scholarly journals Design and Implementation of Prototype EMIR for Dynamic Charging of Electric Vehicles

2020 ◽  
Vol 9 (4) ◽  
pp. 113-117
Keyword(s):  
Electric Vehicles ◽  
High Efficiency ◽  
Wireless Power Transfer ◽  
Electrical Energy ◽  
Major Axis ◽  
Receiver Coil ◽  
Power Transfer ◽  
Wireless Power ◽  
Charging Infrastructure ◽  
The Road

Electric Vehicles (EVs) are considered to be one of the most sustainable forms of transportation. Unlike hybrid vehicles or gas-powered cars, EVs run solely on electric power. However, despite their many benefits, EVs are facing major challenges in the market today. The major challenge being its exorbitant costs as compare to fuel-based cars. And, range anxiety also proves to be a hurdle for EVs [6]. Thus, to answer all the aforementioned challenges, we proposed Electro-Magnetic Induction-based Roads (EMIR), a dynamic wireless recharging system. EVs would be able to slip into a special EMIR green lane, recharge their batteries a bit, and slip out. This technology will thus reduce the size of the EV battery, which is the most expensive part of the EV, by increasing its effective mileage and the life of the battery. This paper elaborates on the method of performing dynamic wireless power transfer through resonance based electromagnetic induction. A 163 cm long and a 30 cm wide transmitter coil was designed to transfer electrical energy to an oval-shaped receiver coil with 40 cm as its major axis and 30 cm as its minor axis. The EV battery is dynamically recharged by a charging infrastructure between the road and the vehicle while it is in motion with a high efficiency. The transmitter coils are essentially supposed to be embedded in the road but are placed over the road for visual purposes. The receiver coil is placed under the EV. When the EV goes over the electric road, it gets dynamically recharged. A prototypic EMIR was successfully designed to demonstrate the Dynamic Wireless Power Transfer (DWPT) for EVs.

scholarly journals MAGNETIC RESONANCE COUPLING BASED WIRELESS POWER TRANSFER FOR CONTACTLESS CHARGING OF ELECTRIC VEHICLES

2013 ◽  
pp. 36-39
Author(s):  
SHAKTIRAJ KUMAR CHAGANTY ◽  
S.SIVA PRASAD
Keyword(s):  
Electric Vehicles ◽  
High Efficiency ◽  
Wireless Power Transfer ◽  
Electrical Energy ◽  
Power Transfer ◽  
Wireless Power ◽  
Air Gaps ◽  
Electromagnetic Resonance ◽  
Magnetic Resonance Coupling ◽  
Resonance Coupling

The availability of a convenient charging mechanism will help greatly in dispersal of Electric Vehicles more widely. The concept of Wireless transfer of electrical energy will make this possible. The feasibility of wireless power transfer for Electric Vehicles by electromagnetic resonance coupling is investigated in this paper. The experiment is carried out on small sized antennas that can be equipped at the bottom of a vehicle. The efficiency characteristics of power transmitted wirelessly are analyzed by varying frequency of power, gap between receiving and transmitting coils and power to be transmitted. The feasibility of wireless power transfer with large air gaps and high efficiency by small sized antennas is proposed and analyzed in this paper.

scholarly journals CONTACTLESS ELECTRIC VEHICLE CHARGING USING MAGNETIC RESONANCE COUPLING METHOD.

2014 ◽  
pp. 112-115
Author(s):  
SHAKTIRAJ KUMAR CHAGANTY ◽  
S.SIVA PRASAD
Keyword(s):  
Electric Vehicles ◽  
High Efficiency ◽  
Wireless Power Transfer ◽  
Electrical Energy ◽  
Power Transfer ◽  
Wireless Power ◽  
Air Gaps ◽  
Electromagnetic Resonance ◽  
Resonance Coupling ◽  
Charging Mechanism

A convenient charging mechanism will be of great help in dispersal of Electric Vehicles more widely. The concept of Wireless transfer of electrical energy will make this possible. The feasibility of wireless power transfer for Electric Vehicles by electromagnetic resonance coupling is investigated in this paper. Using electromagnetic resonance coupling, large amount of power can be transmitted over large air gaps. The experiment is carried out on small sized antennas that can be equipped at the bottom of a vehicle. The efficiency characteristics of power transmitted wirelessly are analyzed by varying - frequency of power, gap between receiving and transmitting coils and power to be transmitted. Power transmission efficiencies at resonant frequencies are investigated. Wireless charging mechanism will make Electric Vehicles more user friendly and also reduce Carbon emissions. The feasibility of wireless power transfer with large air gaps and high efficiency by small sized antennas is proposed and analyzed in this paper.

scholarly journals Dynamic Wireless Power Transfer Charging Infrastructure for Future EVs: From Experimental Track to Real Circulated Roads Demonstrations

2019 ◽  
Vol 10 (4) ◽  
pp. 84 ◽  
Author(s):  
Stéphane Laporte ◽  
Gérard Coquery ◽  
Virginie Deniau ◽  
Alexandre De Bernardinis ◽  
Nicolas Hautière
Keyword(s):  
Electric Vehicles ◽  
Wireless Power Transfer ◽  
Future Generation ◽  
Road Transport ◽  
Future Research ◽  
Power Transfer ◽  
Wireless Power ◽  
Mechanical Contact ◽  
Charging Infrastructure ◽  
System Characterization

In a context of growing electrification of road transport, Wireless Power Transfer (WPT) appears as an appealing alternative technology as it enables Electric Vehicles (EVs) to charge while driving and without any mechanical contact (with overhead cables or rails in the ground). Although the WPT technology background dates from the end of 20th century, recent advances in semiconductor technologies have enabled the first real demonstrations. Within the FABRIC European project, the French research Institute VEDECOM and its partners implemented a whole prototype wireless power transfer charging infrastructure. The first demonstrations of Inductive WPT in different real driving conditions (up to 20 kW, from 0 to 100 km/h, with one or two serial vehicles) were provided. This paper describes the prototype equipment and its instrumentation and provides the system characterization results. The future of the Inductive WPT technology is further discussed considering its different technical and economic challenges. In parallel, how this technology could be part of future generation road infrastructures is discussed. Future research and demonstration steps are presented in the conclusion.

scholarly journals Capacitive Coupling Wireless Power Transfer with Quasi-LLC Resonant Converter Using Electric Vehicles’ Windows

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 676 ◽  
Author(s):  
KangHyun Yi
Keyword(s):  
Electric Vehicles ◽  
High Efficiency ◽  
High Capacity ◽  
Wireless Power Transfer ◽  
Capacitive Coupling ◽  
Power Transfer ◽  
Wireless Power ◽  
Very High Frequency ◽  
Large Power ◽  
Coupling Capacitor

This paper proposes a new capacitive coupling wireless power transfer method for charging electric vehicles. Capacitive coupling wireless power transfer can replace conventional inductive coupling wireless power transfer because it has negligible eddy-current loss, relatively low cost and weight, and good misalignment performance. However, capacitive coupling wireless power transfer has a limitation in charging electric vehicles due to too small coupling capacitance via air with a very high frequency operation. The new capacitive wireless power transfer uses glass as a dielectric layer in a vehicle. The area and dielectric permittivity of a vehicle’s glass is large; hence, a high capacity coupling capacitor can be obtained. In addition, switching losses of a power conversion circuit are reduced by quasi-LLC resonant operation with two transformers. As a result, the proposed system can transfer large power and has high efficiency. A 1.6 kW prototype was designed to verify the operation and features of the proposed system, and it has a high efficiency of 96%.

scholarly journals Wireless Power Charging in Electrical Vehicles

2021 ◽  
Author(s):  
Nassim Iqteit ◽  
Khalid Yahya ◽  
Sajjad Ahmad Khan
Keyword(s):  
Electrical Energy ◽  
Industrial Applications ◽  
Maximum Efficiency ◽  
Receiver Coil ◽  
Power Transfer ◽  
Manufacturing Companies ◽  
Wireless Power ◽  
The Road ◽  
Extensive Information ◽  
Ev Charging

Wireless Power Transfer (WPT) technology can transfer electrical energy from a transmitter to a receiver wirelessly. Due to its many advantages, WPT technology is a more adequate and suitable solution for many industrial applications compared to the power transfer by wires. Using WPT technology will reduce the annoyance of wires, improve the power transfer mechanisms. Recently, the WPT gain enormous attention to charging the on-board batteries of the Electric Vehicle (EV). Several well-known car manufacturing companies start efforts to adopt WPT technology and enhance its features. Therefore, WPT can be achieved through the affordable inductive coupling between two coils named a transmitter and a receiver coil. In EV charging applications, transmitter coils are located underneath the road, and receiver coils are installed in the EV. The inductive WPT of resonant type is generally applied to medium-high power transfer applications like EV charging because it achieves better energy efficiency. In this chapter, various WPT technologies are discussed and tested in EV wireless charging applications. Furthermore, extensive information is given to developing an advanced WPT technology that can transfer maximum power by achieving maximum efficiency.

scholarly journals High Efficiency with Small Coils Area Ratio of Magnetic Resonant Wireless Power Transfer System

2018 ◽  
Vol 2 (6) ◽  
Author(s):  
Thabat Thabet ◽  
John Woods
Keyword(s):  
High Efficiency ◽  
Wireless Power Transfer ◽  
Area Ratio ◽  
Receiver Coil ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Flux Lines ◽  
Transmitter Coil ◽  
Wireless Power Transfer System

Wireless power transfer using magnetic resonance requires cutting flux lines generated from the transmitter coil by the receiver coil. This letter shows that an exact one to one coil area ratio or CAR (i.e. primary relative to secondary) is not a pre-condition to obtain high efficiency. It is also shown that high efficiency can be achieved for relatively small CARs by adjustment of the turns ratio. We go on to show that it is possible to achieve a higher energy efficiency than the coil area ratio and the associated flux cut would dictate.

scholarly journals A case Study on wired and Wireless charger standards in India for Electric Vehicle Application

2019 ◽  
Vol 87 ◽  
pp. 01017
Author(s):  
Shivanand M N ◽  
Y. Maruthi ◽  
Phaneendra Babu Bobba ◽  
Sandeep Vuddanti
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Energy Demand ◽  
Wireless Power Transfer ◽  
International Electrotechnical Commission ◽  
Power Transfer ◽  
Wireless Power ◽  
Transfer Factors ◽  
Charging Infrastructure ◽  
Ev Charging

India has taken major step in adopting the electric vehicle by means of FAME Scheme (Fast Adoption and Manufacturing of Electric Vehicles), a government initiative. ARAI (Automotive Research Authority of India) and DHI (Department of Heavy Industry) have published standardization protocol for both EV charging infrastructure. Many of those standards are derived from the SAE (Society of Automotive Engineers) Internationals and IEC (International Electrotechnical Commission). USA, Europe and China are also following the same standards to build the EV (Electric Vehicle) infrastructure. This paper provides the Indian standards to build EV charging infrastructure and comparing it with other countries. Glimpses on energy demand for electric vehicles in Indian market. It also provides the demanding wireless power transfer technology in EV’s. Status of Standards provided by the industry on wireless power transfer. Factors that are necessary to be considered before drafting the standards for WPT.

Shaped Magnetic Field in Resonance Technology and its Application to Transportation System

2015 ◽  
Author(s):  
Dong-Ho Cho ◽  
Nam Pyo Suh ◽  
Uooyeol Yoon ◽  
Guho Jung
Keyword(s):  
Magnetic Field ◽  
Electric Vehicles ◽  
High Speed ◽  
High Efficiency ◽  
Low Cost ◽  
Power Grid ◽  
High Capacity ◽  
Power Transfer ◽  
Charging Infrastructure ◽  
The Road

KAIST has developed the Shaped Magnetic Field in Resonance (SMFIR) technology that transfers a large amount of energy to electric vehicles when they are running or stationary. The wireless charging SMFIR technology provides a solution to the commercialization barriers of electric vehicles such as the problems of batteries and charging infrastructure. Using 20-kHz wireless power transfer system based on the SMFIR technology, our eco-friendly On Line Electric Vehicle (OLEV) bus was wirelessly powered by 100 kW through a power grid embedded under the road. On the other hand, using high-capacity, high-efficiency and low-cost 60kHz power supply and pickup systems based on the SMFIR technology, tram and high speed train were wirelessly powered by 180 kW and 1 MW through a power grid built in rail roads, respectively. The commercial OLEV tram has been operated commercially from July 2011 in Seoul National Grand Park. Also, the OLEV shuttle bus has been operated for convenience of students and faculty members at KAIST campus since Oct. 2012. In addition, the world’s first intra-city OLEV bus with 100 KW pickup capacity has been operated commercially at Gumi city from March 2014. Then, airgap is about 20 cm and maximum power transfer efficiency is 85 %.

Focus on OLEV

2019 ◽  
pp. 323-345
Author(s):  
Michela Longo ◽  
Morris Brenna ◽  
Federica Foiadelli
Keyword(s):  
Electric Vehicles ◽  
High Power ◽  
Wireless Power Transfer ◽  
Air Gap ◽  
Power Transfer ◽  
Wireless Power ◽  
The Road ◽  
Charging Station ◽  
At Home

Many studies on EVs have been performed in recent years, and various EVs have been developed, like pure battery EVs, hybrid EVs, battery replace EVs, or plug-in hybrid EVs, that use lithium (or polymeric) batteries that can be recharged at home or at a charging station. The biggest challenge to the commercialization of the EV is the battery. The battery problems on electric vehicles can be solved by using roadway-powered electric vehicles (RPEVs). RPEVs do not require heavy and large batteries because they directly get power while moving on a road. These vehicles can take power either in a wired or wireless way. Thus, various wireless power transfer systems (WPTSs) have been developed for RPEVs, and as consequence, new types of RPEV have been developed. WPTS for RPEVs should be able to deliver high power efficiently through a small air gap for avoiding collision between the road and the vehicle.

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