A Self-Regulated Virtual Impedance control of VSG in a microgrid
Sign Up to like & getrecommendations! Published in 2021 at "Electric Power Systems Research"
DOI: 10.1016/j.epsr.2021.107289
Abstract: Abstract In this paper, a self-regulated virtual impedance (SRVI) control of virtual synchronous generator (VSG) is proposed. In the modern power system, large penetration of inverter-interfaced distributed generator (DG) decreases the equivalent inertia of the… read more here.
Keywords: vsg; regulated virtual; control; self regulated ... See more keywords
Microgrid operation improvement by adaptive virtual impedance
Sign Up to like & getrecommendations! Published in 2018 at "IET Renewable Power Generation"
DOI: 10.1049/iet-rpg.2018.5303
Abstract: Microgrids (MGs) are regarded as the best solution for optimal integration of the renewable energy sources into power systems. However, novel control strategies should be developed because of the distinct inherent feature of MG components… read more here.
Keywords: control; power; adaptive virtual; reactive power ... See more keywords
Virtual impedance control for a regional dynamic voltage restorer
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Electronics"
DOI: 10.1080/00207217.2018.1494321
Abstract: ABSTRACT A dynamic voltage restorer (DVR) can be installed in a middle-voltage (MV) power grid, to concurrently protect a cluster of sensitive loads from voltage sags. To further improve its efficiency and reduce the difficulty… read more here.
Keywords: dynamic voltage; voltage; voltage restorer; control ... See more keywords
Design and Convergence Analysis of an Improved Droop Controller With Adaptive Virtual Impedance
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3112463
Abstract: Microgrids are used to incorporate distributed generators (DGs) together so that DGs can be scheduled to satisfy the load demand. Usually droop controllers are adopted so that each DG shares the load equally. To improve… read more here.
Keywords: improved droop; controller; droop controller; virtual impedance ... See more keywords
Improving Inverter Output Current Controller Under Unbalanced Conditions by Using Virtual Impedance
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3133426
Abstract: Nowadays, three-phase inverters have been commonly used in power systems, especially in renewable energy and motor drives applications. In many applications, the inverter has to generate balanced sinusoidal three-phase currents even though it is connected… read more here.
Keywords: virtual impedance; sequence; method; inverter output ... See more keywords
Stability Analysis and Damping Enhancement Based on Frequency-Dependent Virtual Impedance for DC Microgrids
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2016.2598821
Abstract: This paper focuses on the stability analysis and damping performance improvement of dc microgrids. The small-signal model of a dc microgrid has been derived. Eigenvalue analysis results reveal the relationship between the system stability and… read more here.
Keywords: frequency; stability; virtual impedance; stability analysis ... See more keywords
Virtual Impedance Design Considerations for Virtual Synchronous Machines in Weak Grids
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2019.2912071
Abstract: Most renewable energy sources (RESs) are interfaced to electricity grids via voltage-source converters (VSCs). To facilitate the integration, the controllers based on the emulation of synchronous generators have been increasingly used. This control technique is… read more here.
Keywords: virtual synchronous; impedance; weak grids; virtual impedance ... See more keywords
A Virtual-Impedance Droop Control for Accurate Active Power Control and Reactive Power Sharing Using Capacitive-Coupling Inverters
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Industry Applications"
DOI: 10.1109/tia.2020.3012934
Abstract: Capacitive-coupling inverters (CCIs) have low operation voltage and enhanced reactive power control capability. It is a promising alternative to provide reactive power and voltage regulation in microgrids (MGs). Droop control is one of the most… read more here.
Keywords: droop control; control; reactive power; power ... See more keywords
Vision-Based Virtual Impedance Control for Robotic System Without Prespecified Task Trajectory
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3199917
Abstract: This article proposes a vision-based virtual impedance control (VBVIC) scheme for the robotic system without prespecified task trajectory, where a neural network (NN) is used to compensate for the unmodeled dynamics and parameter uncertainties. In… read more here.
Keywords: impedance control; virtual impedance; control; impedance ... See more keywords
Unified Active Damping Strategy Based on Generalized Virtual Impedance in LCL-Type Grid-Connected Inverter
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3232647
Abstract: Extensive solutions have been proposed to damp LCL filter resonance. However, the time delay caused by computation and modulation process aggravates the complexity of current loop analysis. In this article, a generalized virtual impedance model… read more here.
Keywords: active damping; damping strategy; virtual impedance; lcl ... See more keywords
A Decentralized Current Sharing Strategy for Islanded Resistive Microgrids Based on Iterative Virtual Impedance Regulation
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Industrial Informatics"
DOI: 10.1109/tii.2021.3110951
Abstract: The output impedances of inverters can be reshaped to improve current sharing accuracy in islanded microgrids. This article proposes a decentralized current sharing strategy based on iterative virtual impedance regulation (IVIR). The whole IVIR process… read more here.
Keywords: virtual impedance; current sharing; strategy; impedance ... See more keywords