A 21.17% improvement of the heat transfer performance is obtained when the total length of unequal-length fins is 18 mm. The present study is helpful to make further efforts to enhance heat transfer and energy storage of shell-and-tube latent heat thermal energy storage unit with unequal-length fins.
and the advantages of new energy electric vehicles rely on high energy storage density batteries and ecient and fast charg-ing technology. This paper introduces a DC charging pile for new energy electric vehicles. The DC charging pile can expand the charging power through multiple modular charging units in parallel to improve the charging speed.
In this paper, in the context of the large-scale application of new energy vehicles, we propose a method of using photovoltaic, energy storage and V2G technologies to solve …
Under net-zero objectives, the development of electric vehicle (EV) charging infrastructure on a densely populated island can be achieved by repurposing existing facilities, such as rooftops of wholesale stores and parking areas, into charging stations to accelerate transport electrification. For facility owners, this transformation …
This paper proposes a charging pile historical maintenance data based on cloud storage, as well as charging pile brand, model, environmental temperature and humidity indexes. …
The performance of electric vehicles has been recognized by most people but the biggest concerns at present are battery life and charging time. For this reason, Taiwanese charging brand Evalue has launched the highest-power charging pile in Taiwan at 480 kW to reduce car owners'' charging time with more power.
Many different types of electric vehicle (EV) charging technologies are described in literature and implemented in practical applications. This paper presents an overview of the existing and …
Many different types of electric vehicle (EV) charging technologies are described in literature and implemented in practical applications. This paper presents an overview of the existing and proposed EV charging technologies in terms of converter topologies, power levels, power flow directions and charging control strategies. An …
The charging pile energy storage system can be divided into four parts: the distribution network device, the charging system, the battery charging station and the real-time monitoring system . On the charging side, by applying the corresponding software system, it is possible to monitor the power storage data of the electric vehicle in the ...
Table 1 Charging-pile energy-storage system equipment parameters Component name Device parameters Photovoltaic module (kW) 707.84 DC charging pile power (kW) 640 AC charging pile power (kW) 144 Lithium battery energy storage (kW·h) 6000 Energy conversion system PCS capacity (kW) 800 The system is connected to the …
Power balancing mechanism in a charging station with on-site energy storage unit (Hussain, Bui, Baek, and Kim, Nov. 2019). for both EVs and hydrogen cars is proposed in (Mehrjerdi, May 2019 ...
The 2020 Cost and Performance Assessment provided installed costs for six energy storage technologies: lithium-ion (Li-ion) batteries, lead-acid batteries, vanadium redox flow batteries, pumped storage hydro, compressed-air …
The required load power in this case exceeds the power generated by the PV system. As a result, the power requirement is met by the utility grid, PV system, and the battery until the battery''s SOC is within the limits, and the SC handles the transient power component until the SOC of SC reaches its lower boundary.
The construction of public-access electric vehicle charging piles is an important way for governments to promote electric vehicle adoption. The endogenous relationships among EVs, EV charging piles, and public attention are investigated via a panel vector autoregression model in this study to discover the current development …
Electrochemical energy storage (EcES), which includes all types of energy storage in batteries, is the most widespread energy storage system due to its ability to adapt to different capacities and sizes [].An EcES system operates primarily on three major processes: first, an ionization process is carried out, so that the species …
While having a high energy density and fast response time, the systems also convince by a design life of 20 years, or 7,300 operating cycles due to a very low degradation level. The NAS battery storage solution is containerised: each 20-ft container combines six modules adding up to 250kW output and 1,450kWh energy storage capacity.
The 2020 Cost and Performance Assessment provided installed costs for six energy storage technologies: lithium-ion (Li-ion) batteries, lead-acid batteries, vanadium redox flow batteries, pumped storage hydro, …
The Ragone plot is very useful for estimating energy storage performance, but ignores the critical features, such as cycle life, cost estimation, and safety for comparison between supercapacitors and batteries. For a better comparison and understanding of energy storage technology, it is important to consider safety, cost …
The energy storage charging pile achieved energy storage benefits through charging during off-peak periods and discharging during peak periods, with …
Aiming at short-term high charging power, low load rate and other problems in the fast charging station for pure electric city buses, two kinds of energy storage (ES) configuration are considered. One is to configure distributed energy storage system (ESS) for each charging pile. Second is to configure centralized ESS for the entire charging station. …
This study confirms the benefits of ESS in contracted capacity management, peak shaving, valley filling, and price arbitrage. The result shows that the incorporation of dynamic EMS with solar-and …
The systems (cylindrical (a) and conical (b)) consist of the concentric tube and shell where ris the diameter of the inner tube, R 1 and R 2 are the radius of the outer shell in the bottom and top of the system, respectively, H is the height of the system and θ is inclination angle (shell surface angle). Note that for the cylindrical case θ = 90° and R 1 = …
1 INTRODUCTION. Concerns regarding oil dependence and environmental quality, stemming from the proliferation of diesel and petrol vehicles, have prompted a search for alternative energy resources …
In this study, to develop a benefit-allocation model, in-depth analysis of a distributed photovoltaic-power-generation carport and energy-storage charging-pile project was performed; the model was ...
5 · At present, renewable energy sources (RESs) and electric vehicles (EVs) are presented as viable solutions to reduce operation costs and lessen the negative …
The authors have previously explored the feasibility of using building foundations as small-scale compressed air energy storage (CAES) vessels under the isothermal condition via numerical simulations [10] the study, a critical assessment was made to determine whether a closed-ended steel pipe pile subjected to an air charge …
The slow charging station serves as the main charging facility due to its low cost and small size. The location and size of the charging stations are determined by the charging demand. The EV charging demand is predicted in a probabilistic manner, in which two variables are considered, namely the EVs'' charging duration and start …
In addition, as concerns over energy security and climate change continue to grow, the importance of sustainable transportation is becoming increasingly prominent [8].To achieve sustainable transportation, the promotion of high-quality and low-carbon infrastructure is essential [9].The Photovoltaic-energy storage-integrated …
calculate the maximum operating power of the energy storage-based charging pile for each time period:
The experimental results show that this method can realize the dynamic load prediction of electric vehicle charging piles. When the number of stacking units is …
The global promotion of electric vehicles (EVs) through various incentives has led to a significant increase in their sales. However, the prolonged charging duration remains a significant hindrance to the widespread adoption of these vehicles and the broader electrification of transportation. While DC-fast chargers have the potential to …
Because of the popularity of electric vehicles, large-scale charging piles are connected to the distribution network, so it is necessary to build an online platform for monitoring charging pile operation safety. In this paper, an online platform for monitoring charging pile operation safety was constructed from three aspects: hardware, database, …
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