A Family of Two-Switch Boosting Switched-Capacitor Converters

Wu, Bin; Li, Shouxiang; Smedley, K.M.; Singer, S.

doi:10.1109/tpel.2014.2375311

Cited by 106 publications

(34 citation statements)

References 22 publications

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“…23 and Fig. 24) and the capacitor charges finally to voltage U C m = (2n ¡ 1)U in (20), which is lower than that in the previous case with U 01 = 0. This operating point determines the converter's minimum power and critical load at a fixed frequency f S .…”

Section: The Concept Of the Thyristor-based Voltage Multiplier In Fulmentioning

confidence: 70%

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A family of high-power multilevel switched capacitor-based resonant DC-DC converters – operational parameters and novel concepts of topologies

Stala

Пирог

Penczek

et al. 2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. This paper presents the concept of topologies and investigation results of switched-capacitor voltage multipliers designed for application in high power systems. The analyzed family of multilevel converters includes established topologies as well as novel concepts. The application of thyristors as well as the invention of novel concepts of multiplier topologies and appropriate control make it possible to achieve high efficiency, high voltage gain, reliable and simple DC-DC converters for high power systems. Based on analytical models of the SCVMs, the paper presents a discussion of the selection of components and the efficiency of the converters as a function of converted power as well as the voltage range on the input and the output side. The results are supported by computer simulations and demonstrative experimental tests. The SC converters operate using the principle of charge pumps and usually contain a large number of switches. However, high efficiency can be achieved in the SC converters by the application of resonant operation [4,15]. The SC converters can also be designed in an efficient way thanks to an appropriate selection of passive and active components [4,16]. The selection of the parameters of the passive components for an SCVM is a complex process and and it should be done considering the switch technology, power and required efficiency, which is demonstrated in [16].The SCVM topology is suitable for the application of thyristors as active switches [3,4,15]. Furthermore, the ability of bidirectional voltage blocking makes it possible to further optimize the SCVMs, as presented in [4,26,27], where the reduction of the number of switches is demonstrated in the topology called RSCVM. The application of thyristors creates possibilities for DC-DC conversion in resonant mode topology at high power, voltages and currents, owing to extremely high parameters of the thyristors. The resonant-mode operation is advantageous, because it makes turning-off the switches possible and assures zero current switching (ZCS) [4]. This paper, in Section 2, presents an analysis of the thyristor-based SCVM related to feasibility of the converter for high power application (Fig. 1a). The analytical results reach 500 kilowatts power, which makes it possible to demonstrate, in figures, the efficiency, range of currents as well as the value of LC parameters. Next, in Section 3, the thyristor-based topologies suitable for high power operation are presented (Figs. 1b, 1c, 1d). The evolution of the SCVM, presented in [4] is also

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Section: The Concept Of the Thyristor-based Voltage Multiplier In Fulmentioning

confidence: 70%

“…Maximum voltage across capacitor C equals U Cm = 2nU in ¡ U 01 (20) with its highest value at U 01 = 0 expressed by…”

Section: The Concept Of the Thyristor-based Voltage Multiplier In Fulmentioning

confidence: 99%

A family of high-power multilevel switched capacitor-based resonant DC-DC converters – operational parameters and novel concepts of topologies

Stala

Пирог

Penczek

et al. 2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Por conseguinte, as células de capacitor chaveado apresentam boa estabilidade e não requerem malhas adicionais de controle [1]. Em certas estruturas, existe também a possibilidade de dividir os valores de tensão entre os capacitores e semicondutores [2], [3].…”

Section: Introductionunclassified

Retificador Boost Bridgeless Unidirecional Monofásico Com Célula De Capacitor Chaveado

Lazzarin¹,

Dias²

2017

Eletrônica de Potência

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Este trabalho apresenta a topologia de retificador boost bridgeless híbrido unidirecional monofásico com célula de capacitor chaveado tipo ladder na saída. A estrutura multiplica a tensão de saída e divide os valores de tensão sobre os semicondutores por meio de células de capacitor chaveado. As características da topologia boost convencional integrada à célula de capacitor chaveado proporcionam boa regulação de tensão de saída e de corrente de entrada, desta forma proporciona alto ganho associado com alto fator de potência. Também é apresentada uma estratégia para a modelagem dinâmica de conversores híbridos com capacitor chaveado baseada em um circuito equivalente de ordem reduzida. Um protótipo de 1 kW com tensões de 800 V de saída e 220 V de entrada foi desenvolvido para a validação experimental da estrutura. O conversor apresentou um valor máximo de tensão de 400 V nos semicondutores, pico de rendimento de 97,1 % e fator de potência unitário.

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“…Devices are arranged on a patient's body and can be used to monitor the physiological condition of patients closely. These medical sensors monitor the patient's vital body parameters, such as temperature, heart rate, blood pressure, oxygen saturation, and transmit the data to a doctor in real time [1,[3][4][5][6]. When a doctor reviews the transmitted sensor readings, they can get a better understanding of a patient's health conditions.…”

mentioning

confidence: 99%

Low Power Si-Based Power Amplifier for Healthcare Application

Cai

Gu³

2016

Int J Pharm Pharm Sci

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Objective: The objective of this research was to design a 2.4 GHz class B Power Amplifier (PA), with 0.18um Semiconductor Manufacturing International Corporation (SMIC) CMOS technology by using Cadence software, for health care applications. The ultimate goal for such application is to minimize the trade-offs between performance and cost, and between performance and low power consumption design.Methods: This paper introduces the design of a 2.4GHz class B power amplifier designed as dual gate topology. This class B power amplifier could transmit 26dBm output power to a 50 Ω load . The power added efficiency was 60 % minimum and the power gain was 90dB, the total power consumption was 6.9 mW.Results: Besides, accurate device modeling, is needed, due to the leakage and process variations. Conclusion:The performance of the power amplifier meets the specification requirements of the desired.

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A Family of Two-Switch Boosting Switched-Capacitor Converters

Cited by 106 publications

References 22 publications

A family of high-power multilevel switched capacitor-based resonant DC-DC converters – operational parameters and novel concepts of topologies

A family of high-power multilevel switched capacitor-based resonant DC-DC converters – operational parameters and novel concepts of topologies

Retificador Boost Bridgeless Unidirecional Monofásico Com Célula De Capacitor Chaveado

Low Power Si-Based Power Amplifier for Healthcare Application

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