Coupled Inductor-Based High Voltage Gain DC–DC Converter For Renewable Energy Applications

Mirzaee, Afshin; Moghani, Javad Shokrollahi

doi:10.1109/tpel.2019.2956098

Cited by 60 publications

(29 citation statements)

References 37 publications

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“…Table Ⅲ shows the comparison of other converters with two-windings and three-windings coupled inductors. Under the same operating conditions including input voltage, output voltage and duty cycle, the voltage stresses of switches are same for all converters except [23], which has highest voltage stress on the switch. Current stress across switches of the proposed converter are also the lowest compared to other converters.…”

Section: Topology Derivationmentioning

confidence: 99%

High step-up ZVT Converter Based on Active switched Coupled inductors

Tang¹,

Tong

Afzal

et al. 2024

IEEE Access

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To meet the requirements of high voltage boosting and high efficiency, a novel high step-up zero voltage transition (ZVT) DC/DC converter based on active switched-inductor (ASL) is proposed. This converter combines ASL and coupled inductor structure, thus can reduce the voltage and current stress of power switch, and the active clamping technology provides zero voltage transition (ZVT) for all switches. The coupled inductors can realize relatively high voltage gain with appropriate turns ratio while all magnetic components can be integrated in one core. In addition, thanks to the leakage inductance, the reverse recovery problem of diodes is resolved. The working principle of the proposed converter is analyzed in detail, also the characteristics including voltage gain, the condition of ZVT is discussed. Then, a family of derived converters are listed and compared to each other. According to the proposed converter, a 500W prototype with 100kHz switching frequency is established in the lab, and the experimental results are given to verify the analysis. INDEX TERMS High step-up voltage gain; Active switched-coupled inductor; ASL; Coupled inductor; Zero voltage transition This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.

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Section: Topology Derivationmentioning

confidence: 99%

High step-up ZVT Converter Based on Active switched Coupled inductors

Tang¹,

Tong

Afzal

et al. 2024

IEEE Access

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“…This result corroborates the theoretical analysis previously presented. Replacing these values in (16), the output power is:…”

Section: Boostmentioning

confidence: 99%

“…Unfortunately, these sources provide low output voltages when compared to the peak value of grid voltage, therefore high gain step-up dc-dc converters are required to efficiently comply with the requirements for grid connection [4]. In light of this, the literature has presented several topologies of high gain step-up dc-dc converters in the past few years [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Conversely, non-isolated topologies make use of techniques to increase the voltage gain [9], such as: switched capacitors and/or inductors cells [10][11][12][13], coupled inductors [14][15][16], cascaded and stacked connections [17,18], or a combination of them [10][11][12]. Switched and coupled inductors can also imply voltage spikes on the power switches, requiring clamping circuits or snubbers to smooth it.…”

Section: Introductionmentioning

confidence: 99%

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Partial Power Processing and Efficiency Analysis of dc-dc Differential Converters

2022

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This paper presents a partial power processing and an efficiency analysis of dc-dc differential converters based on the use of two basic converters of the same group: the positive or negative group. The paper contributes theoretical analysis and demonstrates that the differential converters based on the positive group process has more power than the load requires, and that the differential converters based on the negative group process has less power than the load needs. This is an important advantage of the negative group converters, since a parcel of the output power is directly transferred by the input source to the load, resulting in partial power processing. In order to verify the theoretical analysis herein developed, ten prototypes are evaluated considering an input voltage of 20 V and output power of 100 W.

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“…A high step-up converter based on coupled inductor is a reasonable choice and is actively adopted in modern-day microgrids. Figure 4 shows the high step-up converter topology [23], used here for the connection of solar PV to the 400 V bus. It consists of two switches, namely, the main switch S m and the auxiliary switch S aux , input inductor L in , primary and secondary windings of the coupled inductance (N p and N s ), blocking capacitor C b , clamp capacitor C c , capacitor C m , diode D m , output diode D o , and output capacitor C DC .…”

Section: Highmentioning

confidence: 99%

Resiliency-Driven Approach of DC Microgrid Voltage Regulation Based on Droop Index Control for High Step-Up DC-DC Converter

Thogaru

Naware

Mitra

et al. 2022

International Transactions on Electrical Energy Systems

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Regulation of DC microgrid voltage in presence of variable sources and loads is quite challenging. The ability of a microgrid to pay off the critical loads when subjected to disturbances, such as utility grid outage/poor climatic conditions, has gained importance recently. To address the above issues, we propose a resiliency analysis of a DC microgrid interconnected with 400 V and 200 V buses. The interconnected microgrid system is fed with solar PV along with the energy storage system and is integrated with a utility grid. Boost and high step-up DC-DC converters are employed for DC bus voltage regulation with droop index control. Here, the droop coefficient is optimized using particle swarm optimization (PSO) while maintaining uninterrupted service to critical loads and for satisfactory voltage regulation. The effectiveness of the droop index control method is tested in comparison to other optimization techniques and also with the conventional method. The resiliency analysis of the overall system, aiming for continuous power supply to the critical loads while maintaining the grid voltage unaffected, is carried out in grid outage, low solar insolation, and grid restoration conditions. The reliability of the interconnected DC microgrid test system is evaluated using the loss of power supply probability index for normal, grid outage, and grid restoration conditions. The system is implemented using PSCAD/EMTDC platform. Finally, the experimental prototype of a high step-up DC-DC converter is developed and tested to validate the effectiveness of the droop index controller with an optimized droop coefficient.

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Coupled Inductor-Based High Voltage Gain DC–DC Converter For Renewable Energy Applications

Cited by 60 publications

References 37 publications

High step-up ZVT Converter Based on Active switched Coupled inductors

High step-up ZVT Converter Based on Active switched Coupled inductors

Partial Power Processing and Efficiency Analysis of dc-dc Differential Converters

Resiliency-Driven Approach of DC Microgrid Voltage Regulation Based on Droop Index Control for High Step-Up DC-DC Converter

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