The Resonant Modular Multilevel DC–DC Converter Adopting Switched-Inductor Cells for High Step-Up Ratio

Zhu, Xiaoquan; Jiang, Liming; Zhang, Bo; Jin, Ke

doi:10.1109/jestpe.2022.3157618

Cited by 13 publications

(10 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For fair comparison, the proposed converter is compared with other step-up MMDCs under the same/similar total number of components used. Therefore, the quantity of upper and lower arm SMs are set as five and two in Zhang and Green, 19 while the quantity is three and one in other studies 20,22 and the proposed converter. Two SL-cells are adopted in Zhu et al, 20 and one SL-cell and SC-cell are adopted in the proposed topology.…”

Section: Comparison Of Output Voltage Gainmentioning

confidence: 99%

“…Therefore, the quantity of upper and lower arm SMs are set as five and two in Zhang and Green, 19 while the quantity is three and one in other studies 20,22 and the proposed converter. Two SL-cells are adopted in Zhu et al, 20 and one SL-cell and SC-cell are adopted in the proposed topology. The relationships between duty cycle and the voltage gain of these step-up MMDCs have been plotted and compared in Figure 6.…”

Section: Comparison Of Output Voltage Gainmentioning

confidence: 99%

“…Zhang and Green 19 propose a high step‐up MMDC based on boost topology; there is no common‐mode current at the upper and lower arm, but the step‐up ratio is greatly restrained by the quantity of SMs and duty cycle. Hence, Zhu et al 20 adopt SL‐cells to improve the voltage gain greatly, but the duty cycle needs to be set to a high value to achieve high voltage gain. A low voltage gain chain‐link MMDC is proposed in a previous study, 21 which is more suitable to connect two similar voltage level grids.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multicell nonisolated resonant modular multilevel dc‐dc converter with self‐voltage balancing and step‐up conversion

Zhu

Jiang

Jin

et al. 2023

Circuit Theory & Apps

Self Cite

View full text Add to dashboard Cite

SummaryWith the rapid development of renewable energy power generation technologies in high‐voltage direct‐current (HVDC) system, the high step‐up ratio dc‐dc conversion plays an important role to connect dc grids with different voltage levels. This paper presents a multicell nonisolated resonant modular multilevel dc–dc converter (MMDC) for medium‐ and high‐voltage applications. The converter exhibits expandability without using transformer. Moreover, by adding additional switched‐inductor (SL) cells, switched‐capacitor (SC) cells, and the upper arm submodules (SMs), the proposed converter can obtain high gain with low voltage stresses on switches and diodes. The operating states of SMs is regulated by the carrier phase‐shifted pulse width modulation (CPS‐PWM) to guarantee the number of inserted SMs is constant to support the high‐side load at any moment. The converter is operated in resonant mode with resonance between SM capacitors and arm inductor. The step‐up ratio could be regulated by adjusting the number of SL cells, SC cells, and upper arm SMs; thus, more flexible voltage regulation can be realized. In addition, the proposed converter has the voltage self‐balancing capability of capacitors in SMs and SC‐cells without additional balancing control strategy. The topology configuration, parameter design guideline, operating principle, and comparison with other MMDCs are presented. Finally, the theoretical analysis is verified by the simulation and bench‐scaled experimental prototype results.

show abstract

Section: Comparison Of Output Voltage Gainmentioning

confidence: 99%

Section: Comparison Of Output Voltage Gainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multicell nonisolated resonant modular multilevel dc‐dc converter with self‐voltage balancing and step‐up conversion

Zhu

Jiang

Jin

et al. 2023

Circuit Theory & Apps

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the last decade, various methods have been proposed in the literatures to develop high voltage gain DC/DC converters. To increase the output voltage, techniques such as switching inductor/capacitor has been introduced as an effective method [7][8][9][10]. However, the converters such as those in refs.…”

Section: Introductionmentioning

confidence: 99%

“…The converters with the switched inductor cell usually have large volume because of plenty of cores and windings such as those presented in refs. [9] and [10]. Another method for achieving high voltage gain is the use of the coupled inductor with the transformer turn ratio of larger than one.…”

Section: Introductionmentioning

confidence: 99%

Ultra high step‐up soft‐switching DC/DC converter using coupled inductor and interleaved technique

Maalandish

Babaei

Abolhasani

et al. 2023

IET Power Electronics

View full text Add to dashboard Cite

In this paper, a new ultra high step‐up soft‐switching DC/DC converter using coupled inductor and interleaved technique is presented. The primary side of the coupled inductors in up section and down section will be charged by the input power supply. The stored energy of the coupled inductors (at primary and secondary sides) is discharged to the output capacitors in up and down sections. Also, the capacitors on the coupled inductors path have clamped capacitors that cause the voltage stress across the power semiconductors to be low. Al diodes in up and down sections except output diodes are working at zero current switching turn‐off. Therefore, the reverse recovery problems of the proposed converter will be majorly solved. Therefore, power losses of the proposed converter will be decreased by using switches with lower on‐state resistance RDS(on) and lower rating power diodes. In addition, the leakage inductor causes to exclusive the current falling balance of the output diodes, significantly. In order to clarify the main advantages of the proposed converter, comparison between the proposed converter and other structures is provided. Finally, the proposed converter with turn ratio N(N2/N1) = 2 in about 300 W with operating 50 kHz is tested with real‐time TYPHOON HIL‐404 emulator in the laboratory.

show abstract

Multistage Boost Converter with Modified Voltage Multiplier for Contemporary Applications

Saravanan,

Jaya

2024

J. Electr. Eng. Technol.

View full text Add to dashboard Cite

The Resonant Modular Multilevel DC–DC Converter Adopting Switched-Inductor Cells for High Step-Up Ratio

Cited by 13 publications

References 35 publications

Multicell nonisolated resonant modular multilevel dc‐dc converter with self‐voltage balancing and step‐up conversion

Multicell nonisolated resonant modular multilevel dc‐dc converter with self‐voltage balancing and step‐up conversion

Ultra high step‐up soft‐switching DC/DC converter using coupled inductor and interleaved technique

Multistage Boost Converter with Modified Voltage Multiplier for Contemporary Applications

Contact Info

Product

Resources

About