A New Methodology for Contactless Energy System Using Inductive Coil Positioning Flexibility

This paper portrays a system, Contactlesstransmission of electrical energyfrom a power source to an electrical load without interconnecting conductor. As of late, expanded remote power exchange frameworks innovation exploration has prompted frameworks with higher effectiveness. Contactless transmission is helpful in situations where interconnecting wires are badly arranged, incomprehensible or perilous. These days electrically worked hardware's are associated with the supply by means of plugs & sockets, however can be hazardous or have constrained life in the vicinity of dampness. In dangerous areas and in submerged applications, the Contactless EnergyTransmission System(CETS), by which electrical energy may be transmitted, without electrical association or physical contact, through nonmagnetic media of low conductivity. The CETS has been utilized to exchange up to 5kW over a 10-mm crevice, utilizes high-frequency attractive coupling and empowers module power associations will be made in dangerous natural conditions without the danger of electric shock, short-circuiting, or starting. With contactless Inductive Power Transfer (IPT), it is conceivable to exchange electrical energy to stationary or mobile consumers without contacts, links, or slip rings, another precise and particular configuration displayed in this paper

A novel single-layer winding array and receiver coil structure for contactless battery charging systems with free-positioning and localized charging features

The planar contactless battery charging system is an emerging technology that can be applied to a wide range of portable consumer electronic products. Beginning with a brief historical background, this paper presents a new single-layer winding array and receiver coil structure with cylindrical ferrite cores for planar contactless battery charging systems. Complying with the Qi standard, this design enables multiple devices to be placed and charged simultaneously on the wireless charging pad in a free-positioning manner. The charging flux is totally localized within the covered area between the selected primary winding and the secondary winding inside the load. The electromagnetic characteristics of such winding design are studied in finite-element analysis and confirmed by practical implementation. © 2010 IEEE.published_or_final_versionlink_to_subscribed_fulltex

Independent primary-side controller applied to wireless chargers for electric vehicles

Electric vehicles rely on batteries that need to be frequently recharged. As an alternative to conductive charging, wireless chargers provide a higher reliability to pollution and electric failures and they also extend the situations and places where the recharge could be available without user’s intervention (e.g. parking spaces, on-road). In order to optimize the performance of a wireless charger, its configuration should be dynamically adapted to the varying battery’s electrical features. Towards this goal, controllers are incorporated into the system to modify the behavior of some switching devices belonging to the power electronics blocks. This paper presents a controller that acts in the DC/DC structure placed in the primary side. As a novelty, the controller infers the instantaneous battery power demands by exclusively measuring voltage and current in the primary side. In this way, there is no need for communicating (via wired or wireless links) the primary and the secondary sides. The simulation results show the ability of the controller to adapt to different battery states.Universidad de Málaga. Campus de Excelencia Internacional Andalucia Tec

Design and analysis of energy transfer system through Inductive Power Transfer (IPT) connected to a solar panel

In this article, Inductive Power Transfer (IPT) system fed by a suggested panel and its various stages of design and analysis are described. Typically, IPT with its separate control system, and solar panel with its separate Maximum power point tracking (MPPT) unit works together to achieve maximum efficiency. This use of two separate converters reduces the efficiency and reliability of the entire system. Therefore, a system is recommended so that while eliminating the MPPT unit and considering design considerations, we can make MPPT function occur in the IPT control circuit. Simulation of the conventional and the proposed system shows that with removal of MPPT, the system efficiency increases from 90% to 93%

A flexible cooking zone composed of partially overlapped inductors

Domestic induction cookers are evolving from fixed cooking areas to flexible surfaces in such a way that the pot can be placed at any position. This implies the use of a larger number of reduced-sized inductors, which present a lower efficiency. As a solution to increase the efficiency while maintaining the flexibility, we propose the use of partially overlapped inductors of a larger size. This concept is currently in use in wireless power transfer systems, where the transmitter arrangement consists of several overlapped coils. The aim of this paper is to evaluate this concept applied to domestic induction heating appliances, with special emphasis in analyzing the effects of introducing the multicoil system with dissipative media. Moreover, the losses in the winding will be studied in detail. The system will be prototyped and tested, delivering up to 3.7 kW

Control of wireless power transfer system for dynamic charging of electric vehicles

L'abstract è presente nell'allegato / the abstract is in the attachmen

Automatische Abstimmung der Sekundärseite eines dreiphasigen Systems zur berührungslosen induktiven Energieübertragung

In the higher power range, three-phase inductive power transfer is an auspicious option to supply electric vehicles for local public transport. Decreases in efficiency and power transfer capability caused among others by positional misalignment and temperature cannot be completely avoided during operation. An automatic retuning of the system directly faces the remaining effects of these disturbing ascendancies and ensures continuous operation in the optimal operating point

A Comparative Study of Power Supply Architectures In Wireless Electric Vehicle Charging Systems

Wireless inductive power transfer is a transformational and disruptive technology that enables the reliable and efficient transfer of electrical power over large air gaps for a host of unique applications. One such application that is now gaining much momentum worldwide is the wireless charging of electric vehicles (EVs). This thesis examines two of the primary power supply topologies being predominantly used for EV charging, namely the SLC and the LCL resonant full bridge inverter topologies. The study of both of these topologies is presented in the context of designing a 3 kW, primary side controlled, wireless EV charger with nominal operating parameters of 30 kHz centre frequency and range of coupling in the neighborhood of .18-.26. A comparison of both topologies is made in terms of their complexity, cost, efficiency, and power quality. The aim of the study is to determine which topology is better for wireless EV charging