Quasi-Clamped ZSI With Two Transformers

Aleem, Zeeshan; Yang, Hyoung-Kyu; Ahmed, Hafiz Furqan; Park, Jung–Wook

doi:10.1109/tie.2020.3028797

Cited by 6 publications

(5 citation statements)

References 35 publications

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“…By substituting N1/N2=100/35 in (15), the voltage stress on the switches can be obtained as in (16). Note that N2/N1=35/100 is assumed for fair comparison as in [24].…”

Section: B Voltage Stress Across the Power Switchesmentioning

confidence: 99%

“…Recently, several clamping circuits have been designed to remove DC-link voltage overshoots across the inverter bridge. An extra diode has been exploited in the modified Γ-source inverter, improved Σsource inverter, and enhanced trans Z-source inverter to suppress voltage spikes on the power switches [13][14][15]. However, these inverters cannot offer higher voltage boost ability than their counterpart original topologies.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improved High Step-Up Cockcroft-Walton Magnetic Coupling Inverter

Esmaeili

Khan

Jamil

et al. 2023

IEEE Trans. Circuits Syst. II

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“…By substituting N1/N2=100/35 in (15), the voltage stress on the switches can be obtained as in (16). Note that N2/N1=35/100 is assumed for fair comparison as in [24].…”

Section: B Voltage Stress Across the Power Switchesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved High Step-Up Cockcroft-Walton Magnetic Coupling Inverter

Esmaeili

Khan

Jamil

et al. 2023

IEEE Trans. Circuits Syst. II

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“…Where ρ, MLT, n1, Ii, INp-S, WA, Ku present the wire effective resistivity, mean length per turns, primary winding turns, RMS current of inductor, RMS current of winding, core window area, and winding fill factor, respectively. Also, the core loss is obtained from (19). Notably, Kfe, Bmax, β, AC, lm represent core loss coefficient, peak ac flux density, core loss exponent, core cross-sectional area, and mean magnetic path length, respectively.…”

Section: Power Loss Analysismentioning

confidence: 99%

“…In dc-dc impedance source converters, coupled inductors are applied 2 into impedance networks to provide high voltage boost ability with the small duty cycle of converters [11]. Meanwhile, coupled inductors based impedance source inverters appeal to researchers more and more because of their high voltage boost ability with high modulation ratio and low stress across the semiconductors devices [12][13][14][15][16][17][18][19]. Single-phase Z-source AC-AC converters based on coupled inductors have been introduced to control ac voltage by adjusting their turn ratio besides the duty cycle of converters.…”

Section: Introductionmentioning

confidence: 99%

Magnetically Coupled Single-Phase AC-AC Converter With Reduced Number of Passive Components

et al. 2022

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An AC-AC direct single-phase converter based on an impedance network is presented in this manuscript. It possesses all privileges of similar impedance source AC-AC converters such as buck-boost ability, maintaining or reversing the phase angle and sharing the same ground between input and output voltage. Furthermore, a magnetic coupling is exploited to provide high voltage gain by adjusting its turns ratio along with the duty cycle. A safe commutation strategy is implemented to avoid current and voltage spikes across switches needless to utilize snubber circuits. The presented converter offers continuous input current, and ac to ac conversion is done directly without using dc storage, making it appropriate for dynamic voltage restorer to compensate voltage sags and voltage swells. In addition, LC input and output filters are eliminated thanks to impedance network structure. In this regard, the presented topology offers good features in size and cost by reducing passive components compared to similar structures. Also, the comparative investigation shows that the proposed converter benefits from superior operational ranges among similar well-known topologies for the same conditions. Finally, theoretical analyses and operation modes of the proposed converter are discussed and testified by both simulation and experimental results.

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“…A path for discharging the energy of this inductor cannot be found in this situation. This problem causes clamping diodes, as demonstrated by [12].…”

Section: Introductionmentioning

confidence: 99%

Coupled Inductor Assisted High-Voltage Gain Half-Bridge Z-Source Inverter

Aalami

Babaei

Zadeh

2023

IEEE Open J. Ind. Electron. Soc.

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A half-bridge-based impedance-source inverter with two T-shaped coupled inductors is proposed in this article. Unlike the conventional half-bridge structure, the proposed topology can generate a zero-voltage level at its output stage. First, the proposed configuration and its modulation method are described, which will analyze the topology's various operational modes. Second, the boost factor is determined, and a way to design the necessary passive devices is found. Third, a power loss breakdown study is investigated in order to devise a solution to improve the efficiency of the proposed structure. Fourth, various comparisons show the benefits and drawbacks of the presented design. These comparisons show that the proposed topology can provide a high boost factor when coupled inductors are used. Furthermore, it has reduced voltage stresses on the components, resulting in a smaller size and lower cost. Finally, the experimental results are obtained by employing a prototype designed by the methodology presented in this article. These results are used as a benchmark to determine whether the proposed topology works well. In addition, the power loss analysis and efficiency comparison are displayed.INDEX TERMS Half-bridge inverter, half-bridge-based Z-source inverter, impedance-source inverter, Z-source inverter.

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Quasi-Clamped ZSI With Two Transformers

Cited by 6 publications

References 35 publications

Improved High Step-Up Cockcroft-Walton Magnetic Coupling Inverter

Improved High Step-Up Cockcroft-Walton Magnetic Coupling Inverter

Magnetically Coupled Single-Phase AC-AC Converter With Reduced Number of Passive Components

Coupled Inductor Assisted High-Voltage Gain Half-Bridge Z-Source Inverter

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