Multi‐input high step‐up inverter with soft‐switching capability, applicable in photovoltaic systems

Babaei, Ebrahim; Tarzamni, Hadi; Tahami, Farzad; Jahan, Hossein Khoun; Sharifian, Mohammad Bagher Bannae

doi:10.1049/iet-pel.2018.5801

Cited by 17 publications

(9 citation statements)

References 38 publications

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“…But, the step-up or boost SCMLIs like [11], [20]- [24] have voltage boosting ability and can produce larger voltage than total inputs. The voltage boosting ability becomes very vital for grid-tied SCMLIs fed by Photovoltaics (PVs) or Fuel Cells (FCs), where the input voltage(s) is (are) much less than the grid voltage [25], [26]. The semiconductors' blockingvoltage is relatively high in step-up SCMLIs that may impact the price and efficiency of converter [27].…”

Section: Introductionmentioning

confidence: 99%

Single-Input Quadruple-Boosting Switched-Capacitor Nine-Level Inverter With Self-Balanced Capacitors

et al. 2022

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This paper suggests a single-input switched-capacitor Nine-level inverter configuration advantaging from quadruple voltage-boosting ability, natural voltage balancing of capacitors, and reduced components per level. Also, the single-source character of the proposed topology makes it cheaper and more compact. The cascaded version of the suggested topology has also been introduced, by which high boosting factors, as well as large number of steps, can be obtained. The proposed topology can effectively supply the resistive-inductive or pure inductive load types. The capacitors' impulsive-charging-current issue has been solved by simple small-inductance-based inductor-diode (L-D) networks. The comparative analysis affirms the fewer device-usage in suggested configuration per equal gain or level count than existed structures, resulting in less size and cost. The usage of Nearest-Level modulation guarantees the lowfrequency operation of semiconductors and reduces the switching losses. The comparative analysis and experimental outcomes affirm the competitiveness and accurate functionality of suggested configuration.INDEX TERMS Multilevel inverter, number of levels, self-balanced capacitors, switched-capacitor, voltage gain.

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Section: Introductionmentioning

confidence: 99%

Single-Input Quadruple-Boosting Switched-Capacitor Nine-Level Inverter With Self-Balanced Capacitors

et al. 2022

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“…4,5 This capability shows its role in dominant applications such as uninterruptible power supplies use as backup for energy systems, renewable energy systems, and hybrid electrical vehicles. 6 Considering various approaches, interleaving and using coupled inductors (CIs) are two popular techniques to satisfy high output voltage gain and avoid the requirement of high duty cycle values, which alleviates the reverse-recovery power loss issue in the rectifier diodes. 7 In Hu et al, 8 a hybrid interleaved DC-DC converter with high step-up capability is presented to recycle the leakage energy of CI and reach wide output voltage range.…”

Section: Introductionmentioning

confidence: 99%

“…Among main design features of power electronic DC–DC converters, 1–3 achieving high output voltage gain is of high importance 4,5 . This capability shows its role in dominant applications such as uninterruptible power supplies use as backup for energy systems, renewable energy systems, and hybrid electrical vehicles 6 . Considering various approaches, interleaving and using coupled inductors (CIs) are two popular techniques to satisfy high output voltage gain and avoid the requirement of high duty cycle values, which alleviates the reverse‐recovery power loss issue in the rectifier diodes 7 .…”

Section: Introductionmentioning

confidence: 99%

Operation and design analysis of an interleaved high step‐up DC–DC converter with improved harnessing of magnetic energy

Sabahi

Tarzamni

Kolahian

2021

Circuit Theory & Apps

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In this paper, a new interleaved DC-DC converter based on a coupled and a single input inductor is proposed. The suggested high step-up converter utilizes various inductive and capacitive methods to transfer magnetic energy more efficiently. The output voltage is regulated with the switches' duty cycle and the coupled inductor (CI) turns ratio, which provide a wide output voltage range. Interleaving improves the converter reliability, employs both the first and third areas of CI's B-H plane, cancels DC component of the CI, and reduces the input current ripple of the proposed converter with twice switching frequency. Utilization of two output ports for voltage stress and ripple reduction in each port, recycling the stored energy of inductances in both forward and flyback mechanisms, alleviation of switch voltage spikes, operation without circulating current, high power density, independency of switch voltage stress to the CI turns ratio, and continuous input current can be mentioned as other features. In this paper, continuous and discontinuous conduction modes' steady-state analytics, power loss calculations, and design procedure of the proposed converter are followed with comprehensive comparisons to evaluate the capabilities. Eventually, experimental results are presented to validate theoretical calculations.

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“…In the massive energy harvesting technologies development today, using different types of renewable energies, such as photovoltaic and fuel cells, is inevitable due to the deficiency in fossil fuels and alarming conditions of environmental issues [1,2]. High performance high stepup DC-DC converters are indispensable for such applications in which the low output voltage (typically lower than 50 V ) should be boosted to a desired level [3].…”

Section: Introductionmentioning

confidence: 99%

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

Tarzamni¹,

Kurdkandi

Gohari

et al. 2021

IEEE Access

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In this paper, a new family of ultra-high step-up DC-DC converters based on a center-tapped coupled inductor (CI) is proposed. These single-switch converters employ different inductive and capacitive power transfer techniques by utilizing multi-winding CIs, intermediate capacitor links and simple switchedcapacitors to improve the transferred power rate, harvest magnetizing and leakage inductance energies, and enhance power density. Achieving high voltage gain in low duty cycle values enables the proposed converters to operate under wide output voltage ranges; meanwhile, distributing the output voltage on two or three output ports alleviates the voltage stress on output terminal components. Low input current ripple, simple pulse width modulation control, low switch voltage stress and operation without circulating current can be listed as other features. In this paper, the proposed family is introduced, theoretically analyzed and compared with other state-of-the-art researches. Finally, the accuracy of analyses are evaluated with some experimental tests of a 1.25 kW experimental prototype.INDEX TERMS DC-DC converter, high step-up power converter, center-tapped coupled inductor.

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Multi‐input high step‐up inverter with soft‐switching capability, applicable in photovoltaic systems

Cited by 17 publications

References 38 publications

Single-Input Quadruple-Boosting Switched-Capacitor Nine-Level Inverter With Self-Balanced Capacitors

Single-Input Quadruple-Boosting Switched-Capacitor Nine-Level Inverter With Self-Balanced Capacitors

Operation and design analysis of an interleaved high step‐up DC–DC converter with improved harnessing of magnetic energy

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

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