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pro vyhledávání: '"Youn-Ok Choi"'
Autor:
Youn-Ok Choi, Khai M. Nguyen
Publikováno v:
Energies, Vol 17, Iss 23, p 6191 (2024)
Nowadays, single-phase, single-stage, buck-boost power inverters are mostly considered to be used for renewable energy source applications due to their wide range of capabilities. This article introduces a novel, single-phase, single-stage, buck-boos
Externí odkaz:
https://doaj.org/article/f9b180ff7b6f4b8580263682733e580e
Publikováno v:
IEEE Access, Vol 11, Pp 58333-58348 (2023)
The combination of conventional front-end DC-DC converter and H-bridge inverter has been proposed with common-ground (CG) characteristic and voltage booting capability. However, it has drawback of low modulation index utilization which causes high co
Externí odkaz:
https://doaj.org/article/348c9badf2ea416c9e928586d431f9fb
Publikováno v:
IEEE Access, Vol 10, Pp 10149-10159 (2022)
In recent years, many pulse width modulation techniques have been explored for three-level impedance-source inverters. Among them, a space vector modulation (SVM) technique using upper/lower shoot-through (UST/LST) insertion provides high voltage gai
Externí odkaz:
https://doaj.org/article/af6f058c403647e0bd33cfab99595dc6
Publikováno v:
Energies, Vol 12, Iss 3, p 394 (2019)
A novel single-phase nine-level boost inverter is proposed in this paper. The proposed inverter has an output voltage which is higher than the input voltage by switching capacitors in series and in parallel. The maximum output voltage of the proposed
Externí odkaz:
https://doaj.org/article/ea04ba1cbcbc481baea9070de5afcbe5
Publikováno v:
Energies, Vol 11, Iss 4, p 987 (2018)
A non-isolated high boost DC-DC converter topology based on a switched-capacitor (SC) structure is introduced in this paper. By controlling the duty cycle in each period, the voltage gain of the converter is adjusted. The main features of the propose
Externí odkaz:
https://doaj.org/article/9e52ad1a680d445fa2e2891c2166d30e
Autor:
Youn-Ok Choi, Jaehong Kim
Publikováno v:
Energies, Vol 10, Iss 7, p 904 (2017)
The droop method is the most favorable alternative in microgrid implementations for autonomous control of grid-forming inverter-based distributed generators (DGs) connected in parallel. However, the dynamic characteristic of the conventional droop me
Externí odkaz:
https://doaj.org/article/7c15bc21ac114f01883c41ed5f88201a
Autor:
Minh-Khai Nguyen, Youn-Ok Choi
Publikováno v:
Energies, Vol 10, Iss 4, p 553 (2017)
The maximum boost control method for a single-phase switched-boost inverter (SBI) and single-phase Z-source inverter (ZSI) is proposed in this paper. In the proposed method, the low frequency voltage is added to the constant voltage for generating th
Externí odkaz:
https://doaj.org/article/3e9d05b2666144c6a3e1edad77cb42d9
Autor:
Minh-Khai Nguyen, Youn-Ok Choi
Publikováno v:
Electronics, Vol 10, Iss 2968, p 2968 (2021)
Electronics; Volume 10; Issue 23; Pages: 2968
Electronics; Volume 10; Issue 23; Pages: 2968
In Z-source topologies, a high-amplitude common-mode voltage can occur when shoot-through states are inserted. In this study, a new space vector pulse-width modulation for an active quasi-Z-source topology is proposed to operate at a high modulation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0eada471003ac6c75109ea3679073344
https://www.mdpi.com/2079-9292/10/23/2968
https://www.mdpi.com/2079-9292/10/23/2968
Publikováno v:
2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC).
Interior permanent magnet synchronous motor (IPMSM) salient pole structure drives benefits in utilizing in higher-performance industrial applications. For high-performance application, the control of IPMSM required precise information of rotor angula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2964836b278ddc69393b15ca56d5c774
https://doi.org/10.1109/pemc48073.2021.9432536
https://doi.org/10.1109/pemc48073.2021.9432536
Autor:
Youn-Ok Choi, Minh-Khai Nguyen
Publikováno v:
IEEE Transactions on Power Electronics. 33:4037-4044
The simple boost control (SBC) method is usually used to control the shoot-through state in a single-phase single-stage quasi-switched boost inverter (qSBI). This paper proposes a new pulse-width modulation (PWM) control scheme to improve the modulat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26f5dfb8055e3fb38bdab0b5a0333947
https://doi.org/10.1109/tpel.2017.2717487
https://doi.org/10.1109/tpel.2017.2717487