An Ultrahigh Voltage Gain Hybrid-Connected Boost Converter With Ultralow Distributed Voltage Stress

Hu, Xuefeng; Liu, Xing; Ma, Penghui; Jiang, Shunde

doi:10.1109/tpel.2020.2975013

Cited by 17 publications

(10 citation statements)

References 27 publications

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“…10 illuminates the voltage gain(M) according to duty cycle(D) and turns ratio(N). The proposed high step-up converter has a voltage gain(M) of up to 62.5%[N=3] higher than those of [30] and [31] while 15.7%[N=3] lower than that of [32]. Fig.…”

Section: Key Circuit Performance Comparisonmentioning

confidence: 99%

“…11 illustrates the voltage stress according to the turns ratio(N). Compared to [31], the proposed converter achieves 24% reduction in switch voltage stress. The diode voltage stress of the proposed method is 24% less than that of [31] while 44% greater than that of [32].…”

Section: Key Circuit Performance Comparisonmentioning

confidence: 99%

“…Compared to [31], the proposed converter achieves 24% reduction in switch voltage stress. The diode voltage stress of the proposed method is 24% less than that of [31] while 44% greater than that of [32]. It should be noted that the proposed high step-up converter yields a high voltage gain without increasing the number of turns ratio(N), and the circuit configuration is simple because the number of active and passive elements is small.…”

Section: Key Circuit Performance Comparisonmentioning

confidence: 99%

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Transformerless Quadruple High Step-Up DC/DC Converter Using Coupled Inductors

et al. 2022

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This paper proposes a high voltage step-up DC/DC converter by combining a coupled inductor and a voltage multiplier rectifier. The input side of the proposed converter operates in an interleaved manner with two coupled inductors connected in parallel, and the output side is composed of a voltage multiplier rectifier where two voltage doubler rectifiers are merged in series. By changing the turns ratio of the coupled inductor of the proposed converter, the voltage gain can be increased, and additional voltage gain can be obtained by combining it with a voltage multiplier rectifier. Due to the passive lossless clamping performance of the proposed method, it is possible to recycle the leakage inductance energy of the coupled inductor and voltage stress reduction can be achieved along with zero current turn-ON and turn-OFF of switches and diodes. Finally, this paper evaluates the effectiveness and practicality of the proposed method by operating a prototype circuit with an input voltage of 20V, an output voltage of 400V, and an output power of 320W. The maximum efficiency of the proposed converter is 97.2% and the efficiency at maximum power is 94.1%.INDEX TERMS DC/DC converter, high step-up, coupled inductor, voltage multiplier rectifier.

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Section: Key Circuit Performance Comparisonmentioning

confidence: 99%

Section: Key Circuit Performance Comparisonmentioning

confidence: 99%

Section: Key Circuit Performance Comparisonmentioning

confidence: 99%

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Transformerless Quadruple High Step-Up DC/DC Converter Using Coupled Inductors

et al. 2022

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“…Thus, high step-up DC-DC converters have been investigated in recent years. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] In order to increase applications of RESs, this kind of converters ought to convert voltage with ultrahigh gain respecting to the other necessary quality factors. Because of simple structure of conventional boost converter (CBC), it seems as the first suitable choice for stepping up voltage of RESs.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the studies are performed on combinations of the converters with boosting voltage techniques that improve voltage gain in lower duty cycles to prevent the negative effect. To approach higher voltage level, some boosting circuits such as switched capacitor, 21 coupled inductor, [1][2][3][4][5][6][7][8][9][10]16 multiplier cell, 13 and high frequency transformers 11,13 have been added to DC-DC converters frequently. Cascading and interleaving 18 are the two well-known stepping up techniques, each with its own advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh step‐up DC‐DC converter consisting quadratic boost converter, multiplier cell, and three windings coupled inductor

Abbasi

Tanha

Rezaie

2022

Circuit Theory & Apps

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This paper presents an ultrahigh step‐up converter with combination of a quadratic boost converter, a multiplier cell, and a three windings coupled inductor. Main advantages of the converter include its high voltage gain, low voltage stress on the switch and most of the diodes, continuity of input current with low ripple, and existence of a common ground between the source and load. Furthermore, requiring small inductors leads to high efficiency performance of the converter. To confirm superiority of the proposed converter, it has been compared with the converters consisting coupled inductors. Analysis of the converter has been performed for its main operation modes to validate its quality and quantity factors. A prototype is built in order to experiment its performance per different conditions and evaluate the analysis. Rated values per the experiments are 25, 500, and 200 W for the input voltage, output voltage, and output power, respectively.

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A high step‐up soft‐switched DC‐DC converter with reduced voltage stress for DC micro‐grid applications

Kalahasthi

Ramteke

Suryawanshi

2022

Circuit Theory & Apps

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This article proposes a non-isolated soft switched high gain DC-DC converter with reduced voltage stress across switches and diodes. This converter is suitable for renewable energy and DC micro-grid applications. High gain is obtained at lower duty and turns ratio using a voltage multiplier and two coupled inductors. An active clamp circuit is incorporated to reduce the voltage stress across the main switch and also to achieve zero voltage switching (ZVS) of both switches. Zero current switching (ZCS) of diodes during turn off is also achieved. As a result, switching losses between switches and diodes are reduced, and efficiency is improved. The working principle and theoretical analysis in continuous conduction mode (CCM) is presented. A 500 W (24 V/400 V) prototype with a high voltage gain is built up, and an efficiency of 94.87% is observed. The hardware results are in close agreement with the simulation results. K E Y W O R D Scoupled inductor, high gain, micro-grid, zero voltage switching (ZVS)

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An Ultrahigh Voltage Gain Hybrid-Connected Boost Converter With Ultralow Distributed Voltage Stress

Cited by 17 publications

References 27 publications

Transformerless Quadruple High Step-Up DC/DC Converter Using Coupled Inductors

Transformerless Quadruple High Step-Up DC/DC Converter Using Coupled Inductors

Ultrahigh step‐up DC‐DC converter consisting quadratic boost converter, multiplier cell, and three windings coupled inductor

A high step‐up soft‐switched DC‐DC converter with reduced voltage stress for DC micro‐grid applications

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