Control strategy of clustered micro‐grids for grid voltage unbalance compensation without communications [PDF]
IET Generation, Transmission & Distribution, 2020 Grid‐connected converters are expected to provide ancillary service utilising their spare capacities during operation. This study proposes a novel control strategy for clustered micro‐grids to compensate voltage‐unbalance of the power grid at the point of common coupling.
Baoquan Liu +4 more
openalex +2 more sources
Three-Phase Primary Control for Unbalance Sharing between Distributed Generation Units in a Microgrid [PDF]
Energies, 2013 For islanded microgrids, droop-based control concepts have been developed both in single and three-phase variants. The three-phase controllers often assume a balanced network; hence, unbalance sharing and/or mitigation remains a challenging issue ...
Tine L. Vandoorn +3 more
doaj +4 more sources
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. This article first establishes a mathematical model for traditional VSG control, and then analyzes the problems that arise when ...
Chunxue Wen +3 more
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Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2016 This paper presents the operation of grid tied, two level voltage source inverter (VSI) during network voltage unbalance. The control system was implemented in synchronous rotating reference frame dq0 (SRF).
Tomasz Chmielewski
doaj +2 more sources
Control of a hybrid modular multilevel converter during grid voltage unbalance [PDF]
11th IET International Conference on AC and DC Power Transmission, 2015 The recently proposed parallel hybrid modular multilevel converter is considered to be a low loss, low component count converter with soft switching capability of the ‘main’ bridge.
Amankwah, Emmanuel K. +3 more
core +4 more sources
Operation of a hybrid modular multilevel converter during grid voltage unbalance [PDF]
IET Generation, Transmission & Distribution, 2016 The recently proposed parallel hybrid modular multilevel converter is considered to be a low loss, low component count converter with soft switching capability of the ‘main’ H-bridge.
Ainsworth J.D. +6 more
core +5 more sources
Coupling Impedance Modeling Analysis of Grid-Connected Inverters Under Three-Phase Voltage Unbalance [PDF]
EnergiesUnder the condition of asymmetric system voltage, grid-connected inverters exhibit obvious sequence impedance frequency coupling characteristics, which can easily lead to resonance and the misoperation of protection and control devices. Currently, targeted quantitative analyses are insufficient.
Yang Liu +5 more
openalex +3 more sources
Battery Storage Integration in Voltage Unbalance and Overvoltage Mitigation Control Strategies and Its Impact on the Power Quality [PDF]
Energies, 2019 The increased utilisation of distributed renewable energy sources in low voltage grids leads to power quality problems such as overvoltages and voltage unbalance.
Dimitar Bozalakov +4 more
doaj +3 more sources
Co-ordinated Control Strategy for Hybrid Wind Farms with PMSG and FSIG under Unbalanced Grid Voltage Condition [PDF]
, 2016 This paper investigates a control strategy for a wind farm with the direct-driven permanent-magnet synchronous generators (PMSG)-based wind turbines and the fixed speed induction generators (FSIG)-based wind turbines under unbalanced grid voltage ...
Chen, Zhe +5 more
core +3 more sources
Collaborative Voltage Unbalance Elimination in Grid-Connected AC Microgrids With Grid-Feeding Inverters [PDF]
IEEE Transactions on Power Electronics, 2021 © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted ...
Aangel Borrell +5 more
openaire +3 more sources