A high step-up DC–DC soft-switched converter using coupled inductor and switched capacitor

Salehi, Navid; Mirtalaei, S. M. M.; Mirenayat, Sayyed Hosein

doi:10.1080/21681724.2017.1357195

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…Also, in order to provide soft switching conditions for a wide range of load and input changes, there is mainly a need to use variable control methods, which will complicate the control circuit. In the multi‐input converter with active clamp, the at zero voltage switching conditions (ZVS) are provided by adding only one auxiliary switch and a small number of passive auxiliary elements [39]. In these converters, contrary resonant converters, the voltage stress and current stress of the elements are within the minimum value range.…”

Section: Introductionmentioning

confidence: 99%

Analysis, design and implementation of a high step‐up multi‐port non‐isolated converter with coupled inductor and soft switching for photovoltaic applications

Taheri

Shahgholian

Mirtalaei

2022

IET Generation Trans & Dist

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In this paper, a new structure of a non‐isolated multi‐input converter is presented that is capable of generating high voltages to increase the efficiency of the converter, which uses a combination of a coupled inductor and a voltage multiplier cell. By combining these two methods, it is possible to use switches with low voltage stress and therefore low conductivity. This type of structure is suitable for photovoltaic (PV) applications. The proposed converter has two distinct phases for each input, which can be used to properly control the energy received from each source using two separate phases. The performance of the proposed converter depends on the charging or discharging mode of the energy storage system (ESS). To design a high step‐up non‐isolated multi‐input converter, first the structure and performance of the proposed converter are thoroughly investigated. The exact design method is presented for the correct operation of the converter and the simulation results for different modes of the converter operation are shown. Finally, in order to confirm the accuracy of the simulation results of the proposed converter, a laboratory sample of the proposed converter to supply a 400 W–400 V load is implemented and a comparison between the theoretical and practical results is performed.

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Section: Introductionmentioning

confidence: 99%

Analysis, design and implementation of a high step‐up multi‐port non‐isolated converter with coupled inductor and soft switching for photovoltaic applications

Taheri

Shahgholian

Mirtalaei

2022

IET Generation Trans & Dist

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show abstract

“…Although by increasing the leakage inductance, the reverse-recovery problem of diodes can be reduced effectively due to inserting coupled inductors, the leakage energy induces high voltage spikes across the semiconductor switches. One approach in order to solve this problem is employing a switched-capacitor technique as an active clamp circuit in order to recycle the leakage energy [6]. To reduce the topology complexity and cost, passive clamps are also considered as a possible solution.…”

Section: Introductionmentioning

confidence: 99%

Modified Cascaded Z-Source High Step-Up Boost Converter

2020

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To improve the voltage gain of step-up converters, the cascaded technique is considered as a possible solution in this paper. By considering the concept of cascading two Z-source networks in a conventional boost converter, the proposed topology takes the advantages of both impedance source and cascaded converters. By applying some modifications, the proposed converter provides high voltage gain while the voltage stress of the switch and diodes is still low. Moreover, the low input current ripple of the converter makes it absolutely appropriate for photovoltaic applications in expanding the lifetime of PV panels. After analyzing the operation principles of the proposed converter, we present the simulation and experimental results of a 100 W prototype to verify the proposed converter performance.

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“…Although by increasing the leakage inductance, due to inserting coupled-inductors, the reverse-recovery problem of diodes can reduce effectively, the leakage energy induces high voltage spikes across the semiconductor switches. One approach in order to solve this problem is employing switched-capacitor technique as an active clamp circuit in order to recycle the leakage energy [6]. To reduce the topology complexity and cost, passive clamps are also considered as a possible solution.…”

Section: Introductionmentioning

confidence: 99%

Modified Cascaded Z-Source High Step-Up Boost Converter

Salehi¹,

García²,

Quesada³

2020

Preprint

Self Cite

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To improve the voltage gain of step-up converters, cascaded technique is considered as a possible solution in this paper. By considering the concept of cascading two Z-source networks in a conventional boost converter, the converter takes the advantages of both impedance source and cascaded converters. However, by applying some modifications, the proposed converter provides high voltage gain while the voltage stress of switch and diodes are still low. Moreover, the low input current ripple of the converter makes it absolutely appropriate for photovoltaic applications in order to expand the lifetime of PV panels. After analyzing the operation principles of the proposed converter, simulation and experimental results of a 100W prototype are presented to verify the proposed converter performance.

show abstract

A high step-up DC–DC soft-switched converter using coupled inductor and switched capacitor

Cited by 6 publications

References 16 publications

Analysis, design and implementation of a high step‐up multi‐port non‐isolated converter with coupled inductor and soft switching for photovoltaic applications

Analysis, design and implementation of a high step‐up multi‐port non‐isolated converter with coupled inductor and soft switching for photovoltaic applications

Modified Cascaded Z-Source High Step-Up Boost Converter

Modified Cascaded Z-Source High Step-Up Boost Converter

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