Results 71 to 80 of about 15,910,061 (175)

DC Fault Current Estimation in a Multi-Terminal Hybrid MMC-HVDC System Considering Fault Ride Through Control

, 2021
The DC fault current estimation is of importance to predict the worst scenario and optimize an HVDC system. Based on the hybrid modular multilevel converter (MMC) with the fault ride through (FRT), this paper investigates its DC fault current estimation ...
Kaipei Liu, Liu, Kaipei, Liang Qin, Yi Zhang, Zhang, Yi, Yi Xu, Blaabjerg, Frede; id_orcid, Frede Blaabjerg, Xu, Yi, Qin, Liang   +9 more
core   +1 more source

A comprehensive FRT strategy based on individual arm capacitor voltage control for MMC in hybrid AC/DC distribution grids

International Journal of Electrical Power & Energy Systems
Due to the wide application of modular multilevel converters (MMCs) in hybrid AC/DC distribution grids, enhancing the fault ride-through (FRT) capability of MMC is essential to improve the reliability of the hybrid AC/DC distribution grids. In this paper,
Yu Chen, Zhen Wang, Minghao Wen, Xianggen Yin   +3 more
doaj   +1 more source

Fault Ride-Through Enhancement of Grid Supporting Inverter-Based Microgrid Using Delayed Signal Cancellation Algorithm Secondary Control

Energies, 2019
The growing level of grid-connected renewable energy sources in the form of microgrids has made it highly imperative for grid-connected microgrids to contribute to the overall system stability.
Elutunji Buraimoh, Innocent E. Davidson, Fernando Martinez-Rodrigo   +2 more
doaj   +1 more source

Voltage Support Capability Enhancement Strategy for Grid‐Forming Converters Under Asymmetrical Faults

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper proposes an adaptive virtual impedance control strategy to enhance the fault ride‐through capability of grid‐forming (GFM) converters under asymmetrical faults. By dynamically adjusting the virtual impedance, the proposed method safely maximises positive‐sequence voltage support without aggravating negative‐sequence unbalance, while strictly
Shuozhe Wang, Minxiao Han, Yiwen Fan, Joan‐Marc Rodriguez‐Bernuz, Oriol Gomis‐Bellmunt   +4 more
wiley   +1 more source

Application of parallel resonance fault current limiter for fault ride through capability augmentation of DFIG based wind farm

, 2016
Doubly fed induction generator (DFIG) based wind generators are vulnerable to the grid faults, as their stator windings are directly connected to the grid.
Gilmanur Rashid, Rashid, Gilmanur, Mohd Hasan Ali, Ali, Mohd Hasan   +3 more
core   +1 more source

Study on the fault ride through critical elements and coordinated control of DFIG's converters

The Journal of Engineering, 2019
The increasing of large-scale wind power integration capacity brings great challenges to the safe operation and management of power grid.
Bingjie Tang, Yongning Chi, Yongning Chi, Xinshou Tian, Yan Li   +4 more
doaj   +1 more source

Reliability Improvement of GFM Inverters: Diagnosing DC‐Side Instability Mechanisms and Overvoltage Faults Induced by PV and ESS

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper investigates GFM inverter reliability by analysing DC‐side dynamics from PV and ESS, which can cause DC‐link overvoltage and instability. We demonstrate that high PV generation is a key threat, while counter‐intuitively, limiting ESS capacity can enhance stability by damping control‐induced oscillations.
Fan Tang, Jiayu Liu, ZhenLin Ni, Yu Wang, XiFang Huang, Yang Cao   +5 more
wiley   +1 more source

Neuro Fuzzy Logic Controlled Parallel Resonance Type Fault Current Limiter to Improve the Fault Ride Through Capability of DFIG Based Wind Farm

IEEE Access, 2020
Doubly fed induction generators (DFIGs) are vulnerable to grid related electrical faults. Standards require DFIGs to be disconnected from the grid unless augmented with a fault ride through (FRT) capability.
Md. Rashidul Islam, Jakir Hasan, Md. Rezaur Rahman Shipon, Mohammad Ashraf Hossain Sadi, Ahmed Abuhussein, Tushar Kanti Roy   +5 more
doaj   +1 more source

Synergistic Adaptive Virtual Resistance Current Limiting Strategy for Model Predictive Controlled Virtual Synchronous Generators Under Grid Voltage Sags

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper proposes a synergistic adaptive virtual resistance current‐limiting strategy for model‐predictive‐controlled virtual synchronous generators under grid voltage sags. The inner MPC hard constraint limits the initial fault current, while the adaptive virtual resistance progressively assumes the current‐limiting task through voltage‐reference ...
Zeyu Tao, Xingwei Mu, Jinming Xu
wiley   +1 more source

Strengthening Renewable‐Rich Weak Grids Through Improved Voltage Stability and Fault‐Ride Through Capability

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
To enhance grid stability and resilience in high renewable energy scenarios, this research proposes a cascaded control optimization framework guided by a novel dynamic resilience metric. Validated on a representative Australian grid, the framework significantly reduced voltage overshoot and extended fault clearing times, offering a robust solution for ...
Sadnan Sakib, Muhammad Ahsan Zamee, M. J. Hossain, Md. Biplob Hossain, Md. Ahasan Habib   +4 more
wiley   +1 more source