scholarly journals Study on control strategy of output stability of wind-solar reservoir thermal system

2021 ◽  
Vol 2108 (1) ◽  
pp. 012043
Author(s):  
Shengshan Li
Keyword(s):  
Control Method ◽  
Storage System ◽  
Energy Storage System ◽  
Heat Output ◽  
Heat Accumulation ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Output Stability ◽  
Output Fluctuations ◽  
Heating Model

Abstract In view of the landscape reservoir heat output coordinated control demand, based on the topology of the hybrid energy storage system of the three ports heating model, using the sunlight with the electricity output of the complementary and heat accumulation can be regulatory, intends to research a kind of based on photo-thermal storage heat and scenery electricity heating output port control method, in order to achieve the goal of fast and smooth regulating heat output fluctuations, The coordinated output control of integrated wind-landscape storage and heat collection is realized.

scholarly journals Development of Supercapacitor-Aided Hybrid Energy Storage System to Enhance Battery Life Cycle of Electric Vehicles

2021 ◽  
Vol 13 (14) ◽  
pp. 7682
Author(s):  
Min-Fu Hsieh ◽  
Po-Hsun Chen ◽  
Fu-Sheng Pai ◽  
Rui-Yang Weng
Keyword(s):  
Life Cycle ◽  
Energy Storage ◽  
Electric Vehicles ◽  
Control Method ◽  
Storage System ◽  
Energy Storage System ◽  
Feedback Signal ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System

This paper presents a C-rate control method for a battery/supercapacitor (SC) hybrid energy storage system (HESS) to enhance the life cycle of the battery in electric vehicles (EVs). The proposed HESS provides satisfactory power for dynamic movements of EVs (e.g., acceleration or braking) while keeping the battery current within a secure level to prevent it from degradation. The configurations of conventional HESSs are often complex due to the two energy storages and their current/voltage sensing involved. Therefore, in this paper, a simple current-sensing scheme is utilized and the battery is directly treated as a controlled variable to help the battery output current remain stable for different load conditions. While the proposed circuit requires only one current feedback signal, neither the SC nor load current sensors are needed, and the circuit design is thus significantly simplified. Both simulation and experimental results validated the effectiveness of the proposed HESS operating in conjunction with the motor drive system. The proposed method aims at fully utilizing recycled energy and prolonging battery lifespan.

scholarly journals A Multi-layer Coordinated Control Scheme to Improve the Operation Friendliness of Grid-Connected Multiple Microgrids

Energies ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 255 ◽  
Author(s):  
Pan Wu ◽  
Wentao Huang ◽  
Nengling Tai ◽  
Zhoujun Ma ◽  
Xiaodong Zheng ◽  
...  
Keyword(s):  
Control Method ◽  
Storage System ◽  
Coordinated Control ◽  
Energy Storage System ◽  
Power Fluctuation ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
Power Exchange ◽  
Control Scheme

Multiple microgrids (MMGs) are clusters of interconnected microgrids that have great potential for integrating a large number of distributed renewable energies (DREs). The grid-connected control scheme is important for the exploration of the MMGs’ operation potential. In this paper, a multi-layer coordinated control scheme for DC interconnected MMGs is proposed to optimize their operation and improve their operation friendliness. An adaptive droop control method is designed for the DC connection interfaces of the MMGs to adaptively manage the power exchange among the sub-microgrids. Meanwhile, the strategy of power fluctuation suppression is developed for the hybrid energy storage system (HESS) in the MMGs. The coordination among the sub-microgrids and the HESS is then clarified by the proposed control scheme to optimize the AC tie-line power and make the MMGs a highly coordinated collective. A case study is performed in PSCAD/EMTDC based on the demonstration project in Guangxi, China. The results show that the proposed multi-layer coordinated control scheme realizes the coordinated operation of the MMGs, fully exploits the complementarity of the MMGs, and improves the operation friendliness among the sub-microgrids and the utility grid. Thus the integration and utilization of a large number of DREs is enhanced.

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