Results 51 to 60 of about 419 (138)

Real‐Time Active Power Control Method Considering Voltage Security Constraints and Effective Regulation Space of Multitype Resources

IET Energy Systems Integration, Volume 8, Issue 1, January/December 2026.
ABSTRACT Renewable energy bases in Desert‐Gobi‐Wasteland (DGW) areas connected with high‐voltage direct current (HVDC) transmission systems show notable weak‐grid features, including low inertia, weak damping and a low short‐circuit ratio. This results in strong active power–voltage (P–V) coupling effects, making existing real‐time active power control
Guoqing Li, Heyang Sun, Shouqi Jiang, Yechun Xin, Jian Lou   +4 more
wiley   +1 more source

The analysis of the threshold value of the complex short-circuit ratio index and its significance in the context of static voltage stability

Frontiers in Energy Research
The short-circuit ratio index (SCR) can effectively quantify the voltage support strength in traditional DC grid-connected scenarios, yet it cannot reasonably describe the voltage support strength in diverse device grid connection scenarios.
Pan Lei, Jinquan Zhao
doaj   +1 more source

Ferromagnetically Shielded Fault Current Limiter (FS‐FCL) Evaluation in Power Line

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This study introduces a new ferromagnetically shielded FS‐FCL design and its control strategy for limiting and interrupting fault currents. The fully shielded core structure enhances inductance and prevents saturation, enabling an immediate fault response without causing voltage drop during normal conditions.
Kamran Ghorbanyan, Selim Acar
wiley   +1 more source

A High-Efficiency RF Harvester with Maximum Power Point Tracking

Proceedings, 2018
This paper presents the implementation of a high-efficiency radiofrequency (RF) harvester, which consists of a rectenna and a maximum power point tracker (MPPT).
Manel Gasulla, Francesc J. Robert, Josep Jordana, Edgar Ripoll-Vercellone, Jordi Berenguer, Ferran Reverter   +5 more
doaj   +1 more source

Stability and Synchronization of MMC‐HVDC Systems Using SRF and Inertia‐Based PLLs

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This study investigates the influence of synchronous reference frame PLL (SRF‐PLL) and the inertia PLL (IPLL) on the stability of grid‐connected modular multilevel converter high voltage direct current (MMC‐HVDC) systems. The findings highlight intrinsic stability limitations of PLL‐based systems, offering insights toward more stable, PLL‐less ...
Shuai Wang, Robin Preece, Mike Barnes
wiley   +1 more source

Total Distortion—A New Power Quality Index on Current Harmonic Evaluation for Users With Internal Loads and DERs

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
ABSTRACT The IEEE Std 519–2022 IEEE Standard for harmonic control in electric power systems is widely used for controlling the harmonics in the electric power system. It uses the total demand distortion (TDD) for current harmonic evaluation at the point of common coupling (PCC).
Sivaraman P, Sharmeela C, Sanjeevikumar P, Sabari B. K   +3 more
wiley   +1 more source

State of Charge Estimation of a Lithium Ion Battery Based on Adaptive Kalman Filter Method for an Equivalent Circuit Model

Applied Sciences, 2019
Due to its accuracy, simplicity, and other advantages, the Kalman filter method is one of the common algorithms to estimate the state-of-charge (SOC) of batteries. However, this method still has its shortcomings.
Xiao Ma, Danfeng Qiu, Qing Tao, Daiyin Zhu   +3 more
doaj   +1 more source

A rapid simulation method for full-bridge sub-module MMC based on bridge arm equivalent capacitance

Zhejiang dianli
MMC （modular multilevel converter） contains a large number of switching elements， which brings a huge computational burden to the electromagnetic transient simulation.
LU Yi, WU Junjian, QIU Peng, CHEN Qian, HUANG Xiaoming, XU Kehan, XU Zheng   +6 more
doaj   +1 more source

SOC Estimation with an Adaptive Unscented Kalman Filter Based on Model Parameter Optimization

Applied Sciences, 2019
State of charge (SOC) estimation is generally acknowledged to be one of the most important functions of the battery management system (BMS) and is thus widely studied in academia and industry.
Xiangwei Guo, Xiaozhuo Xu, Jiahao Geng, Xian Hua, Yan Gao, Zhen Liu   +5 more
doaj   +1 more source

Improved MPPT for PV Systems Combining Thevenin Equivalents with Simple Neural Networks

ITEGAM-JETIA
Efficient MPPT (Maximum Power Point Tracking) algorithms are required for PV (Photovoltaic) systems in order to obtain maximum power under temperature and sun irradiation variations.
khessam medjdoub, Marwa Bouazza, Mohamed Habbab, Abdeldjebar Hazzab, Anis Njeh, Hafedh Trabelsi   +5 more
doaj   +1 more source