DESIGNING AND MODELLING OF CONTACTLESS ELECTRIC-VEHICLES BATTERY- CHARGING STATION FED FROM PHOTO-VOLTAIC ARRAY

Abstract

The development and commercialization of hybrid electric vehicles (HEVs) and electric vehicles (EVs) are actively being realized due to environmental concerns and rising oil prices. But, EV technology with battery has faced many problems up to now. One of the most important problems is rapidly battery-charging from a clean and reliable source. So, this research proposes a convenient way to charge batteries of EVs and HEVs from a neat power supply. The paper introduces a public off-board battery-charging station fed from on-grid (OG) photovoltaic (PV) array. The proposed 100Kw-contactless charging station is modeled, designed and simulated. It comprises two main sections: station-side (stationary) section and EV (moving) section. The first section includes PV panels, maximum power point tracking (MPPT)-converter, on-grid 3-level interface inverter, and high-frequency compensated resonant converter. The second one consists of the rectifier, switched mode power converter, and battery-charging controller. An inductive-coupled power (ICP) is transferred from the station to the batteries through an air-core transformer (ACT) with large air-gap. Its primary winding is placed on the station ground and the secondary winding is in the EV. Modeling of the ACTs accomplishes several requirements such as air-gap, have good tolerance to misalignment, light-weight, durable and cost effective as possible. Smart and intelligent controllers are proposed for MPPT, interface on-grid inverter and