Results 11 to 20 of about 336,016 (296)
Frontiers in Energy Research, 2022 In the contemporary distribution network, unbalanced and harmonic distortions have been considered some major power quality problems, which have escalated especially due to the high penetration of unbalanced and nonlinear loads. This study first analyzes
Wenli Wei +4 more
doaj +1 more source
IEEE Access, 2020 To handle the unbalanced vibration caused by uneven rotor mass distribution in a bearingless induction motor (BIM), a control strategy that integrates unbalanced feed-forward compensation and current compensation is presented.
Huimin Zhu +4 more
doaj +1 more source
IET Generation, Transmission & Distribution, 2021 This paper proposes an effective fault management scheme for medium‐voltage direct current (MVDC) networks, which includes a virtual‐impedance‐based fault current limiter (VI‐FCL) on the DC side and a positive‐negative‐sequence (PNS) control scheme on ...
Dongsen Sun +3 more
doaj +1 more source
Improved control of virtual synchronous generator under unbalance of grid voltage
Energy Reports, 2023 Asymmetric faults in the power grid will lead to unbalanced grid voltage. When the traditional VSG control operates under unbalanced grid voltage, the output current will be unbalanced, resulting in output power oscillation.
Chunxue Wen +3 more
doaj +1 more source
Comprehensive Power Losses Model for Electronic Power Transformer
IEEE Access, 2018 The electronic power transformer (EPT) has higher power losses than the conventional transformer. However, the EPT can correct the power factor, compensate the unbalanced current, and reduce the line power losses in the distribution network.
Quanyou Yue +6 more
doaj +1 more source
Energy Reports, 2023 Unbalanced issues and power quality problems can be handled using shunt active power filters (APFs). Under weak grid conditions and unbalanced grid impedance, the unbalanced three-phase load leads to unbalanced grid currents and point-of-common-coupling ...
Mohammad Alathamneh +2 more
doaj +1 more source
Demonstration of sustained and useful converter responses during balanced and unbalanced faults in microgrids [PDF]
, 2012 In large power grids where converter penetration is presently low and the network impedance is predominantly reactive, the required response from converters during faults is presently specified by phrases such as “maximum reactive output”.
Burt, Graeme +4 more
core +1 more source
Zhongguo dianli, 2019 Complex electromagnetic field in converter station poses a serious interference to the field test of unbalanced current of high voltage capacitor bank, and the unbalanced current is too small to be accurately measured directly during the test. This paper
Peng WU, Yuan ZHANG, Lei SHI
doaj +1 more source
Control of DFIG based wind generation systems under unbalanced network supply [PDF]
, 2007 This paper develops a dynamic model and control scheme for DFIG systems to improve the performance and stability under unbalanced grid conditions. A dynamic DFIG model containing the positive and negative sequence components is presented using stator ...
Wang, Yi, Xu, L.
core +1 more source
Unbalanced current-based tariff
CIRED - Open Access Proceedings Journal, 2017 The voltage and current unbalances are serious power quality problems with interaction on each other and mainly affecting low-voltage electricity distribution three-phase systems. In a three-phase system, the current unbalance is due to load unbalance, while it is considered as the main cause of voltage unbalance.
Hossein Arghavani, Mitra Peyravi
openaire +1 more source