Results 71 to 80 of about 5,173 (291)
Reduced Graphene Oxide Transparent Electrodes Enabling Compact Soft Tunable Lenses
Advanced Functional Materials, EarlyView.By spray‐coating an elastomeric membrane with reduced graphene oxide (rGO) at various surface densities, elastomeric actuators are manufactured. Electro‐mechano‐optical characterizations show the suitability of rGO as an effective material for compliant, semi‐transparent electrodes, enabling soft electrically tunable lenses with a compact form factor ...
Giacomo Sasso +4 more
wiley +1 more source
Analysis and Research of DC-link Ripple Current
机车电传动, 2016 Temperature rise of the capacitor played the key role for the DC-link capacitor life and using stability, while thetemperature rise depended on the ripple current.
WANG Shiping +4 more
doaj
IET Electric Power ApplicationsThe authors propose a current fluctuation reduction strategy based on optimal three‐space‐vector pulse‐width modulation (TSVPWM), which is used to improve the service‐life of the dc‐link electrolytic capacitors in two‐level three‐phase voltage‐source ...
Peihe Li +4 more
doaj +1 more source
IEEE AccessIn order to suppress the influence of the DC-link ripples in the multilevel inverters, a compensate-control combination method for the Packed U-cell (PUC) multilevel inverter to suppress DC-link ripples is proposed in this paper.
Liye Song +3 more
doaj +1 more source
Fault Diagnosis of DC Link Electrolytic Capacitors in Inverter
The Transactions of the Korean Institute of Power Electronics, 2013 Electrolytic capacitors used for smoothing DC link voltage is one of the major root causes of fault in power electronic system. The aging of aluminum electrolytic capacitors is expressed by the increase of their equivalent series resistance (ESR) and the reduction of their capacitance.
openaire +2 more sources
Instantaneous thermal modeling of the DC-link capacitor in PhotoVoltaic systems [PDF]
, 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
Impedance Reshaping for Inherent Harmonics in PMSM Drives With Small DC-Link Capacitor
, 2022 Sharp LC resonance peak may enlarge inherent harmonics, dominant harmonics of the supply voltage generated by a three-phase diode rectifier, around the resonance frequency, which will intensify fluctuations of the DC-link voltage and grid currents in ...
Ren, Zekun +6 more
core +1 more source
Conformal Metallosaccharide Hybrid Films for Protecting Wood Surfaces From Environmental Damage
Advanced 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
Analysis and design of DC-link capacitor in cascaded H-bridge multilevel active front-end converter
, 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
Time‐Resolved Magnetization Switching Dynamics Driven by Orbital Torques
Advanced Functional Materials, EarlyView.Du et al. reveal nanosecond magnetization switching driven by orbital currents using time‐resolved Hall detection. The measurements separate domain nucleation from domain wall propagation and show that Joule heating strongly assists switching by lowering energy barriers.
Ao Du +4 more
wiley +1 more source