scholarly journals Minimizing the Lead-Acid Battery Bank Capacity through a Solar PV - Wind Turbine Hybrid System for a high-altitude village in the Nepal Himalayas

2014 ◽  
Vol 57 ◽  
pp. 1516-1525 ◽  
Author(s):  
Zahnd Alex ◽  
Angel Clark ◽  
Wendy Cheung ◽  
Linda Zou ◽  
Jan Kleissl
Keyword(s):  
Wind Turbine ◽  
High Altitude ◽  
Hybrid System ◽  
Solar Pv ◽  
Lead Acid Battery ◽  
Battery Bank ◽  
Lead Acid

scholarly journals Opportunity for Improving Lead-Acid Battery Management of Photovoltaic-Genset-Battery Hybrid Power Systems Based on Measured Field Data

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2237 ◽  
Author(s):  
Andrew Swingler ◽  
Jordan Torrealba
Keyword(s):  
Power System ◽  
Winter Season ◽  
Management Approach ◽  
Battery Management ◽  
Lead Acid Battery ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Battery Capacity ◽  
Battery Bank ◽  
Lead Acid

In this communication, the measured behaviour of a lead-acid battery bank within a stand-alone residential solar photovoltaic (PV)-genset-battery hybrid power system in Canada is presented and discussed. In order to capture rare field-based battery performance data, a newly commissioned lead-acid battery bank was equipped with a battery monitoring device capable of logging voltage, current, temperature and amp-hours every 30 s for the life of the battery. The measured data captures a severe loss of battery capacity due to a combination of short-term deep discharge and extended partial state of charge operation—conditions not unusual during winter season PV-genset-battery hybrid power system operation. Subsequent manual override of the system control set points to encourage gradual battery overcharge are shown to recover the lead-acid battery bank’s performance over the following three months. Limitations of the power conversion system’s battery management approach are discussed and a novel closed loop control system for improving lead-acid based PV-genset-battery hybrid system performance is rationalized and proposed for further research.

Performance and Cost Analysis of Lithium-Ion Battery for Powering Off-Grid Telecoms Base Stations in Africa

2019 ◽  
Vol 43 ◽  
pp. 101-111
Author(s):  
Doudou Nanitamo Luta ◽  
Atanda K. Raji
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
State Of Charge ◽  
Base Stations ◽  
Lead Acid Battery ◽  
Initial Current ◽  
Battery Bank ◽  
Diesel Generators ◽  
Acid Unit ◽  
Lead Acid

Most African remote telecoms base stations are powered from diesel generators, however, these generators are losing attractiveness due to their less reliability in addition to high operational and maintenance costs. Over 65% of the loss of telecom services observed in remote areas are caused by outages resulting from diverse types of failures that these generators can suffer, on top of their impacts on the environment. As alternative, off-grid renewable energy systems are often employed in place of diesel generators due to their capability to provide reliable electricity at an acceptable cost. This study proposes an off-grid system based on PV generators and backup energy storage consisting of lithium-ion batteries as an extended solution for powering remote telecom base stations in Africa. Modelling and simulation is performed using Matlab/Simulink environment. The findings showed better characteristics of lithium-ion battery bank as compared to lead-acid unit; lithium-ion battery bank displayed higher initial current and voltage over lead-acid battery bank. Moreover, when, both battery banks reached 50 % of their state of charge, lithium-ion bank current was still higher than that of lead-acid bank. In the same vein, lithium-ion battery bank presented a slower discharge time than lead-acid battery bank on top higher values at 50 % and 70% state of charges. Lastly, the state of charge of the lead-acid battery at the end of the simulation was 50 %, while that of the lithium-ion battery bank was around 60 %.

scholarly journals Modelling, Parameter Identification, and Experimental Validation of a Lead Acid Battery Bank Using Evolutionary Algorithms

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2361 ◽  
Author(s):  
H. Ariza Chacón ◽  
Edison Banguero ◽  
Antonio Correcher ◽  
Ángel Pérez-Navarro ◽  
Francisco Morant
Keyword(s):  
Particle Swarm Optimization ◽  
Particle Swarm ◽  
Cuckoo Search ◽  
Lead Acid Battery ◽  
Swarm Optimization ◽  
Battery Modeling ◽  
Battery Lifetime ◽  
Battery Model ◽  
Battery Bank ◽  
Lead Acid

Accurate and efficient battery modeling is essential to maximize the performance of isolated energy systems and to extend battery lifetime. This paper proposes a battery model that represents the charging and discharging process of a lead-acid battery bank. This model is validated over real measures taken from a battery bank installed in a research center placed at “El Chocó”, Colombia. In order to fit the model, three optimization algorithms (particle swarm optimization, cuckoo search, and particle swarm optimization + perturbation) are implemented and compared, the last one being a new proposal. This research shows that the identified model is able to estimate real battery features, such as state of charge (SOC) and charging/discharging voltage. The comparison between simulations and real measures shows that the model is able to absorb reading problems, signal delays, and scaling errors. The approach we present can be implemented in other types of batteries, especially those used in stand-alone systems.

scholarly journals Modeling of Photovoltaic MPPT Lead Acid Battery Charge Controller for Standalone System Applications

2020 ◽  
Vol 182 ◽  
pp. 03005
Author(s):  
Rodney H.G. Tan ◽  
Chee Kang Er ◽  
Sunil G. Solanki
Keyword(s):  
Maximum Power ◽  
Maximum Point ◽  
Solar Pv ◽  
Lead Acid Battery ◽  
Pv System ◽  
Photovoltaic Panel ◽  
Battery Charge ◽  
Pv Panel ◽  
Charging Strategy ◽  
Lead Acid

This paper presents the circuitry modeling of the solar photovoltaic MPPT lead-acid battery charge controller for the standalone system in MATLAB/Simulink environment. A buck topology is utilized as a DC-DC converter for the charge controller implementation. The maximum power of the photovoltaic panel is tracked by the Perturb and Observe MPPT algorithm. The battery charge controller charges the lead-acid battery using a three-stage charging strategy. The three charging stages include the MPPT bulk charge, constant voltage absorption charge, and float charge stage. The performance analysis of the model is carried out in the following aspects, there are MPPT tracking performance, battery charging performance and overall charge controller efficiency performance are benchmarked with commercial MPPT charge controller for validation. The performance result shows that the MPPT is capable to track to the PV panel maximum point at any solar irradiance variation within 0.5 seconds with maximum power tracking efficiency up to 99.9 %. The three-stage charging strategy also successfully demonstrated. The overall charge controller average efficiency achieved up to 98.3 % which matches many high end commercial solar PV MPPT charge controller product specifications. This validated model contributes to a better sizing of PV panel and battery energy storage for the small and medium standalone PV system.

scholarly journals Contactless power transfer system for sealed lead acid battery charging

2017 ◽  
Vol 5 (1) ◽  
pp. 20-26 ◽  
Author(s):  
Gautam Rituraj ◽  
Brijesh Kumar Kushwaha ◽  
Praveen Kumar
Keyword(s):  
Constant Current ◽  
Optimum Operating ◽  
Transfer System ◽  
Control Parameters ◽  
Power Transfer ◽  
Constant Voltage ◽  
Lead Acid Battery ◽  
Battery Bank ◽  
Contactless Power Transfer ◽  
Lead Acid

In this paper, an experimental study is carried out while charging the sealed lead acid battery bank using a series-parallel (SP) compensated contactless power transfer (CPT) system. Constant current (CC) and constant voltage (CV) modes are used for charging the battery bank. An expression of optimum operating frequency is derived to maintain the maximum compensated coil efficiency throughout the load variation in charging process. An experimental setup of SP compensated CPT system is built for charging the battery bank. The variation of compensated coil efficiency and the load phase angle with respect to different operating frequencies in CC and CV modes is verified with the measurement. Based on the analysis, the control parameters are identified.

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