EV Charging Technology

Abstract

<div>Wireless power transfer (WPT) systems for electric vehicles (EVs) are</div><div>convenient and safe. In these systems, the inverter generates a high-frequency current</div><div>and strong magnetic field, which are transferred to a primary compensated network.</div><div>Simultaneously, the load absorbs power through a pickup compensated network,</div><div>rectifier, and filter. Two types of WPT charging systems exist: static and dynamic. A</div><div>static battery charging system stores considerable power during battery charging. This</div><div>vehicle can be traveled over a long distance by using a heavy electric storage system.</div><div>For example, the Tesla Model-S electric storage system, which weighs approximately</div><div>900 kg, can transfer power of up to 85 kWh, resulting in a driving range of 400 miles.</div><div>However, a heavy electric storage system has low efficiency and causes pollution. A</div><div>dynamic battery charging system has a smaller battery, lower weight, and higher</div><div>efficiency than a static charging system. However, dynamic battery charging systems</div><div>must be supported by integrated infrastructure, such as numerous grounded chargers.</div><div>The source of power for static and dynamic charging is the power grid. Grid power</div><div>mainly originates from centralized power factories, which generate power and</div><div>emissions through the burning of fossil fuels. Renewable energy sources for powering</div><div>EVs include sunlight, wind, rain droplets, static electricity, free lifting force, and</div><div>regenerative brakes during driving. These renewable power source can be developed</div><div>over the next decade years.</div>