Selection of maximum power transfer region for resonant inductively coupled wireless charging system

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The design guidelines have been proposed for achieving efficient wireless Electric Vehicle (EV) charging system under non-ideal practical scenarios. The effects of operating parameters have been investigated by addressing the fundamental hurdle to the widespread usage of magnetic resonance coupling (MRC) based wireless EV charging system. From both experimental and simulated results, it has been perceived that the power transfer efficiency (PTE) depreciates rapidly as the charging condition deviates from the ideal one. It is observed that PTE can be managed to enhance from the deteriorated value to an acceptable level through proper consideration of separation air gap of the charging coils, frequency of operation with acceptable horizontal offsets, suitable coil models, position of metallic object, and coil properties. To maintain the maximum PTE even under non-ideal scenario, an automated frequency tuning method has also been delineated. The corroborated experimental and simulated results can provide a complete strategic plan in the design of an efficient practical wireless power transfer system to be utilized for EV charging system.

Section: Introductionmentioning

confidence: 99%

Impact of Functioning Parameters on the Wireless Power Transfer System Used for Electric Vehicle Charging

Sahany¹,

Biswal²,

Kar³

et al. 2019

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“…This necessitates the pursuit of wireless energizing technique which is cordless, reliable, safer, smarter, and environmental friendly [9,10]. Although the inductive coupling based wireless energization technique is acceptable for powering the sensors, but not widely adopted because of its coil configuration, large dimension and low efficiency [11], providentially, the magnetic resonant coupling based wireless technique goes to the forefront recently and also has been regarded as a viable method for powering electronic devices [12][13][14][15][16]. However, to expand the usability of the wirelessly energized implantable electronic devices for continuous patient monitoring in inaccessible and outdoor areas derelict of grid power supply, renewable energy based energizing system can be a partial and accepted solution [17].…”

Section: Introductionmentioning

confidence: 99%

Photovoltaic Driven Resonant Wireless Energy Transfer System for Implantable Electronic Sensor

Swain¹,

Patnaik²,

Halder³

et al. 2019

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In order to energize the biomedical implantable electronic devices wirelessly for in vivo health monitoring of patients in an isolated, outdoor and inaccessible environment, an alternate driving energy source is highly desirable. In pertinent to this, a photovoltaic driven wireless energizing system has been explored. The system is designed to convert solar energy to a high frequency energy source so as to facilitate energy transfer through resonant inductive link to the automated bio-medical sensing system allied with the receiver unit. The received power is observed to be 286 mW for the coil separation gap of 5 cm and load value of 40 Ω at the resonant frequency of 772.3 kHz. The automated biomedical smart sensor is competent to acquire the body parameter and transmit the consequent telemetry data from the body to the data recording segment. The real-time body temperature parameter of different living beings has been experimented, and to ensure the accuracy of the developed system, the observed parameter has been matched with a calibrated system. The proposed scheme can be suitable for monitoring wirelessly other in vivo health parameters such as blood pressure, bladder pressure, and physiological signals of the patients.

“…In recent years, magnetic resonance coupling (MRC) based wireless power transfer (WPT) technology is getting considerable attention worldwide as an alternative of plug in power transfer [1][2][3][4]. Based on the well-known principle of magnetic resonance coupling, resonant inductively coupled WPT system has been proven the most efficient non-radiative type over short to medium power transfer distance [5][6][7][8]. With the ability to transfer power between separate pieces of equipment without conduit, it greatly reduces the risk of electric shock as well as electric sparking which indirectly extends the life span of electrical equipment.…”

Section: Introductionmentioning

confidence: 99%

Receiver Coil Position Selection Through Magnetic Field Coupling of a WPT System Used for Powering Multiple Electronic Devices

Sahany¹,

Biswal²,

Kar³

et al. 2019

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A wireless power transfer system based on magnetic resonant coupling (MRC) is preferred in many applications as it provides good balance between power transfer efficiency and physical separation distance. However, wireless power transfer to multiple loads through magnetic resonance coupling demands time due to the noteworthy advancement in consumer portable electronic devices. However, operating multiple loads corresponding to their optimum power level is a major concern which mostly depends on the position of the receiving coils with respect to the transmitting coil. This article presents an experimental investigation to find the best suited position of the multiple receiving coils corresponding to a spirally configured transmitting coil for powering multiple loads at their optimal power level. Through this technique multiple electronic devices can be powered up not only in one direction but also in both directions with their optimal power level. The findings will greatly assist the design of a resonant wireless power transfer system for powering multiple loads.