EPE Association: EPE 2023 - DS2n: Smart Charging and Vehicle to Grid Interaction

EPE 2023 - DS2n: Smart Charging and Vehicle to Grid Interaction
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 08: Electric Vehicle Propulsion Systems and their Energy Storage > EPE 2023 - DS2n: Smart Charging and Vehicle to Grid Interaction

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   Optimized Multi-Stage Constant Current Charging Strategy for Li-ion Batteries
By Muhammad Usman TAHIR, Ariya SANGWONGWANICH, Daniel-Ioan STROE, Frede BLAABJERG [View]
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Abstract: Various methods have been proposed to reduce the charging time of lithium-ion batteries (LIBs). The multi-stage constant current (MSCC) charging technique has gained significant attention as a potential solution among various proposed methods. A study was conducted to investigate the impact of the MSCC charging technique on LIBs. Specifically, this research focused on the MSCC approach that utilizes the state of charge (SOC) as a stage transition criterion during charging. The Taguchi orthogonal arrays (OAs) were employed to identify the optimal charging current for each stage of the MSCC technique. The study explored the implementation of equal and unequal weight strategies to obtain optimal charging patterns. The experimental results were compared to the standard constant current-constant voltage (CC-CV) charging method, where the MSCC approach can effectively reduce charging time. However, the MSCC charging approach leads to a slight increase in temperature compared to the CC-CV method. Additionally, the energy efficiency of the MSCC charging method was 0.5\% lower than that of the CC-CV method. Despite this, MSCC charging holds potential for fast electric vehicle (EV) charging applications.

   Review of Charging and Discharging Strategies for EVs Based on DR
By Zhilei YAO, Jiwei GAN [View]
[Download]

Abstract: Reasonable control for charging and discharging electric vehicles (EVs) can improve the safety and economy of the electric power system. In addition, the charging cost for EV users can be significantly reduced. Demand response (DR) strategy is one of the key technologies for orderly charging and discharging EVs, which can address many problems caused by large-scale EVs interfacing with the utility and improve renewable energy utilization. A literature review on charging and discharging strategies for EVs based on DR is presented. Definition of DR is illustrated. The charging and discharging strategies of EVs based on DR is elaborated, which can be divided into price-based and incentive-based demand response strategies. Finally, comparison among different DR strategies for charging and discharging EVs is given.

EPE 2023 - DS2n: Smart Charging and Vehicle to Grid Interaction
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 08: Electric Vehicle Propulsion Systems and their Energy Storage > EPE 2023 - DS2n: Smart Charging and Vehicle to Grid Interaction
	[return to parent folder]

	Optimized Multi-Stage Constant Current Charging Strategy for Li-ion Batteries By Muhammad Usman TAHIR, Ariya SANGWONGWANICH, Daniel-Ioan STROE, Frede BLAABJERG	[View] [Download]
Abstract: Various methods have been proposed to reduce the charging time of lithium-ion batteries (LIBs). The multi-stage constant current (MSCC) charging technique has gained significant attention as a potential solution among various proposed methods. A study was conducted to investigate the impact of the MSCC charging technique on LIBs. Specifically, this research focused on the MSCC approach that utilizes the state of charge (SOC) as a stage transition criterion during charging. The Taguchi orthogonal arrays (OAs) were employed to identify the optimal charging current for each stage of the MSCC technique. The study explored the implementation of equal and unequal weight strategies to obtain optimal charging patterns. The experimental results were compared to the standard constant current-constant voltage (CC-CV) charging method, where the MSCC approach can effectively reduce charging time. However, the MSCC charging approach leads to a slight increase in temperature compared to the CC-CV method. Additionally, the energy efficiency of the MSCC charging method was 0.5\% lower than that of the CC-CV method. Despite this, MSCC charging holds potential for fast electric vehicle (EV) charging applications.

	Review of Charging and Discharging Strategies for EVs Based on DR By Zhilei YAO, Jiwei GAN	[View] [Download]
Abstract: Reasonable control for charging and discharging electric vehicles (EVs) can improve the safety and economy of the electric power system. In addition, the charging cost for EV users can be significantly reduced. Demand response (DR) strategy is one of the key technologies for orderly charging and discharging EVs, which can address many problems caused by large-scale EVs interfacing with the utility and improve renewable energy utilization. A literature review on charging and discharging strategies for EVs based on DR is presented. Definition of DR is illustrated. The charging and discharging strategies of EVs based on DR is elaborated, which can be divided into price-based and incentive-based demand response strategies. Finally, comparison among different DR strategies for charging and discharging EVs is given.