A boost PWM soft-single-switched converter with low voltage and current stresses

Lambert, José; Vieira, J.B.; Freitas, L.C. de; Barbosa, Lúcio dos Reis; Farias, V.J.

doi:10.1109/63.654956

Cited by 26 publications

(5 citation statements)

References 8 publications

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“…During Mode 3, ZCS-off operation in the leading leg is accomplished by eliminating the primary current prior to removing the gate pulse of . The approximate time interval required to eliminate the primary current is given by (12) is the minimum when current is at its minimum, and the minimum is given by (13) where is the minimum current. The minimum current is usually given as magnetizing current of the main transformer.…”

Section: Consideration On Zvzcs Conditionmentioning

confidence: 99%

A zero-voltage and zero-current switching full bridge DC-DC converter with transformer isolation

Jeon

Cho

2001

IEEE Trans. Power Electron.

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A new primary-side-assisted zero-voltage and zerocurrent switching full bridge dc-dc converter with transformer isolation is proposed. The proposed dc-dc converter uses only one auxiliary transformer and two diodes to obtain ZCS for the leading leg. It has a simple and robust structure, and load current control capability even in short circuit conditions. Possibility of magnetic saturation due to asymmetricity of circuits or transient phenomena is greatly reduced, which is a very attractive feature in dc-dc converters with transformer isolation. The power rating of the auxiliary transformer is about 10% of that of the main transformer. Operation of a 12 KW prototype designed for welding application was verified by experiments.

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Section: Consideration On Zvzcs Conditionmentioning

confidence: 99%

A zero-voltage and zero-current switching full bridge DC-DC converter with transformer isolation

Jeon

Cho

2001

IEEE Trans. Power Electron.

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“…In a boost topology, the soft switching technique can be achieved by implementing different kinds of auxiliary commutation circuits and control . The concepts presented in the literature [8][9][10][11][12][13][14] are based on the use of passive auxiliary circuits. The implementation of soft switching in a suitable controlled interleaved circuit with output capacitances of transistors is shown in [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Publications [12,13] present auxiliary circuits based on L, C elements and diodes using resonant circuits. These circuits are characterized by a low number of elements and low complexity.…”

Section: Introductionmentioning

confidence: 99%

DC-DC Boost Converter with Reduced Switching Losses in Wide Range of Voltage Gain

et al. 2023

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This article presents the results of research on a new topology of a DC-DC converter in which switching losses are reduced by an auxiliary switching circuit (ASC). The proposed ASC can work as a passive or active circuit depending on the voltage gain of the converter. In both cases, this does not affect the operation of the main circuit and is analogous to a classic boost converter, which allows the use of the same control circuits and methods. The operation of the ASC is synchronized with the control of the main converter transistor. The reduction of transistor turn-off losses over a wide range of converter gain is a unique advantage of the proposed auxiliary circuit. This is evidenced by the comparison of the loss reduction with the classic boost converter and the reference converter with soft turn off. This article presents an in-depth analytical discussion related to the reduction of power losses, supported by simulation results, and verified experimentally.

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“…To achieve low cost, simple control circuit, and high reliability, passive lossless snubbers use passive components instead of an auxiliary active switch [9]- [16]. Generally, they can be divided into coupled inductor type and flying capacitor type.…”

Section: Introductionmentioning

confidence: 99%

A continuous current mode boost converter with modified flying capacitor lossless snubber

Cho

Park

Kim

et al. 2010

2010 IEEE Energy Conversion Congress and Exposition

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A continuous current mode boost converter with modified flying capacitor lossless snubber is proposed in this paper. The proposed converter charges the flying capacitor using a coupled inductor without the help of the reverse recovery current. As a result, it can reduce switching loss and guarantee the wide snubber reset ranges. The operation principle, characteristics, and experimental results are presented to verify the feasibility of the proposed converter.Index Terms-Boost converter, flying capacitor passive lossless snubber, coupled inductor, wide snubber reset ranges.978-1-4244-5287-3/10/$26.00 ©2010 IEEE

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A boost PWM soft-single-switched converter with low voltage and current stresses

Cited by 26 publications

References 8 publications

A zero-voltage and zero-current switching full bridge DC-DC converter with transformer isolation

A zero-voltage and zero-current switching full bridge DC-DC converter with transformer isolation

DC-DC Boost Converter with Reduced Switching Losses in Wide Range of Voltage Gain

A continuous current mode boost converter with modified flying capacitor lossless snubber

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