Results 81 to 90 of about 11,364,674 (354)
DC-side Harmonic Analysis of SPWM-mode Traction Inverter
机车电传动, 2016 Based on energy conservation principle, DC input harmonics current of the SPWM-mode traction inverter was deducedwith AC-side instantaneous power calculation, and harmonics frequency spectrum of DC-side current was revealed.
GAO Daoxing
doaj
Advanced Functional Materials, EarlyView.Ferroelectric nematic liquid crystals (FNLCs) offer fast, tunable polarization and low‐voltage operation but suffer from poor polarization retention at zero field. Semiconductor‐modified FNLCs enhance polarization retention and exhibit short‐ and long‐term electro‐optical responses, while also supporting spike‐type signal integrations.
Kutay Sagdic, Weiming Yao, Danqing Liu
wiley +1 more source
Analysis of Output Current Ripple of Three-phase PWM Inverter under Discontinuous Modulation Techniques [PDF]
, 2010 In this paper, an analysis of output current ripple of three-phase PWM inverters with discontinuous modulation is presented. The analytical expressions for discontinuous modulation injection signal are derived.
Dahono, Pekik Argo
core
Advanced Functional Materials, EarlyView.Sea cucumber mutable collagenous tissue (MCT) is a remarkable collagen‐based material which can rapidly undergo large changes in stiffness through transiently bound effector proteins. Here, we investigate the hierarchical structure and mechanical response of MCT from Cucumaria frondosa across length scales with a wide range of methods, also exploring ...
Nathalie R. H. Singh +7 more
wiley +1 more source
Photocurrent-induced harmonics in nanostructures
NanophotonicsPhotocurrent-induced harmonics appear in gases and solids due to tunnel ionization of electrons in strong fields and subsequent acceleration. In contrast to three-step harmonic emission, no return to the parent ions is necessary.
Babushkin Ihar +5 more
doaj +1 more source
Energies, 2018 A distorted grid voltage or nonlinear behavior in the current control loop can cause low frequency current harmonics in a grid-connected voltage source inverter (VSI).
Matthias Schiesser +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Highly luminescent chiral manganese halide crystals are synthesized using chiral ligands, and they exhibit dissymmetry factors up to 1.4 × 10−2 and show X‐ray detection scintillation capability with a light yield of 43 380 photons/MeV and a low detection limit of 0.05198 µGyair·s−1.
Yue Han +9 more
wiley +1 more source
Charge Generation and Recombination Pathways in All‐Polymer Bulk Heterojunction Solar Cells
Advanced Functional Materials, EarlyView.Multimodal spectroscopy and device analysis reveal how field‐dependent charge generation, transport limitations, and non‐geminate recombination govern performance losses in all polymer solar cells. The results identify the key processes controlling charge extraction and recombination, providing insights for the design of more efficient all‐polymer ...
Shahidul Alam +17 more
wiley +1 more source
Investigations of power quality problems in modern buildings [PDF]
, 2011 This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.This thesis presents the results of measurements made in a typical office building (Tower A) and a Residential building (Kilmorey Hall), all located in the ...
Olatoke, Abraham
core
Unipolar stitched inverter low-frequency harmonics caused by stitching delay [PDF]
, 2009 Unipolar switched single-phase inverters experience lower switching losses and generate less electro-magnetic interference (EMI) when compared with bipolar switched inverters.
Sharma, R., Ball, J. A. R.
core +1 more source