A Family of High-Frequency Single-Switch DC–DC Converters With Low Switch Voltage Stress Based on Impedance Networks

Lee, Kyunghwan; Chung, Euihoon; Han, Yongsu; Ha, Jung‐Ik

doi:10.1109/tpel.2016.2580154

Cited by 43 publications

(11 citation statements)

References 32 publications

(36 reference statements)

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“…The input resistance and reactance of the rectifier are also important and useful for designs of resonant DC-DC converters and WPT systems, in particular. This is because the input reactance of the rectifier affects the resonant inverter operations significantly in these systems [18][19][20].…”

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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“…By combining (7) and 9, we can obtain the coordinates of a pole (or zero) of the transfer function in the δ-domain:…”

Section: Stability Of the System Using Delta Operator At High Switchimentioning

confidence: 99%

“…The increase in the switching frequency of a DC-DC switching converter not only improves its transient response features with load variation, but also significantly reduces the sizes and weights of the passive filtering components, including inductors and capacitors. These power supply module improvements are particularly beneficial for portable and mobile consumer electronics [7][8][9][10][11]. Consequently, high-frequency digitally controlled (HFD) DC-DC switching converters attract considerable attention from both the academia and industry [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…The switching frequencies of analogue-control DC-DC switching converters have exceeded several tens of megahertz [7][8][9][10]. However, the switching frequencies of digitally controlled DC-DC switching converters have only increased from hundreds of kilohertz [1,11,12] to several megahertz [13][14][15], because of two special issues that exist at high frequencies: maintaining the stability and the accuracy of the feedback control system and reducing the hardware cost.…”

Section: Introductionmentioning

confidence: 99%

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Digital controller based on delta operator for high‐frequency DC–DC switching converters

Chen

Wei

Shang

et al. 2018

IET Power Electronics

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Both the stability and the control accuracy of digital controllers for DC-DC switching converters utilising shift operators severely degrade under high switching frequencies. This study presents a digital-proportion integration differentiation (D-PID) controller based on a delta operator for DC-DC converters with high switching frequencies. Both the stability and the control accuracy of the digitally controlled converters were effectively improved when using the delta operator instead of the shift operator. The hardware cost and the processing speed requirements were also considerably reduced. The performance advantages of such a D-PID controller were theoretically analysed, and then simulated using the Simulink platform. Finally, both the proposed D-PID controller and a conventional shift operator-based controller were implemented for DC-DC switching converters on a field-programmable gate array (FPGA) platform. The benefits of using the delta operator over the shift operator were experimentally verified, and the test results indicated that for the DC-DC switching converter with 2 MHz switching frequency, better control accuracy can be obtained by using the delta operator than using the shift operator.

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“…With the continuous improvement of the working frequency, the VHF converters can effectively reduce the value and volume of passive components and increase the power density [77]- [82]. In the future, the integrated VHF converters will become the development trend of the VHF converters.…”

Section: Opportunities and Challenges Of Vhf Power Convertersmentioning

confidence: 99%

Topologies and Control Strategies of Very High Frequency Converters: A Survey

Guan

Wang

et al. 2017

CPSS TPEA

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Abstract-with the fast development of power electronics, very high frequency (VHF) power converters (30-300 MHz) gradually become research focus, which can greatly reduce the value, volume of passive components and help to improve the system power density. However, at such high operating frequency, many challenges have been proposed, such as switching characteristics, topologies characteristics and control methods. This paper starts from the development background of VHF power converters, and an overview of VHF development is described. Different topologies adopted in VHF condition are introduced and compared. At the same time, the resonant driving strategies and control methods for very high frequency converters are discussed and analyzed, which can provide guidance for further research of VHF converters.

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A Family of High-Frequency Single-Switch DC–DC Converters With Low Switch Voltage Stress Based on Impedance Networks

Cited by 43 publications

References 32 publications

Analysis and design of generalized class-E rectifier

Analysis and design of generalized class-E rectifier

Digital controller based on delta operator for high‐frequency DC–DC switching converters

Topologies and Control Strategies of Very High Frequency Converters: A Survey

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