Results 21 to 30 of about 57,605 (331)

Stochastic Linear Programming for Optimal Planning of Battery Storage Systems Under Unbalanced-uncertain Conditions

open access: yesJournal of Modern Power Systems and Clean Energy, 2020
Battery energy storage system (BESS) has already been studied to deal with uncertain parameters of the electrical systems such as loads and renewable energies.
Reza Hemmati, Hasan Mehrjerdi
doaj   +1 more source

Control of DFIG based wind generation systems under unbalanced network supply [PDF]

open access: yes, 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

Improved DPC Strategy of Grid-connected Inverters under Unbalanced and Harmonic Grid Conditions [PDF]

open access: yesJournal of international Conference on Electrical Machines and Systems, 2013
This paper presents an improved direct power control (DPC) strategy for grid-connected voltage source inverter (VSI) under unbalanced and harmonic grid voltage conditions. Based on the mathematic model of VSI with the negative sequence, 5th and 7th harmonic voltage components consideration, a PI controller is used in the proposed DPC strategy to ...
null Yongbo Shen, null Heng Nian
openaire   +1 more source

An effective fault management scheme and comprehensive double line‐frequency ripple propagation analysis for MVDC networks

open access: yesIET 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

Grid Voltage Synchronization for Unbalanced Voltages Using the Energy Operator [PDF]

open access: yes, 2017
This paper presents a novel synchronization technique which can identify the grid voltage frequency and phase angle under unbalanced grid voltage conditions.
Nakiganda, AM, Nwobu, CJ, Zhang, L
core   +1 more source

Secure High DER Penetration Power Distribution Via Autonomously Coordinated Volt/VAR Control [PDF]

open access: yes, 2020
Traditionally voltage control in distribution power system (DPS) is performed through voltage regulating devices (VRDs) including on load tap changers (OLTCs), step voltage regulators (SVRs), and switched capacitor banks (SCBs). The recent IEEE 1547-2018
Joseph, Anto   +2 more
core   +1 more source

Power control strategies during voltage sags according to Spanish grid code [PDF]

open access: yes, 2018
In order to connect any power converters into the grid there are some grid requirements to insure the safe operation of the grid. So, the control of the converters especially during abnormal condition e.g. during voltage sags is
Bakkar, Mostafa   +4 more
core   +1 more source

Grid-tied converter operated under unbalanced and distorted grid voltage conditions

open access: yesBulletin of the Polish Academy of Sciences Technical Sciences, 2020
The paper presents a three-phase grid-tied converter operated under unbalanced and distorted grid voltage conditions, using a multi-oscillatory current controller to provide high quality phase currents. The aim of this study is to introduce a systematic design of the current control loop.
A. Gałecki   +4 more
openaire   +2 more sources

Multi-Target Control Strategy of DFIG Using Virtual Synchronous Generator Based on Extended Power Resonance Control under Unbalanced Power Grid

open access: yesEnergies, 2020
Virtual synchronous generator control is considered as an effective solution to optimize the frequency response characteristics of doubly fed induction generator.
Dan Sun   +5 more
doaj   +1 more source

Harmonic Analysis of Type-3 Wind Turbines Subject to Grid Unbalance

open access: yesIEEE Open Access Journal of Power and Energy, 2023
The objective of this paper is to adequately model a doubly-fed induction generator (DFIG)-based type-3 wind turbine under grid unbalance by considering not only positive and negative-sequence circuits but also the 3rd harmonic circuit. This 3rd harmonic
Mohammed Alqahtani   +2 more
doaj   +1 more source

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