A highly efficient ZVT–ZCT PWM boost converter with direct power transfer

Şahin, Yakup; Tınğ, Naim Süleyman; Aksoy, İsmail

doi:10.1007/s00202-017-0546-y

Cited by 14 publications

(8 citation statements)

References 24 publications

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“…However, in these devices, increasing the switching speed causes electromagnetic interference (EMI) to increase [2]. To decrease both switching losses and EMI in power converters, soft switching techniques are used [1,[3][4][5][6][7]. In PWM DC-DC converters, soft switching techniques are provided using snubber cells.…”

Section: Introductionmentioning

confidence: 99%

New active snubber cell for high power isolated PWM DC–DC converters

Yeşilyurt¹,

Bodur²

2019

IET Circuits, Devices & Systems

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Here, a new active snubber cell for high-power isolated pulse-width-modulated (PWM) DC-DC converters is proposed. All semiconductor power devices in the proposed converters operate with full soft switching under a very wide load range, and they are not exposed to any voltage and current stress. The main switches turn on with zero-voltage transition (ZVT) and turn off with zero-voltage switching (ZVS). The auxiliary switches turn on with zero-current switching (ZCS) and turn off with ZVS. The theoretical analysis and design procedure for the proposed active snubber cell are carried out in detail and are verified with a half-bridge (HB) converter implementation having 20V output voltage, 50 A output current, and 80 kHz switching frequency. The overall efficiency of the HB DC-DC converter is increased from about 83% in the hard switching condition to about 90% thanks to the proposed active snubber cell.

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Section: Introductionmentioning

confidence: 99%

New active snubber cell for high power isolated PWM DC–DC converters

Yeşilyurt¹,

Bodur²

2019

IET Circuits, Devices & Systems

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“…These issues are mainly low power density, switching power losses, electromagnetic interference (EMI), high reverse recovery losses and so on. To eliminate these issues at high switching frequencies, the soft switching (SS) techniques are introduced in the literature [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Design and application of a novel snubber cell for soft switched pwm dc–dc converters

Şahin

Tınğ

2019

Sādhanā

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This paper introduces a novel active snubber cell for soft switching PWM DC-DC converters. In the proposed converter, the main switch is turned on under zero voltage transition (ZVT) and turned off under zero voltage switching (ZVS). The auxiliary switch and all of the other semiconductors in the converter are turned on and off with soft switching (SS). There is no extra voltage stress on the semiconductor devices. Besides, the proposed converter has simple structure and ease of control due to common ground. In this treatise, the theoretical and mathematical analysis of the proposed converter are presented and the design procedure of converters is also provided. The simulation study at 100 kHz switching frequency and 600 W output power are conducted. The experimental prototype of converter is operated under same conditions. Both the simulation and the experimental prototype exhibits similar performances. Ultimately, the efficiency of the proposed converter is 95.7% at nominal power.

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“…The best solution to overcome these drawbacks is combining the ZCT and ZVT techniques. Many studies have been made on the subject of combining ZCT and ZVT (ZCZVT) [12][13][14][15][16][17][18]. Some disadvantages occur with several soft-switched converters in the literature.…”

Section: Introductionmentioning

confidence: 99%

A New Soft-Switched ZCZVT-PWM DC-DC Boost Converter

SAHIN¹,

TING²

2018

SDÜ Fen Bil Enst Der

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In this paper, a new soft-switched zero-current transition and zerovoltage transition (ZCZVT) converter is proposed for family pulse width modulation (PWM) DC-DC converters. The proposed new converter assures the main switch turning on under zero-voltage transition and turning off under zerocurrent transition. The proposed new converter also decreases electromagnetic interference noises and operates under soft switching in a wide input voltage range. There is no additional voltage or current stress on the main devices. The proposed converter has low cost and simple control and structure. The theoretical analysis of the converter is clarified and the operating intervals are given in detail.The experimental results of the converter are obtained by a prototype with 500 W and 100 kHz. The overall efficiency of the proposed converter is 98.5% at nominal output power.

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A highly efficient ZVT–ZCT PWM boost converter with direct power transfer

Cited by 14 publications

References 24 publications

New active snubber cell for high power isolated PWM DC–DC converters

New active snubber cell for high power isolated PWM DC–DC converters

Design and application of a novel snubber cell for soft switched pwm dc–dc converters

A New Soft-Switched ZCZVT-PWM DC-DC Boost Converter

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