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Stationary-frame power regulation for controlling grid-connected three-phase modular multilevel converter with low harmonic under unbalanced voltage.

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Akbari E.
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Operation of Grid-Connected DFIG Under Unbalanced Grid Voltage Condition

IEEE Transactions on Energy Conversion, 2009
Doubly fed induction generator (DFIG) still shares a large part in today's wind power market. It provides the benefits of variable speed operation cost-effectively, and can control its active and reactive power independently. Crowbar protection is often adopted to protect the rotor-side voltage source converter (VSC) from transient overcurrent during ...
Zhou, Y. (author), Bauer, P. (author), Ferreira, J.A. (author), Pierik, J. (author)   +3 more
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Study on grid feed forward strategy under Unbalanced Grid Condition

2019 14th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2019
In the case of unbalanced power grid, the disturbance of the power grid is introduced into the feed forward accurately, thus, the output feed-forward part of the inverter is in perfect agreement with the unbalanced power grid, in order to achieve good and effective control of the current of the converter in the dynamic change of the power grid.
Zheng-ce Cai, Cheng Zhou, Fang Xie
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Flexible Operation of Grid-Interactive Converters under Unbalanced Grid Conditions

Advanced Science and Technology Letters, 2015
The grid codes of power systems with high penetration of renewable sources impose stringent requirements on the operation of Distributed Renewable Energy Sources (DRES) under the unbalanced grid faults. A generalized power control strategy based on the symmetrical components is used in this paper to control the power delivery under unbalanced grid ...
M. Ali Fotouhi, Zita Vale, Rui Castro, Sónia F. Pinto, Fernando A. Silva   +4 more
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Impact of unbalanced grid conditions on PV systems

IEEE PES General Meeting, 2010
With more and more photovoltaic (PV) panels, energy storage devices and other small generators being put into service, it is necessary to integrate them into power systems. Grid integration provides a reliable means for customers to use renewable energy such as solar at its maximum and to use other sources as backup.
null Lingling Fan, null Zhixin Miao, Alexander Domijan   +2 more
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Grid Voltage Modulated Control of Grid-Connected Voltage Source Inverters under Unbalanced Grid Conditions

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
In this paper, an improved grid voltage modulated control (GVM) with power compensation is proposed for grid-connected voltage inverters when the grid voltage is unbalanced. The objective of the proposed control is to remove the power ripple and to improve current quality.
Li, Mingshen, Gui, Yonghao; id_orcid 0000-0002-5043-5534, Quintero, Juan Carlos Vasquez; id_orcid 0000-0001-6332-385X, Guerrero, Josep M.; id_orcid 0000-0001-5236-4592   +3 more
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Control of Grid Connected MMC Under Balanced & Unbalanced Grid Conditions

2018 2nd International Conference on Trends in Electronics and Informatics (ICOEI), 2018
With the advancement in power electronic systems the need for power electronic converters with increased reliability and efficiency of the conversion processes in medium and high power applications is ever growing. These requirements are ably fulfilled by the Modular Multilevel Converters (MMCs).
Mitali H Patel, Mukesh M Bhesaniya
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Circulating Current Suppression for MMC-HVDC under Unbalanced Grid Conditions

IEEE Transactions on Industry Applications, 2016
Modular multilevel converter (MMC) is believed the most competitive solution for high-voltage direct current (HVDC) transmission using voltage source converters. Circulating current suppressing strategies based on proportional resonant (PR) controllers are widely used in MMC. This kind of strategies can effectively eliminate all the circulating current
null Jinyu Wang, null Jun Liang, null Chengfu Wang, null Xiaoming Dong   +3 more
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Small-Signal Stability of MMC Grid-Tied System Under Two Typical Unbalanced Grid Conditions

IEEE Transactions on Industry Applications, 2021
The AC transmission network of Modular Multilevel Converters (MMC) usually adapts the overhead line, so the single-phase grounding faults of the AC side are rather general. At this time, the protection system will cut off the fault line for the first time, so there are two unbalance grid conditions (UGCs), i.e.
Jianhang Zhu, Jiabing Hu, Yingbiao Li, Shicong Ma, Tiezhu Wang   +4 more
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Analysis of wind driven grid connected induction generators under unbalanced grid conditions

IEEE Transactions on Energy Conversion, 1994
A wind driven induction generator feeding power to the grid has been analyzed under the abnormal condition of unbalanced grid voltages. Using the symmetrical component and double revolving field theory, appropriate equivalent circuits and model equations have been derived for the generating mode with suitable realistic modifications.
A.H. Ghorashi, S.S. Murthy, B.P. Singh, B. Singh   +3 more
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