Design of Three Levels Electric Vehicle Charger Integrated PV System

Abstract

Electric vehicles (EVs) become a solution for the rapid increase of the environment pollutions. EVs are energized by battery storage systems which are environment friendly and with more technological advancements; their price will be affordable by the consumers. However, as EVs become significant loads on the utility distribution system, maintaining the power quality becomes a challenge. This is due to the harmonics distortions that are produced when many loads connected to the grid. Moreover, for numerous reasons – such as energy costs and environmental matters – it is preferable to use Renewable Energy Sources (RES) to charge EVs. Therefore, in order to mitigate these issues, the battery charger of the EV needs to have a sufficient performance with minimized total harmonic distortion (THD). Thus, the electrical power of the proposed EV charger is provided by a photovoltaic (PV) system which converts solar irradiance into DC current. The proposed charger consists of two converters: (1) a three-phase sinusoidal pulse-width- modulation (SPWM) (2) a converter for the three-phase bridge rectifier. The charger provides a three-stranded level of EV charging (Levels 1, 2 and Level 3). Simulation work of the proposed EV charger was performed by using MATLAB–Simulink. A laboratory prototype was fabricated and controlled by using digital signal processor (DSP/TMS320F28335), to prove its function and performance. From the results, the proposed charger can deliver level 1, 2 and 3 battery charging with low THD.