Ultra-High Step-Up DC-DC Converters Based on Center-Tapped Inductors

Tarzamni, Hadi; Kurdkandi, Naser Vosoughi; Gohari, Homayon Soltani; Lehtonen, Matti; Husev, Oleksandr; Blaabjerg, Frede

doi:10.1109/access.2021.3117856

Cited by 21 publications

(12 citation statements)

References 44 publications

(49 reference statements)

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“…Conventional boost converter topologies fall short because they are not able to provide adequately high voltage gains with low duty cycle and low losses. Therefore, high voltage gain converters with special topologies are needed to boost low voltages to the desired levels in an efficient and viable manner [2]. Adding Voltage Multiplier Cells (VMCs), Coupled Inductors (CIs), Switched Capacitor Modules (SCMs), and cascaded cells to the conventional boost structures provide opportunities to obtain higher output voltage gains.…”

Section: Introductionmentioning

confidence: 99%

Single-Switch Resonant Soft-Switching Ultra-High Gain DC-DC Converter With Continuous Input Current

et al. 2022

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An ultra-high gain DC-DC converter with single-switch structure is introduced in this paper. Full soft-witching is provided by simultaneous use of quasi-resonant performance of one resonant tank and leakage inductance of a three-winding coupled inductor (CI). Adopting the secondary and tertiary windings of the CI in separated voltage multiplier cells enables the converter to provide ultra-high voltage gain. The reverse recovery problem is resolved thanks to the quasi zero current switching performance of nearly all diodes, especially output diode because of the second resonant tank, so the total electromagnetic interference is significantly reduced. Continuous input current with low ripple expands the application of the proposed converter, especially in renewable energy applications. Steady-state performance and design considerations of the introduced converter are analyzed thoroughly and compared with recently introduced converters to establish its merits. Experimental results of a 200 W prototype are given to validate its analysis and performance.INDEX TERMS DC-DC power converter, Coupled inductor, full soft-switching, single switch structure, ultra-high step-up converter.

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Section: Introductionmentioning

confidence: 99%

Single-Switch Resonant Soft-Switching Ultra-High Gain DC-DC Converter With Continuous Input Current

et al. 2022

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“…However, adding more components to the circuit can lead to higher conduction and switching losses, and therefore the overall efficiency of the system would be reduced. Instead of increasing the number of voltage multiplier cells, an alternative approach to achieve a higher voltage gain is to adjust the number of turns ratio or include more windings to the coupled inductor [19]- [24]. However, extreme values for the number of turns ratio can have a negative impact on the efficiency and adding windings would increase the complexity of the coupled inductor design.…”

Section: Introductionmentioning

confidence: 99%

“…Another important concern in high-step-up conversion is the input current ripple. Coupled-inductor-based solutions usually have pulsating input current, and circuits using an input boost inductor were proposed to ensure low input current ripple [22]- [24], but at the cost of requiring a higher component count and increasing the volume of the system. Interleaving techniques were also employed to reduce the input current ripple in high-step-up converters, but a more complex circuit is required and therefore only viable for higher power levels [25]- [30].…”

Section: Introductionmentioning

confidence: 99%

Single-Switch High-Step-Up DC-DC Converter Employing Coupled Inductor and Voltage Multiplier Cell

2022

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This paper introduces a high-step-up dc-dc converter to provide voltage boosting in lowvoltage applications. The circuit contains only a single active switch and is based on the boost-type converter using coupled inductor and voltage multiplier cell. The proposed topology exhibits high efficiency, reduced voltage stress on the semiconductors and requires a low component count. The circuit is intended for applications with rated power in the order of a few hundreds of Watts, which corresponds to the typical level of a single photovoltaic (PV) module. A detailed mathematical description of the circuit operation is carried out, providing the means for the adequate design of the converter. The dynamic analysis is also addressed in the paper, and proper closed-loop operation is demonstrated. A 400 W prototype operating at 90 kHz, with an input voltage range of 24-48 V and output voltage of 400 V was built and tested in laboratory. Experimental results validate the analyses carried out and measurements indicate efficiency levels up to 97.5%, which ratifies the proposed converter as a good solution for typical PV applications.INDEX TERMS High voltage gain, high step-up, coupled inductor, voltage multiplier cell.

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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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Ultra-High Step-Up DC-DC Converters Based on Center-Tapped Inductors

Cited by 21 publications

References 44 publications

Single-Switch Resonant Soft-Switching Ultra-High Gain DC-DC Converter With Continuous Input Current

Single-Switch Resonant Soft-Switching Ultra-High Gain DC-DC Converter With Continuous Input Current

Single-Switch High-Step-Up DC-DC Converter Employing Coupled Inductor and Voltage Multiplier Cell

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

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