Results 71 to 80 of about 842,734 (293)
Analysis of symmetrical components of harmonics for three phase power systems [PDF]
, 1986 Includes bibliographical references.Harmonic distortion of three phase power systems is caused by large amounts of electric power consumers using power electronic installations (e.g. drives and rectifiers). It has a number of undesirable consequences and
Shum, Kwan Leung
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Ultra‐Thin Tow‐Based Discontinuous Composites—Material Overview and Aspirations
Advanced Functional Materials, EarlyView.Tow‐based discontinuous composites made from ultra‐thin tapes offer outstanding in‐plane mechanical properties. This material, inspired by Nacre, has high volume fraction of tapes exceeding 90 % and allows for quasi‐isotropic material plates less than 100 micrometer in thickness.
Ioannis Katsivalis +8 more
wiley +1 more source
EnergiesModular multilevel converter (MMC)-based HVDC systems have become one promising way to integrate a large amount of renewable energy. However, the high-frequency harmonics problem could seriously affect the safety and stable operation level of MMC-HVDCs ...
Qing Huai +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A novel nonlinear infrasound sensor concept based on a free‐standing ion conductive gel membrane is introduced. Acoustic signals are directly transduced into an electrical signal using an internal application mechanisms (gating). The nonlinearity might be used for neuromorphic in‐sensor computing. ABSTRACT Measuring low‐frequency or infrasound acoustic
Maarten Mittmann +6 more
wiley +1 more source
Performance Analysis of Phase Controlled Unidirectional and Bidirectional AC Voltage Controllers [PDF]
Mehran University Research Journal of Engineering and Technology, 2011 AC voltage controllers are used to vary the output ac voltage from a fixed ac input source. They are also commonly called ac voltage regulators or ac choppers.
Abdul Sattar Larik +2 more
doaj
Harmonics of Rectified Voltage 12-pulsation Rectifier [PDF]
, 2003 Предложен приближенный метод расчета гармоник выпрямленного напряжения многопульсовых выпрямителей.В статті запропонований наближений метод розрахунку гармонік випрямленої напруги багатопульсових випрямлячів.In article approximate account method of ...
В.Е. Пустоваров +7 more
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, 2016 16th International Conference on Environment and Electrical Engineering, EEEIC 2016 --7 June 2016 through 10 June 2016 -- --The most severe power quality problems are known as voltage sag, swell and harmonics. Series connected custom power device called
Buyuk M. +5 more
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Efficient Magnetization Switching Driven by Orbital Torque in Light 3d Transition‐Metal Nitrides
Advanced Functional Materials, EarlyView.Efficient magnetization switching is demonstrated through orbital torque generated from light 3d transition‐metal nitride. Transition‐metal nitrides are established as effective sources of orbital angular momentum for current‐induced switching, highlighting their potential for low‐power next‐generation orbitronic devices beyond conventional heavy‐metal‐
Gaurav K. Shukla +3 more
wiley +1 more source
Five-level selective harmonic elimination PWM strategies and multicarrier phase-shifted sinusoidal PWM: A comparison [PDF]
, 2005 The multicarrier phase-shifted sinusoidal pulse-width modulation (MPS-SPWM) technique is well-known for its important advantage of offering an increased overall bandwidth as the number of carriers multiplied with their equal frequency directly controls ...
Cossar, C. +3 more
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An Overlooked Transport Mechanism in Organic Mixed Conductors
Advanced Functional Materials, EarlyView.Electrical transport in organic mixed ionic‐electronic conductors is commonly described by ionic and electronic conduction. Here, eumelanin reveals that polarization‐assisted displacement currents constitute an additional transport component that coexists with conductive transport.
Natan L. Nozella +5 more
wiley +1 more source