Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Lennart Harnefors"'
Autor:
Fangzhou Zhao, Tianhua Zhu, Lennart Harnefors, Bo Fan, Heng Wu, Zichao Zhou, Yin Sun, Xiongfei Wang
Publikováno v:
IEEE Open Journal of Power Electronics, Vol 5, Pp 186-200 (2024)
This paper derives closed-form solutions for grid-forming converters with power synchronization control (PSC) by subtly simplifying and factorizing the complex closed-loop models. The solutions can offer clear analytical insights into control-loop in
Externí odkaz:
https://doaj.org/article/7e9424ed32854564a2ac6cd253f8002e
Autor:
Xiongfei Wang, Mads Graungaard Taul, Heng Wu, Yicheng Liao, Frede Blaabjerg, Lennart Harnefors
Publikováno v:
IEEE Open Journal of Industry Applications, Vol 1, Pp 115-134 (2020)
This paper presents an overview of the synchronization stability of converter-based resources under a wide range of grid conditions. The general grid-synchronization principles for grid-following and grid-forming modes are reviewed first. Then, the s
Externí odkaz:
https://doaj.org/article/cb7e3d5ae2534ae0b9fe2231aab43098
Autor:
Mario Schweizer, Stefan Almer, Sami Pettersson, Arvid Merkert, Vivien Bergemann, Lennart Harnefors
Publikováno v:
IEEE Transactions on Power Electronics. 37:13091-13106
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a20ce301303cb5c7c7c727ab79e509c
https://doi.org/10.1109/tpel.2022.3177938
https://doi.org/10.1109/tpel.2022.3177938
Publikováno v:
Zhao, F, Wang, X, Zhou, Z, Sun, Y, Harnefors, L & Zhu, T 2023, ' Robust Grid-Forming Control With Active Susceptance ', IEEE Transactions on Power Electronics, vol. 38, no. 3, pp. 2872-2877 . https://doi.org/10.1109/TPEL.2022.3223511
This letter proposes a grid-forming control scheme that is robust against a wide range of short-circuit ratio (SCR) of the ac grid. The approach modifies the traditional power synchronization control by adding an active susceptance loop, which enhanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2577b79f9bf5ad29cf9d32a0d4f15ba0
https://vbn.aau.dk/da/publications/1b8fbad9-d91e-4846-958e-ef060a4c1f5a
https://vbn.aau.dk/da/publications/1b8fbad9-d91e-4846-958e-ef060a4c1f5a
This paper deals with current-regulated V/Hz control for induction motors. The analyzed control method incorporates an outer voltage control loop and an inner current control loop. Consequently, the stator current can be limited and unnecessary overc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46a11bb790e8348bc608051d2d8fcf1c
https://aaltodoc.aalto.fi/handle/123456789/117461
https://aaltodoc.aalto.fi/handle/123456789/117461
Autor:
Lauri Tiitinen, Marko Hinkkanen, Jarno Kukkola, Mikko Routimo, Gianmario Pellegrino, Lennart Harnefors
This paper proposes an observer-based volts-per-hertz (V/Hz) control method for synchronous motors. The method is applicable to any synchronous motor type, from permanent-magnet (PM) motors to synchronous reluctance motors (SyRMs). The method consist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19e8531367b0f73390050b8045f006bb
https://aaltodoc.aalto.fi/handle/123456789/118037
https://aaltodoc.aalto.fi/handle/123456789/118037
Publikováno v:
2022 IEEE Energy Conversion Congress and Exposition (ECCE).
This paper proposes an observer-based volts-per-hertz (V/Hz) control method for induction motors. The proposed method consists of a state-feedback control law and a flux observer, both of which are designed to be inherently sensorless. The gains can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe87d9c53247162f829af96098623a49
https://doi.org/10.1109/ecce50734.2022.9948057
https://doi.org/10.1109/ecce50734.2022.9948057
Autor:
Noriko Kawakami, Suryanarayana Doolla, Dragan Maksimovic, Tsorng-Juu Peter Liang, Yan-Fei Liu, Jih-Sheng Jason Lai, Joseph Olorunfemi Ojo, Lennart Harnefors, Yen-Shin Lai, Shu Yuen Ron Hui, Marta Molinas
Publikováno v:
IEEE Journal of Emerging and Selected Topics in Power Electronics. 9:3-6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbcacb59bafdfd5c0f61d97c2ade77d2
https://doi.org/10.1109/jestpe.2021.3049696
https://doi.org/10.1109/jestpe.2021.3049696
Autor:
Panagiotis Bakas, Yuhei Okazaki, Hans-Peter Nee, Staffan Norrga, Kalle Ilves, Lennart Harnefors
Publikováno v:
IEEE Transactions on Power Electronics. 35:12909-12928
This article studies a new hybrid converter that utilizes thyristors and full-bridge (FB) arms for achieving high-power capability with reduced semiconductor power rating compared to the FB modular multilevel converter. The study covers the theoretic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b110f507cee0e90c006a7dda82683aa
https://doi.org/10.1109/tpel.2020.2996568
https://doi.org/10.1109/tpel.2020.2996568
Publikováno v:
IEEE Transactions on Power Electronics. 35:8878-8881
In this letter, an enhancement of power-synchronization control is proposed, whereby pole-zero cancellation in the closed-loop system is achieved. An effect thereof is that step-response ringing and overshoot are eliminated. For strong grids, the clo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c30f03d6f83b6d051e3dead0ce98a20b
https://doi.org/10.1109/tpel.2020.2970991
https://doi.org/10.1109/tpel.2020.2970991