A Review of Dynamic Wireless Power Transfer for In‐Motion Electric Vehicles

Abstract

Dynamic wireless power transfer system (DWPT) in urban area ensures an uninterrupted power supply for electric vehicles (EVs), extending or even providing an infinite driving range with significantly reduced battery capacity. The underground power supply network also saves more space and hence is important in urban areas. It must be noted that the railways have become an indispensable form of public transportation to reduce pollution and traffic congestion. In recent years, there has been a consistent increase in the number of high-speed railways in major cities of China, thereby improving accessibility. Wireless power transfer for train is safer and more robust when compared with conductive power transfer through pantograph mounted on the trains. Direct contact is subject to wear and tear; in particular, the average speed of modern trains has been increasing. When the pressure of pantograph is not sufficient, arcs, variations of the current, and even interruption in power supply may occur. This chapter provides a review of the latest research and development of dynamic wireless power transfer for urban EV and electric train (ET). The following key technology issues have been discussed: (1) power rails and pickups, (2) segmentations and power supply schemes, (3) circuit topologies and dynamic impedance matching, (4) control strategies, and (5) electromagnetic interference.

A Comprehensive Review on Wireless Capacitive Power Transfer Technology: Fundamentals and Applications

“…The design of roadway-powered CPT system is highlighted in roadway investigation-based studies. The benefits and the drawbacks of the dynamic wireless charging system are highlighted in [239,240]. The increased driving range, reduced battery size, decreased traffic congestion and pollution are the benefits of the dynamic wireless charging, the high cost of the system makes up the drawback side.…”

In-depth perception of dynamic inductive wireless power transfer development: a review

“…Generally, the time taken to charge an EV can be a minimum of 30 minutes or more than 12 hours, depending on the battery size and charging point speed. For instance, only under 8 hours is needed for a typical EV of 60 kWh battery to charge from empty to full with a 7 kW charging point [50]. So, the charging process needs to occur quite a few times before arriving at the destination and this cause the lack of the ability to ensure long-range travel.…”

Receiver–Coil Location Detection in a Dynamic Wireless Power Transfer System for Electric Vehicle Charging

“…The most diffused solution is that of inductive power transfer (IPT), especially for medium- to high-power applications, or for embedded receivers (such as in the case of implantable devices). One of the most popular applications is that of the recharging of electric vehicles (EVs) of various sizes, from cars to buses and people movers [ 1 , 2 , 3 , 4 ]. For this application, we may further distinguish static and dynamic charging, with the receiving vehicle in parked or moving conditions, respectively.…”