Analysis and design of a new choke less interleaved ZVS forward-flyback converter

Taheri, M.; Milimonfared, Jafar; Bayat, Hamid Reza; Riazmontazer, Hossein; Noroozi, A.

doi:10.1109/pedstc.2011.5742502

Cited by 4 publications

(2 citation statements)

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“…References [21][22][23][24] proposed a series of schemes to improve the performance of twoswitch forward converter. Among them, references [40][41][42] have the functions of improving duty cycle and soft switching. However, all of them used auxiliary switches, which will increase the complexity of the topology.…”

Section: Discussionmentioning

confidence: 99%

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An Interleaved Two Switch Soft-Switching Forward PWM Power Converter with Current Doubler Rectifier

Sayed

Abo‐Khalil

2022

Electronics

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Forward converters have been broadly used in the power supply industry due to their simplicity, worthy efficiency, and low cost. A novel prototype soft-switched zero-voltage and zero-current ZVZC PWM DC-DC power converter with low voltage/current stresses is introduced for telecommunication power feeding in this paper. A new two-switch interleaved forward converter circuit is introduced to minimalize current circulation with no supplementary auxiliary snubber circuits. This converter circuit includes some outstanding benefits such as reduced components, improved efficiency, high power density and economic circuit configurations for high power conditioning applications. The simple operation principle is demonstrated on the basis of steady-state analysis. Furthermore, the effective feasibility of the proposed circuit topology is evaluated and verified practically for a 500 W–100 kHz prototype breadboard. The operation principle and steady-state characteristics are demonstrated from a theoretical point of view. To verify the practical effectiveness of the proposed power converter, a 500 W–100 kHz prototype converter using ultrafast IGBTs is implemented for a distributed telecommunication energy plant. The studied soft-switching converter is evaluated in comparison with the previously-proposed PWM converters in terms of voltage, current stresses, and operating efficiency.

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Section: Discussionmentioning

confidence: 99%

“…In addition, the voltage load on the auxiliary switch in this circuit is the same as the voltage load on the main switch, resulting in higher capacitive turn-on loss. In [41], a zero current zero voltage transition (ZCZVT) forward converter is proposed. Like the converter in [7], this circuit has a complex topology with many components.…”

Section: Introductionmentioning

confidence: 99%