A new interleaved ultra‐large gain converter for sustainable energy systems

Abstract By inserting the secondary windings of the coupled inductors in series with the primary of the built‐in transformer at the middle branch, a new concept is introduced for achieving ultra large voltage gain. The secondary and tertiary windings of the built‐in transformer are inserted in the v...

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Main Authors: Tohid Nouri, Mahdi Shaneh
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:IET Power Electronics
Subjects:
Online Access:https://doi.org/10.1049/pel2.12014
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author Tohid Nouri
Mahdi Shaneh
author_facet Tohid Nouri
Mahdi Shaneh
author_sort Tohid Nouri
collection DOAJ
description Abstract By inserting the secondary windings of the coupled inductors in series with the primary of the built‐in transformer at the middle branch, a new concept is introduced for achieving ultra large voltage gain. The secondary and tertiary windings of the built‐in transformer are inserted in the voltage multiplier cell. This configuration not only extends the voltage gain and minimises the voltage stress across power MOSFETs, but also gives a more flexibility to increase the voltage gain by the turns ratios of the built‐in transformer and coupled inductors. Hence, high duty cycle is avoided and low voltage switches can be adopted which reduces the conduction losses. Also, the regenerative diode in each of the phases is connected to the other phase to improve equal current sharing performance. The energy of the leakage inductances is recycled by passive clamps and the high voltage spikes are avoided. Meanwhile, due to the leakage inductances of the magnetic means, the zero current switching of semiconductor devices is provided and the reverse recovery problem is alleviated. Finally, a 600 W prototype with 28–400 V voltage conversion and 97% conversion efficiency is built to demonstrate the performance of the converter.
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spelling doaj.art-9f3bbfc6643d4fedbe8e7f5f6f09effc2023-02-27T11:01:16ZengWileyIET Power Electronics1755-45351755-45432021-01-011419010510.1049/pel2.12014A new interleaved ultra‐large gain converter for sustainable energy systemsTohid Nouri0Mahdi Shaneh1Department of Electrical Engineering Sari Branch Islamic Azad University Sari IranDepartment of Electrical Engineering Najafabad Branch Islamic Azad University Najafabad IranAbstract By inserting the secondary windings of the coupled inductors in series with the primary of the built‐in transformer at the middle branch, a new concept is introduced for achieving ultra large voltage gain. The secondary and tertiary windings of the built‐in transformer are inserted in the voltage multiplier cell. This configuration not only extends the voltage gain and minimises the voltage stress across power MOSFETs, but also gives a more flexibility to increase the voltage gain by the turns ratios of the built‐in transformer and coupled inductors. Hence, high duty cycle is avoided and low voltage switches can be adopted which reduces the conduction losses. Also, the regenerative diode in each of the phases is connected to the other phase to improve equal current sharing performance. The energy of the leakage inductances is recycled by passive clamps and the high voltage spikes are avoided. Meanwhile, due to the leakage inductances of the magnetic means, the zero current switching of semiconductor devices is provided and the reverse recovery problem is alleviated. Finally, a 600 W prototype with 28–400 V voltage conversion and 97% conversion efficiency is built to demonstrate the performance of the converter.https://doi.org/10.1049/pel2.12014Power electronics, supply and supervisory circuitsPower semiconductor devicesInsulated gate field effect transistorsInductors and transformersDC‐DC power convertorsPower convertors and power supplies to apparatus
spellingShingle Tohid Nouri
Mahdi Shaneh
A new interleaved ultra‐large gain converter for sustainable energy systems
IET Power Electronics
Power electronics, supply and supervisory circuits
Power semiconductor devices
Insulated gate field effect transistors
Inductors and transformers
DC‐DC power convertors
Power convertors and power supplies to apparatus
title A new interleaved ultra‐large gain converter for sustainable energy systems
title_full A new interleaved ultra‐large gain converter for sustainable energy systems
title_fullStr A new interleaved ultra‐large gain converter for sustainable energy systems
title_full_unstemmed A new interleaved ultra‐large gain converter for sustainable energy systems
title_short A new interleaved ultra‐large gain converter for sustainable energy systems
title_sort new interleaved ultra large gain converter for sustainable energy systems
topic Power electronics, supply and supervisory circuits
Power semiconductor devices
Insulated gate field effect transistors
Inductors and transformers
DC‐DC power convertors
Power convertors and power supplies to apparatus
url https://doi.org/10.1049/pel2.12014
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