Results 61 to 70 of about 182,357 (309)
All-pass-filter-based active damping for VSCs with LCL filters connected to weak grids [PDF]
, 2018 LCL filters are commonly used to connect Voltage Sourced Converters (VSCs) to the grid. This type of filter is cheaper than a single inductor for the same current THD, but it generates resonance problems if no active or passive damping method is applied.
Bueno, Emilio J. +3 more
core +1 more source
Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field
Advanced Functional Materials, EarlyView.Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi +7 more
wiley +1 more source
Semi-Active Damping of Mechanical Vibrating Systems Using Variable Stiffness Actuator
Al-Khawarizmi Engineering Journal, 2018 In this research, a variable stiffness actuator is proposed to enhance the damping of the mechanical vibrating system. The frequency response analysis of the vibrating system is dependant in order to analyze and synthesis this semi-active damping, where ...
Yarub Omer Naji Al-Azzawi
doaj
International Journal of Electrical Power & Energy SystemsIn this paper, the damping characteristics of the grid-forming permanent magnet synchronous generator (PMSG)-based wind turbine (WT) under different damping controls are investigated considering energy efficiency.
Xiaotian Yuan +4 more
doaj +1 more source
Passivity Based Damping Design for Grid-Connected Converter With Improved Stability
IEEE Access, 2019 The impedance interactions between weak grid and LCL-filtered converter can bring severe harmonic resonance. Recently, frequency domain passivity theory has been applied to converter damping design.
Huaiyuan Liu +4 more
doaj +1 more source
IET Power Electronics, 2021 This paper presents a novel approach to adapt the conventional direct power control (DPC) methods that are applied to ac/dc converters with an inductive capacitive inductive (LCL) filter.
Chuanjin Zhang +5 more
doaj +1 more source
Active Damping Using Distributed Anisotropic Actuators [PDF]
, 2010 A helicopter structure experiences substantial high-frequency mechanical excitation from powertrain components such as gearboxes and drive shafts. The resulting structure-borne vibration excites the windows which then radiate sound into the passenger ...
Cabell, Randolph H. +3 more
core +2 more sources
Advanced Functional Materials, EarlyView.A bimetallic Mn–Ca nanoreactor (MCC) is developed as a non‐nucleotide STING nanoagonist for cancer metalloimmunotherapy. MCC induces Ca2+ overload and hydroxyl radical generation, resulting in mitochondrial damage and mtDNA release. The released mtDNA cooperates with Mn2+ to robustly activate cGAS–STING signaling.
Xin Wang Mo +7 more
wiley +1 more source
Semi-Active Damping of Mechanical Vibrating SystemsUsing Variable Stiffness Actuator
Al-Khawarizmi Engineering Journal, 2008 In this research, a variable stiffness actuator is proposed to enhance the damping of the mechanical vibrating system. The frequency response analysis of the vibrating system is dependant in order to analyze and synthesis this semi-active damping, where ...
Yarub Omer Naji Al-Azzawi
doaj
A capacity coordination strategy for converters integrated with active damping functionality
Zhejiang dianliThe active damping device mitigates resonance among multiple converters by creating a virtual resistance. To address the capacity coordination challenge between conventional grid-connected functionality and active damping functionality， an adaptive ...
ZHANG Kejia +4 more
doaj +1 more source