High Step-Up Interleaved ZVT Converter With Low Voltage Stress and Automatic Current Sharing

Akhlaghi, Baharak; Molavi, Navid; Fekri, Mahmoud; Farzanehfard, Hosein

doi:10.1109/tie.2017.2723861

Cited by 62 publications

(64 citation statements)

References 32 publications

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“…In order to demonstrate the advantages of the proposed converter, a parametric comparison between the proposed converter and the converters of [19,22] is shown in Table 2. As can be observed, the proposed converter gain is the highest and the voltage stress of the main and the auxiliary switches are the lowest among the converters for a wide range of n. The gain comparison between the proposed converter and the converters of [19,22] is shown in Fig. 9.…”

Section: Resultsmentioning

confidence: 99%

“…Fig. 9 Gain comparison between the proposed converter, and the converters of [19,22] The current and voltage waveforms of the converter main diodes D 1 , D 2 are shown in Fig. 10e.…”

Section: Resultsmentioning

confidence: 99%

“…This paper presents an integrated soft switching cell and clamp circuit for interleaved converters and is applied to an interleaved Fig. 12 Efficiency comparison between the proposed converter and the converters of [19,22] high step-up converter with winding cross-coupled inductors and series capacitors. Soft switching condition for all semiconductor devices of the interleaved converter is achieved with a single switch single auxiliary circuit.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Integrated soft switching cell and clamp circuit for interleaved high‐step‐up converters

Packnezhad¹,

Farzanehfard²,

Adib³

2019

IET Power Electronics

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An integrated soft switching cell and clamp circuit suitable for interleaved high-step-up converters with coupled inductors is proposed in this study. This cell is applied to an interleaved boost converter with winding cross-coupled inductors and series capacitors. The main contribution of the study is presenting a simple auxiliary circuit which provides soft switching condition and acts as a clamp circuit. In addition, only one auxiliary circuit is utilised for both phases of the proposed converter in order to absorb the energy of the leakage inductances and achieve fully soft switching condition. To verify the theoretical analysis and the operation of the proposed converter, a 300 W prototype converter with 24-380 V conversion ratio is implemented.

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Section: Resultsmentioning

confidence: 99%

“…Fig. 9 Gain comparison between the proposed converter, and the converters of [19,22] The current and voltage waveforms of the converter main diodes D 1 , D 2 are shown in Fig. 10e.…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Integrated soft switching cell and clamp circuit for interleaved high‐step‐up converters

Packnezhad¹,

Farzanehfard²,

Adib³

2019

IET Power Electronics

Self Cite

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“…As a result, the transient response is improved and the passive components size and weight are reduced [1,2]. Therefore, interleaved topologies are very attractive in high power applications like power factor correctors (PFCs), voltage regulators, and renewable energy systems [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Family of zero voltage transition interleaved converters with low voltage and current stress

Akhlaghi

Esteki

Farzanehfard

2018

IET Power Electronics

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This study presents a family of zero voltage transition (ZVT) interleaved converters which utilises a simple auxiliary cell. The ZVT cell has only a single auxiliary switch for multi-phase interleaved converters. In the proposed converters, all semiconductor devices operate under fully soft switching condition. The main switches turn on and turn off under zero voltage switching (ZVS) condition while the auxiliary switch turns on and turns off under zero current switching (ZCS) condition. Besides, all the converter main and auxiliary diodes turn off under ZCS condition which alleviates the diodes reverse recovery problem. The ZVT cell imposes no extra current and voltage stresses on the semiconductor devices. The effectiveness of the proposed method is evaluated by a 100 kHz, 200 W two-phase interleaved boost converter and the theoretical analysis and design procedure are discussed in detail. Furthermore, the results of an implemented laboratory prototype are provided which are consistent with the theoretical analysis.

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“…Classical high set-up converters operate with hard switching (HS). Because of HS, various problems occur in high set-up converters at high frequencies [5][6][7]. These problems are the switching power losses, electromagnetic interference (EMI), high reverse recovery losses, etc.…”

Section: Introductionmentioning

confidence: 99%

Design, analysis and application of high set-up ZVT DC–DC converter with direct power transfer

Şahin

Tınğ

2018

Sādhanā

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In this paper, a new snubber cell for soft switched high setup DC-DC converters is introduced. The main switch is turned on by zero-voltage transition and turned off by zero-voltage switching (ZVS). The main diode is turned on by ZVS and turned off by zero-current switching. Besides, all auxiliary semiconductor devices are soft switched. Any semiconductor device does not expose the additional current or voltage stress. The new snubber transfers some of the circulation energy to the output side when it ensures soft switching for main semiconductor devices. Thus, the current stress of auxiliary switch is significantly reduced. Besides, the total efficiency of converter is high due to the direct power transfer feature of new converter. A theoretical and mathematical analysis of the new converter is presented, and also verified with experimental setup at 500 W and 100 kHz. Finally, the overall efficiency of new converter is 97.4% at nominal output power.

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High Step-Up Interleaved ZVT Converter With Low Voltage Stress and Automatic Current Sharing

Cited by 62 publications

References 32 publications

Integrated soft switching cell and clamp circuit for interleaved high‐step‐up converters

Integrated soft switching cell and clamp circuit for interleaved high‐step‐up converters

Family of zero voltage transition interleaved converters with low voltage and current stress

Design, analysis and application of high set-up ZVT DC–DC converter with direct power transfer

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