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Keywords = distributed hybrid energy storage system (D-HESS)

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15 pages, 12836 KiB  
Article
Experimental Study on Heuristics Energy Management Strategy for Hybrid Energy Storage System
by Alok Ranjan, Sanjay Bodkhe, Gaurav Goyal, Archana Belge and Sneha Tibude
Energies 2024, 17(23), 5850; https://doi.org/10.3390/en17235850 - 22 Nov 2024
Cited by 2 | Viewed by 838
Abstract
The energy management strategy (EMS) is a decision-making algorithm for effective power allocation between storage devices in a hybrid energy storage system (HESS). Source voltages, state of charge (SOC), the terminal voltage of the load, and the rate of change in the battery [...] Read more.
The energy management strategy (EMS) is a decision-making algorithm for effective power allocation between storage devices in a hybrid energy storage system (HESS). Source voltages, state of charge (SOC), the terminal voltage of the load, and the rate of change in the battery current must be considered while implementing the EMS and, hence, they are termed as performance indicators. This research work focuses on the development of an EMS, designed to manage the performance indicators of the sources (terminal voltage and battery current rate) and ensure efficient power distribution through a shared bus topology. A shared bus topology employs individual converters for each source, offering efficient control over these sources. Rule-based fuzzy logic control ensures efficient power distribution between batteries and ultracapacitors. Additionally, hardware has been developed to validate the power allocation strategy and regulate the DC-link voltage in the energy management system (EMS). dSPACE MicroLabBox is utilized for the implementation of real-time control strategies. A battery and an ultracapacitor bank are utilized in a hybrid energy storage system. The simulation outcomes have been corroborated by experimental data, affirming the efficacy of the proposed energy management strategy. The proposed EMS achieves a 2.1% battery energy saving compared to a conventional battery electric vehicle over a 25 s duration under the same load conditions. Full article
(This article belongs to the Special Issue Electric Waves to Future Mobility)
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14 pages, 2518 KiB  
Article
Power Distribution Strategy of Microgrid Hybrid Energy Storage System Based on Improved Hierarchical Control
by Tiezhou Wu, Wenshan Yu, Lujun Wang, Linxin Guo and Zhiquan Tang
Energies 2019, 12(18), 3498; https://doi.org/10.3390/en12183498 - 11 Sep 2019
Cited by 13 | Viewed by 2870
Abstract
Traditional hierarchical control of the microgrid does not consider the energy storage status of a distributed hybrid energy storage system. This leads to the inconsistency of the remaining capacity of the energy storage system in the process of system operation, which is not [...] Read more.
Traditional hierarchical control of the microgrid does not consider the energy storage status of a distributed hybrid energy storage system. This leads to the inconsistency of the remaining capacity of the energy storage system in the process of system operation, which is not conducive to the safe and stable operation of the system. In this paper, an improved hierarchical control strategy is proposed: the first allocation layer completes the allocation between the distribution energy storage systems considering the state of hybrid energy storage systems, and the second allocation layer realizes the allocation within the hybrid energy storage systems based on variable time constant low-pass filtering. Considering the extreme conditions of energy storage systems, the transfer current is introduced in the second allocation process. The SOC (stage of charge) of the supercapacitor is between 40% and 60%, which ensures that the supercapacitor has enough margin to respond to the power demand. An example of a 300 MW photovoltaic microgrid system in a certain area is analyzed. Compared with the traditional hierarchical control, the proposed control strategy can reduce the SOC change of a hybrid energy storage system by 9% under the same conditions, and make the supercapacitor active after power stabilization, which is helpful to the stable operation of the microgrid. Full article
(This article belongs to the Special Issue Hybrid Storage Technologies in Solar Energy Based Smart Cities)
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