Design of Class E resonant rectifiers and diode evaluation for VHF power conversion

Santiago-González, Juan A.; Elbaggari, Khalil M.; Afridi, Khurram K.; Perreault, David J.

doi:10.1109/ecce.2014.6953763

Cited by 17 publications

(20 citation statements)

References 29 publications

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“…Recently, several papers reported that the design of the class-E rectifier with low output-filter inductance. Even though the harmonic components are included in the output-filter inductance current, the performance improvement, such as pure resistive input impedance, can be obtained by considering low output-filter inductance [10,24,25]. Additionally, by enabling to use the output-filter inductance as a design parameter, a designer has one more degree of freedom for the class-E rectifier designs.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of generalized class-E rectifier

Asiya

Osato

Wei

et al. 2020

NOLTA

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This paper presents a semi-analytical expression of the generalized class-E rectifier. Effect of low output-filter inductance is included in the theoretical formula presented in this paper. The harmonic components are considered in the current flowing through the outputfilter inductance. For obtaining the theoretical waveforms, the coefficients of each frequency component are obtained by numerical calculations. By using the semi-analytical expression, characteristics of the class-E rectifier can be comprehended in a theoretical manner. By varying the output-filter inductance, it is possible to improve the rectifier characteristics, such as larger power output capability and zero input reactance, compared with the traditional class-E rectifiers. This paper also presents two examples of designs and implementations of resonant converters with the class-E rectifier. The validity of the semi-analytical expression and design strategies were confirmed from the quantitative agreements with experimental and PSpice simulation results.

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Section: Introductionmentioning

confidence: 99%

Analysis and design of generalized class-E rectifier

Asiya

Osato

Wei

et al. 2020

NOLTA

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“…The Class-E resonant rectifier [25] with a quasi-resistiveinput is used as a starting point. Although this solution is able to reduce the reactive part of Z RX , by a proper choice of C D and by allowing for a ripple of the output current by reducing L C , it results in a output voltage strongly dependent on the dc load, which is not an acceptable solution for the system under consideration.…”

Section: Rectifier and Complete Dc-to-dc Linkmentioning

confidence: 99%

Load- and Position-Independent Moving MHz WPT System Based on GaN-Distributed Current Sources

Pacini

Costanzo

Aldhaher

et al. 2017

IEEE Trans. Microwave Theory Techn.

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This paper describes the modeling, analysis, and design of a complete (dc-to-dc) inductive wireless power transfer (WPT) system for industrial moving applications. The system operates at 6.78 MHz and delivers up to 150 W to a load moving along a linear path, providing a quasi-constant dc output voltage and maintaining a zero voltage switching operation, regardless of position and load, without any retuning or feedback. The inductive link consists of an array of stationary transmitting coils and a moving receiving coil whose length is optimized to achieve a constant coupling coefficient along the path. Each Tx coil is individually driven by a constant amplitude and phase sinusoidal current that is generated from a GaN-based coupled load-independent Class EF inverter. Two adjacent transmitters are activated at a given time depending on the receiver’s position; this effectively creates a virtual series connection between the two transmitting coils. The Rx coil is connected to a passive Class E rectifier that is designed to maintain a constant dc output voltage independent of its load and position. Extensive experimental results are presented to show the performance over different loading conditions and positions. A peak dc-to-dc efficiency of 80% is achieved at 100 W of dc output power and a dc output voltage variation of less than 5% is measured over a load range from 30 to 500 Ω . The work in this paper is foreseen as a design solution for a high-efficient, maintenance-free, and reliable WPT system for powering sliders and mass movers in industrial automation plants

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“…class F -1 or just generally harmonically-terminated PAs operated as rectifiers [22]. A promising design methodology for Class-E rectifiers with near resistive input impedance has been recently presented in [23]. Experimentally evaluated with Si Schottky diodes for VHF rectification, it may be perfectly valid for transistor-based topologies at UHF and the lower microwave bands.…”

Section: A Class-e Rectifiersmentioning

confidence: 99%

Class-E rectifiers and power converters

Garcia

Popović

2017

2017 IEEE MTT-S International Microwave Symposium (IMS)

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Abstract-This paper reviews the use of the class-E topology for RF-to-DC and DC-to-DC power conversion. After covering its early history, the class-E rectifier is introduced in the context of the time-reversal duality principle, to be then integrated with an inverter in a class-E 2 DC/DC converter. Recent examples and applications at UHF and microwave bands are finally presented. A review of RF rectifiers based on Schottky diodes or FET transistors, is followed by a discussion of synchronous and self-synchronous implementations of the double class-E DC/DC converter, using advanced GaN HEMT transistors.

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Design of Class E resonant rectifiers and diode evaluation for VHF power conversion

Cited by 17 publications

References 29 publications

Analysis and design of generalized class-E rectifier

Analysis and design of generalized class-E rectifier

Load- and Position-Independent Moving MHz WPT System Based on GaN-Distributed Current Sources

Class-E rectifiers and power converters

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