Mass–spring–damper modeling and stability analysis of type-4 wind turbines connected into asymmetrical weak AC grid
Sign Up to like & getrecommendations! Published in 2020 at "Energy Reports"
DOI: 10.1016/j.egyr.2020.11.161
Abstract: Abstract Nowadays, grid codes of various countries have required that grid-connected wind turbines should possess the capability of negative sequence current control during asymmetrical grid condition. As for type-4 wind turbines, however, due to the… read more here.
Keywords: wind; type wind; negative sequence; spring damper ... See more keywords
Hybrid virtual impedance‐based control strategy for DFIG in hybrid wind farm to disperse negative sequence current during network unbalance
Sign Up to like & getrecommendations! Published in 2020 at "Iet Renewable Power Generation"
DOI: 10.1049/iet-rpg.2019.1277
Abstract: When a hybrid wind farm based on doubly fed induction generator (DFIG) and fixed speed induction generator (FSIG) is connected to an unbalanced network, most of the negative sequence current caused by the unbalanced grid… read more here.
Keywords: wind farm; sequence current; hybrid wind; negative sequence ... See more keywords
Hybrid‐Frequency Power Loop to Eliminate Negative‐Sequence Current for Star‐Connected Cascaded H‐Bridge STATCOM
Sign Up to like & getrecommendations! Published in 2025 at "IET Power Electronics"
DOI: 10.1049/pel2.70060
Abstract: Since the power grid frequently experiences asymmetric operation caused by the unbalanced power load, the current compensation for the negative‐sequence component is typically required to control the star‐connected cascaded H‐bridge STATCOM. However, the compensation range… read more here.
Keywords: frequency power; sequence current; power; negative sequence ... See more keywords
A New Protection Strategy Based on Negative Sequence Current Coordinated Control on the Generator Extremity
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3011519
Abstract: When the single-phase reclosing of the high-voltage circuit, there will be tremendous negative sequence current generation. The connection of inverter-type new energy sources may increase the negative sequence current of the power system. The risks… read more here.
Keywords: protection; sequence current; strategy; generator ... See more keywords
A Negative Sequence Admittance Based Algorithm for Identifying Fault Direction in the Presence of Inverter Based Resources
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3257137
Abstract: Ever increasing integration of renewable resources into contemporary power systems has imposed a unique set of challenges for system protection. Effectiveness of techniques based on conventional system protection theory has long been questionable in protecting… read more here.
Keywords: presence; fault direction; inverter based; based resources ... See more keywords
Negative-Sequence Second-Order Circulating Current Injection for Hybrid MMC Under Over-Modulation Conditions
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2019.2908828
Abstract: Due to the presence of full-bridge submodules (FBSMs), hybrid modular multilevel converters (HMMCs) consisting of FBSMs and half-bridge submodules (HBSMs) can work under the over-modulation conditions, which means that half of the dc voltage is… read more here.
Keywords: modulation conditions; order circulating; sequence second; modulation ... See more keywords
Active and Reactive Power Allocation Strategy to Maximize the Range of Negative-Sequence Current Compensation Based on Hybrid Cascaded STATCOM
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2024.3367897
Abstract: Negative-sequence current compensation (NSCC) is essential to support the imbalanced grid and improve the grid power quality. In medium-/high-voltage applications, the cascaded H-bridge (CHB) static synchronous compensator (STATCOM) is advantageous due to its low voltage… read more here.
Keywords: negative sequence; voltage; sequence current; chb ... See more keywords
Decentralized Negative Sequence Power Based Protection Scheme for Active Power Islands
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Industry Applications"
DOI: 10.1109/tia.2025.3544162
Abstract: The increasing penetration of inverter-interfaced distributed generators (IIDGs) in distribution networks can lead to the formation of power islands. These power islands face issues pertaining to protection due to the low short-circuit currents and non-uniform… read more here.
Keywords: protection; scheme; sequence power; negative sequence ... See more keywords
Symmetrical Components Observer for LPMM Back EMF Based on Negative-Sequence Current Injection
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2021.3060660
Abstract: Thrust force ripple, including no-load detent force and electromagnetic thrust ripple, worsens the precision of the linear permanent magnet machine (LPMM) control system. This article focuses on the elimination of electromagnetic thrust ripple caused by… read more here.
Keywords: back emf; ripple; thrust ripple; symmetrical components ... See more keywords
Negative-Sequence Current Compensation-Based Coordinated Control Strategy for Dual-Cage-Rotor Brushless Doubly Fed Induction Generator Under Unbalanced Grid Conditions
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3186317
Abstract: In this article, we propose a negative-sequence current compensation-based coordinated control strategy for dual-cage-rotor brushless doubly fed induction generator, where the machine-side converter (MSC) and the grid-side converter (GSC) cooperate to mitigate the imbalance in… read more here.
Keywords: negative sequence; sequence current; control; control strategy ... See more keywords
Impact of Inverter-Based Resources on Negative Sequence Quantities-Based Protection Elements
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Power Delivery"
DOI: 10.1109/tpwrd.2020.2978075
Abstract: Inverter-Based Resources (IBRs), including Wind turbine generators (WTGs), exhibit substantially different negative-sequence fault current characteristics compared to synchronous generators (SGs). These differences may cause misoperation of customary negative-sequence-based protective elements set under the assumption of… read more here.
Keywords: protection; based resources; inverter based; sequence ... See more keywords