Recent advances in circuits wireless power transfer through. Pdf fundamentals of inductively coupled wireless power. Recent advances in circuits wireless power transfer. Power system voltage stability at any point of time, a power system operating condition should be stable, meeting various operational criteria, and it should also be secure in the event of any credible contingency. Stability and control of uncertain icpt system considering. Wireless power transfer is a new technology to transfer electrical. In particular, the control of multiple pickup coils and the number of such pickups that may be used. Stability and control of inductively coupl ed power transfer systems, iee proceedings. Inductively coupled, mmsized, single channel optical.
This cited by count includes citations to the following articles in scholar. Circuitmodel based analysis of wireless energy transfer. Inductive power transfer offers the capability to inductively contactless transmit power in moving components. A phasecontrolled variable inductor is dynamically swithched to detunetune the resosant circuit according to the load resistance of the power pickup. The technology could be used as the basis for robust inductive plugs in food processing facilities or the chemical industry or as a simpler and safer way to provide electricity to agricultural machinery attachments that need robust. Inductive power transfer ipt powering our future grant covic professors grant covic and john boys power electronics research group department of electrical and computer engineering the university of auckland, new zealand. Capacitively coupled contactless power transfer ccpt technology has been proposed as a new contactlesswireless power transfer method recently. High performance radio frequency generator technology for the. In the first part of the work, the theoretical aspects of the wireless power system are handled.
Power systems dynamics and stability in part i of these notes the two. Magneticallycoupled resonant wireless power transfer mcrwpt system with lcls structure is developing for higher transmission characteristics. Power transfer capability and bifurcation phenomena of loosely coupled inductive power transfer systems. Access the iel ieeeiet electronic library on ieee xplore.
Efficient inductively coupled resonant power transfer for an implantable electroencephalography recording device a thesis presented by andrew e. However, there is very limited understanding and experience in the ccpt. A loosely coupled planar wireless power transfer system. A highefficiency wireless power transfer system which is capable of supporting more than one receiver using class e operation for transmitter via inductive coupling has been designed and fabricated. This study presents a quasi sliding mode output control strategy based on feedforward compensation in an improved inductively coupled power transfer icpt system. Pdf inductively coupled power transfer icpt for electric vehicle. Professors grant covic and john boys power electronics research group department of electrical and computer engineering the university of auckland, new zealand. However, the influence of the crosscoupling of the receiving coil is neglected. Transferred power control for icpt pickups utilizing dynamically switched. Pdf selected resonant converters for ipt power supplies. Modelling and analysis of a capacitively coupled contactless.
Inductively coupled power transmission icpt is becoming an accepted technique for transferring power from an extended loop track to a number of galvanically isolated movable pickup coils. Us5155547a power control circuit for inductively coupled. Conversely, instability means a condition denoting loss of synchronism or falling out of step. Wireless power transfer can make a remarkable change in the field. The primary control of a power system is carried out at generator end, whereas secondary control is through power ow control at transmission end 18. An universal, inductively coupled battery charger for robot power supplies monique ryan monique. Methods, systems, and devices relating to wireless power. The load current control of inductively coupled power transfer. Fundamentals of inductively coupled wireless power.
Stability and control of inductively coupled power transfer. This new technology can be used in various wireless power transfer applications with different specifications, necessities, and restrictions such as in electric vehicles and consumer electronics. Power system analysis power flow analysis fault analysis. In production, logistics, elevators or amusement parks, ipt is the first choice as a modern systems solution. Hopf bifurcation study of inductively coupled power. Stability and control of inductively coupled power transfer system article in iee proceedings electric power applications 1471.
Sykulski school of electronics and computer science, university of southampton, southampton, uk abstract. The coupling of energy occurs by mutual inductance. The ability of the power system to return to its normal or stable conditions after being disturbed is called stability. Firstly, the model of the system is set up via a time domain method. The present work reports an analysis of inductive coupled power transfer systems behaviour applied to electrical bikes. An universal, inductively coupled battery charger for. Pdf the objective of this chapter is to study the fundamentals and operating principles of inductively coupled wireless power. Green, stability and control of inductively coupled power transfer systems, iee. Efficient inductively coupled resonant power transfer for. Us4836344a roadway power and control system for inductively. Typically, inductively coupled power systems will transfer power effectively from one coil to the other in the range of the diameter of the larger coil. In order to analyze the nonlinear phenomena of the bifurcation and chaos caused by the switching of nonlinear switching devices in inductively coupled power transfer icpt systems, a jacobian matrix model, based on discrete mapping numerical modeling, is established to judge the system stability of the periodic closed orbit and to study the nonlinear behavior of hopf bifurcation in. In our research work, a technique is devised for a wireless power transfer through inductive. By employing electric field as the energy transfer medium, ccpt has advantages of being able to transfer power across metal barriers and reduced electromagnetic interference.
Statespace models for assisting loosely coupled inductive. A multiple frequency plasma torch activation circuit includes a system driver circuit with a pair of different frequency sources and a selector switch which allows one of the sources to be coupled to a splitter assembly which applies signals to a pair of independent power amplifiers having their outputs applied to a combiner assembly and to the plasma torch inductor. For example, at an excitation frequency of 5 mhz, the near field criterion is calculated based on certain assumptions at up to 9. Design of magnetic coupler for wireless power transfer mdpi.
This paper studies the problem of robust exponential stability for uncertain inductively coupled power transfer icpt system considering time. Please click on the logo of the service to which you have a subscription, or click any logo to obtain payperview access access the iet digital library. Conductixwampfler inductive power transfer ipt ipt stands for inductive power transfer a universal, contactless power and data transfer system. Detailed in this paper is a multiport power electronics interface which serves as an energy router for onboard electric and plugin hybrid electric vehicles with inductively coupled power transfer icpt and hybrid energy storage systems hess. Contactless transfer offers a number of benefits in a variety of applications. Theory of image impendence matching for inductively coupled power transfer systems, ieee. Ipt control technique with only a single controller 24 have. Operation of icpt systems is discussed and limiting factors in their operation are investigated. Roadway electrification using inductive power transfer ipt arpae. Transient stability analysis of power system with photovoltaic systems installed 897 in this paper, the impact of largescale gridconnected pv with or without lvrt capability on the power system transient stability is discussed based on the numerical simulation analysis using pscademtdc software.
Power system stability best engineering colleges in india. Request pdf stability and control of inductively coupled power transfer system inductively coupled power transmission icpt is becoming an accepted. Accurate steadystate modeling of capacitivecoupling. As many industrial and domestic applications require power with no. Finite element assisted study of magnetic configurations of flat pickups for inductively coupled power transfer systems. Thierry van cutsem power system stability and voltage stability. Introduction inductive power transfer ipt 1 is a technology, which is now recognized as an efficient and acceptable technique for contactless power transfer across an air gap through weak magnetic coupling. Design and control of typical ipt systems have been well known and reported in literature 23. An electrical modular roadway system adapted for transmitting power to and controlling inductively coupled vehicles traveling thereon. A highefficiency wireless power transfer system which is capable of supporting more than one receiver using class e operation for transmitter via inductive coupling has. A quasi sliding mode output control for inductively.
It is always important to have a stable system under full range of load and magnetic coupling variations in practical applications. Integration of inductively coupled power transfer and. Stability and control of inductively coupled power transfer system. From the femsimulation, over power electronics analysissimulation and mechanical integration to the reali zation of complete prototypes. Apr 26, 2019 magnetically coupled resonant wireless power transfer mcrwpt system with lcls structure is developing for higher transmission characteristics. The system requires no complex external control system but relies on its natural impedance response to achieve the desired power. The transmission characteristics are analyzed first based on. Wireless power transfer is one of the simplest and inexpensive ways of charging as it eliminate the use of conventional copper cables and current carrying wires. The voltage regulator is used to stabilize and control the dc voltage level according to the required load voltage. An universal, inductively coupled battery charger for robot. Modeling analysis of inductively coupled power transfer systems based on current source resonant converter. Development of a wireless power transfer system using. Stability and control of inductively coupled power.
Power system stability can be improved by using dynamic controllers as excitation systems, power system stabilizers and facts devices. An inductive linkbased wireless power transfer system for. It provides a rapid charging process, and optimized power transmission by frequency variation and control over the loss due to low magnetic coupling. Magnetic design considerations to improve nonlinear characteristics of inductively coupled power transfer systems d. Product overview inductive power transfer ipt nductix. However, practical cpt systems often have crosscoupling between coupling plates of the capacitivecoupling interface, which makes accurate system analysis and compensation design tedious and complicated. More often than not, the power generation systems are subjected to faults of this.
Finite element assisted study of magnetic configurations of. Stability and control of inductively coupled power transfer systems abstract. Kacprzak department of electrical and computer engineering, university of auckland, auckland, new zealand, and j. Fundamentals of inductively coupled wireless power transfer. Historically, there have always been two main approaches to the control and matching of rf. Study of frequency stability of contactless power transmission systemj. Modeling analysis of inductively coupled power transfer. The system requires no complex external control system but relies on its.
Statespace models for assisting loosely coupled inductive power transfer systems analysis. Inductively coupled power transfer how is inductively coupled power transfer abbreviated. Introduction design criteria and control algorithm is presented in sections 8 and 9. In order to reduce the loss of semiconductor switches, a high frequency transformer has been introduced to change the impedance. The parameter identification of the inductively coupled power transfer icpt system is of great significance for the high performance control, efficiency optimization and safe operation of the system.
Stability and control of inductively coupled power transfer systems. Hopf bifurcation study of inductively coupled power transfer. The design approach of the system is also presented in this paper. Design and control of inductive power transfer system for. The stability of an rf generator greatly depends on its ability to adjust for changing conditions in the plasma due to differing samples or sample matrices by changing the power conditions to suit the variations this is known as matching. This wireless power transfer uses inductive coupling under resonance with. In particular, the study has focused on the design and stability of the coupled coils of this system. Operation of icpt systems is discussed and limiting factors in their. Stability and control of inductively coupled power transfer systems, iee proceedings electric power applications, vol. Capacitive power transfer cpt technology can achieve wireless power transfer based on electric field coupling. Magnetic design considerations to improve nonlinear. The design and optimization of a wireless power transfer system. The system comprises a plurality of elongated, electrically connected inductor modules arranged in an aligned end to end spaced apart order to form a continuous vehicle path. Power system stability and control by prabha kundur.
Wireless power transfer for electric vehicles hunter wu, ph. Boys, design and optimisation of magnetic structures for lumped inductive power transfer systems, in ieee energy. The ones marked may be different from the article in the profile. Stability and control of inductively coupled power transfer systems, iee proceedings electric power applications. Magnetic design we use a computerbased system design algorithm. Inductive power transfer ipt powering our future grant covic. Each module has a magnetic core and power windings which generate a magnetic field. A wireless power transfer system using an inductive link has been demonstrated for implantable sensor applications.
The stability of an interconnected power system is its ability to return to normal or stable operation after having been subjected to some form of disturbance. Disturbances of the system may be of various types like sudden changes of load, the sudden short circuit between line and ground, linetoline fault, all three line faults, switching, etc. Inductively coupled power transmission icpt is becoming an accepted technique for transferring power from an extended loop track to a number of. Inductively coupled power transfer how is inductively. Transferred power control for icpt pickups utilizing. Resonant inductive coupling or magnetic phase synchronous coupling is a phenomenon with inductive coupling where the coupling becomes stronger when the secondary loadbearing side of the loosely coupled coil resonates. Poor coordination between various control and protective systems. A quasi sliding mode output control for inductively coupled. Resonant inductive coupling is also being used in wireless power systems for. This paper presents a method to maintain the output voltage constant under variable load resistance for icpt power pickups. Boys, design and optimisation of magnetic structures for. This concept is an emerging technology, and in coming years the distance of power transfer can be enhanced as the research across the world is still going on.
The ability of a synchronous power system to return to stable condition and maintain its synchronism following a relatively large disturbance arising from very general situations like switching on and off of circuit elements, or clearing of faults, etc. This paper improves the resonance topology structure by adding a compensation capacitor in the transmitting side and proposes a parameter configuration method with equivalent impedance. Finite element assisted study of magnetic configurations. High performance radio frequency generator technology for.
A resonant transformer of this type is often used in analog circuitry as a bandpass filter. Wireless power transfer system design and analysis for e. Jan 02, 2019 the ability of a synchronous power system to return to stable condition and maintain its synchronism following a relatively large disturbance arising from very general situations like switching on and off of circuit elements, or clearing of faults, etc. A brief discussion over design process and control of icpt system has been added. Iee proceedingselectric power applications, 1471, 37. The objective of this chapter is to study the fundamentals and operating principles of inductively coupled wireless power transfer icwpt systems. Efficient inductively coupled resonant power transfer for an. Inductively coupled power transfer icpt for electric. Mevludin glavic university of liege electrical engineering and computer science department the demos included and the material in part are provided by dr. Czarnecki to the department of electrical and computer engineering in partial fulfillment of the requirements for the degree of master of science in electrical engineering northeastern university. The parameter identification of the inductively coupled power transfer icptsystem is of great significance for the high performance control, efficiency optimization and safe operation of the system. The inductively coupled power transfer icpt method is known worldwide for its high power transfer in many applications, mainly in electric vehicles. The existing body of literature on hesss lacks a unified controller and modular, flexible structure as well as integration of icpt.