New Interleaved Structure with High Voltage-Gain and Low Voltage-Stress on Semiconductors

Alavi, Peyman; Marzang, Vafa; Nazari, Erfan; Dezhbord, Morteza; Babaei, Ebrahim

doi:10.1109/pedstc.2019.8697271

Cited by 18 publications

(4 citation statements)

References 13 publications

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“…8b shows the current waveforms of the auxiliary capacitors (i A1 and i A2 ). From this figure and considering (5), it can be seen that these currents have reverse changes. Fig.…”

Section: Resultsmentioning

confidence: 88%

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Study and analysis of a DC–DC soft‐switched buck converter

Alavi

Babaei

Mohseni

et al. 2020

IET Power Electronics

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In this study, a soft-switched buck converter is proposed and analysed. In this structure, by adding an auxiliary inductor and two auxiliary capacitors, zero-voltage switching condition for switch's turn on and near to soft-switching condition for switch's turn off are provided. Furthermore, the power diode turns off under zero-current switching condition. As a result, switching losses and reverse recovery losses have been eliminated, and the proposed converter can provide high efficiencies. To prove the mentioned advantages, a 200 W laboratory prototype of the proposed converter is built and its results are investigated completely. On the basis of these results, the proposed converter can provide 96.1% experimental efficiency at 200 W output power, which proves the 96.78% theoretical efficiency. Also, in comparison results, it is shown that this converter not only provides higher efficiency in comparison with other structures, but also it has less components and simpler structure than other related buck converters.

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“…8b shows the current waveforms of the auxiliary capacitors (i A1 and i A2 ). From this figure and considering (5), it can be seen that these currents have reverse changes. Fig.…”

Section: Resultsmentioning

confidence: 88%

“…Nowadays, DC-DC converters are widely utilised in different applications [1][2][3][4][5][6]. Buck converters, as a type of DC-DC converters, are used to decrease the constant DC voltage level.…”

Section: Introductionmentioning

confidence: 99%

Study and analysis of a DC–DC soft‐switched buck converter

Alavi

Babaei

Mohseni

et al. 2020

IET Power Electronics

Self Cite

View full text Add to dashboard Cite

show abstract

“…As a result, the power semiconductors are subjected to high voltage stress as a result of this problem [6], [7]. The source current ripple in step-up DC-DC converters should be minimal since a low source current-ripple might cause an increase in the power producer's lifetime [8]. In reality, limiting the voltage stress on the active switch and output diode if the output voltage is high is crucial, on the other hand, substantial conduction loss and high costs would result [9].…”

Section: Introductionmentioning

confidence: 99%

Non-isolated high voltage gain DC to DC converter based on the diode a capacitor switches

Billy

Hussein

2022

IJEECS

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<p><span>Many researchers have put great endeavor to develop DC converter’s designs, into studying how to increase voltage gain with low switching stress and low ripple current. This paper has proposed a circuit to boost the voltage with a high gain conversion ratio. It is a combined adverse parallel two boost conversion. Two inductors are connected on both sides of the input source to decrease the current-ripple of the input current and output sides utilizing the interleaving technique. The proposed converter integrated with an active-network circuit is based on multiplier cells and two output capacitors. The voltage gain and voltage stresses across power semiconductors have been determined using a steady-state analysis. In addition, the input current- ripple and output voltage-ripple are analysis have been reported. This converter's inductors operate in a continuous conduction mode (CCM). The designed converter is capable of achieving significant voltage gain while maintaining a low duty ratio. Furthermore, the active switches and output diodes are under low voltage stress. As a result, low voltage components can be used to decrease conduction loss and cost. Finally, this converter was simulated in MATLAB/Simulink software to verify the theoretical calculations.</span></p>

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“…Nowadays, DC–DC converters play an important role in renewable energies interfaces [1–5] where the boost converters as a common type are implemented to increase the DC voltage range. Due to their simple structures, boost converters are used in power factor correction applications too [6].…”

Section: Introductionmentioning

confidence: 99%

New auxiliary circuit for boost converter to achieve soft‐switching operation and zero input current ripple

Alavi

Khoshkbar-Sadigh

Babaei

et al. 2020

IET power electron.

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In this study, a simple auxiliary circuit is proposed and investigated to provide soft‐switching operation in the boost converter. The proposed auxiliary circuit includes only a small auxiliary inductor and two auxiliary capacitors. In this structure, by implementing the auxiliary inductor, a negative current flows through the power switch before its turn‐on moment. Therefore, the power switch turns on under zero voltage switching condition. In addition, by properly designing the parallel capacitor of the power switch, a soft‐switching condition can be achieved for its turn‐off. Furthermore, implementing this simple auxiliary circuit can be helpful to decrease the reverse recovery losses of the diode since the diode turns off under zero current switching condition. Another advantage of the proposed structure is its zero input current ripple. In this study, the performance of the proposed auxiliary circuit with conventional boost converter has been analysed, and designing the methodology of the auxiliary components is presented. Voltage stress and power loss of components, converter voltage gain, and closed‐loop model of the converter have been investigated. Moreover, the performance of the proposed auxiliary circuit is compared with previous works and its operation is investigated in a 200 W laboratory prototype.

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New Interleaved Structure with High Voltage-Gain and Low Voltage-Stress on Semiconductors

Cited by 18 publications

References 13 publications

Study and analysis of a DC–DC soft‐switched buck converter

Study and analysis of a DC–DC soft‐switched buck converter

Non-isolated high voltage gain DC to DC converter based on the diode a capacitor switches

New auxiliary circuit for boost converter to achieve soft‐switching operation and zero input current ripple

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