Multilevel switched-capacitor DC-DC converter with reduced capacitor bank

Gitau, Michael Njoroge; Kala-Konga, C. L.

doi:10.1109/iecon.2010.5675221

Cited by 16 publications

(6 citation statements)

References 4 publications

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“…By simplifying (23) and assuming the voltage ripple of the clamping capacitor ΔV Cc as ΔV Cc = K v V Cc , we can obtain…”

Section: Clamping Capacitor Considerationmentioning

confidence: 99%

“…The switched inductor boost converter [20]- [22] can provide a high voltage-conversion ratio, but the voltage stress on the power switches is relatively high. The switched capacitor boost converter [23]- [25] can provide a high voltage-conversion ratio, whereas multiple diode-capacitor units are utilized with low power density. The cascade boost converter can provide a high step-up voltage, whereas the topology is complicated and the efficiency may deteriorate with a multistage structure.…”

Section: Introductionmentioning

confidence: 99%

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Study of An Improved Dual-Switch Converter With Passive Lossless Clamping

Tang

Wang

2015

IEEE Trans. Ind. Electron.

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Affected by the equivalent series resistance (ESR) of the devices in the circuit, the voltage-conversion ratio of traditional boost converter is limited. Various topologies have been developed to provide a high step-up voltage gain. An inherent high voltage gain can be achieved in a dual-switch converter with the advantages of low voltage and current stress on the switches. However, this converter has a strict requirement of the parameters' consistency. This paper discusses the steady-state operation principle of the converter in detail under the condition that the parameters are inconsistent and then illustrates the solutions to balance the voltage on the switches and suppress the resonance with passive lossless clamping. Finally, a prototype has been established in the laboratory, and simulation and experimental results have been given to verify the analysis and the effectiveness of clamping method.Index Terms-High step-up voltage gain, parameters are inconsistent, passive lossless clamping, resonance.

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“…By simplifying (23) and assuming the voltage ripple of the clamping capacitor ΔV Cc as ΔV Cc = K v V Cc , we can obtain…”

Section: Clamping Capacitor Considerationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of An Improved Dual-Switch Converter With Passive Lossless Clamping

Tang

Wang

2015

IEEE Trans. Ind. Electron.

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“…The general control strategy of the UHVDC transmission project is constant current in rectifier side and constant gamma in inverter side. Based on the real project, this control system also includes AMAX, OVL, VDCOL, RAML, Garma0, and other special segments of control and protection system [7–9]. In Changji station, the voltage balance of the group depends on identical control of trigger angle and converter transformer tap changer.…”

Section: Engineering Background and Model Establishmentmentioning

confidence: 99%

Study on working condition of 750 kV AC filter breaker in ± 1100 kV UHVDC system

Zhao

Guo

Fang

et al. 2018

J. eng.

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“…In such cases, the whole circuit may turn out to be more complex and less efficient. High-voltage gain can also be realised by using a switched capacitor converter [10][11][12], but there are some problems as more switches are needed, the input current is pulsating, the driving circuit is complex and the voltage gain is hard to control. The problems above have been well reduced using the combination of a switched capacitor converter and the traditional switching-mode dc/dc converter in [13].…”

Section: Introductionmentioning

confidence: 99%

Kind of high step‐up dc/dc converter using a novel voltage multiplier cell

Zhu

Ren

2017

IET Power Electronics

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This study proposes a kind of high step-up dc/dc converter with a novel voltage multiplier cell (VMC). The proposed VMC sharply reduces voltage stress on switches and diodes. Therefore, the conversion efficiency can be improved significantly. The converter also provides a wide range of voltage conversion ratios including fractional as well as VMC numbers and switch duty cycle. The topologies, operation principles, working characteristics and voltage conversion ratio are analysed in detail. A 500 W experimental prototype with two VMCs has been developed to validate the effectiveness of the theoretical analysis, and the highest efficiency is 93.8%.

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Multilevel switched-capacitor DC-DC converter with reduced capacitor bank

Cited by 16 publications

References 4 publications

Study of An Improved Dual-Switch Converter With Passive Lossless Clamping

Study of An Improved Dual-Switch Converter With Passive Lossless Clamping

Study on working condition of 750 kV AC filter breaker in ± 1100 kV UHVDC system

Kind of high step‐up dc/dc converter using a novel voltage multiplier cell

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