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 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 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 Development of wireless charging system along with power line communication used in Electric Vehicles

2019 ◽  
Vol 87 ◽  
pp. 01021
Author(s):  
Sai Varun Alapati ◽  
Indusaiteja Nadella ◽  
Phaneendra Babu Bobba ◽  
Madhur Deo Upadhayay
Keyword(s):  
Magnetic Resonance ◽  
Electric Vehicles ◽  
Wireless Power Transfer ◽  
Power Line ◽  
Simulation Software ◽  
Power Line Communication ◽  
Power Transfer ◽  
Wireless Power ◽  
Charging System ◽  
Resonance Coupling

Charging an Electric Vehicle wirelessly is the latest technology being developed for the electric vehicles replacing the traditional way of plugging to the supply. In this paper, authors explained how to integrate Power Line Communication along with wireless power transfer in EV. The entire system is implemented in ADS simulation software. We are adapting to magnetic resonance coupling method for wireless power transfer in EV. The overall ideology of the project is to design an innovative system which involves higher power transfer and implement smart communication system between vehicle and the grid while following the latest magnetic resonance charging standards.,

Study on Topology Design of Wireless Power Transfer for Electric Vehicle Based on Magnetic Resonance Coupling

2011 ◽  
Vol 308-310 ◽  
pp. 1000-1003 ◽  
Author(s):  
Hao Qiang ◽  
Xue Liang Huang ◽  
Lin Lin Tan ◽  
Hui Huang
Keyword(s):  
Magnetic Resonance ◽  
Electric Vehicle ◽  
High Efficiency ◽  
Wireless Power Transfer ◽  
High Sensitivity ◽  
Topology Design ◽  
Power Transfer ◽  
Wireless Power ◽  
Magnetic Resonance Coupling ◽  
Resonance Coupling

Wireless power transfer (WPT) is required for the diffusion of Electric Vehicle (EV) because it makes possible the process of automatically charging EV. Magnetic resonance coupling is a new technology for WPT, which can transfer a large amount of energy with high efficiency in middle distance. In this paper the topology design of WPT for EV by using this technology is investigated. Through theoretical analysis we obtain expressions of optimal efficiency with different topologies based on equivalent circuits and define a condition criterion, which is related with load resistance, transmission distance, resonance frequency and coil size. According to the condition criterion we can design the appropriate topology easily to guarantee optimal transmission efficiency. Finally, simulations and experiments show that the defined condition criterion has high sensitivity and the proposed method of designing topology is effective and feasible.

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%.

Rollable metamaterial screen for magnetic resonance coupling-based high-efficiency wireless power transfer

2020 ◽  
pp. 1-9
Author(s):  
Woosol Lee ◽  
Yong-Kyu Yoon
Keyword(s):  
Magnetic Resonance ◽  
High Efficiency ◽  
Wireless Power Transfer ◽  
Network Analyzer ◽  
Power Transfer ◽  
Wireless Power ◽  
Magnetic Resonance Coupling ◽  
Power Transfer Efficiency ◽  
Resonance Coupling ◽  
The Magnetic Field

Abstract This paper presents a rollable metamaterial screen for high-efficiency wireless power transfer (WPT) system based on magnetic resonance coupling, which operates at 4.5 MHz. The rollable metamaterial screen with a fully expanded area of 750 mm × 750 mm is located in the middle between transmitter and receiver coils and focuses the magnetic field and, by such a way, significantly improves power transfer efficiency (PTE). The metamaterial screen can be rolled up, e.g. onto the ceiling when it is not used, and thus does not require any designated space for the screen saving space. A WPT system with the rollable metamaterial screen is designed, fabricated, and characterized. Improved PTE is qualitatively and quantitatively verified by light bulb experiments and vector network analyzer measurements. The PTE of the WPT system with the metamaterial screen increases from 36 to 58.52% and 10.24 to 31.36% for the distances between the transmitter and receiver coils 100 and 150 cm, respectively. The effects of lateral and angular misalignments on the PTE of the WPT system are also studied. Obtained results show that the rollable metamaterial screen improves the PTE even at the misaligned condition.

Sign in / Sign up

Export Citation Format

Share Document