Virtual inertia control strategy at energy-storage terminal in DC microgrid

2017 ◽  
Author(s):  
Xu Yan ◽  
Bai Congcong ◽  
Fu Yuan
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Dc Microgrid ◽  
Virtual Inertia ◽  
Inertia Control

An Enhanced Virtual Inertia Control Strategy Based on an Improved SOGI-FLL Scheme for Energy Storage Converters

2021 ◽  
Author(s):  
Rongliang Shi ◽  
Guobin Wang ◽  
Lieping Zhang ◽  
Yannan Yu ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Virtual Inertia ◽  
Inertia Control

scholarly journals An Improved Virtual Inertia Control Strategy for Low Voltage AC Microgrids with Hybrid Energy Storage Systems

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 442
Author(s):  
Ruiming Liu ◽  
Shengtie Wang ◽  
Guangchen Liu ◽  
Sufang Wen ◽  
Jianwei Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Low Voltage ◽  
Power Converter ◽  
Parameter Analysis ◽  
Step Response ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Virtual Inertia ◽  
Inertia Control

This paper proposes a novel virtual inertia control (VIC) method based on a feedforward decoupling strategy to address the low inertia issue of power-converter-interfaced microgrids. The feedforward control scheme is employed to eliminate the coupling between active and reactive power caused by line impedance. The active power-voltage droop can be applied to the battery converter in the hybrid energy storage system (HESS). A novel VIC method is developed for the supercapacitor (SC) converter of HESS to increase the inertia of the microgrid. Detailed small-signal modeling of the SC converter with the proposed VIC was conducted, and the transfer function model was obtained. Parameter analysis of the virtual inertia and virtual damping was carried out with the pole-zero map method, and the step response characteristic of output voltage amplitude with power variation was analyzed in detail, deriving the parameter design principle. The simulation study verifies the effectiveness and validity of the proposed control strategy. The proposed feedforward decoupling method and VIC can be widely applied in microgrids to enhance inertia and improve their power quality.

scholarly journals Bidirectional Virtual Inertia Control Strategy for Interlinking Converter in Hybrid AC/DC Microgrid

2021 ◽  
Vol 1887 (1) ◽  
pp. 012040
Author(s):  
Zhen Ma ◽  
Lin E ◽  
Hongyuan Deng ◽  
Zhi Wang ◽  
Yongqiang Zhu
Keyword(s):  
Control Strategy ◽  
Dc Microgrid ◽  
Virtual Inertia ◽  
Inertia Control

scholarly journals Novel Control Strategy for Enhancing Microgrid Operation Connected to Photovoltaic Generation and Energy Storage Systems

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1261
Author(s):  
Dina Emara ◽  
Mohamed Ezzat ◽  
Almoataz Y. Abdelaziz ◽  
Karar Mahmoud ◽  
Matti Lehtonen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Voltage Stability ◽  
Storage Systems ◽  
Voltage Source ◽  
Stable Operation ◽  
Energy Storage Systems ◽  
Dc Microgrid ◽  
Photovoltaic Generation ◽  
Dc Voltage

Recently, the penetration of energy storage systems and photovoltaics has been significantly expanded worldwide. In this regard, this paper presents the enhanced operation and control of DC microgrid systems, which are based on photovoltaic modules, battery storage systems, and DC load. DC–DC and DC–AC converters are coordinated and controlled to achieve DC voltage stability in the microgrid. To achieve such an ambitious target, the system is widely operated in two different modes: stand-alone and grid-connected modes. The novel control strategy enables maximum power generation from the photovoltaic system across different techniques for operating the microgrid. Six different cases are simulated and analyzed using the MATLAB/Simulink platform while varying irradiance levels and consequently varying photovoltaic generation. The proposed system achieves voltage and power stability at different load demands. It is illustrated that the grid-tied mode of operation regulated by voltage source converter control offers more stability than the islanded mode. In general, the proposed battery converter control introduces a stable operation and regulated DC voltage but with few voltage spikes. The merit of the integrated DC microgrid with batteries is to attain further flexibility and reliability through balancing power demand and generation. The simulation results also show the system can operate properly in normal or abnormal cases, thanks to the proposed control strategy, which can regulate the voltage stability of the DC bus in the microgrid with energy storage systems and photovoltaics.

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