Magnetic Alignment Detection Using Existing Charging Facility in Wireless EV Chargers

Table 2

Comparison among potential alignment techniques for wireless EV chargers.

Techniques	Description	Pros	Cons	Reference
Magnetic sensing	Using existing coils and auxiliary coils	Simple and low-cost implementation by sharing the charging facility	Detection distance might be relatively small	[16]
Machine vision	Including a camera and monitor	Visibly detect the charging station	Invalid when ground is covered with snow	[17]
Ultrasonic positioning	Including a few ultrasonic transmitters and receivers	Mature technology and can be high in accuracy	High cost and difficulty to go through debris	[18]
RF positioning	Including radio readers and multiple tags	Mature technology and simple implementation	High cost and complexity	[13, 18]