scholarly journals Feasibility Study of Zero Energy Houses: Case Study of Magrun City - Libya

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Karima H Alshoshan ◽  
Wedad B El-Osta ◽  
Yosof M Kahlifa ◽  
Ibrahim M Saleh
Keyword(s):  
Energy Demand ◽  
Storage System ◽  
Electric Energy ◽  
Zero Energy ◽  
Wind Energy Conversion System ◽  
Wind Energy Conversion ◽  
Renewable Energy Technologies ◽  
Energy Technologies ◽  
Energy Conversion System

The residential load is one of the largest consumers of the electric energy in Libya that could be supplied by renewable energies. Renewable energy technologies and systems can be a good solution to build “Zero Energy Buildings”. A zero-energy house is proposed for Maqrun city. It is intended to use wind turbine with batteries as a storage system to supply electric energy demand for this house.The intended house average daily electric energy demand is estimated to be 35 kWh/day. Two WECS were selected to supply the energy demand each of size 6 kW. The energy produced by the selected wind energy conversion system (WECS) is about 23,894 kWh/yr and the expected capacity factor at the site is about 23%. Modeling of energy demand of the house and simulation of its performance was performed using excel sheets and HOMER software.

scholarly journals Terminal Voltage Control Scheme of Stand-Alone Wind Energy Conversion System with Battery Energy Storage System

2020 ◽  
Vol 24 (7) ◽  
pp. 882-890
Author(s):  
Dan-Yun Li ◽  
Dong-Ming Yang ◽  
Zhen-Tao Liu ◽  
◽  
Keyword(s):  
Storage System ◽  
Energy Storage System ◽  
Battery Energy Storage System ◽  
Wind Energy Conversion System ◽  
Wind Energy Conversion ◽  
Control Scheme ◽  
Conversion System ◽  
Terminal Voltage ◽  
Energy Conversion System ◽  
Battery Energy

The terminal voltage is easily affected by the characteristics of loads and variations in wind speed, loads and system parameters in a stand-alone wind energy conversion system. This paper presents a terminal voltage control scheme that combines the equivalent-input-disturbance (EID) and model predictive control (MPC). The total disturbance is observed and compensated in real time by the EID. A battery energy storage system based on MPC is employed to smooth the fluctuation and imbalance in power caused by the variation in wind speed and loads, thereby solving the problem of terminal voltage flicker and instability. The appropriate terminal voltage can be obtained using the proposed scheme, which is a simple design and offers good prospects for actual applications. The simulation results demonstrate the validity of the proposed scheme.

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