Smart Wireless Power Transmission System for Autonomous EV Charging

Abstract

This paper presents a novel localization method for electric vehicles (EVs) charging through wireless power transmission (WPT). With the proposed technique, the wireless charging system can selfdetermine the most efficient coil to transmit power at the EV's position based on the sensors activated by its wheels. To ensure optimal charging, our approach involves measurement of the transfer efficiency of individual transmission coil to determine the most efficient one to be used. This not only improves the charging performance but also minimizes energy losses by autonomously activating only the coils with the highest transfer efficiencies. The results show that with the proposed system, it is possible to detect the coil with maximum transmitting efficiency without the use of actual power transmission and comparison of the measured efficiency. This paper also proves that with the proposed charger setup , the position of the receiver coil can be detected almost instantly, which indeed saves energy and boosts the charging time. INDEX TERMS Wireless power transmission, car charging, electrical vehicle, efficiency, charging pad, sensor network, smart charger.

Ultrawideband (UWB)-based precise short-range localization for wireless power transfer to electric vehicles in parking environments

“…In addition, when combined with an autonomous parking system, an advanced driver assistance system (ADAS), the use of EVs becomes easier because these vehicles can park and charge themselves. The WPT consists of power-transmitting coils on the parking lot floor and power-receiving coils for the car, and to be charged, the EV must precisely recognize the car location within the parking area and align the two sets of coils to centimeter-level accuracy ( Rozman et al, 2019 ). Therefore, for the WPT system to be combined with an autonomous parking system, precise localization technology is required in the parking area ( Tian et al, 2020 ; Shin et al, 2019 ).…”

A Secondary-Side Controlled Electric Vehicle Wireless Charger

“…Exposure to rain, snow, humidity, and temperature variations is drastically reduced, increasing the overall system's reliability and reducing the ordinary and extraordinary maintenance required. Furthermore, WPT represents the best charging technique for autonomous EVs, since the charging process can be completely automated [1].…”

Research on Energy Distribution of Regenerative Braking in Station for Contactless Traction Power Supply System Based on Bidirectional Energy Interaction ICPT System

“…The core of the contactless traction power supply system is the dynamic ICPT technology [3]- [5]. Many achievements have been made in the research of multi transmitting coil structure [6]- [7], resonant topology [8]- [9], load position detection, and coil switching [10]- [12].…”