A 30-MHz isolated push-pull VHF resonant converter

Cai, Wei; Zhang, Zhiliang; Ren, Xiaoyong; Liu, Yanfei

doi:10.1109/apec.2014.6803498

Cited by 31 publications

(12 citation statements)

References 10 publications

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“…In some case, the matching network interconnecting the two is used to provide some combination of filtering, isolation and voltage transformation (via a transformer [5]). However, the matching network may increase the complexity of the circuit topology and design method and even reduce power conversion efficiency.…”

Section: Conventional Design Methods For Resonant Sepic Convertermentioning

confidence: 99%

Analysis and design of a 30 MHz resonant SEPIC converter

Lin

Yuan

Zhang

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper presents the analysis and design of a resonant SEPIC converter operating at 30 MHz. With the conventional design method, tuning the amplitude and phase of the fundamental input voltage and current affect each other so that the design procedure is trial-and-error. An improved design method is proposed by re-dividing the resonant SEPIC topology and defining the new variables to realize the independent tuning of the amplitude and phase. The loss analysis is provided. A 15 V input, 14 W/ 28 V output, 30 MHz prototype has been built to verify the proposed design method. The prototype achieves the efficiency above 80% over a wide load. Furthermore, a novel structure of the PCB embedded inductors is used in a 25 W prototype to further improve the power density. Keywords-VHF SEPIC; design method; PCB inductor978-1-4799-6735-3/15/$31.00 ©2015 IEEE

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Section: Conventional Design Methods For Resonant Sepic Convertermentioning

confidence: 99%

Analysis and design of a 30 MHz resonant SEPIC converter

Lin

Yuan

Zhang

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

Self Cite

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“…10 is the L MR -C MR series branch which is tuned to be resonant near the second harmonic of the switching frequency, thus suppressing second harmonic content in the drain voltage and providing a quasi-trapezoidal drain voltage waveform. F 2 inverters are useful in very highfrequency dc-dc converters, for example [39,[46][47][48][49]. Fig.…”

Section: Circuit Transformation Of a  2 Invertermentioning

confidence: 99%

Design of Single-Switch Inverters for Variable Resistance/Load Modulation Operation

Rosłaniec

Jurkov

Bastami

2015

IEEE Trans. Power Electron.

129

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Abstract-Single-switch inverters such as the conventional class E inverter are often highly load sensitive, and maintain zero-voltage switching over only a narrow range of load resistances. This paper introduces a design methodology that enables rapid synthesis of class E and related single-switch inverters that maintain ZVS operation over a wide range of resistive loads. We treat the design of Class-E inverters for variable resistance operation and show how the proposed methodology relates to circuit transformations on traditional class E designs. We also illustrate the use of this transformation approach to realize  2 inverters for variable-resistance operation.The proposed methodology is demonstrated and experimentally validated at 27.12 MHz in a class E and  2 inverter designs that operate efficiently over 12:1 load resistance range for an 8:1 and 10:1 variation in output power respectively and a 25 W peak output power.

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“…MOSFET can meet the zero-voltage switching (ZVS) and zero-derivative switching (ZDS) conditions when the class-E power amplifier works under the ideal condition and the efficiency is 100% [4]. According to the parametric characters of the class-E power amplifier, the authors studied the changes in output characteristics of class-E power amplifiers when the load deviated from the optimal value in [5].…”

Section: Introductionmentioning

confidence: 99%

Parameter Analysis and Optimization of Class-E Power Amplifier Used in Wireless Power Transfer System

2019

Energies

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In this paper, a steady-state matrix analysis method is introduced to analyze the output characteristics of the class-E power amplifier used in a wireless power transfer (WPT) system, which takes the inductance resistance, on-resistance and leakage current of metal-oxide-semiconductor field effect transistor (MOSFET) into account so that the results can be closer to the actual value. On this basis, the parameters of the class-E power amplifier are optimized, and the output power is improved under the premise of keeping the efficiency unchanged. Finally, the output characteristics of the amplifier before and after optimization are compared by an experiment, while the B-field strength around the WPT system is studied through simulation. The experimental results verify the correctness and feasibility of the optimization method based on steady-state matrix analysis.

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A 30-MHz isolated push-pull VHF resonant converter

Cited by 31 publications

References 10 publications

Analysis and design of a 30 MHz resonant SEPIC converter

Analysis and design of a 30 MHz resonant SEPIC converter

Design of Single-Switch Inverters for Variable Resistance/Load Modulation Operation

Parameter Analysis and Optimization of Class-E Power Amplifier Used in Wireless Power Transfer System

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