A non‐isolated high gain DC‐DC converter with coupled‐inductor and built‐in transformer for grid‐connected photovoltaic systems

Kokkonda, Karun; Kulkarni, P. S.

doi:10.1002/cta.3277

Cited by 10 publications

(10 citation statements)

References 52 publications

(67 reference statements)

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“…Due to the long interval charging profiles of BSSs, the batteries' lifespan can be increased [81]. Most of the charging stations contain a high-voltage gain DC-DC converter for producing high power at its output [82]. Since the power obtained from the batteries and supercapacitors is very low, a high-voltage DC-DC converter must be established for meeting the requirements of the load [83].…”

Section: Converters For Electric Vehiclesmentioning

confidence: 99%

An Extensive Critique on Electric Vehicle Components and Charging Systems

Iqubal

Sathiyan

Stonier³

et al. 2022

International Transactions on Electrical Energy Systems

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Nowadays the demand for electric vehicles has been increasing due to their dropping price range and zero emission of carbon. This article initially discusses the development of various electric vehicles from the past to the present. Since the electric motor plays a significant role in EVs, various motors suitable for EVs have been identified and surveyed in this work. The battery storage system is a critical component of EVs; hence, the article goes over all the different types of batteries, from lead acid to lithium ion. Additionally, the other vehicle components such as converters required for charging the batteries, intelligent controllers, electric vehicle charging process, power management, and battery energy management concepts that are available are discussed in detail. Moreover, we bring our work to a conclusion by outlining the research opportunities that remain for the academic and industrial groups. Therefore, the proposed work intends to assist as a state-of-the-art reference for researchers in the field of various electric vehicle configurations, storage systems, converter configurations, charging techniques, control methods, and modulation methods.

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Section: Converters For Electric Vehiclesmentioning

confidence: 99%

An Extensive Critique on Electric Vehicle Components and Charging Systems

Iqubal

Sathiyan

Stonier³

et al. 2022

International Transactions on Electrical Energy Systems

View full text Add to dashboard Cite

show abstract

“…Initially, a transformer-based converter can produce a higher output voltage by adjusting the transformer turns ratio by providing galvanically isolation. 5 However, the size and volume of the transformer are not affordable in the FCEV applications. Then, the voltage multiplier cell (VMC) technique has been a popular solution to achieving a high gain by integrating VMC with a conventional converter.…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, the literature has adopted various step‐up methods to enhance the voltage gain. Initially, a transformer‐based converter can produce a higher output voltage by adjusting the transformer turns ratio by providing galvanically isolation 5 . However, the size and volume of the transformer are not affordable in the FCEV applications.…”

Section: Introductionmentioning

confidence: 99%

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.

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“…9 Numerous converters have been proposed by various researchers with isolation to extend the voltage gain. [10][11][12][13][14] The high-frequency transformer helps to boost up the voltage to a higher level. However, it increases the cost, size, and proportional weight of the converter.…”

Section: Introductionmentioning

confidence: 99%

A single switch hybrid quadratic converter for grid‐integrated renewable energy system

Thirukkuralkani¹,

Srinivasan²,

Karthikeyan

2023

Circuit Theory & Apps

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SummaryTo interface the electricity grid with renewable energy system applications, the system voltage is to be stepped up to a higher level. Here, the interfacing converter along with the transformer unit becomes an essential stage. Due to this traditional approach and the presence of a transformer, the size and cost of the entire unit are higher and reduce the efficiency of the system drastically with large space requirements, especially under light load conditions. To overcome this limitation, various dc‐dc converters have been proposed by researchers; however, the components' utilization and operation range of duty cycles are higher to obtain a higher voltage level. This particular paper proposes a novel single‐switch hybrid quadratic converter (HQC) for a grid‐integrated renewable energy system. The main objective of this proposed approach is to minimize the components count utilized in the converter with lower device stress to achieve higher gain; hence, it improvises the efficiency. The operational waveforms and mathematical relations based on the corresponding equivalent circuit are discussed in detail. To understand and analyze the merits of various performance parameters, the detailed comparative performance of the proposed HQC with existing converters is summarized in this paper. Finally, to validate and verify the novelty, the 500‐W experimental prototype was built and experimental results were captured and presented in this paper. It is observed that the proposed HQC can yield an efficiency of more than 95% under a lower range of duty cycles.

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A non‐isolated high gain DC‐DC converter with coupled‐inductor and built‐in transformer for grid‐connected photovoltaic systems

Cited by 10 publications

References 52 publications

An Extensive Critique on Electric Vehicle Components and Charging Systems

An Extensive Critique on Electric Vehicle Components and Charging Systems

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

A single switch hybrid quadratic converter for grid‐integrated renewable energy system

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