Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Jahangir Afsharian"'
Publikováno v:
2023 IEEE Applied Power Electronics Conference and Exposition (APEC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10c169e287de6192798e5014c92b8ec7
https://doi.org/10.1109/apec43580.2023.10131596
https://doi.org/10.1109/apec43580.2023.10131596
Autor:
Jahangir Afsharian
With the fast development of information technology (IT) industry, the demand and market volume for off-line power supplies keep increasing, especially those for telecommunication, computer servers and data centers. As the capital expenditure was mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2636ad7874fada5c3d3a79ba7b507982
https://doi.org/10.32920/ryerson.14649273
https://doi.org/10.32920/ryerson.14649273
Autor:
Zhihua Yang, Yang Chen, Yan-Fei Liu, Jahangir Afsharian, Zhiyuan Hu, Hongliang Wang, Xiaodong Liu
Publikováno v:
IEEE Transactions on Power Electronics. 34:2385-2396
In data center and telecommunication power supplies, the front-end dc–dc stage is required to operate with a wide input voltage range to provide hold-up time when ac input fails. Conventional LLC converter serving as the dc–dc stage is not suitab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ee2f4654827ac065e833d022fba685
https://doi.org/10.1109/tpel.2018.2842022
https://doi.org/10.1109/tpel.2018.2842022
Autor:
Jahangir Afsharian
This thesis is devoted to the development of a novel parallel isolated power supply (PIPS) for the gate driver of integrated Gate Commutated Thyristors (GCT). The proposed PIPS is essentially a special high frequency soft switched DC/DC converter, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dff125f9e716842caca879a8d1e60da
https://doi.org/10.32920/ryerson.14656080
https://doi.org/10.32920/ryerson.14656080
Publikováno v:
2020 IEEE Applied Power Electronics Conference and Exposition (APEC).
This paper establishes mathematical models to analyze uneven current sharing behaviors among paralleled secondary PCB windings and eddy current losses in stacked transformers proposed for high-efficiency LLC resonant converters. Decomposition of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95cf238ee364442fd12bac78129b55c3
https://doi.org/10.1109/apec39645.2020.9124444
https://doi.org/10.1109/apec39645.2020.9124444
Publikováno v:
IEEE Transactions on Power Electronics. 33:9854-9865
In this paper, a new pulse width modulation (PWM) scheme and commutation method is presented for one phase loss operation of three-phase isolated buck matrix-type rectifier. With the proposed PWM scheme, the maximum allowable voltage gain for one pha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af8531d4d38837b9a972b86ce7a44dd1
https://doi.org/10.1109/tpel.2018.2789905
https://doi.org/10.1109/tpel.2018.2789905
Publikováno v:
IEEE Transactions on Power Electronics. 33:110-124
This paper first starts with reviewing several commonly practiced PWM schemes for the three-phase isolated buck matrix-type rectifier. Then, an optimal six-segment PWM scheme (“Type A”) is proposed. The analysis shows “Type A” PWM scheme has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e33a17561c0bf9f46d434c5b0e2b522c
https://doi.org/10.1109/tpel.2017.2661242
https://doi.org/10.1109/tpel.2017.2661242
Autor:
Yang Chen, Zhihua Alex Yang, Yajie Qiu, Hongliang Wang, Laili Wang, Peng Fang, Yan Zhang, Jahangir Afsharian, Yan-Fei Liu
Publikováno v:
IEEE Transactions on Power Electronics. 33:370-387
In high-power applications, parallel operation is required to improve both efficiency and reliability. In an LLC converter, it is difficult to achieve parallel operation due to the gain sensitivity to component tolerance. This paper proposes a new st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8074c8b98cd70a305aff4f3b53d5d16
https://doi.org/10.1109/tpel.2017.2661066
https://doi.org/10.1109/tpel.2017.2661066
Publikováno v:
IEEE Transactions on Power Electronics. 32:6994-7010
In this paper, a new common inductor current sharing method is proposed for a multiphase LLC resonant converter for high-power applications. Automatic current sharing is achieved by using a common resonant inductor connecting the resonant inductors i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e52804b0bb809c463a1a0c0cdb3e582
https://doi.org/10.1109/tpel.2016.2626312
https://doi.org/10.1109/tpel.2016.2626312
Publikováno v:
IEEE Transactions on Power Electronics. 32:4291-4306
This paper proposed a new half-bridge (HB) LLC resonant converter family with pulse-width modulated (PWM) auxiliary switch (sLLC converter) for hold-up mode operation. The proposed sLLC converters could operate with synchronous rectifier, which is su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7852fa1690cf326c820142144c6d8ea2
https://doi.org/10.1109/tpel.2016.2604368
https://doi.org/10.1109/tpel.2016.2604368