Results 101 to 110 of about 13,310 (293)

DC‐link voltage stability enhancement in intermittent microgrids using coordinated reserve energy management strategy

open access: yesIET Renewable Power Generation
In recent years, due to its cost effectiveness and environmental advantages, demand for renewable energy resources has grown and their contributions to grid power has therefore increased while requiring effective frequency and voltage regulation. DC link
Saqif Imtiaz   +5 more
doaj   +1 more source

A low-frequency oscillation suppression strategy for matching control-based grid-forming converters using transient kinetic energy dissipation

open access: yesZhejiang dianli
Matching control based on the dynamics of the DC-link capacitor voltage is a widely used grid-forming (GFM) control approach. Its basic control logic is established by leveraging the equivalence between the capacitor voltage equation and the rotor motion
GAO Hongmei   +6 more
doaj   +1 more source

Analysis and design of DC-link capacitor in cascaded H-bridge multilevel active front-end converter

open access: yes, 2021
Medium-voltage grid-tied systems often use a cascaded H-bridge multi-level active front-end. In this converter, dc link bus capacitors play an important role in stabilizing the converter and enabling both active and reactive power injections. The present
Malik, Muhammad Shehroz
core  

Conformal Metallosaccharide Hybrid Films for Protecting Wood Surfaces From Environmental Damage

open access: yesAdvanced Functional Materials, EarlyView.
Ti‐ribose hybrid films fabricated by molecular layer deposition form a conformal and uniform coating on wood surfaces, which provides water repellence, dimensional stability, and resistance to acidic and alkaline environments, while preserving the natural appearance.
Wenwen Wang   +7 more
wiley   +1 more source

A Brushless DC Motor Drive Without a DC Link Capacitor

open access: yes, 2015
In recent years, economic and environmental considerations have led the industry towards energy efficient technologies. As a result, in the context of industrial motor drives, Brushless DC (BLDC) and Permanent Magnet Synchronous (PMS) motors have become ...
Hewa Kokawalage, Samitha Ransara
core  

Instantaneous thermal modeling of the DC-link capacitor in PhotoVoltaic systems [PDF]

open access: yes, 2015
Capacitors have been witnessed as one of the weak points in grid-connected PhotoVoltaic (PV) applications, and thus efforts have been devoted to the design of reliable DC-link capacitors in PV applications. Since the hot-spot temperature of the capacitor
Ma, Ke   +7 more
core   +1 more source

PolyGraph – Flexible, Biocompatible & Electrically Optimized Graphene‐Polymer Composites for Next‐Generation Neural Interfaces

open access: yesAdvanced Healthcare Materials, EarlyView.
PolyGraph, a flexible graphene‐polycaprolactone nanocomposite, unites conductivity, biocompatibility, and processability for next‐generation neural interfaces. Fabricated into microneedle arrays with ultra‐flexible backings, PolyGraph enables bidirectional neuronal recording and stimulation in brain tissue, advancing brain‐computer interface (BCI) and ...
Jack Maughan   +12 more
wiley   +1 more source

FCS-MPC for four-switch three-phase AC-DC converters with DC-link capacitor voltage balancing

open access: yesJournal of Measurement Science and Instrumentation, 2019
Due to the decrease in the number of switches for the four-switch three-phase alternating current-direct current(FSTP AC-DC) converter, it can easily lead to DC-link capacitor voltage imbalance and the system stability reduction.
MA Wei-jie, ZHANG Bao-ge
doaj  

Epidermal Patch Technologies for Integrated Healthcare and Infection Management

open access: yesAdvanced Healthcare Materials, EarlyView.
Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang   +7 more
wiley   +1 more source

Analysis of DC-Link capacitor losses in three-level neutral point clamped and cascaded H-Bridge voltage source inverters

open access: yes
Loss estimation is a critical aspect of inverter design.The present work investigates the losses occurring in the DC-link capacitors of the three-phase three-level neutral point clamped and cascaded H-Bridge inverter topologies, by performing a harmonic ...
Sharkh, S. M.   +2 more
core  

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