Research on charging/discharging control strategy of battery-super capacitor hybrid energy storage system in photovoltaic system

2016 ◽  
Author(s):  
Hhuijuan Wang ◽  
Jiancheng Zhang
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Storage System ◽  
Energy Storage System ◽  
Photovoltaic System ◽  
Super Capacitor ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System

Control Strategy of the Hybrid Energy Storage System for Leveling Off Fluctuating Power Output of Stand-Alone Photovoltaic System

2013 ◽  
Vol 860-863 ◽  
pp. 608-612
Author(s):  
Hai Bo Wang ◽  
Xiu Yang ◽  
Jun Liu ◽  
Jie Chen
Keyword(s):  
Energy Management ◽  
Control Strategy ◽  
Storage System ◽  
Energy Storage System ◽  
Photovoltaic System ◽  
Super Capacitor ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
And Control

Hybrid energy storage system (HESS) including battery and super-capacitor can take advantages of both high energy density and high power density. In the stand-alone PV micro-grid, in which two buck/boost bidirectional converters are connected to the DC bus directly, a novel energy management scheme is proposed. After filtering the fluctuating power of the HESS, charge and discharge currents of the battery are controlled by hysteresis control method, the super-capacitor supplies the difference of the power. To leveling off the fluctuating power output of photovoltaic system and control the voltage of the DC bus, a new control strategy applied to the bidirectional converter of the super capacitor is put forward. The feed-forward loops of input voltage, load current and output voltage are introduced to improve the response speed and stability of the system. Results of the simulation show the effectiveness of the proposed energy management and control strategy.

scholarly journals Study on Hybrid Energy Storage Configuration and Control Strategy of Grid-connected Wind Hydrogen System

2020 ◽  
Vol 155 ◽  
pp. 01003
Author(s):  
Xiaojun Shen ◽  
Congying Nie ◽  
Hong Lv ◽  
Wei Wang
Keyword(s):  
Energy Storage ◽  
Wind Power ◽  
Control Strategy ◽  
Storage System ◽  
Energy Storage System ◽  
Super Capacitor ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
And Control

The randomness and volatility of wind energy bring great challenges to wind power grid-connected. The hybrid energy storage technology based on electrolysis cell hydrogen production and super capacitor has become an effective way to stabilize wind power fluctuations. Based on the establishment of the grid-type wind-hydrogen coupling system working characteristic constraint and the minimum initial investment cost of the hybrid energy storage system, an alkaline electrolytic cell-super capacitor hybrid storage based on low-pass filtering-fluctuation observation is proposed. The method can be configured, and a hybrid energy storage coordinated control strategy based on the super capacitor SOC (state of charge) is developed. The case study results show that the hybrid energy storage system configuration method and control strategy proposed in this paper are effective, which can reduce the fluctuation of wind power grid-connected power to meet the grid connection standard.

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