Results 61 to 70 of about 5,131 (213)

A Control Strategy for Variable Speed Condenser Based on Doubly‐Fed Machine

IET Smart Energy Systems, Volume 2, Issue 2, Page 120-130, June 2026.
This paper proposes a variable speed condenser (VSC) control strategy based on a doubly fed machine. It can be installed in PV stations and wind farms to enhance the grid‐connection performance of renewable energy power plants. ABSTRACT The lack of active power support capability in power systems with large‐scale renewable energy integration has become
Jian Zhang, Wenfeng Li, Huadong Sun, Wei Wei, Zhiqiang Li, Zhichen Geng   +5 more
wiley   +1 more source

Enhancement of Dynamic Modeling for LVRT Capability in DFIG-Based Wind Turbines [PDF]

, 2020
Low-voltage ride through (LVRT) is important for system compensation and reliable operation of the system during balance and unbalanced voltage dips. In this study, a new LVRT capability method was developed using active and passive compensator in doubly
Doesoglu, M. Kenan
core   +1 more source

Changes in Echocardiographic Parameters of Cardiac Function Following Parathyroidectomy: A Meta‐Analysis

Echocardiography, Volume 43, Issue 6, June 2026.
Patients with symptomatic primary hyperparathyroidism (PHPT) have increased cardiovascular risk related to biochemical abnormalities and structural cardiac changes. We performed a meta‑analysis of 24 studies (881 patients) to evaluate echocardiographic changes following parathyroidectomy. Global longitudinal strain significantly improved after surgery,
Arsalan Anees, Femi E. Ayeni, Senarath Edirimanne   +2 more
wiley   +1 more source

Mechanism and Control Analysis of Synchronous Frequency Resonance in Distributed Power Generation System Connected to Grid

Energy Science &Engineering, Volume 14, Issue 4, Page 2263-2276, April 2026.
Small‐signal modeling reveals that insufficient system damping positions conjugate poles near the imaginary axis, fundamentally explaining the SFR mechanism. A virtual resistance control is consequently proposed to damp the resonance and effectively suppress SFR, which is validated through Hardware‐in‐the‐Loop experiments.
Yujie Gu, Jianbo Yi, Haoran Rui, Qi Huang   +3 more
wiley   +1 more source

Adaptive LVRT Control Strategy for VSC Based on Hybrid Synchronization Control

IEEE Access
In recent years, the problem of large-scale renewables tripping caused by power grid faults has occurred from time to time. By analyzing the power angle and fault current characteristics of the hybrid synchronization control (HSC)-based voltage source ...
Huang-Qing Xiao, Kai Gong, Huichen Gan
semanticscholar   +1 more source

Comparison of Fuzzy Logic and PID Control in H‐Bridge Inverter: Performance Analysis and Response Optimization

Engineering Reports, Volume 8, Issue 2, February 2026.
Under identical conditions, we benchmark PID against Fuzzy‐Logic control for a single‐phase H‐bridge inverter. FLC achieves faster rise/settling with lower THD and better disturbance rejection than tuned PID while requiring explicit rule design—offering a reproducible baseline and deployment guidance for power‐quality‐constrained inverter applications.
Baraa Taha, Ayad Q. Al‐Dujaili, Eduardo Campos Mercado, Wulfran Fendzi Mbasso, Ali Elrashidi   +4 more
wiley   +1 more source

ENHANCING LOW VOLTAGE RIDE THROUGH CAPABILITY IN UTILITY GRID CONNECTED SINGLE PHASE SOLAR PHOTOVOLTAIC SYSTEM [PDF]

Journal of Engineering Science and Technology, 2018
The steady rise in utility grid penetration of single phase solar photovoltaic system has contributed to the mandatory requirement of Low Voltage Ridethrough (LVRT) capability. LVRT capability provides stable grid integration during transient conditions.
RINI ANN JERIN A., MANU THOMAS, PALANISAMY K., UMASHANKAR S.   +3 more
doaj  

Voltage Sag Evaluation in Power Grids Considering the Voltage Support Capabilities of Doubly-Fed Wind Farms During LVRT

IEEE Transactions on Power Delivery
This paper introduces how doubly-fed wind farms can compensate for reactive power demands of the grid during low voltage ride through (LVRT) events, thereby providing voltage support. This capability significantly influences the assessment of voltage sag.
Yi Zhang, Jia-Zhong Zhang, Chuandong Li, Jie-Yu Ou, Wei Zhao, Shu-Qi Zhang   +5 more
semanticscholar   +1 more source

Two‐Step Clustering‐Based Equivalent Modeling of Large‐Scale Wind Farms for Enhanced Primary Frequency Regulation

Wind Energy, Volume 29, Issue 2, February 2026.
ABSTRACT The focus on wind power frequency regulation has largely been on individual wind farms, which presents challenges in meeting the coordinated operation needs of multiple stations within large‐scale installations. To address issues of model simplification and accuracy, we propose a large‐scale wind farm equivalent modeling method based on ...
Hongchun Shu, Liuqing Zhu, Botao Shi, Guangxue Wang, Shunguang Lei   +4 more
wiley   +1 more source

Optimized Series Dynamic Braking Resistor for LVRT of Doubly-Fed Induction Generator With Uncertain Fault Scenarios

IEEE Access, 2022
The terminal-connected series dynamic braking resistor (SDBR) is applied to assist the low-voltage ride-through (LVRT) of the doubly-fed induction generator (DFIG). With the fault current and switch-in of the SDBR, the stator voltage oscillates, thus the
Jie-Jie Huang, Lei Zhang, Shun Sang, Xiao-Cen Xue, Xinsong Zhang, T. Sun, Wei-Min Wu, Ning Gao   +7 more
semanticscholar   +1 more source