Results 71 to 80 of about 1,782 (181)
Impedance-compensated grid synchronisation for extending the stability range of weak grids with voltage source converters [PDF]
, 2016 This paper demonstrates how the range of stable power transfer in weak grids with voltage source converters (VSCs) can be extended by modifying the grid synchronisation mechanism of a conventional synchronous reference frame phase locked loop (PLL).
D'Arco, Salvatore +3 more
core +2 more sources
EcoMat, Volume 7, Issue 7, July 2025.Focusing on the black‐box problem in the battery field, this review provides an introduction to dynamic electrochemical impedance spectroscopy (DEIS), an emerging nondestructive testing technique. It first systematically explains the fundamental principles of DEIS and its analytical methods. Then, it explores its applications across four key areas: (1)
Xinyi Zhang +5 more
wiley +1 more source
Frontiers in Energy ResearchThe 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
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 +5 more
doaj +1 more source
Radiation Model for Small Horizontal Submodules [PDF]
, 2012 katedra elektromagnetického ...
Válek Martin
core
Accurate Assessment of Decoupled OLTC Transformers to Optimize the Operation of Low-Voltage Networks [PDF]
, 2019 Voltage control in active distribution networks must adapt to the unbalanced nature of most of these systems, and this requirement becomes even more apparent at low voltage levels. The use of transformers with on-load tap changers is gaining popularity,
Rodríguez del Nozal, Álvaro +2 more
core +1 more source
Enhancing Ultrasound Power Transfer: Efficiency, Acoustics, and Future Directions
Advanced Materials, Volume 37, Issue 23, June 12, 2025.Implantable devices significantly enhance healthcare but are limited by battery life. Ultrasound power transfer technology offers a promising solution for sustainable operation. This review addresses gaps in current research, particularly in sound field analysis and energy efficiency optimization.
Yi Zheng +6 more
wiley +1 more source
Edge of Chaos Theory Unveils the First and Simplest Ever Reported Hodgkin–Huxley Neuristor
Advanced Electronic Materials, Volume 11, Issue 8, June 2025.This manuscript presents the first and simplest ever‐reported electrical cell, which leverages one memristor on Edge of Chaos to reproduce the three‐bifurcation cascade, marking the entire life cycle from birth to extinction via All‐to‐None effect of an electrical spike, also referred to as Action Potential, across axon membranes under monotonic ...
Alon Ascoli +12 more
wiley +1 more source
Energy Conversion and Economics, Volume 6, Issue 3, Page 196-212, June 2025.Abstract Constant power loads (CPLs) introduce negative impedance in direct current microgrids (DCMGs), which is a major challenge. This negative impedance can significantly reduce the overall damping of the system, making it less stable and harder to control. To address this issue, output virtual resistance (VR) shaping is commonly employed to enhance
Jitendra Prajapati +2 more
wiley +1 more source
A New Way of Controlling Parallel-Connected Inverters by Using Synchronous-Reference-Frame Virtual Impedance Loop:—Part I: Control Principle [PDF]
, 2016 A novel simple and effective autonomous current-sharing controller for parallel three-phase inverters is proposed in this paper. The proposed controller provides faster response and better accuracy in contrast to the conventional droop control, since ...
Guan, Yajuan +4 more
core +2 more sources