A High Power Interleaved Parallel Topology Full-Bridge LLC Converter for Off-Board Charger

An interleaved parallel LLC converter is proposed as a DC/DC converter for a digital off-board charger in accordance with the high output power requirements of modern electric vehicle chargers. The proposed converter utilizes a hybrid control strategy of pulse frequency modulation (PFM) and pulse wi...

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Autores principales: Jianbin Chen, Chengyu Yang, Shengzong Tang, Jianjun Zou
Formato: article
Lenguaje:EN
Publicado: IEEE 2021
Materias:
LLC
Acceso en línea:https://doaj.org/article/cf3b8f5429d24eb895af2fbd1fd5fbf9
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spelling oai:doaj.org-article:cf3b8f5429d24eb895af2fbd1fd5fbf92021-12-03T00:00:58ZA High Power Interleaved Parallel Topology Full-Bridge LLC Converter for Off-Board Charger2169-353610.1109/ACCESS.2021.3130051https://doaj.org/article/cf3b8f5429d24eb895af2fbd1fd5fbf92021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9626006/https://doaj.org/toc/2169-3536An interleaved parallel LLC converter is proposed as a DC/DC converter for a digital off-board charger in accordance with the high output power requirements of modern electric vehicle chargers. The proposed converter utilizes a hybrid control strategy of pulse frequency modulation (PFM) and pulse width modulation (PWM) that can greatly increase the adjustable output voltage range. As a result of these designs, a silky target voltage can be achieved. The proposed LLC converter has been rigorously analyzed and parametrically designed. To verify the design parameters of the proposed LLC converter, a laboratory prototype with an output voltage range of 40–110 V and a maximum output power of 20 kW was fabricated. The rated output voltage and rated output current are 80 V and 200 A, respectively, while its switching frequency range is 100–250 kHz and its resonant frequency is 153 kHz. This prototype exhibits incredible robustness and stability and achieves flexibility, stability, and sensitivity to automatically adapt to the target output voltage value.Jianbin ChenChengyu YangShengzong TangJianjun ZouIEEEarticleHigh powerLLCinterleaved parallel topologyoff-board chargerElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 157790-157799 (2021)
institution DOAJ
collection DOAJ
language EN
topic High power
LLC
interleaved parallel topology
off-board charger
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
spellingShingle High power
LLC
interleaved parallel topology
off-board charger
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Jianbin Chen
Chengyu Yang
Shengzong Tang
Jianjun Zou
A High Power Interleaved Parallel Topology Full-Bridge LLC Converter for Off-Board Charger
description An interleaved parallel LLC converter is proposed as a DC/DC converter for a digital off-board charger in accordance with the high output power requirements of modern electric vehicle chargers. The proposed converter utilizes a hybrid control strategy of pulse frequency modulation (PFM) and pulse width modulation (PWM) that can greatly increase the adjustable output voltage range. As a result of these designs, a silky target voltage can be achieved. The proposed LLC converter has been rigorously analyzed and parametrically designed. To verify the design parameters of the proposed LLC converter, a laboratory prototype with an output voltage range of 40–110 V and a maximum output power of 20 kW was fabricated. The rated output voltage and rated output current are 80 V and 200 A, respectively, while its switching frequency range is 100–250 kHz and its resonant frequency is 153 kHz. This prototype exhibits incredible robustness and stability and achieves flexibility, stability, and sensitivity to automatically adapt to the target output voltage value.
format article
author Jianbin Chen
Chengyu Yang
Shengzong Tang
Jianjun Zou
author_facet Jianbin Chen
Chengyu Yang
Shengzong Tang
Jianjun Zou
author_sort Jianbin Chen
title A High Power Interleaved Parallel Topology Full-Bridge LLC Converter for Off-Board Charger
title_short A High Power Interleaved Parallel Topology Full-Bridge LLC Converter for Off-Board Charger
title_full A High Power Interleaved Parallel Topology Full-Bridge LLC Converter for Off-Board Charger
title_fullStr A High Power Interleaved Parallel Topology Full-Bridge LLC Converter for Off-Board Charger
title_full_unstemmed A High Power Interleaved Parallel Topology Full-Bridge LLC Converter for Off-Board Charger
title_sort high power interleaved parallel topology full-bridge llc converter for off-board charger
publisher IEEE
publishDate 2021
url https://doaj.org/article/cf3b8f5429d24eb895af2fbd1fd5fbf9
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