Compact energy efficient switched-capacitor multilevel DC-DC converters for interfacing DC-buses with common ground

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

doi:10.1109/isie.2011.5984438

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…The switched capacitor (SC) technique is suitable for high-voltage gain converters and can be effectively used in power converters, which was proven in [1,2]. On the basis of the SC technique, such multilevel topologies include MRSCC (multilevel mesonant switched capacitor converter) [3][4][5], modular capacitor clamped [6,7], resonant Ladder [8], MMCCC (multilevel modular capacitor clamped converter), 6X [9], converter with coupled inductors in various levels [10], and converters presented in [11][12][13][14][15][16], where the topologies include a similar concept to MRSCC.…”

Section: Introductionmentioning

confidence: 99%

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SiC-Based Bidirectional Multilevel High-Voltage Gain Switched-Capacitor Resonant Converter with Improved Efficiency

Kawa

Stala

2020

Energies

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This paper presents the research results of the bidirectional multilevel resonant switched capacitor converter (MRSCC). The converter can achieve a high voltage ratio in multilevel topology, which limits the voltage stress on switches and is able to operate with high power efficiency. The converter can be applied as an interconnector between DC voltage systems used for various applications. This paper presents a method that significantly improves the efficiency of the MSRCC through topology modification. Furthermore, the feasibility of the converter was demonstrated with the use of SiC and Si MOSFET switches, together with suitable passive components. It was demonstrated that the proposed modification of the topology makes the converter very efficient in SiC-based ones and can significantly improve the efficiency of Si MOSFET converters. The series of test results of the SiC-based converter is a novel aspect presented in this paper and shows promising achievements of efficiency. The results were obtained from the laboratory setup of 5 kW and 0.5/2 kV MRSCC. To demonstrate the bidirectional operation of the converter, a back-to-back setup (0.5/2/0.5 kV) was used. It also demonstrates that such a high-voltage gain converter can be accurately tested with the use of laboratory equipment with a typical voltage range.

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Section: Introductionmentioning

confidence: 99%

“…It is required in a vast range of applications, which incorporates battery management. The analyzed MRSCC is made up of a basic SC structure, which makes it possible to transfer energy in both directions, similar to the converters presented in [3][4][5][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%