Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme

Asymmetrical CLLC-type dc transformers (ACLLC-type DCTs) are becoming more and more popular in the renewable energy system, thanks to the bidirectional power transmission (PT), high power density, and low-cost sensorless open-loop control. Nevertheless, the resonant frequency is not constant due to...

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Main Authors: Huang, Jingjing, Zhang, Xin, Zhao, Bin
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/160923
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1609232022-08-08T01:49:34Z Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme Huang, Jingjing Zhang, Xin Zhao, Bin School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering DC Transformer Renewable Energy System, Asymmetrical CLLC-type dc transformers (ACLLC-type DCTs) are becoming more and more popular in the renewable energy system, thanks to the bidirectional power transmission (PT), high power density, and low-cost sensorless open-loop control. Nevertheless, the resonant frequency is not constant due to variations of the operation power and temperature in practice, which may make DCT lose its required voltage conversion gain and deteriorate the PT ability. This poses a challenge on the design of circuit parameters, especially when the open-loop scheme is usually recommended for the ACLLC-type DCT in the renewable energy system. Therefore, a semi-artificial intelligence (semi-AI)-based simplified parameter design approach is put forward in this paper for ACLLC-type DCT. It replaces all unknown parameters with two intermediate parameters through certain manipulations, and then utilizes a very simple computer-assisted procedure to optimally design the parameters of the ACLLC-type DCT. In addition, a detailed design example with a special planar transformer is presented via the aid of ANSYS Maxwell to achieve the desired resonant parameters of the ACLLC-type DCT. Finally, the proposed semi-AI-based method is experimentally demonstrated in a real renewable energy system prototype. Ministry of Education (MOE) Nanyang Technological University This work was supported in part by the Academic Research Fund Tier 1 Grant RG 85/18 and in part by the Nanyang Technological University Start-Up Grant for Prof. X. Zhang. 2022-08-08T01:49:34Z 2022-08-08T01:49:34Z 2019 Journal Article Huang, J., Zhang, X. & Zhao, B. (2019). Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme. IEEE Transactions On Power Electronics, 35(2), 1548-1562. https://dx.doi.org/10.1109/TPEL.2019.2922216 0885-8993 https://hdl.handle.net/10356/160923 10.1109/TPEL.2019.2922216 2-s2.0-85075603488 2 35 1548 1562 en RG 85/18 IEEE Transactions on Power Electronics © 2019 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
DC Transformer
Renewable Energy System,
spellingShingle Engineering::Electrical and electronic engineering
DC Transformer
Renewable Energy System,
Huang, Jingjing
Zhang, Xin
Zhao, Bin
Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme
description Asymmetrical CLLC-type dc transformers (ACLLC-type DCTs) are becoming more and more popular in the renewable energy system, thanks to the bidirectional power transmission (PT), high power density, and low-cost sensorless open-loop control. Nevertheless, the resonant frequency is not constant due to variations of the operation power and temperature in practice, which may make DCT lose its required voltage conversion gain and deteriorate the PT ability. This poses a challenge on the design of circuit parameters, especially when the open-loop scheme is usually recommended for the ACLLC-type DCT in the renewable energy system. Therefore, a semi-artificial intelligence (semi-AI)-based simplified parameter design approach is put forward in this paper for ACLLC-type DCT. It replaces all unknown parameters with two intermediate parameters through certain manipulations, and then utilizes a very simple computer-assisted procedure to optimally design the parameters of the ACLLC-type DCT. In addition, a detailed design example with a special planar transformer is presented via the aid of ANSYS Maxwell to achieve the desired resonant parameters of the ACLLC-type DCT. Finally, the proposed semi-AI-based method is experimentally demonstrated in a real renewable energy system prototype.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Huang, Jingjing
Zhang, Xin
Zhao, Bin
format Article
author Huang, Jingjing
Zhang, Xin
Zhao, Bin
author_sort Huang, Jingjing
title Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme
title_short Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme
title_full Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme
title_fullStr Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme
title_full_unstemmed Simplified resonant parameter design of the asymmetrical CLLC-type DC transformer in the renewable energy system via semi-artificial intelligent optimal scheme
title_sort simplified resonant parameter design of the asymmetrical cllc-type dc transformer in the renewable energy system via semi-artificial intelligent optimal scheme
publishDate 2022
url https://hdl.handle.net/10356/160923
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