A new ZVT–ZCT quasi-resonant DC link for soft switching inverters

Ürgün, Satılmış; Erfidan, Tarık; Bodur, Haci; Çakır, Bekir

doi:10.1080/00207210903168322

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…The following general comments about the operation of the new converter are essential to understand the design procedure and the features of the converter, which are similarly mentioned for DC -DC converter in [16].…”

Section: Design Proceduresmentioning

confidence: 98%

Zero-voltage transition–zero-current transition pulsewidth modulation DC–DC buck converter with zero-voltage switching–zero-current switching auxiliary circuit

Ürgün

2012

IET Power Electron.

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In this study, a new zero-voltage transition (ZVT) -zero-current transition (ZCT) quasi-resonant buck converter, which ensures zero crossings at any time required for soft switching (SS) and provides ZVT turn-on and ZCT turn-off together for the main switch of active snubber cell in buck converter is presented. The proposed circuit combines the most of the advantageous features of the circuits presented previously and overcomes most of drawbacks of these circuits by using only one auxiliary switch with fewer other components. Consequently, new ZVT -ZCT quasi-resonant buck converter, which is verified by a prototype of a 0.4-kW and 100-kHz circuit, is analysed in detail. All semiconductor devices operate under SS, the main switch is subjected to no additional voltage and current stresses, and the stress on the auxiliary switch is very low in the proposed new converter.

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Section: Design Proceduresmentioning

confidence: 98%

Zero-voltage transition–zero-current transition pulsewidth modulation DC–DC buck converter with zero-voltage switching–zero-current switching auxiliary circuit

Ürgün

2012

IET Power Electron.

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“…In ZVT structures [10], switches' voltages reach zero before switching and soft-switching condition is provided. Also, in ZCT approach, switches' currents reach zero before switching and the switching losses are eliminated [11][12][13][14]. In these structures, voltage stress is high.…”

Section: Introductionmentioning

confidence: 99%

“…The presented structure in [13] can provide soft-switching condition for both switch's turn on and turn off. In [14], the auxiliary switch frequency is more than the main switch frequency and it causes more losses.…”

Section: Introductionmentioning

confidence: 99%

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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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Resonant DC link soft-switching inverter with low-loss auxiliary circuit

Wang

2019

International Journal of Electronics

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A new ZVT–ZCT quasi-resonant DC link for soft switching inverters

Cited by 9 publications

References 11 publications

Zero-voltage transition–zero-current transition pulsewidth modulation DC–DC buck converter with zero-voltage switching–zero-current switching auxiliary circuit

Zero-voltage transition–zero-current transition pulsewidth modulation DC–DC buck converter with zero-voltage switching–zero-current switching auxiliary circuit

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

Resonant DC link soft-switching inverter with low-loss auxiliary circuit

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