Results 31 to 40 of about 966 (288)

Van der Waals negative capacitance transistors

open access: yesNature Communications, 2019
The adaptation to atomically thin 2D semiconductors and van der Waals layered ferroelectrics can enable negative capacitance transistors with superior performance and bendability.
Xiaowei Wang   +14 more
doaj   +1 more source

Three-level GaN inverter with SiC diodes for a possible three-phase high power solution

open access: yesThe Journal of Engineering, 2019
GaN device is a potential alternative to SiC as a wide band gap device. At present, there are almost no high-voltage GaN devices above 650 V, which makes an inverter design difficult for three-phase input using the standard two-level (2L) inverters ...
F. Aguilar Vega   +4 more
doaj   +1 more source

Tunnel-diode invertor

open access: yesElectronics Letters, 1967
A modification of the conventional tunnel-diode monostable circuit which gives an output signal of reversed polarity with respect to the polarity of the input is described. The circuit is simple and reliable and employs one tunnel diode only.
G. Manuzio, L. Racca
openaire   +1 more source

Sensorless control of PMSM using an adaptively tuned SCKF

open access: yesThe Journal of Engineering, 2019
This study reports the application of an adaptively tuned square-root Cubature Kalman filter (SCKF) for the speed and position estimation of a permanent magnet synchronous motor (PMSM) drive.
Gulur Raghavendra Gopinath   +1 more
doaj   +1 more source

Closed-loop control of a single-stage switched-boost inverter in modified DC-interconnected nanogrids

open access: yesThe Journal of Engineering, 2020
Switched-boost inverter (SBI) is a single-stage power converter suitable for interfacing between photovoltaic (PV) arrays and loads. Although, it has many advantages such as it's not requiring an expensive complex dead-time circuitry, yet its duty ratio ...
Nourhan Ahmed Maged   +3 more
doaj   +1 more source

Open‐circuit fault‐tolerant operation of permanent magnet synchronous generator drives for wind turbine systems using a computationally efficient model predictive current control

open access: yesIET Electric Power Applications, 2021
Model predictive fault‐tolerant current control (MPFTCC) of permanent magnet synchronous generator (PMSG) drives can make a valuable contribution to improving the reliability and availability levels of wind turbines, because back‐to‐back (BTB) converters
Imed Jlassi, Antonio J. Marques Cardoso
doaj   +1 more source

Modelling and vector control of dual three‐phase PMSM with one‐phase open

open access: yesIET Electric Power Applications, 2021
This study proposes a generic mathematical modelling and decoupling fault‐tolerant vector control for dual three‐phase permanent magnet synchronous machine (PMSM) with one phase open based on the conventional dual three‐phase voltage source inverters ...
Yashan Hu, Z. Q. Zhu, Zhan‐yuan Wu
doaj   +1 more source

Fast and accurate estimation of multifrequency signals with noise and harmonics in control of photovoltaic systems

open access: yesThe Journal of Engineering, 2019
Photovoltaic systems are the important part of the energy market in many countries around the world. Such systems contain several parts and one of them is the inverter to produce the AC signal.
Dariusz Kania, Jozef Borkowski
doaj   +1 more source

Invertor system stability analysis

open access: yesIFAC Proceedings Volumes, 1974
Summary A single phase bridge inverter system is analyzed. It is assumed that the inverter is used as a closed loop voltage regulated. source of ac power. The inverter output waveform is pulse width modulated to control the output voltage which is supplied to a general linear filter.
K.Y. Nikravesh, R.G. Hoft
openaire   +1 more source

A rotating arc plasma invertor [PDF]

open access: yes, 1987
A device is described for the inversion of direct current to alternating current. The main feature is the use of a rotating plasma arc in crossed electric and magnetic fields as a switch. This device may provide an economic alternative to other inversion methods in some circumstances.
Reusch, M. F., Jayaram, K.
openaire   +2 more sources

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