The electrical energy is transfered wirelessly through mutual induction between the primary and secondary coils. The wireless power consortium wpc was created to promote widespread market adoption of qi technology and currently has over 220 members. Inductive coupling the basics the state of wireless. Low wireless power transfer using inductive coupling. A closelycoupled inductive wireless charging system such as one adhering to the qi specification exhibits higher power transfer efficiency than a resonant system such as one adhering to the rezence specification. The system uses a charging pad and a compatible device, which is placed on top of the pad, charging via. Wireless power transmission using resonance inductive coupling prof.
Pdf wireless mobile charger using inductive coupling. Tesla lighted incandescent lamps wirelessly by resonant inductive coupling. Wireless charging technology has been around for more than 100 years, but its inclusion in devices such as apples new iphone line has given it new life. Wireless power transmission using resonance inductive coupling. The mit team demonstrated the highly resonant technique using a magnetic field to transfer energy over a midrange distance of 2 meters, and an industry was born. A wireless power transfer system using inductive coupling was designed and implemented as part of a threemember project team. The wireless power transmission technology can be broadly divided into four categories according to the transmission distance1. Energy coupling the transfer of energy magnetic coupling inductive coupling simplest wireless energy coupling is a transformer 11214 wireless power transmission 6 7. L1 design and construction of wireless charging system. Wireless mobile phones charging a comprehensive study. Wireless charging through inductive coupling is one of the new emerging technologies that will bring tremendous change in humans life.
The more loops the coil makes, the bigger the field will be. A study on drone charging system using wireless power. Oct 28, 2016 the concept of transferring power without wires, however, has been around since the late 1890s. Day by day new technologies are making our life simpler. Radiative wireless charging adopts electromagnetic waves, typically rf waves or microwaves, as a. The development of wireless charging technologies is advancing toward two major directions, i. What is wireless battery charging electronics notes. Wireless energy transfer, resonant inductive coupling, induction, resonantcircuits,ferrite. The two induction coils in proximity combine to form an electrical transformer. The wireless charging for a mobile via inductive coupling is illustrated in fig. The characteristics of each transmission technology are as follows. Efficient wireless charging system for supercapacitorbased.
Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device. Efficient wireless charging system for supercapacitorbased electric vehicle using inductive coupling power transfer technique ahsan elahi1, arslan ahmed amin2, umar tabraiz shami1, muhammad tayyab usman1 and muhammad sajid iqbal2 abstract wireless charging has become an emerging challenge to reduce the cost of a conventional plugin charging. By using 12v battery, circuit diagram receives stable voltage and current. Mathematical model the mathematical model of the wireless power transfer system through inductive coupling method is illustrated in this section. Design and construction of wireless charging system using inductive coupling r do lam mung, kyaw soe lwin, hla myo tun abstract. It makes the design and manufacture of much smaller devices without the attachment of batteries. Most of todays wireless chargers use inductive charging that is using a. Inductive coupling the basics with the history of wireless charging out of the way, the remaining is question is how does it all work. Just imagine the future with wireless electricity, where there will be no need of cables and transmission lines. Due to shortage of time there is increase in the demand of the wirelessly charged products. Meanwhile, solar cell is among the energy harvesting devices that is widely employed in many electronics application. The experimental setup of transceiver unit has been conducted.
Wireless energy transfer by resonant inductive coupling. Different models of devices can also use the same charger. Nov 02, 2014 energy coupling the transfer of energy magnetic coupling inductive coupling simplest wireless energy coupling is a transformer 11214 wireless power transmission 6 7. An image from teslas patent for an apparatus for transmitting electrical energy, 1907. Simulation of wireless power transfer using proteus software 3. In this experiment a mobile phone devices is used as an load. Nov 12, 2016 inductive coupling is among the effective method in wireless charging system to charge electronics device and reduce the constraint of the power cord or wired system. Inductive coupling wireless charger inductive power transfer technique is being utilized in various applications for transmitting power wirelessly. Us20110074344a1 wireless charger using inductive coupling. Inductive coupling primary and secondary coils are not connected with wires. Ric is the combination of both inductive coupling and resonance. Inductive coupling is preferred because of its comfortable, less use of wires and shock proof. Higher implementation cost since from the current situation receiver circuitry have to be introduced during the manufacture of mobile gargets 2.
However, for all the mobility we enjoy these days, we still tether our mobile devices to the wall at the end of the day to recharge them. Besides, the performance of wireless power transfer prototype using this method will also investigate. Design and construction of wireless charging system using. Pdf a wireless power transfer wpt using inductive coupling for mobile phone charger is studied. April 2017, volume 4, issue 04 jetir issn wireless. Inductive coupling is the most widely used wireless technology. Wireless power transfer using resonant inductive coupling. Electromagnetic field is required to transfer the energy between the two objects this is done by induction principle. Standard inductive coupling uses a frequency well below the selfresonant frequency of the inductors, therefore parasitic fig. Pdf design and construction of wireless charging system. Slower and less efficient resonant inductive coupling is the near field wireless transmission of electrical energy. By using inductive coupling or magnetic resonance coupling, iot and mobile devices, say sensors and smartphones, should typically be placed in a special charging cradle with a particular position. The applications of wireless power transfer using inductive coupling.
Wireless charger for low power devices using inductive. The above discussed wireless charging standards work on inductive and resonant technologies. Static contactless charging system using inductive. Inductive coupling uses magnetic fields that are a natural part of currents movement through wire. Finally, the wireless energy transfer system is optimized. The inductive charging circuit will be split into two parts.
Pdf low wireless power transfer using inductive coupling for. Apr 02, 2015 inductive coupling the basics with the history of wireless charging out of the way, the remaining is question is how does it all work. Wireless power charging is done by inductive coupling. The system uses a charging pad and a compatible device, which is placed on top of the pad, charging via resonant inductive coupling. Pdf wireless charger for low power devices using inductive. The transmitter coil, energized by the high frequency ac current, produces an. In this article, the design of an efficient wireless power transfer system has been presented using resonant inductive coupling technique for supercapacitorbased electric vehicle. Wireless charging with inductive coupling uses an electromagnetic field that transfers energy from the transmitter to the receiver. Apr 15, 2017 proposed applications for this type are solar power satellites, and wireless powered drone aircraft.
Greater distances between sender and receiver coils can be achieved when the inductive charging system uses resonant inductive coupling. L1 design and construction of wireless charging system using. Induction chargers typically use an induction coil to create an alternating electromagnetic field from within a charging base. Wireless inductive charging for low power devices theseus. Principle of wireless power transfer using inductive coupling. Introduction to wireless power transfer technical articles. Bending the wire into a coil amplifies the magnetic field. In this project it has been shown that it is possible to charge low power. Wireless charger for low power devices using inductive coupling. Pdf this system demonstrates the concept of wireless mobile charging system using the principle of inductive coupling. Ev charging system by wireless power transfer using inductive resonance coupling method. Inductive coupling can done in both stationary and dynamic conditions.
Experimental setup has been studied to get the performance of wpt. Whereas the former consists of three techniques inductive coupling, magnetic resonance coupling and capacitive coupling, while the latter can be further divided into directive rf. Wireless power at a glance 3 advantages simple, efficient, safe, power scalable, mature key technology challenges shield, coil alignment, good coupling disadvantages limited xyz space, difficult for multiple device operation simultaneously magnetic resonance advantages spatial freedom, multiple devices support, larger charging area. Inductive versus resonant wireless charging digikey. Wireless power transfer wpt is emerging as a practical means for electric vehicle ev charging. Of the three main approaches to wpt, resonant inductive, inductive, and capacitive coupling, capacitive power transfer cpt is proposed herein to charge an ev at a kilowatt scale power level. As no direct electrical contact is made it is considerably more convenient and also does not rely on connector contacts that can become worn and unreliable after many charge cycles. Wireless electric vehicle charging via capacitive power. Wireless power transmission using resonance inductive. Proposed applications for this type are solar power satellites, and wireless powered drone aircraft.
Mathematical analysis, simulation, and experimental implementation of the proposed charging system have been carried out. Image courtesy of reference 3 resonant wireless charging will be a good choice once chips supporting the technology. Advantages of inductive charging compared to traditional charging with cord, wireless charging introduces many benefits as follows. To start, we need to understand the basics of inductive.
The goal of this project wireless power transmission mobile charger circuit using inductive coupling is to charge a low power device using wireless power transmission. In this paper we are considering about the wireless power transmission using inductive coupling method. Efficient wireless charging system for supercapacitor. The paper will outline our design process and the logical steps we took in the experimentation and design of our circuits. Chargers of inductively coupled type are being utilized for wireless charging of ipad, mp3 player, mobile phones, and other handheld devices 34 35. The system uses coupled magnetic fields at a frequency of 606khz to transfer electromagnetic energy from a charging base to the batteries of portable devices. Wireless charging technologies can be classified into nonradiative coupling based charging and radiative rfbased charging. This paper are carried out with the theoretical studies of inductive resonance coupling method, design proposed, circuit simulation and prototype. Wireless charger for low power devices using inductive coupling a thesis submitted by tahsin, naim muhammad 08117182 siddiqui, md. Nanomagnetic s tructures for i nductive c oupling and s. Wireless mobile charger using inductive coupling ijeat. The core of the used technology is making use of the magnetic resonance concept for transmitting the power wirelessly for charging any mobile. Wireless charging works well with mobile phones, digital cameras, media players, gaming controllers and bluetooth. Wireless charging through inductive coupling could be one of the next technologies that bring the future nearer.
A wireless charger of an inductive coupling type for charging a portable device provided with a rechargeable builtin battery having a second coil, includes a housing provided with a touch pad on one surface. Wireless power transfer using resonant inductive coupling for. In some instances, this technology is also referred to as. Review paper on wireless power transmission for charging. Inductive coupling how wireless power works howstuffworks. Wireless charging system described by using the method of inductive. Energy transfer by electromagnetic induction to the receiver via inductive coupling.
By reconfiguring the transformer and altering high frequency, energy is being transferred with low energy loss and fewer demands on the primary circuit. The inductive technology is the type of compliance. Mar 03, 2017 inductive coupling is the most widely used wireless technology. Energy is sent through an inductive coupling to a battery charger.
Circuitmodel based analysis of wireless energy transfer. Wireless charging system described by using the method of inductive coupling. Recent advances in circuits wireless power transfer. It is ecofriendly which is the major necessity today. Applications that have accelerated the development of wireless energy transfer are, among others, medical implants and mobile devices such as laptops andcellphones.
Wireless mobile charger circuit using inductive coupling. Consumers are wild about the convenience of simply placing a portable device on a charging mat. In this project, oscillation circuit converts dc energy to ac. The focus of this paper is to model, design, fabricate and demonstrate two novel nanomagnetic structures for inductive coupling and emi shielding in wireless charging applications. Wireless power transmission using magnetic resonance. Design and construction of wireless charging system using inductive coupling do lam mung, kyaw soe lwin, hla myo tun abstract. In the last few years, the electric car industry has shown an increased interest in the possibility to charge vehicles wirelessly. A wireless power transfer wpt using inductive coupling for mobile phone charger is studied. Any time electrical current moves through a wire, it creates a circular magnetic field around the wire. Inductive charging uses an electromagnetic field to transfer energy between two inductive coils of wire 9. Nikola tesla was able to light electric bulbs wirelessly at his colorado springs lab using electrodynamic induction aka resonant inductive coupling.343 648 1219 660 805 349 931 1024 238 288 558 573 1019 1400 476 324 652 1161 655 846 1451 1484 1496 70 485 328 1162 1046 330 1110 1426 1551 127 175 927 349 25 51 996 1175 635 350 100 440 75 585 592 1424 499 1219 858