Results 41 to 50 of about 571 (248)

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Single‐phase AC‐AC Z‐source converter based on asymmetrical gamma structure with continuous input current and safe commutation strategy

IET Power Electronics, 2021
This paper examines a new topology of the AC‐AC Z‐source converter based on asymmetric Gama structure is proposed. The proposed converter has all the common features such as common ground between input and output, realizing the continuous input current ...
Seyyed Mohammad Javad Mousavi, Ebrahim Babaei, Darioush Alizadeh, Hasan Komurcugil   +3 more
doaj   +1 more source

Advanced wind energy convertors using electronic power conversion. [PDF]

, 1997
SIGLEAvailable from British Library Document Supply Centre-DSC:DXN013000 / BLDSC - British Library Document Supply CentreGBUnited ...
Chen, Z., Chen, Zhe
core  

Low power wind energy conversion system based on variable speed permanent magnet synchronous generators [PDF]

, 2014
This paper presents a low power wind energy conversion system (WECS) based on a permanent magnet synchronous generator and a high power factor (PF) rectifier.
L.G. González, Figueres Amorós, Emilio, Carranza Castillo, Oscar, G. Garcerá, O. Carranza, González Morales, Luis Gerardo, E. Figueres, Garcerá, Gabriel   +7 more
core   +1 more source

Resolving the Cu(bdc) Conundrum: Identifying Non‐Porous Packing of Prototypical Coordination‐Network Thin Films Combining Advanced Diffraction Techniques and Computational Modelling

Advanced Functional Materials, EarlyView.
Solution‐processed Cu(bdc) forms prototypical MOF thin films for which a multitude of not fully satisfactory structural models have been suggested. Combining rotating grazing‐incidence diffraction and X‐ray reflectivity on two complementary samples with density‐functional theory, we first discard the previously suggested models and then identify a non ...
Narges Taghizade, Mario Fratschko, Robbin Steentjes, Mercedes Linares‐Moreau, Paolo Falcaro, Christof Wöll, Roland Resel, Egbert Zojer   +7 more
wiley   +1 more source

Stability enhancement of bi‐directional voltage source converters in modern power systems

IET Generation, Transmission & Distribution
In future modern power systems, reliability and resilience could be an extreme challenge caused by the stability issues of the bidirectional power converters (BPCs).
Mohamad Amin Ghasemi, Seyed Fariborz Zarei, Saeed Peyghami   +2 more
doaj   +1 more source

Variable weight coefficient MPC control strategy for qZSI‐VSG wind power grid‐connected system

IET Renewable Power Generation, 2023
Quasi‐Z source inverters (qZSI) can overcome the disadvantages of conventional wind power systems, because of achieving the balanced DC‐link voltage by using its boost ability. The majority of currently used control methods for conventional inverters are
Yang Zhang, Yihan Liu, Bing Luo, Yun Ling   +3 more
doaj   +1 more source

Tailoring Li‐ion Storage and Transport in Two‐Dimensional Conjugated Metal‐Organic Frameworks via Precise Nitrogen Incorporation

Advanced Functional Materials, EarlyView.
Two nitrogen‐doped 2D conjugated metal‐organic frameworks (2D c‐MOFs, namely Cu‐Nx‐OHBA, x = 2 or 4) are synthesized, featuring precise nitrogen incorporation via rational ligand design. The Cu‐Nx‐OHBA 2D c‐MOFs are largely tailorable by varying skeletal nitrogen density, with respect to electrical conductivity, Li‐storage capacitance, and Li‐transport
Xiangyu Li, Shaoze Shi, Fucai Cui, Rashid Iqbal, Pengyu Wang, Tianrui Wu, Jingcheng Hao, Renhao Dong   +7 more
wiley   +1 more source

An active‐support control strategy for multi‐winding medium‐frequency power electronics transformer for renewable generation

IET Renewable Power Generation
A high proportion of renewable energy is connected to the current power grid through power electronics interface devices, which makes the power system to have the low‐inertia dynamic characteristics.
Xuejiao Li, Jiawei Man, Mingyan Wang, Bingda Zhu, Chuang Liu   +4 more
doaj   +1 more source

A single‐loop and current‐sensorless control for on‐grid seven‐level photovoltaic microinverter

IET Power Electronics, 2023
This paper proposes a single‐phase transformerless photovoltaic (PV) microinverter for low and medium‐voltage applications. The proposed approach comprises a suitable combination of multilevel boost/buck and H‐bridge topologies with a current‐sensorless ...
Juan R. Rodriguez, Gabriel E. Mejia‐Ruiz, Mario R. Arrieta Paternina, Alfredo Velazquez‐Ibanez, Nadia Maria Salgado‐Herrera, Mario Alberto Santoyo‐Anaya, Alejandro Zamora‐Mendez, Harold R. Chamorro   +7 more
doaj   +1 more source