Zobrazeno 1 - 10
of 279
pro vyhledávání: '"Young Cheol Lim"'
Publikováno v:
IEEE Access, Vol 12, Pp 139804-139820 (2024)
Transformerless inverters (TIs) are widely employed in photovoltaic (PV) applications due to their cost-effectiveness, compact size, low weight, and high efficiency. However, the absence of electrical isolation can result in ground leakage current du
Externí odkaz:
https://doaj.org/article/8984af01827b411a9a60be90927c82e0
Publikováno v:
IEEE Access, Vol 11, Pp 81545-81562 (2023)
This paper proposes a new isolated high step-down DC–DC converter based on the phase-shift full-bridge converter. The proposed converter has some properties very suitable for high step-down applications including a high step-down ratio, low transfo
Externí odkaz:
https://doaj.org/article/34599647fd0b4d36b1746b0cd680a6e5
Publikováno v:
IEEE Access, Vol 9, Pp 164510-164519 (2021)
This article presents a three-phase two-level impedance-source inverter to decrease the magnitude of common-mode voltage and enhance the output voltage capability. Shoot-through states are inserted into zero states to ensure for boosting voltage and
Externí odkaz:
https://doaj.org/article/5a3445c19bbe4f1f85a9d8b342ade354
Autor:
Minh-Khai Nguyen, Truong-Duy Duong, Young-Cheol Lim, Joon-Ho Choi, D. Mahinda Vilathgamuwa, Geoffrey R. Walker
Publikováno v:
IEEE Access, Vol 8, Pp 53857-53867 (2020)
Low voltage stress on the impedance source network devices is the main reason for the advent of DC-linked type quasi-switched boost inverters (DqSBIs). However, the DqSBI has become less attractive due to its low voltage gain. This paper presents a n
Externí odkaz:
https://doaj.org/article/3f8b8ba468d147d4af3b3456a49d7ff6
Autor:
Tan-Tai Tran, Minh-Khai Nguyen, Van-Quang-Binh Ngo, Huu-Nhan Nguyen, Truong-Duy Duong, Young-Cheol Lim, Joon-Ho Choi
Publikováno v:
IEEE Access, Vol 8, Pp 166692-166702 (2020)
This paper introduces a new three-phase two-level inverter based on the switched-capacitor voltage multiplier. By adding a voltage multiplier network at the DC side of the traditional three-phase inverter topology, the DC-link voltage of the introduc
Externí odkaz:
https://doaj.org/article/ec27da85cf104d71ad8205703fef3277
Autor:
Truong-Duy Duong, Minh-Khai Nguyen, Tan-Tai Tran, Young-Cheol Lim, Joon-Ho Choi, Caisheng Wang
Publikováno v:
IEEE Access, Vol 8, Pp 160670-160683 (2020)
In a single-stage buck-boost quasi-switched boost inverter (qSBI), the shoot-through state insertion causes high amplitude common-mode voltage. Consequently, the qSBI becomes less attractive in transformerless photovoltaic (PV) systems. In this paper
Externí odkaz:
https://doaj.org/article/9efe548cf16b43858cc122e2a9b936fa
Autor:
Huu-Nhan Nguyen, Minh-Khai Nguyen, Van-Quang-Binh Ngo, Tan-Tai Tran, Joon-Ho Choi, Young-Cheol Lim
Publikováno v:
IEEE Access, Vol 8, Pp 175805-175814 (2020)
The space vector modulation (SVM) method using only rotating vectors is very effective to suppress the common-mode voltage (CMV) for matrix converters (MCs). However, the effect of the input filter on the input power factor (IPF) has not been fully i
Externí odkaz:
https://doaj.org/article/8f28e2c89ffe49ea83fdf0fe6b34843c
Publikováno v:
BMC Cancer, Vol 19, Iss 1, Pp 1-14 (2019)
Abstract Background Chemotherapy-induced alopecia has been well documented as a cause of distress to patients undergoing cancer treatment. Almost all traditional chemotherapeutic agents cause severe alopecia. Despite advances in the treatment of chem
Externí odkaz:
https://doaj.org/article/36ae6bdfcb3b40bea9c095ea06d393b2
Publikováno v:
IEEE Access, Vol 7, Pp 98618-98629 (2019)
In this paper, a modified three-phase two-level voltage source inverter is proposed. By combining the conventional three-phase H-bridge inverter with a switched-capacitor-voltage-doubler network, the DC-link voltage of the proposed inverter is double
Externí odkaz:
https://doaj.org/article/8a7db93fc042493aaff45955acdfed6f
Publikováno v:
Energies, Vol 15, Iss 9, p 3106 (2022)
In grid-connected photovoltaic (PV) systems, a transformer is needed to achieve the galvanic isolation and voltage ratio transformations. Nevertheless, these traditional configurations of transformers increase the weight, size, and cost of the invert
Externí odkaz:
https://doaj.org/article/9d202434bf6a4148b1b889a0740c1019