A 36 W Wireless Power Transfer System with 82% Efficiency for LED Lighting Applications

Chen, Wei‐Ting; Chinga, R. A.; Yoshida, Shuhei; Lin, Jenshan; Hsu, C.L.

doi:10.5104/jiepeng.6.32

Cited by 11 publications

(7 citation statements)

References 6 publications

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“…Finally, the load section contains in series the resonating capacitor, C S , and the load (L L , R L ), where L L is the TX coil of the NRIC link. Besides the nominal-based class-E PA [90][91][92], a higher efficiency sub-nominal class-E PA is presented in its general context [93] and for MIDs [94]. The amplifier, operated at 1 MHz frequency, is composed of the MOSFET IRF640N switch with an IXDN414 driver.…”

Section: System Designmentioning

confidence: 99%

Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

Khan

Pavuluri

Cummins

et al. 2020

Sensors

222

109

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Wireless power transfer (WPT) systems have become increasingly suitable solutions for the electrical powering of advanced multifunctional micro-electronic devices such as those found in current biomedical implants. The design and implementation of high power transfer efficiency WPT systems are, however, challenging. The size of the WPT system, the separation distance between the outside environment and location of the implanted medical device inside the body, the operating frequency and tissue safety due to power dissipation are key parameters to consider in the design of WPT systems. This article provides a systematic review of the wide range of WPT systems that have been investigated over the last two decades to improve overall system performance. The various strategies implemented to transfer wireless power in implantable medical devices (IMDs) were reviewed, which includes capacitive coupling, inductive coupling, magnetic resonance coupling and, more recently, acoustic and optical powering methods. The strengths and limitations of all these techniques are benchmarked against each other and particular emphasis is placed on comparing the implanted receiver size, the WPT distance, power transfer efficiency and tissue safety presented by the resulting systems. Necessary improvements and trends of each WPT techniques are also indicated per specific IMD.

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Section: System Designmentioning

confidence: 99%

Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

Khan

Pavuluri

Cummins

et al. 2020

Sensors

222

109

View full text Add to dashboard Cite

show abstract

“…8, based on the transistor MOSFET IRLML0040TRPbF (FR-4 substrate, h = 1.6 mm, ε r = 4.5). This proof-of-concept oscillator with no specific application operates at 12 MHz and is coupled to a series resonator, in a manner similar to [34]- [36]. The oscillator has been obtained by introducing series feedback in a Class-E amplifier through the procedure described in detail in [15].…”

Section: Analysis Of Transistor-based Oscillatormentioning

confidence: 99%

Nonlinear Dynamics of an Oscillator Inductively Coupled to an External Resonator for Power Transfer and Data Transmission

Ardila

Ramírez

Suárez

2022

IEEE Trans. Microwave Theory Techn.

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This work presents an investigation of the nonlinear dynamics of an oscillator that is inductively coupled to an external resonator for power transfer applications. Analytical expressions are derived for the oscillation frequency and output power, which provide insight into the effect of the coupled resonator on the oscillator solution. From the analytical study, criteria are derived to maximize the k range with a high efficiency and a limited variation of the oscillation frequency. The resistor of the external resonator can be modulated for data transmission to the core oscillator. Here the sensitivity to this resistor and its dependence on the coupling factor are analyzed in detail. The methods have been applied to a Class-E oscillator that has been analyzed through a contour-intersection technique. This is based on the extraction from harmonic balance (HB) of a bi-variate nonlinear admittance function accounting for the oscillator circuit, which is combined with the passive linear admittance function of the coupled resonator. The advantage is taken of the ease of this analysis to obtain constant-efficiency contours in the oscillatory regime, traced in the plane defined by the coupling factor and any suitable analysis parameter. By means of a bifurcation analysis, various phenomena, including the oscillation extinction plus onset versus the coupling factor and the appearance of quasi-periodic solutions, are detected and avoided. Very good correspondence has been obtained between simulation and measured results.

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“…Today, there is some vital and daily application that require Wireless Power Transfer (WPT). Wireless energy can be transmitted in various ways a technique such as resonant inductive coupling and capacitive coupling based on electromagnetic radiation, microwaves [1], [2]. One of the major challenges and difficulties facing researchers in this field is how to improve capturing the largest possible amount of energy using the techniques mentioned earlier.…”

Section: Introductionmentioning

confidence: 99%

Development of a wireless power transfer system for electric vehicle charging using an E-Class power amplifier

Hussain¹,

Gharghan²,

Al-nabe³

2022

Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9

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Wireless transmission technology is considered one of the advanced and advanced technologies at present, through which complexity in electrical wiring is avoided, as well as its valuable use in difficult-to-reach places such as high places, roads, etc., in this research a wireless power transmission system was designed using electromagnetic induction technology to charge the battery of electric cars wirelessly and with a high transmission efficiency of up to 90% where an E-type power amplifier was used that includes an IRFP250 switch and a throttle coil of 325μH. The intrinsic is 67μH. and its internal resistance is 32mΩ. This system was implemented using the MATLAB program. As for the receiving side, a receiving coil was designed to be equal and equivalent to the transmitter coil with the size and inductive value, and the distance between the two coils was 20cm. After implementing the program, an excellent quality factor was obtained, high efficiency, and very little power loss.

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A 36 W Wireless Power Transfer System with 82% Efficiency for LED Lighting Applications

Cited by 11 publications

References 6 publications

Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

Nonlinear Dynamics of an Oscillator Inductively Coupled to an External Resonator for Power Transfer and Data Transmission

Development of a wireless power transfer system for electric vehicle charging using an E-Class power amplifier

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