Results 31 to 40 of about 257 (201)

Modeling and Harmonic Stability of MMC-HVDC With Passive Circulating Current Filters

open access: yesIEEE Access, 2020
A modular multilevel converter (MMC) is an emerging converter technology widely used in wind power applications using high-voltage direct current (HVDC) transmission, and it has been largely investigated in medium-voltage solar harvesting as well as ...
Bo Zhang, Hamed Nademi
doaj   +1 more source

The analysis of steady‐state operation characteristic and resonance phenomenon considering all the harmonic components of modular multilevel converter for HVDC

open access: yesIET Power Electronics, 2022
Analysing the steady‐state operation characteristic of the modular multilevel converter (MMC) in time domain poses challenges due to the presence of harmonic components in the arm current and capacitor voltage.
Pu Liu   +5 more
doaj   +1 more source

Recent Advances in Ferrite‐Based Materials for Biomedical Applications: A Comprehensive Review

open access: yesAdvanced Materials, EarlyView.
Ferrite nanoplatforms are presented as tunable biomedical materials in which synthesis control, cation engineering, defect/morphology regulation, and surface functionalization govern structure–property–bioactivity relationships. These design strategies enable multifunctional applications including MRI contrast, magnetic hyperthermia, targeted drug ...
Pramod D. Mhase   +6 more
wiley   +1 more source

Multi-hierarchy control strategy in abc coordinate for modular multilevel matrix converter in fractional frequency transmission system

open access: yesThe Journal of Engineering, 2019
This paper proposes a multi-hierarchy control strategy in abc coordinate for modular multilevel matrix converter (M^3C) in fractional frequency transmission system (FFTS).
Zhujian Ou, Guangzhu Wang
doaj   +1 more source

The analytical model of modular multilevel converter based on the harmonic balance theory

open access: yesEnergy Reports, 2020
This paper proposes an analytical model for the modular multilevel converter (MMC) based on the theory of harmonic balance, which removes the iteration process for traditional models. The proposed model considers dynamic harmonic interactions between the
Lijun Xie   +5 more
doaj   +1 more source

Comprehensive optimization framework for transmission expansion planning with fractional frequency transmission system

open access: yesIET Generation, Transmission & Distribution, 2023
The Fractional Frequency Transmission System (FFTS) operates with low frequency to decrease the electrical length of AC transmission lines, consequently enhancing transmission capacity.
Zhongqi Cai   +6 more
doaj   +1 more source

Nonwoven‐Based Textile Architectures for Energy Storage Applications: Materials, Preparation, Characterization, and Prospects

open access: yesAdvanced Materials Interfaces, EarlyView.
Nonwoven textile architectures are emerging as versatile platforms for next‐generation energy storage, demonstrating how tailored materials and fabrication strategies enhance ion transport, conductivity, flexibility, and scalability for high‐performance sustainable devices.
Tarikul Islam   +6 more
wiley   +1 more source

Ferroelectric Devices for In‐Memory and In‐Sensor Computing

open access: yesAdvanced Science, EarlyView.
Inspired by biological systems, in‐memory and in‐sensor computing overcome von Neumann bottlenecks. Ferroelectric devices can mimic synaptic functions and sense stimuli like light or force, therefore are ideal for these paradigms. This review introduces the ferroelectric devices applied for in‐memory and in‐sensor computing, covering their structures ...
Hong Fang   +5 more
wiley   +1 more source

Analysis of two-phase operation characteristics of a flexible low-frequency transmission system

open access: yesZhejiang dianli, 2022
The two-phase operation mode of a flexible low-frequency transmission system is based on the M3C (modular multilevel matrix converter). This paper establishes a complex sequence network for the low-frequency system to analyze the steady-state operation ...
LU Yi   +6 more
doaj   +1 more source

Harnessing Phase Separation for the Development of High‐Performance Hydrogels

open access: yesAdvanced Science, EarlyView.
ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao   +3 more
wiley   +1 more source

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