Results 81 to 90 of about 2,216,872 (294)

Reactivity‐Guided Janus Graphene With Asymmetric Interfacial Electrostatics for Tunable Charge Transport

Advanced Materials, EarlyView.
Stepwise dual‐side functionalization creates covalent Janus graphene with chemically and electrostatically asymmetric interfaces. The resulting nonadditive surface‐potential response and pronounced charge‐transport modulation demonstrate a versatile route for tailoring the electronic properties of graphene.
Shishi Liu, Zhuting Hao, Mira Kreßler, Oguzhan Yücel, Lotte Polling, Adrián Dewambrechies, Wesley Pietsch, Philip Nickl, Felix Fels, Kevin Pagel, Markus R. Heinrich, Patryk Kusch, Kirill Bolotin, Xin Chen, Siegfried Eigler   +14 more
wiley   +1 more source

An Advanced Dual Energy Control with Energy Dissipation Strategy to Enhance Fault Ride-Through in Offshore Wind MMC-HVDC Systems

Energies
The Modular Multilevel Converter-based High-Voltage Direct Current (MMC-HVDC) system has emerged as a promising technology to integrate offshore wind farms (OWFs).
Dileep Kumar, Wajiha Shireen
doaj   +1 more source

Theoretical and Experimental Investigation of Switching Ripple in the DC-Link Voltage of Single-Phase H-Bridge PWM Inverters

Energies, 2017
Direct current (DC)-link voltage ripple analysis is essential for determining harmonic noise and for DC-link capacitor design and selection in single-phase pulse-width modulation (PWM) inverters.
Marija Vujacic, Manel Hammami, Milan Srndovic, Gabriele Grandi   +3 more
doaj   +1 more source

Descriptor‐Informed Screening of Interface‐Active Molecules for Efficient Magnesium Metal Anodes

Advanced Materials, EarlyView.
A descriptor‐informed molecular screening strategy identifies 4‐bromo‐N, N‐dimethylaniline (BrNNA) as an interface‐active electrolyte component that enables fast Mg stripping/plating in Mg(TFSI)2‐based electrolytes. By simultaneously regulating Mg2+ solvation and interphase formation, the BrNNA‐containing electrolyte delivers activation‐free Mg ...
Hao Xu, Yue Li, Tian Xie, Arafat Hossain Khan, Fengzhan Sun, Zhao Li, Lingyue Liu, Zhaohui Yang, Xinlong Xie, Huayu Qiu, Quanquan Guo, Tian Sun, Xingyuan Chu, Jingwei Du, Jianxin Zou, Xinliang Feng, Minghao Yu   +16 more
wiley   +1 more source

Coordinated Inertia Synthesis and Stability Design for PV Systems Utilizing DC-Link Capacitors

Energies
The increasing penetration of inverter-based resources (IBRs) has been reducing system inertia and intensifying frequency stability challenges. Hence, various grid demands have been imposed on grid-connected systems, e.g., requiring the provision of an ...
Qi Hua, Lunbo Deng, Qiao Peng, Yongheng Yang   +3 more
doaj   +1 more source

Demagnetization‐Driven Nanoscale Chirality‐Selective Phonon Transport

Advanced Materials, EarlyView.
Chiral heat flow is switched in a ferromagnet/chiral α‐SiO2 heterostructure by controlling the angular momentum of demagnetization‐driven chiral phonons. When phonon handedness matches the crystal chirality, nanoscale thermal transport is enhanced; the opposite handedness suppresses transport, establishing a magnetization‐tunable chiral phonon diode ...
In Hyeok Choi, Daeheon Kim, Yeon Jong Jin, Seungmo Yang, Tae‐Seong Ju, Changsoo Kim, Chanyong Hwang, Dongbin Shin, Jong Seok Lee   +8 more
wiley   +1 more source

Directional Confinement Governed Ion Transport for Efficient Actuation

Advanced Materials, EarlyView.
Structural anisotropy provides an effective means to regulate ion transport in polymer electrolytes. Directionally aligned channels formed by freeze‐drying provide continuous pathways for ion migration, enhancing ion mobility and simultaneously improving the strain and blocking force of ionic actuators.
Yufei Zhang, Qiuchun Lu, Adit Gupta, Sen Wang, Xueyang Wang, Jian Yu, Xuanyi Hu, Daniel Mandler, Pooi See Lee   +8 more
wiley   +1 more source

An Offline Condition Monitoring Method for the DC-Link Capacitors in Power Electronic Converters

IEEE Access
Electrolytic capacitors are widely used as DC-link components in power electronic converters such as switched-mode power supplies (SMPSs) and inverters; however, they are also among the most vulnerable components, and their capacitance degradation ...
Xueli Zhu, Yajie Huang, Yuepeng Zhang, Jun Wu, Yang Yang, Linzhong Xia, Bo Gao   +6 more
doaj   +1 more source

A New Evaluation Circuit for DC-link Capacitors Used in a Three-Phase Inverter [PDF]

, 2015
2015 IEE-Japan Industry Applications Society, September 2-4, 2015, Oita University, Oita, JapanDC-link capacitors in power electronic converters are a major constraint on improvement of power density as well as reliability.
長谷川, 一徳, 大村, 一郎, 西澤, 伸一   +2 more
core  

Capacitor and Switch Size Comparisons on High-Power Medium-Voltage DC-DC Converters with Three-Phase Medium-Frequency Transformer

, 2021
This paper compares the capacitor requirement of\ua0selected isolated DC-DC converters for high-power and medium-voltage applications. A numerical comparison is made for a range\ua0of switching frequencies and transition times, considering not\ua0only ...
Okazaki, Yuhei,, Alikhanzadehalamdari, Babak, Thiringer, Torbj\uf6rn, Okazaki, Yuhei, Alikhanzadehalamdari, Babak,, Thiringer, Torbjörn,   +5 more
core   +1 more source