Comparison of common and combined state of charge estimation methods for VRLA batteries

Galád, Martin; Špánik, Pavol; Cacciato, M.; Nobile, Giovanni

doi:10.1109/elektro.2016.7512069

Cited by 21 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, NPC increased from $107,637 to $114,274. However, researchers have recommended that the SOC min not be set to an extremely low value to avoid damaging the storage bank by excessive discharge [62][63][64][65].…”

Section: Battery Minimum Socmentioning

confidence: 99%

Energy Management and Optimization of a PV/Diesel/Battery Hybrid Energy System Using a Combined Dispatch Strategy

et al. 2019

View full text Add to dashboard Cite

In recent years, the concept of hybrid energy systems (HESs) is drawing more attention for electrification of isolated or energy-deficient areas. When optimally designed, HESs prove to be more reliable and economical than single energy source systems. This study examines the feasibility of a combined dispatch (CD) control strategy for a photovoltaic (PV)/diesel/battery HES by combining the load following (LF) strategy and cycle charging (CC) strategy. HOMER software is used as a tool for optimization analysis by investigating the techno-economic and environmental performance of the proposed system under the LF strategy, CC strategy, and combined dispatch CD strategy. The simulation results reveal that the CD strategy has a net present cost (NPC) and cost of energy (COE) values of $110,191 and $0.21/kWh, which are 20.6% and 4.8% lower than those of systems utilizing the LF and CC strategies, respectively. From an environmental point of view, the CD strategy also offers the best performance, with CO 2 emissions of 27,678 kg/year. Moreover, the results show that variations in critical parameters, such as battery minimum state of charge, time step, solar radiation, diesel price, and load growth, exert considerable effects on the performance of the proposed system. Sustainability 2019, 11, 683 2 of 26 different energy sources to produce a hybrid energy system (HES), which can solve reliability problems and provide an environmentally friendly solution [7][8][9]. Various power sources and storages, such as diesel generators, batteries, and supercapacitors, should be integrated into HESs to improve system stability and smooth out fluctuations [10,11].Sustainability 2018, 10, x FOR PEER REVIEW 2 of 29 problems and provide an environmentally friendly solution [7][8][9]. Various power sources and storages, such as diesel generators, batteries, and supercapacitors, should be integrated into HESs to improve system stability and smooth out fluctuations [10,11]. Figure 2. Commonly used approaches for energy management strategies [14]. Sustainability 2019, 11, 683 3 of 26Although the non-dispatchable RESs necessitate complex systems modeling, they are themselves simple to model without the need for control logic, in which the power is merely produced in direct response to the available renewable energy resources. On the other hand, the dispatchable components, such as the generator and battery, are more difficult to model because they must be controlled to achieve matching of demand and supply properly, and to compensate for the intermittency of the non-dispatchable RESs [16,17]. "Should a generator charge the battery or should excess solar production be responsible for charging the battery only and the generator used only to satisfy the load?" This question has led to some rules that manage the operation of generator and battery energy storage. The load following (LF) and cycle charging (CC) dispatch strategies are used to control generator operation and battery energy storage. Under the LF strategy, a generator produces only e...

show abstract

Section: Battery Minimum Socmentioning

confidence: 99%

Energy Management and Optimization of a PV/Diesel/Battery Hybrid Energy System Using a Combined Dispatch Strategy

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The ACR is incremented or decremented by one with each underflow or overflow of the pre-scaler, so that integration time can be effectively scaled. It is also possible to improve such circuitry by implementation of sigma-delta ADC for voltage monitoring that enables to apply voltagebased methods for SOC estimation [9], [10].…”

Section: A Current-based Methodsmentioning

confidence: 99%

Electronically Isolated Measuring Circuit for Multicell Traction Battery Modules Identifying State of Charge (SOC) Values

Pipiska¹,

Frivaldský²,

Danko³

et al. 2019

ELEKTRON ELEKTROTECH

View full text Add to dashboard Cite

Paper focuses on the topic related to State of Charge (SOC) estimation of the battery modules. The design issues of the electronic circuit suited for very accurate voltage and current measurement used for evaluation of the SOC parameters of battery module (NexSys 12 V) are presented. The SOC evaluation is not described here, but the principles are based on the open-circuit voltage measurement in combination with the coulomb counting method. Both methods are considered within the practical design of the measuring circuit of traction lead-acid batteries connected in series (3 cells). The circuit proposal is verified by the simulation model and consequently by the experimental measurement. Mutual comparisons are done for each battery within the module. The results show a very high accuracy between the simulation and measurement, while the relative tolerance varies from - 7 % to 1 % within wide measuring ranges.

show abstract

“…However, it should be noted that the research of circuit topologies of individual stages of the mentioned concept is constantly improving and being perfected. Our discussion concerns a circuit solution, but also a technological one, specifically in terms of the production of semiconductor elements or magnetic components [6][7][8][9]. If we now focus specifically on circuit solutions, we will deal in more detail with the possibilities of solving the input element, i.e., the PFC converter.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficiency Performance of 3-Phase, 6-Switch PFC Circuit Based on the Used 1.2 kV SiC Transistor

Hanko¹,

Frivaldský²,

Morgos³

2022

Electronics

View full text Add to dashboard Cite

This paper evaluates the performance of the high-voltage wide-band gap SiC power transistors equipped within 3-phase bridgeless 3 kW PFC circuit. The main aim of the study is the experimental evaluation of the dynamic properties and driving power requirements of the transistors, for which the parameters are similar. These are competing products from different manufacturers, while the selection criterion was the same type of package technology (7 pin D2PAK). Second, the effect of the transistor type was analysed in terms of the performance efficiency of the PFC circuit. Within the analysis, the driver circuit was constructed first, and adapted to high voltage transistor driving. During individual measurements, the driver remained the same, while gate-driver losses were analysed for individual transistors. The obtained results reveal differences related to requirements on driving power, as well as to the dynamics of transistors themselves. At the end of the paper, the evaluation of efficiency for different operating conditions of a constructed PFC converter is realized. The obtained results provide a more detailed overview of the dynamic properties of transistors and their impact on the resulting efficiency of the main circuit also in terms of driving requirements.

show abstract

Comparison of common and combined state of charge estimation methods for VRLA batteries

Cited by 21 publications

References 9 publications

Energy Management and Optimization of a PV/Diesel/Battery Hybrid Energy System Using a Combined Dispatch Strategy

Energy Management and Optimization of a PV/Diesel/Battery Hybrid Energy System Using a Combined Dispatch Strategy

Electronically Isolated Measuring Circuit for Multicell Traction Battery Modules Identifying State of Charge (SOC) Values

Evaluation of the Efficiency Performance of 3-Phase, 6-Switch PFC Circuit Based on the Used 1.2 kV SiC Transistor

Contact Info

Product

Resources

About