Abstract
A rise of electric vehicles and consequent increase of charging stations in the UK has widely been acknowledged due to its negligible carbon emissions leading to the transformation of low-carbon economy. A dynamic increase in the wind and solar power systems installation and grid-integration to the charging stations of electric vehicles has led uncertainty issues in the power distribution grid e.g voltage fluctuations, transients/harmonics. This paper addresses the uncertainty scenario aiming to contribute and propose a potential model focusing on the design of the route in which solar electric power is delivered to the electric vehicle charging station. A specialised system containing an electrical control system is proposed using MATLAB and SIMULINK. A system was designed for improving the interaction among electric-vehicle charging points and battery storage system in which electrical control system assists in developing the correct duty cycle in order to stabilise and regulate the voltage at the DC/DC power conversion station. The proposed system is very effective and significant contribution in understanding and reducing the load on the converter untimely enabling reduction of charging time for electric vehicles. The implemented electrical control system manages the electric power on the grid such as during the peak times it draws power from the batteries and then charges up the batteries in the off-peak times. A constant voltage is achieved on the micro grid irrespective of fluctuations in solar energy generation and in the load.
Highlights
Around 550000 hybrid electric vehicles are reported to be registered in 2015 by the centre of solar energy and hydrogen research (Shaaban et al, 2015)
The storage energy based electric-vehicles are classified into plug-in hybrid electric vehicles (Han et al, 2017).The main factor in the revolution of electric-vehicles is due to the improvement in power electronics components, better performance of electric machines and the storage system (Shen et al, 2014)
A solar energy system capacity of 200 kWh is simulated on MATLAB/SIMULINK in which the 200 kWh storage system is added to balance the energy demands during the higher temperatures and low irradiance.This storage system is charged up from the solar system and the fuel generator is added of capacity 200 kWh that charging up the storage system after the energy falls to 60%
Summary
Around 550000 hybrid electric vehicles are reported to be registered in 2015 by the centre of solar energy and hydrogen research (Shaaban et al, 2015). This paper presents the Simulink model for the solar storage system that transmits high DC voltage to the charging station This is due to the unpredictable power generation from the solar system, it is a challenge to supply the constant required voltage to the electric vehicle. Quality ratings and stability are the main factors to charge up the large numbers of electric vehicle instantly Due to these issues imbalances occur and harmonics and voltage sags arise. The research investigates the voltage efficiency and power flow management of solar energy transmission to the electric-vehicle charging station. This system has the ability to manage the power flow between generation and the loads. It is connected to the solar energy system and the storage battery bank and can be linked with fuel generator if required
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