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Design of a Novel Interleaved High Step-Up Converter for Renewable Energy Systems Applications
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Milad Niaz Azari *   , Tohid Nouri |
| Department of Electrical and Computer Engineering, University of Science and Technology of Mazandaran, Behshahr, Iran , miladniazazari@mazust.ac.ir |
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Abstract: (205 Views) |
| In this paper, a novel interleaved high step-up converter is proposed through coupled inductors (CI) and built-in transformer (BIT) voltage multiplier cells, which is suitable for renewable energy systems. The combination of these techniques gives a greater degree of freedom to increase voltage gain and reduce voltage stress in power switches without operating the converter in high duty cycles compared to other converters that only include BIT or CI. Therefore, semiconductors with low nominal voltage can be used to reduce conduction losses and cost. In addition, an active clamp scheme is used to ensure ZVS turn-on of power MOSFETs, and ZCS performance is provided by leakage inductances. In such a case, the switching losses are minimized and the reverse current recovery problem is reduced. Due to the proposed interleaved structure of the converter, not only the current stress is minimized, but also the input current ripple is limited, which leads to an increase in the lifetime of the input source. All these factors improve the efficiency and performance of the proposed converter. The performance principles and specifications of the proposed converter are analyzed in detail and the simulation results are presented in PSIM software. |
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| Keywords: Coupled inductor, Zero voltage switching, interleaved converter |
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Full-Text [PDF 955 kb]
(83 Downloads)
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Type of Study: Research |
Subject:
Renewable Energy Technologies
Received: 2023/10/9 | Accepted: 2024/03/12 | Published: 2024/02/29
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