High step‐up soft‐switched dual‐boost coupled‐inductor‐based converter integrating multipurpose coupled inductors with capacitor‐diode stages

Sizkoohi, Hadi Moradi; Milimonfared, Jafar; Taheri, M.; Salehi, Sina

doi:10.1049/iet-pel.2014.0974

Cited by 51 publications

(14 citation statements)

References 21 publications

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“…Furthermore, high rating power switches have more considerable drain–source on‐resistance, which increases the conduction losses of the converter. To reduce the voltage stress on the switches, active [22, 23] or passive [24] clamping circuit is used to provide zero‐voltage switching (ZVS) and zero‐current switching (ZCS) operations for the switches. The use of voltage multiplier cells is considered to be one of the ideas for increasing the voltage gain in such converters [25, 26].…”

Section: Introductionmentioning

confidence: 99%

High step‐up DC–DC converter based on coupled‐inductor for renewable energy systems

Sadighi

Afjei

Salemnia

2020

IET power electron.

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The present study introduced a novel soft‐switched high step‐up DC–DC converter based on coupled inductors. The higher boost‐factor is achieved relying on previous topologies by adjusting the turns ratio of the coupled inductors. Thus, the proposed converter provides a higher voltage gain with lower duty ratios. Two active clamp circuits are employed to clamp the voltage spikes resulted from parasitic inductances. This active clamp circuit provides zero‐voltage switching turn‐on operations and zero‐current switching turn on/off operations for active switches and power diodes, respectively. In addition, the equivalent leakage inductance of the coupled inductors is placed in series with the power diodes, which significantly alleviates the reverse‐recovery problem of diodes. The other features of the proposed topology include fewer components, low cost, small input current ripple, and the low voltage stress on power switches. Low voltage stress allows choosing a lower voltage rating metal–oxide–semiconductor field‐effect transistor, which directly reduces the cost. The experimental results evaluated the performance of the proposed topology. For this purpose, a 48 V/380 V/500 W laboratory prototype was built and tested, and the results confirmed the performance of the presented converter.

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Section: Introductionmentioning

confidence: 99%

High step‐up DC–DC converter based on coupled‐inductor for renewable energy systems

Sadighi

Afjei

Salemnia

2020

IET power electron.

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“…One way to solve this problem is using interleaved structure. By employing winding‐cross‐coupled inductors (WCCIs) in interleaved non‐isolated converters, input current ripple and current stress of semiconductor devices are reduced and the voltage gain is increased [10–30]. In [19], an interleaved high step‐up converter with coupled inductors was introduced.…”

Section: Introductionmentioning

confidence: 99%

Interleaved non‐isolated DC–DC converter for ultra‐high step‐up applications

Fani

Farshidi

Adib

et al. 2020

IET power electron.

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This study presents a novel interleaved non‐isolated converter for ultra‐high step‐up applications. This circuit utilises coupled inductor and voltage‐lift techniques to achieve high voltage gain. In the proposed converter, the configuration of interleaved technique and winding‐cross‐coupled inductors not only reduces the input current ripple and current stress of semiconductor devices but also increases the voltage gain. Further, using voltage‐lift technique helps to reach a very high voltage conversion ratio with low turn ratio and proper duty cycle. Since the voltage stress of semiconductor devices is low enough, low on resistance switches and low voltage ultra‐fast recovery diodes are used. For this converter, high voltage gain, low conduction losses, low reverse recovery losses, high efficiency, low input current ripple, small volume and reduced cost are provided. Therefore, the proposed converter is a good choice for ultra‐high step‐up applications. The implemented 100 W laboratory prototype circuit with 18 V input voltage and unity turn ratio of coupled inductors reaches 360 V output voltage and 94.7% efficiency which validates the accuracy of theoretical analysis.

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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 [3–7].…”

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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High step‐up soft‐switched dual‐boost coupled‐inductor‐based converter integrating multipurpose coupled inductors with capacitor‐diode stages

Cited by 51 publications

References 21 publications

High step‐up DC–DC converter based on coupled‐inductor for renewable energy systems

High step‐up DC–DC converter based on coupled‐inductor for renewable energy systems

Interleaved non‐isolated DC–DC converter for ultra‐high step‐up applications

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

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