Complementary Class-E amplifier for wireless power transfer

Keskin, Nurcan; Liu, Huaping

doi:10.1109/ectc.2015.7159914

Cited by 5 publications

(7 citation statements)

References 17 publications

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“…e driving circuit is confronted with many di culties related to misalignment of the transmi er and receiver. A design of a more misalignment insensitive power transfer driving circuit is presented in [4]. e robustness of the driver can be further increased with the utilization of advanced magnetic topologies which give an additional resilience against misalignment.…”

Section: Imentioning

confidence: 99%

“…is parasitic capacitance is build up from: Interwinding capacitance, capacitance between coil and ground plane and capacitance on the PCB. [13] e capacitance value of C1 can be estimated based on the impedance of the resonant circuit and the re ected load impedance, as has been presented in (4). Based on this it is inferred that for an operating frequency of 6.78 MHz, the capacitance should be in the range of ×( 10 pF to 1 pF).…”

Section: I P S Dmentioning

confidence: 99%

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Practical Challenges in Design of Omnidirectional, Medium Distance, Device Agnostic Wireless Power Transfer System

Koch

Erotas

Dijkstra

et al. 2022

2022 IEEE 20th International Power Electronics and Motion Control Conference (PEMC)

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In this paper, a novel omnidirectional wireless power transfer system is proposed. By having a centralized transmitter with an e ective charging area where multiple receiver, can be placed limited by a distance of 10 cm. e transmitter utilizes a Class-E ampli er with a frequency of 6.78 MHz. In order to achieve omnidirectional ux with a limited power utilization, a switching matrix with edge-con gurable coils has been proposed to achieve both horizontal and vertical ux. is paper deals with simulation, design and preliminary experimental testing of a Class-E ampli er based system with an output power of 15 W for device agnostic consumer electronics.

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Section: Imentioning

confidence: 99%

Section: I P S Dmentioning

confidence: 99%

Practical Challenges in Design of Omnidirectional, Medium Distance, Device Agnostic Wireless Power Transfer System

Koch

Erotas

Dijkstra

et al. 2022

2022 IEEE 20th International Power Electronics and Motion Control Conference (PEMC)

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“…Recent works in the Non-Radiative WPT system are discussed in Table 3. According to [30][31][32][33], power amplifiers could be applied to optimize WPT and increase the overall system efficiency. In non-radiative systems, inductive power transmission is used to supply power to a device from source (DC supply) to load wirelessly.…”

Section: Approachmentioning

confidence: 99%

“…In non-radiative systems, inductive power transmission is used to supply power to a device from source (DC supply) to load wirelessly. Researchers used the power amplifier to connect the DC supply with the primary coil [30][31][32][33]. The primary coil is mutually coupled with the secondary coil which connects to the load.…”

Section: Approachmentioning

confidence: 99%

A Critical Analysis of a Wireless Power Transmission (WPT) with an Improvement Method for a Non-Radiative WPT

Ali

Ramli

Nugroho

2020

IJEEI

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This paper describes the analysis of the wireless power transmission including recent progress in non-radiative wireless power transmission (WPT) and the improvement methods. Generally, the WPT transmitter side consists of a DC supply voltage source, inverter/power amplifier, transmitter impedance matching device (IMD), source resonator and primary coil. The WPT receiver meanwhile consists of the secondary coil, device resonator, receiver IMD, rectifier and load. In order to achieve an efficient WPT, the WPT transmitter must transmit energy with minimum loss at the receiver side. This setup can be achieved by employing the power amplifier (PA). In this paper, the power amplifier in wireless power transmission for portable devices was designed. A Class E power amplifier was proposed and designed to improve the WPT transmitter side. The effects of zero voltage and zero derivative voltage switching on PA with optimization method was also discussed.

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“…On top of that, this type of inverter is also used because of its simple topology and the ability to achieve very high efficiency in return. This is due to the Zero-Voltage Switching (ZVS) characteristics of class E which is able to produce 100% switching condition [16].…”

Section: Introductionmentioning

confidence: 99%

Efficiency comparison of capacitive wireless power transfer for different materials

Rahman

Saat

Yusop

et al. 2020

IJPEDS

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<p>This paper describes the application of several types of materials to act as capacitive plates in a Capacitive Power Transfer (CPT) system. In general, the efficiency of CPT system is greatly influenced by the coupling capacitance which is varied by distances and permittivity values. Thus this paper intended to compare the performance of CPT system in terms of the output efficiency for several types of capacitive plates. To be specific, copper plate, zinc, and aluminium are used in this work to act as coupling plates to the CPT system. The CPT system in this work applied class E inverter as it has lowest switching losses among its competitors, i.e. class D and class F. The work is validated through experimental setup of CPT system in which copper material provides the best efficiency of the system.</p>

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Complementary Class-E amplifier for wireless power transfer

Cited by 5 publications

References 17 publications

Practical Challenges in Design of Omnidirectional, Medium Distance, Device Agnostic Wireless Power Transfer System

Practical Challenges in Design of Omnidirectional, Medium Distance, Device Agnostic Wireless Power Transfer System

A Critical Analysis of a Wireless Power Transmission (WPT) with an Improvement Method for a Non-Radiative WPT

Efficiency comparison of capacitive wireless power transfer for different materials

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