New topology for Class E amplifiers

Eroğlu, Abdullah; Lincoln, D.; Radomski, Aaron; Chawla, Y. P.

doi:10.1080/00207210701292480

Cited by 5 publications

(1 citation statement)

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“…This paper proposed a CPT system with a single-ended switch class-E inverter. According to Sokal and Sokal (1975), Kazimierczuk and Puczko (1987), Eroglu et al (2007) and Yusmarnita et al (2015), class-E is the most suitable inverter for the WPT systems because of its high efficiency, achieving almost 100 per cent theoretically. However, the operation of a class-E inverter is highly sensitive to its circuit’s parameters variation when the capacitance of coupling plate is small.…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of class-E inverter for capacitive power transfer system

Yusop

Saat

Husin

et al. 2017

COMPEL

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Purpose This paper aims to present a new wireless power transfer technique using capacitive coupling. The capacitive power transfer (CPT) system has been introduced as an attractive alternative to the traditional inductive coupling method. The CPT offers benefits such as simple topology, fewer components, better electromagnetic interference (EMI) performance and robustness to surrounding metallic elements. Design/methodology/approach A class-E inverter together with and without inductor capacitor (LC) matching circuit has been utilised in this work because of its ability to perform the DC-to-AC inversion efficiently with significant reduction in switching losses. The validity of the proposed concept has been verified by conducting a laboratory experiment of the CPT system. Findings The performances for both systems are analysed and evaluated. A 9.7 W output power is generated through a combined interface [printed circuit board (PCB) plate] capacitance of 2.82 nF at an operating frequency of 1 MHz, with 97 per cent efficiency for 0.25 mm coupling gap distance. Originality value An efficient CPT system with class-E LC matching topology is proposed in this paper. With this topology, the zero-voltage switching can be achieved even if the load is different by properly designing the LC matching transformation circuit.

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Section: Introductionmentioning

confidence: 99%