Implementation of high‐gain nonisolated DC‐DC converter for PV‐fed applications

Arunkumari, T.; Indragandhi, V.; Arunkumar, G.; Padmanaban, Sanjeevikumar; Holm‐Nielsen, Jens Bo

doi:10.1002/2050-7038.12165

Cited by 13 publications

(10 citation statements)

References 26 publications

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“…Using the current balance principle on capacitors, the average currents through inductors, switches, diodes, and V in can be expressed as shown in (9). The approximate values of RMS current through different components are shown in ( 10) and (11).…”

Section: Calculation Of Average and Rms Currentsmentioning

confidence: 99%

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A transformerless high gain dc–dc boost converter with reduced voltage stress

Zaid

Khan

Siddique

et al. 2021

Int Trans Electr Energ Syst

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Summary In this paper, a modified and improved high gain dc–dc boost converter is proposed. The converter has utilized two voltage multiplier cells (VMCs) comprising switched capacitors (SC) and switched inductors (SL) to increase the voltage gain of the converter. The basic concept of these switched topologies is that when the switch is ON, the energy is stored by the inductor and the capacitor transfers its energy to load and inductor. In the OFF cycle, the inductor transfers its energy to the capacitor, and, simultaneously, capacitor is charged through input voltage also. As compared to other nonisolated topologies, the proposed converter has a high voltage gain and low voltage stress across semiconductor devices. The voltage stress on all capacitors except the output capacitor is less than the voltage across the load. A detailed analysis of the converter in continuous conduction (CCM) and discontinuous conduction modes (DCM) is shown. The proposed converter has a peak efficiency of 94.8%. For the efficiency calculation of the proposed topology, PLECS software is used. The experimental results agree with the theoretical analysis and validate the working and performance of the proposed converter.

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Section: Calculation Of Average and Rms Currentsmentioning

confidence: 99%

“…SC‐based dc–dc converters are proposed by authors in Refs. 9,10. SC, when used in the dc‐dc converter not only increases the gain but also improves the voltage regulation.…”

Section: Introductionmentioning

confidence: 99%

A transformerless high gain dc–dc boost converter with reduced voltage stress

Zaid

Khan

Siddique

et al. 2021

Int Trans Electr Energ Syst

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“…Hybrid structures with switched inductors [7] and multilevel structures using switched capacitors [8] are used to increase the gain of the converter. A VMC made up of a switched inductor limits the high ripple in input current, whereas in switched capacitor topologies high spike in charging current is noticed [9]. Some topologies use voltage doublers before the output to reduce the stress and increase the voltage gain, at the cost of an increase in the number of components [10].…”

Section: Introductionmentioning

confidence: 99%

A Family of Transformerless Quadratic Boost High Gain DC-DC Converters

et al. 2021

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This paper presents three new and improved non-isolated topologies of quadratic boost converters (QBC). Reduced voltage stress across switching devices and high voltage gain with single switch operation are the main advantages of the proposed topologies. These topologies utilize voltage multiplier cells (VMC) made of switched capacitors and switched inductors to increase the converter’s voltage gain. The analysis in continuous conduction mode is discussed in detail. The proposed converter’s voltage gain is higher than the conventional quadratic boost converter, and other recently introduced boost converters. The proposed topologies utilize only a single switch and have continuous input current and low voltage stress across switch, capacitors, and diodes, which leads to the selection of low voltage rating components. The converter’s non-ideal voltage gain is also determined by considering the parasitic capacitance and ON state resistances of switch and diodes. The efficiency analysis incorporating switching and conduction losses of the switching and passive elements is done using PLECS software (Plexim, Zurich, Switzerland). The hardware prototype of the proposed converters is developed and tested for verification.

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“…Multi‐input converters (MICs) are attracted in interfacing the independent energy sources utilized in grid‐connected and electrical vehicle applications. Furthermore, compared to several separate dc‐dc converters, MICs require fewer components count and compact structures [1,2]. This leads to reducing the complexity and cost of the converter and also higher power density.…”

Section: Introductionmentioning

confidence: 99%

Integratedmulti‐input DC‐DCconverter with reduced switches

Dhananjaya

Pilla²,

Gorripotu³

2021

Int Trans Electr Energ Syst

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Summary Multi‐input converters (MICs) play an important role in integrating the independent energy sources utilized in the grid‐connected system and electric vehicle applications. In this scenario, several types of MICs are presented in the literature. Most of the MICs are operated using a time‐sharing scheme. This leads to a restricted duty cycle which limits the energy source utilization and output voltage. To overcome the above‐mentioned limitations, a multi‐input single‐output converter is proposed. The utilization of energy sources and output voltage can be improved with a reduction in the part count. A 400 W prototype is designed to check the feasibility of the proposed system, and the subsequent simulation and experimental results are validated.

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Implementation of high‐gain nonisolated DC‐DC converter for PV‐fed applications

Cited by 13 publications

References 26 publications

A transformerless high gain dc–dc boost converter with reduced voltage stress

A transformerless high gain dc–dc boost converter with reduced voltage stress

A Family of Transformerless Quadratic Boost High Gain DC-DC Converters

Integratedmulti‐input DC‐DCconverter with reduced switches

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