang, Yuichi Kato, and Yabing Qi. "Temperature-dependent hysteresis effects in perovskite-based solar cells." Journal of Materials Chemistry A 3, no. 17 (2015): 9074–80. http://dx.doi.org/10.1039/c4ta04969a.

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Lin, Bo, Bissan Ghaddar, and Jatin Nathwani. "Electric vehicle routing with charging/discharging under time-variant electricity prices." Transportation Research Part C: Emerging Technologies 130 (September 2021): 103285. http://dx.doi.org/10.1016/j.trc.2021.103285.

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Kumar, Ravindra, and Sandip Chavan. "Numerical and Experimental Investigation of Thermal Behaviour for Fast Charging and Discharging of Various 18650 Lithium Batteries of Electric Vehicles." International Journal of Heat and Technology 40, no. 6 (2022): 1492–99. http://dx.doi.org/10.18280/ijht.400618.

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Fast charging and discharging are keen focus areas of electric vehicles (EVs) in order to reduce vehicle down time and support the variable load requirement. In EVs, mainly lithium batteries with various chemistry such as NCA (nickel cobalt aluminum oxides), LTO (lithium titanate oxide), LFP (lithium iron phosphate), LNO (lithium nickel oxide) and NMC (nickel manganese cobalt oxides) are used as energy storage system. Performance of lithium batteries varies with the chemistry and temperature of batteries along with surrounding conditions. More heat is generated during fast charging and dischar

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Albogamy, Fahad R., Ghulam Hafeez, Imran Khan, et al. "Efficient Energy Optimization Day-Ahead Energy Forecasting in Smart Grid Considering Demand Response and Microgrids." Sustainability 13, no. 20 (2021): 11429. http://dx.doi.org/10.3390/su132011429.

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In smart grid, energy management is an indispensable for reducing energy cost of consumers while maximizing user comfort and alleviating the peak to average ratio and carbon emission under real time pricing approach. In contrast, the emergence of bidirectional communication and power transfer technology enables electric vehicles (EVs) charging/discharging scheduling, load shifting/scheduling, and optimal energy sharing, making the power grid smart. With this motivation, efficient energy management model for a microgrid with ant colony optimization algorithm to systematically schedule load and

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Tria Valentina, Haninda, and Arif Nur Afandi. "Transformer Charger Design based on 12V CT Equipped Overcharge Protection." Frontier Energy System and Power Engineering 3, no. 2 (2021): 39. http://dx.doi.org/10.17977/um049v3i2p39-45.

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The need for electrical energy continues to increase and more and more equipment requires electrical energy as its main supply. The fulfillment of electrical energy can be generated by the battery. In the battery, there is a process of discharging and charging. The duration of discharging and charging the battery is affected by the capacity of the battery. Therefore, a charging device is needed for the battery charging process. The 12 V charger uses a CT transformer as a voltage reducer, then rectifies it using a diode. In the charging process, overcharge protection is provided that utilizes T

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Bentarzi, Hamid, Mahdi Abdenour LITOUFI, Nazim TAIR, and Tarek AZZOUNI. "A New Frame Work of Real-Time Charaterization Battery Platform." Algerian Journal of Signals and Systems 6, no. 4 (2021): 192–98. http://dx.doi.org/10.51485/ajss.v6i4.145.

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Batteries play an important role in the performance enhancement of power grids including renewable energy systems. In order to attain the rated service life and the longest possible run time of a battery, it is necessary to be monitored and maintained. This needs for an effective real-time characterization platform. Therefore, this paper presents a new frame work of a real-time battery monitoring system that will be able to provide the user with battery parameters as well as a recording file of the instantaneous variables values. To perform this task, a PC based platform associated with acquis

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Nuraliyev, Almukhan Kalpakbaevich, and Aziz Nasimovich Dzhabarov. "FEATURES OF THE METHOD OF CHARGING THE BATTERY BATTERY." INNOVATION IN THE OIL AND GAS INDUSTRY 2, no. 1 (2021): 43–47. http://dx.doi.org/10.26739/2181-1482-2021-1-7.

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The article is devoted to the consideration of methods and devices for reducing the charge time of a lead-acid battery. In addition, the device for accelerated charging of a battery with an asymmetric current based on the charge of discharge converters isproposed.Key words:method, charging, discharging, storage battery, asymmetric current, density, electrolyte

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Mao, Qianjun, Ning Liu, and Li Peng. "Numerical Investigations on Charging/Discharging Performance of a Novel Truncated Cone Thermal Energy Storage Tank on a Concentrated Solar Power System." International Journal of Photoenergy 2019 (January 27, 2019): 1–17. http://dx.doi.org/10.1155/2019/1609234.

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Developing a concentrated solar power (CSP) technology is one of the most effective methods to solve energy shortage and environmental pollution all over the world. Thermal energy storage (TES) system coupling with phase change materials (PCM) is one of the most significant methods to mitigate the intermittence of solar energy. In this paper, firstly, a 2D physical and mathematical model of a novel truncated cone shell-and-tube TES tank has been proposed based on enthalpy method. Secondly, the performance during the charging/discharging process of the truncated cone tank has been compared with

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Ismail, Muhammad Syukur Liffan Syahbana, and Reza Abdu Rahman. "Thermal Performance Assessment for an Active Latent Heat Storage Tank by Using Various Finned-Coil Heat Exchangers." International Journal of Heat and Technology 40, no. 6 (2022): 1470–77. http://dx.doi.org/10.18280/ijht.400615.

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Paraffin-based latent heat storage has a higher thermal capacity than sensible heat storage. Despite that, the actual implementation of paraffin as an active latent heat storage (ALHS) system is limited due to low charging and discharging rate with unequal temperature distribution as the impact of mushy region formation. The present study evaluates the finned-coil heat exchanger for the ALHS tank to overcome the related problems. Three finned-coil configurations are tested experimentally: straight-fin, branched-fin and height-fin. The evaluation uses the ALHS arrangement to assess each configu

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Wu, Juai, Shiyang Deng, Yuanmeng Zhu, et al. "A Case of Interdisciplinary Fusion under Dual Carbon Goal: Coordinated Carbon Reduction with Greenhouse Photovoltaics and Electric Vehicles." Applied Sciences 13, no. 4 (2023): 2410. http://dx.doi.org/10.3390/app13042410.

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Building a new type of power system is an important guarantee to support China’s “dual carbon” goal. Due to the inseparable relationship between industrial and agricultural production and electric energy utilization, there must be interdisciplinary integration to achieve the goal of “dual carbon”. The disciplines of horticulture and electric power are taken as examples in this paper to analyze the feasibility of carbon emission reduction through coordinating agricultural photovoltaic (PV) greenhouse and electric vehicle (EV) energy storage. Firstly, the mechanism of carbon emission difference

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Ouyang, Ming San, and Qing Tao She. "Research on the Charge and Discharge Control of the High-Capacity Lithium Battery Using in Escape Capsule." Applied Mechanics and Materials 556-562 (May 2014): 2054–57. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2054.

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The high-capacity lithium batteries are optimization in coal mine backup power supply. Their electricity properties directly affect their related equipment performance. So it is crucial importance for controlling lithium battery charge and discharge and understanding their characteristics. It puts forward design scheme of lithium-ion battery charging and discharging controller with STM32F103 chip. It includes DC/DC adopting full bridge phase shift high power switch, the sampling and processing circuit of voltage, current and temperature, charge and discharge control circuit, and software desig

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Li, Wen Cui, Yi Yang, Hao Zhang, Jing Xian Lv, and Xin Jian Shu. "Study on the Maintenance and Management of VRLA Battery." Applied Mechanics and Materials 644-650 (September 2014): 3902–5. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.3902.

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The paper introduced the basic characteristics, maintenance requirements and backward cell processing method of Valve Regulated Lead Acid Battery (VRLA) based on the practice of substation communication, elaborated the charge-discharge test battery requirements. This paper discussed the test of battery operation and maintenance, charge and discharge risk. Through the test methods of battery communication charging and discharging and the steps of analysis, we find out the possible dangerous points in processing of charging and discharging, and at the same time, we list the typical examples on s

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Tipasri, Wunvisa, Amnart Suksri, Karthikeyan Velmurugan, and Tanakorn Wongwuttanasatian. "Energy Management for an Air Conditioning System Using a Storage Device to Reduce the On-Peak Power Consumption." Energies 15, no. 23 (2022): 8940. http://dx.doi.org/10.3390/en15238940.

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To reduce the on-peak electrical power consumption, storage devices are widely performed with the help of an energy management system. According to IEA, residential air conditioning consumes 70% of the electricity, increasing by 4% every year. To minimize peak power consumption, thermal energy storage (TES) can be used to store cooled water for the air conditioning system. An efficient chilled water tank was designed and computationally investigated. Three-dimensional cylindrical tanks were simulated with seven different heights to diameter (H:D) ratios. At first, the temperature changes in a

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