Results 11 to 20 of about 968 (290)

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

Multi-functional grid-connected inverter with enhanced disturbance rejection capability

open access: yesThe Journal of Engineering, 2019
Apart from the basic renewable generation function, the multi-functional grid-connected inverter (MFGCI) derived from traditional grid-connected inverter could provide ancillary power quality enhancement functions for the interfaced grid.
Guangyu Sun   +4 more
doaj   +1 more source

Evaluation of DC-link voltage ripple in five-phase PWM voltage source inverters

open access: yesThe Journal of Engineering, 2019
This paper presents the analysis of the DC-link voltage switching ripple in five-phase PWM voltage source inverters with balanced load. The analysis is particularly important for the design and selection of a DC-link capacitor making it possible to meet ...
M. Vujacic   +4 more
doaj   +1 more source

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

Foot Posture, Muscle Strength, Range of Motion, and Plantar Sensation in Overweight and Obese [PDF]

open access: yes, 2021
The purpose of the study was to investigate the foot posture, ankle muscle strength, range of motion (ROM), and plantar sensation differences among normal weight, overweight, and obese individuals.
Emin Ulaş Erdem   +3 more
core   +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

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