Optimal Resonant Beam Charging for Electronic Vehicles in Internet of Intelligent Vehicles

TL;DR

This paper introduces an adaptive resonant beam charging system for electric vehicles in the Internet of Intelligent Vehicles, optimizing wireless power transmission efficiency through a closed-form formula and analysis.

Contribution

It presents a novel adaptive RBC system with a closed-form efficiency formula and proves the existence of a unique optimal power transmission efficiency.

Findings

Derived a closed-form formula for end-to-end efficiency.

Proved the existence of a unique optimal efficiency point.

Provided guidelines for system design and implementation.

Abstract

To enable electric vehicles (EVs) to access to the internet of intelligent vehicles (IoIV), charging EVs wirelessly anytime and anywhere becomes an urgent need. The resonant beam charging (RBC) technology can provide high-power and long-range wireless energy for EVs. However, the RBC system is unefficient. To improve the RBC power transmission efficiency, the adaptive resonant beam charging (ARBC) technology was introduced. In this paper, after analyzing the modular model of the ARBC system, we obtain the closed-form formula of the end-to-end power transmission efficiency. Then, we prove that the optimal power transmission efficiency uniquely exists. Moreover, we analyze the relationships among the optimal power transmission efficiency, the source power, the output power, and the beam transmission efficiency, which provide the guidelines for the optimal ARBC system design and implementation. Hence, perpetual energy can be supplied to EVs in IoIV virtually.