Paper Info
Title
CatCharger: Deploying In-Motion Wireless Chargers in a Metropolitan Road Network via Categorization and Clustering of Vehicle Traffic
Abstract
In metropolitan areas with heavy transit demands, electric vehicles (EVs) are expected to be continuously driving without recharging downtime. Wireless power transfer (WPT) provides a promising solution for in-motion EV charging. Nevertheless, previous works are not directly applicable for the deployment of in-motion wireless chargers due to their different charging characteristics. The challenge of deploying in-motion wireless chargers to support the continuous driving of EVs in a metropolitan road network with the minimum cost remains unsolved. We propose <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">CatCharger</i> to tackle this challenge. By analyzing a metropolitan-scale data set, we found that traffic attributes like vehicle passing speed, daily visit frequency at intersections (i.e., landmarks), and their variances are diverse, and these attributes are critical to in-motion wireless charging performance. Driven by these observations, we first group landmarks with similar attribute values using the entropy minimization clustering method, and select candidate landmarks from the groups with suitable attribute values. Then, we use the kernel density estimator (KDE) to deduce the expected vehicle residual energy at each candidate landmark and consider EV drivers’ routing choice behavior in charger deployment. Finally, we determine the deployment locations by formulating and solving a multiobjective optimization problem, which maximizes vehicle traffic flow at charger deployment positions while guaranteeing the continuous driving of EVs at each landmark. Trace-driven experiments demonstrate that <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">CatCharger</i> increases the ratio of driving EVs at the end of a day by 12.5% under the same deployment cost.
Year
DOI
Venue
2022
10.1109/JIOT.2021.3121756
IEEE Internet of Things Journal
Keywords
DocType
Volume
Charger deployment,kernel density estimation,mobile data analysis,vehicle wireless charging
Journal
9
Issue
ISSN
Citations 
12
2327-4662
0
PageRank 
References 
Authors
0.34
21
8
Name
Order
Citations
PageRank
li yan1547.67
Haiying Shen200.34
Zhao Juanjuan38114.29
Z. Chen43443271.62
Feng Luo528426.03
Chenxi Qiu600.34
Zhe Zhang700.34
Shohaib Mahmud801.35