Modified SEPIC DC-DC Converter with Wide Step-up/Step-down Range for Fuel Cell Vehicles

Wang, Jiulong; Wu, Xiaogang; Liu, Zhengxin; Cui, Xiaofan; Song, Ziyou

doi:10.1109/tpel.2022.3203151

Cited by 12 publications

(9 citation statements)

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“…In step-up mode, the proposed converter has higher voltage gain than converter in Banaei and Ajdar Faeghi Bonab 14 , Sarikhani, et al 24 , and Wang, et al 27 . In step-down mode, converters in Banaei and Ajdar Faeghi Bonab 14 , Dhimish and Schofield 15 , Kumar and Krishnasamy 17 , and Hosseinpour, et al 30 of voltage gain are less than proposed converter.…”

Section: Comparisonmentioning

confidence: 95%

“…Although the voltage gain in Alizadeh, et al 21 is equal to the proposed converter, the current stress of power switch in this converter is considerably larger than the proposed converter. In the operating condition of experiment, the voltage stress of power switch has the superior performance comparing with the relevant converters except for the power switchS 2 of the converter in Wang, et al 27 . Additionally, the current stresses of power switches S 1 and S 2 in Wang, et al 27 are higher than the current stresses ofS 1 and S 2 in the proposed converter, respectively.…”

Section: Comparisonmentioning

confidence: 99%

“…In the operating condition of experiment, the voltage stress of power switch has the superior performance comparing with the relevant converters except for the power switchS 2 of the converter in Wang, et al 27 . Additionally, the current stresses of power switches S 1 and S 2 in Wang, et al 27 are higher than the current stresses ofS 1 and S 2 in the proposed converter, respectively. Moreover, the proposed converter has lower number of inductors and higher frequency than relevant converters to decrease the volume of the converter.…”

Section: Comparisonmentioning

confidence: 99%

“…Compared with the above relevant dual switches converter, converter in Okati, et al 26 has higher conversion ratio. To solve the effect of non-common and hold on the voltage gain with previous converter, a modified SEPIC converter is proposed in Wang, et al 27 . A novel negative output buck-boost converter in Ding and Wang 28 and a converter with interleaving two CUK converters in Taghizadegan Kalantari, et al 29 are proposed, which achieve wider conversion ratio than above dual switches converter and have non-common ground structure.…”

Section: Introductionmentioning

confidence: 99%

“…on(22), the average current acrossD 1 in conducting time is presented as () From(24), during a switching cycle, we can derive the average current of D 1 as () From Fig.1and (23), according to KCL and the principle of ampere-second balance, the following average currents ofD 3 and D 2 can be given, respectively. (15) and(27), the average currents flowing through the power switches S 1 and S 2 can be written as follows: ) and (28), the average current flowing through the magnetizing inductor L m is given similarly()Calculating the current ripples of inductors L 1 and L m can be achieved as (31) and (32), respectively. 23), (30)-(32), the maximum and minimum currents ofL 1 and L m are achieved.…”

mentioning

confidence: 99%

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Implementation of a novel buck-boost converter based on coupled inductor for renewable energy applications

Luo

Chen

Hong

et al. 2023

Preprint

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A coupled inductor based on dual switches buck-boost converter is proposed in the article, which can be used in renewable energy applications. Wide conversion ratio can be realized by regulating turns ratio of the coupled inductor and the duty cycle. The topology has a quadratic- like voltage gain, and the low voltage stress and current stress. Combing the passive clamping circuit to recover leakage energy, the voltage spikes of power switches are suppressed, improving the efficiency. Moreover, it has the merits of continuous input current and common ground. To demonstrate the superior performances of the presented converter, the principle of operation and steady-state analysis are presented in detail. At last, a 100 W experimental prototype was designed to verify the correctness of the theoretical analysis, with a maximum efficiency of 95.7% in step-up mode and 96.8 % in step-down mode.

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Section: Comparisonmentioning

confidence: 95%

Section: Comparisonmentioning

confidence: 99%

Section: Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Implementation of a novel buck-boost converter based on coupled inductor for renewable energy applications

Luo

Chen

Hong

et al. 2023

Preprint

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A non‐isolated high quadratic step‐up converter for fuel cell electric vehicle applications

Naresh

Peddapati

Alghaythi

2023

Circuit Theory & Apps

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SummaryThe fuel cell electric vehicles require a dc‐dc converter as a power interface to match the fuel cell voltage to the dc bus. By considering the soft characteristics of the fuel cell source, this work introduces a non‐isolated high quadratic step‐up (HQSU) converter with a wide‐range voltage gain and continuous source current. The proposed converter comprises two synchronously operated active switches and two inductors; it adopts a switched capacitor cell to improve the voltage gain and reduce the voltage stress of the output side components. Further, this work discusses the HQSU converter in terms of operation, steady‐state analysis, design considerations, and non‐ideal and dynamic analysis. In addition, the comprehensive comparison with recent quadratic converters suggests that the proposed HQSU converter has the advantages of higher voltage gain, high effectiveness index, low total voltage stress, and lower SDP rating, along with common ground and non‐inverted output. Furthermore, a 200 W laboratory prototype is fabricated to validate the theoretical findings. The experimental results confirm the good steady‐state and dynamic behavior of the proposed HQSU converter, which achieved an efficiency of 94.2% at rated power.

show abstract

Implementation of a novel buck‐boost converter based on coupled inductor for renewable energy applications

Luo

Chen

Hong

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

SummaryA coupled inductor based on dual switches buck‐boost converter is proposed in the article, which can be used in renewable energy applications. A wide conversion ratio can be realized by regulating turns ratio of the coupled inductor and the duty cycle. The topology has a quadratic‐like voltage gain, and the low voltage stress and current stress. Combing the passive clamping circuit to recover leakage energy, the voltage spikes of power switches are suppressed, improving the efficiency. Moreover, it has the merits of continuous input current and common ground. To demonstrate the superior performances of the presented converter, the principle of operation and steady‐state analysis are presented in detail. At last, a 100‐W experimental prototype was designed to verify the correctness of the theoretical analysis, with a maximum efficiency of 95.7% in step‐up mode and 96.8% in step‐down mode.

show abstract

Modified SEPIC DC-DC Converter with Wide Step-up/Step-down Range for Fuel Cell Vehicles

Cited by 12 publications

References 0 publications

Implementation of a novel buck-boost converter based on coupled inductor for renewable energy applications

Implementation of a novel buck-boost converter based on coupled inductor for renewable energy applications

A non‐isolated high quadratic step‐up converter for fuel cell electric vehicle applications

Implementation of a novel buck‐boost converter based on coupled inductor for renewable energy applications

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