Zobrazeno 1 - 10
of 622
pro vyhledávání: '"Chung-Yuen Won"'
Publikováno v:
Energies, Vol 17, Iss 6, p 1325 (2024)
This study proposes an unbalanced current compensation method based on a four-leg inverter using an artificial neural network (ANN) under unbalanced load conditions. Distribution systems exhibit rapid load variations, and conventional filter-based co
Externí odkaz:
https://doaj.org/article/18e4eb2ddb7e4afa81cf9a6d68db978c
Publikováno v:
Energies, Vol 17, Iss 6, p 1443 (2024)
In this article, a finite control set-model predictive control (FCS-MPC) with variable sampling time is proposed. A zero-voltage vector appears in the dead time between specific voltage vectors, resulting in an unintentionally large common-mode volta
Externí odkaz:
https://doaj.org/article/4e7caaca825349529b06362e486238b7
Publikováno v:
Energies, Vol 16, Iss 23, p 7763 (2023)
This study aims to analyze the zero-voltage-switching (ZVS) region of a Triple-Active-Bridge (TAB) converter with five degrees of freedom. A TAB converter is an isolated converter derived from a dual-active-bridge (DAB) converter and composed of thre
Externí odkaz:
https://doaj.org/article/1f0dc441aeb640488ba6a5771833d1ef
Publikováno v:
Energies, Vol 16, Iss 22, p 7552 (2023)
This paper proposes a hybrid power supply system for commercial drones. The proposed hybrid power supply system consists of a lithium polymer battery, a supercapacitor, and a power converter for charging the supercapacitor. In the proposed system, th
Externí odkaz:
https://doaj.org/article/3376446d29b64d81b58e3a55e6201e04
Autor:
Chang-Gyun An, Bong-Yeon Choi, Hoon Lee, Tae-Gyu Kim, Kyung-Min Kang, Mina Kim, Yoon-Seong Lee, Junsin Yi, Chung-Yuen Won
Publikováno v:
IEEE Access, Vol 10, Pp 18557-18569 (2022)
In this paper, we propose a novel switching modulation scheme for three-phase four-leg inverters that enables the separation of the fault points occurring in AC distribution networks. The proposed method is aimed at continuously supplying normal volt
Externí odkaz:
https://doaj.org/article/fd377d067da94e79b2270c2e31c522de
Autor:
Jin-Ho Park, Woong Jo, Eun-Tak Jeon, Sang-Hun Kim, Chang-Hee Lee, Jung-Hyo Lee, June-Hee Lee, Junsin Yi, Chung-Yuen Won
Publikováno v:
IEEE Access, Vol 10, Pp 33829-33843 (2022)
Most railroad cars employ a natural ventilation cooling method. For this reason, severe problems occur in the control devices for the railroad cars due to the heat generated by the high-power switching loss. Therefore, the traction inverter for the r
Externí odkaz:
https://doaj.org/article/e0d0dcccf43546c892a1ae3d01e63014
Publikováno v:
Energies, Vol 16, Iss 11, p 4372 (2023)
Recently, the establishment of technical standards for grid connection has gained interest in academia and industry. These standards have focused on the reactive power control function of the grid-connected inverter and maintenance of grid operation,
Externí odkaz:
https://doaj.org/article/895b694f1108434a91f168d6614583d6
Publikováno v:
Energies, Vol 16, Iss 4, p 1787 (2023)
In grid-connected operations, a microgrid can solve the problem of surplus power through regeneration; however, in the case of standalone operations, the only method to solve the surplus power problem is charging the energy storage system (ESS). Howe
Externí odkaz:
https://doaj.org/article/59f44f1539994f6aa490bc6d6db7713b
Publikováno v:
Energies, Vol 16, Iss 3, p 1172 (2023)
A virtual impedance-based flying start considering transient characteristics for permanent magnet synchronous machine drive systems is proposed. The conventional flying start based on virtual resistance (VR) assumes that the load of the system is res
Externí odkaz:
https://doaj.org/article/aa94c464e6ce43dcb76428dbddbcfbc7
Publikováno v:
Energies, Vol 15, Iss 21, p 8029 (2022)
In this paper, the method and a control algorithm for detecting resonant destruction of a resonant auxiliary power supply for railway vehicle are proposed. It is essential to reduce the weight of the electric equipment attached to the lower part of t
Externí odkaz:
https://doaj.org/article/2e337374a25343c6afdf8abaf8d12abf