scholarly journals Electric vehicle wireless charging technology: a state-of-the-art review of magnetic coupling systems

2014 ◽  
Vol 1 (2) ◽  
pp. 87-96 ◽  
Author(s):  
Taylor M. Fisher ◽  
Kathleen Blair Farley ◽  
Yabiao Gao ◽  
Hua Bai ◽  
Zion Tsz Ho Tse
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Magnetic Coupling ◽  
Gasoline Prices ◽  
Wireless Charging ◽  
Charging Infrastructure ◽  
Transit Buses ◽  
Magnetic Inductance ◽  
Range Anxiety ◽  
Dynamic Charging

Electric vehicles (EVs) are becoming more popular due to concerns about the environment and rising gasoline prices. However, the charging infrastructure is lacking, and most people can only charge their EVs at home if they remember to plug in their cars. Using the principles of magnetic inductance and magnetic resonance, wireless charging (WC) could help significantly with these infrastructure problems by making charging secure and convenient. WC systems also have the potential to provide dynamic charging, making long road trips with EVs feasible and eliminating range anxiety. In this paper, we review the companies available in the literature that have developed electric vehicle wireless charging systems, automobile manufacturers interested in such technology, and research from universities and laboratories on the topic. While the field is still very young, there are many promising technologies available today. Some systems have already been in use for years, recharging public transit buses at bus stops. Safety and regulations are also discussed.

A behavioral intervention to reduce range anxiety and increase electric vehicle uptake

2021 ◽  
Author(s):  
Mario Herberz ◽  
Ulf Hahnel ◽  
Tobias Brosch
Keyword(s):  
Electric Vehicle ◽  
Behavioral Intervention ◽  
Electric Vehicles ◽  
Large Scale ◽  
Global Market ◽  
Charging Infrastructure ◽  
Technological Adoption ◽  
Financial Benefits ◽  
Willingness To Adopt ◽  
Range Anxiety

Abstract Electric vehicles are on the rise, but are still far from reaching the global market share required to achieve climate objectives. While financial and technological adoption barriers are increasingly removed, psychological barriers remain insufficiently addressed on a large scale. Here, we show that car owners substantially underestimate the compatibility of available battery capacities with their individual mobility needs, increasing the demand of long battery ranges and reducing willingness to adopt. We test a simple behavioral intervention in two randomized online experiments in Germany and the U.S.: providing tailored compatibility information reduced range anxiety and increased willingness to pay for electric vehicles. Compatibility information more strongly increased preferences than information about privileged access to charging infrastructure, and selectively increased preferences of car owners for whom an electric vehicle would yield higher financial benefits. This scalable intervention may complement classical policy approaches in achieving a resource-conscious and global electrification of mobility.

scholarly journals Simulation of Future Electric Vehicle Charging Behavior—Effects of Transition from PHEV to FEV

2019 ◽  
Vol 10 (2) ◽  
pp. 42 ◽  
Author(s):  
Igna Vermeulen ◽  
Jurjen Rienk Helmus ◽  
Mike Lees ◽  
Robert van den Hoed
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Hybrid Electric Vehicles ◽  
Early Years ◽  
Charging Infrastructure ◽  
Agent Based ◽  
Electric Vehicle Charging ◽  
Subsidy Scheme ◽  
Infrastructure Performance ◽  
Charging Stations

The Netherlands is a frontrunner in the field of public charging infrastructure, having one of the highest number of public charging stations per electric vehicle (EV) in the world. During the early years of adoption (2012–2015), a large percentage of the EV fleet were plugin hybrid electric vehicles (PHEV) due to the subsidy scheme at that time. With an increasing number of full electric vehicles (FEVs) on the market and a current subsidy scheme for FEVs only, a transition of the EV fleet from PHEV to FEV is expected. This is hypothesized to have an effect on the charging behavior of the complete fleet, and is reason to understand better how PHEVs and FEVs differ in charging behavior and how this impacts charging infrastructure usage. In this paper, the effects of the transition of PHEV to FEV is simulated by extending an existing agent-based model. Results show important effects of this transition on charging infrastructure performance.

scholarly journals Analysis of Battery Reduction for an Improved Opportunistic Wireless-Charged Electric Bus

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2866
Author(s):  
Andong Yin ◽  
Shenchun Wu ◽  
Weihan Li ◽  
Jinfang Hu
Keyword(s):  
Cost Saving ◽  
Electric Vehicles ◽  
Attractive Alternative ◽  
Wireless Charging ◽  
Charging Infrastructure ◽  
The Road ◽  
Charging System ◽  
Electric Bus ◽  
The Cost ◽  
Operation Cost

As an attractive alternative to the traditional plug-in charged electric vehicles (EVs), wireless-charged EVs have recently been in the spotlight. Opportunistically charged utilizing the wireless-charging infrastructure installed under the road at bus stops, an electric bus can have a smaller and lighter battery pack. In this paper, an improved opportunistic wireless-charging system (OWCS) for electric bus is introduced, which includes the opportunistic stationary wireless-charging system (OSWCS) and opportunistic hybrid wireless-charging system (OHWCS) consisting of stationary wireless-charging and dynamic wireless-charging. A general battery reduction model is established for the opportunistic wireless-charged electric bus (OWCEB). Two different battery-reduction models are built separately for OWCEB on account of the characteristics of OSWCS and OHWCS. Additionally, the cost saving models including the production cost saving, the operation cost saving and total cost saving are established. Then, the mathematical models are demonstrated with a numerical example intuitively. Furthermore, we analyze several parameters that influence the effectiveness of battery reduction due to the application of an opportunistic wireless-charging system on an electric bus. Finally, some points worth discussing in this work are performed.

scholarly journals A Novel Range-Extended Strategy for Fuel Cell/Battery Electric Vehicles

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Jenn-Jiang Hwang ◽  
Jia-Sheng Hu ◽  
Chih-Hong Lin
Keyword(s):  
Fuel Cell ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Diesel Generator ◽  
Control Approach ◽  
Battery Electric Vehicles ◽  
Switch Control ◽  
Driving Model ◽  
Range Anxiety ◽  
Charging Strategy

The range-extended electric vehicle is proposed to improve the range anxiety drivers have of electric vehicles. Conventionally, a gasoline/diesel generator increases the range of an electric vehicle. Due to the zero-CO2emission stipulations, utilizing fuel cells as generators raises concerns in society. This paper presents a novel charging strategy for fuel cell/battery electric vehicles. In comparison to the conventional switch control, a fuzzy control approach is employed to enhance the battery’s state of charge (SOC). This approach improves the quick loss problem of the system’s SOC and thus can achieve an extended driving range. Smooth steering experience and range extension are the main indexes for development of fuzzy rules, which are mainly based on the energy management in the urban driving model. Evaluation of the entire control system is performed by simulation, which demonstrates its effectiveness and feasibility.

scholarly journals Studying the Formation of the Charging Session Number at Public Charging Stations for Electric Vehicles

2020 ◽  
Vol 12 (14) ◽  
pp. 5571
Author(s):  
Anastasia Gorbunova ◽  
Ilya Anisimov ◽  
Elena Magaril
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Hydrocarbon Fuel ◽  
Energy System ◽  
Road Transport ◽  
Preliminary Calculation ◽  
Charging Infrastructure ◽  
Charging Stations

The energy industry is a leader of introduction and development of energy supply technologies from renewable energy sources. However, there are some disadvantages of these energy systems, namely, the low density and inconsistent nature of the energy input, which leads to an increase in the cost of the produced electric energy in comparison to the traditional energy complexes using hydrocarbon fuel resources. Therefore, the smart grid technology based on preliminary calculation parameters of the energy system develops in cities. This area should also be used to organize the charging infrastructure of electric vehicles, as the electrification of road transport is one of the global trends. As a result, a current task of the transport and energy field is the development of scientifically based approaches to the formation of the urban charging infrastructure for electric vehicles. The purpose of the article is to identify the features of the application flow formation for the charge of the electric vehicle battery. The results obtained provide a basis for building a simulation model for determining the required number of charging stations in the city, taking into account the criteria of minimizing operating costs for electric vehicle owners and energy companies.

Wireless Charging of Electric Vehicles: A Review and Experiments

2011 ◽  
Author(s):  
Chengbin Ma ◽  
Minfan Fu ◽  
Xinen Zhu
Keyword(s):  
Magnetic Resonance ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
High Efficiency ◽  
System Level ◽  
Prototype System ◽  
Wireless Charging ◽  
Charging System ◽  
Magnetic Resonance Coupling ◽  
Resonance Coupling

In this paper, the technologies for electric vehicle wireless charging are reviewed including the inductive coupling, magnetic resonance coupling and microwave. Among them, the magnetic resonance coupling is promising for vehicle charging mainly due to its high efficiency and relatively long transfer range. The design and configuration of the magnetic resonance coupling based wireless charging system are introduced. A basic experimental setup and a prototype electric vehicle wireless charging system are developed for experimental and research purposes. Especially the prototype system well demonstrates the idea of fast and frequent wireless charging of supercapacitor electric vehicles using magnetic resonance coupling. Though the idea of wireless energy transfer looks sophisticated, it is proved to be a handy technology from the work described in the paper. However, both component and system-level optimization are still very challenging. Intensive investigations and research are expected in this aspect.

scholarly journals Event-triggered H∞ position control of receiver coil for effective mobile wireless charging of electric vehicles

2017 ◽  
Vol 40 (14) ◽  
pp. 3994-4003
Author(s):  
Weihua Deng ◽  
Kang Li ◽  
Jing Deng
Keyword(s):  
Real Time ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Control Strategy ◽  
Position Control ◽  
State Feedback Control ◽  
Receiver Coil ◽  
Wireless Charging ◽  
Charging Efficiency ◽  
Event Triggered

The emergence of dynamic wireless charging technologies brings about new possibilities for on-road real-time charging of electric vehicles in solving the battery bottleneck for the mass roll-out of electric vehicles worldwide. In this new area, charging efficiency is one of the most important issues to be addressed for on-road wireless charging. While most current research mainly focuses on the electronic power design of the charging system, little has been done to improve charging efficiency through real-time mechanical control. In this paper, a switch control strategy based on an event-triggered mechanism is proposed, to improve the charging efficiency when an electric vehicle moves along a power supply road track. An [Formula: see text] control problem is formulated and sufficient stabilization criteria are derived in the form of linear matrix inequalities when the electric vehicle derails from the effective charging range. Numerical simulation confirms that the proposed control approach outperforms the general state feedback control method. The developed control strategy is applied to control a newly built electric vehicle wireless charging test platform with desirable control performance.

scholarly journals Future Policy and Technological Advancement Recommendations for Enhanced Adoption of Electric Vehicles in South Africa: A Survey and Review

2021 ◽  
Vol 13 (22) ◽  
pp. 12535
Author(s):  
Mokhele Edmond Moeletsi
Keyword(s):  
South Africa ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Combustion Engine ◽  
Technological Advancement ◽  
Charging Infrastructure ◽  
Electric Vehicle Adoption ◽  
Future Policy ◽  
High Level ◽  
Alternative Propulsion Systems

There are major concerns globally on the increasing population of internal combustion engine (ICE) vehicles and their environmental impact. The initiatives for the advancement of alternative propulsion systems, such as electric motors, have great opportunities, but are marked by a number of challenges that require major changes in policies and serious investment on the technologies in order to make them viable alternative mobility sources around the world. South Africa has struggled a lot in adopting electric vehicles among all the emerging countries. This is mostly attributed to a non-conducive environment for electric vehicle adoption. This study administered a survey consisting of Likert-scale questions in the Gauteng Province to gather information on people’s views on some of the major concerns around electric vehicle technology. The survey results demonstrated that Gauteng residents perceive electric vehicle price as the main constraint towards adoption of the technology and introduction of government policy towards addressing this challenge would be helpful. Some of the suggested interventions, such as the rollout of purchasing subsidies and tax rebates, received a high level of satisfaction among the respondents. Future initiatives that tackle issues of charging infrastructure network also received high satisfaction. Thus, there is a need for all stakeholders in the South African automotive industry to improve the enabling environment for the adoption of electric vehicles.

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