Results 21 to 30 of about 448,431 (274)

Analysis and mitigation of dead time harmonics in the single-phase full-bridge PWM converters with repetitive controllers [PDF]

open access: yes, 2018
In order to prevent the power switching devices (e.g., the Insulated-Gate-Bipolar-Transistor, IGBT) from shoot through in voltage source converters during a switching period, the dead time is added either in the hardware driver circuits of the IGBTs or ...
Blaabjerg, Frede   +3 more
core   +2 more sources

Power Quality Improvement using Parallel Connected FACTS Device with Simplified d-q Control

open access: yesEAI Endorsed Transactions on Energy Web, 2022
INTRODUCTION: Distribution network is mainly affected by the end user load nature. Ruinous influence on power system operation based on the type of load used by the end user and due to the presence of non-linear loads causes Harmonics in power system ...
N. Rajesh   +2 more
doaj   +1 more source

Power Quality Improvement Using Dynamic Voltage Restorer

open access: yesIEEE Access, 2020
Power Quality is an essential concern in the modern power system that can affect consumers and utility. The integration of renewable energy sources, smart grid systems and extensive use of power electronics equipment caused myriad problems in the modern ...
Naeem Abas   +4 more
doaj   +1 more source

Investigation on the Effect of Imbalance and Non-Linear Load on 11 kV Pama Feeder [PDF]

open access: yesPhysics Access, 2022
In this research the effect of imbalance and nonlinear load on power quality was investigated via the electronic method with the aid of a Fluke 435 power quality analyser and the results obtained compared with IEEE standards. The study was carried out on
Daniel C Bamaiyi   +4 more
doaj   +1 more source

Smooth approximation of data on the sphere with splines [PDF]

open access: yes, 1987
A computable function, defined over the sphere, is constructed, which is of classC1 at least and which approximates a given set of data. The construction is based upon tensor product spline basisfunctions, while at the poles of the spherical system of ...
Traas, C.R.
core   +2 more sources

Comparative Case Study on Oscillatory Behavior in Power Systems of Marine Vessels With High Power Converters

open access: yesFrontiers in Energy Research, 2021
The chief aim of the proposed paper is to compare the behavior of supply voltage registered onboard three vessels equipped with high power converters during normal operation.
Tomasz Tarasiuk   +5 more
doaj   +1 more source

A three dimensional finite element model of wind effects upon higher harmonics of the internal tide. [PDF]

open access: yes, 2007
A non-linear three dimensional unstructured grid model of the M2 tide in the shelf edge area off the west coast of Scotland is used to examine the spatial distribution of the M2 internal tide and its higher harmonics in the region.
Davies, A. M., Hall, P.
core   +2 more sources

Harmonic mitigation potential of shunt harmonic impedances [PDF]

open access: yesElectric Power Systems Research, 2003
Abstract Although complete compensation is only possible using true active filters, shunt harmonic impedances (SHI) have been shown to provide a considerable reduction of the harmonic propagation. In this paper, the mitigation potential of different SHI is investigated, together with their VA-rating. It is shown that a resistive impedance of 1 pu for
Ryckaert, Wouter   +2 more
openaire   +2 more sources

Research and Application of Medium Voltage Drive System in Multi-stand Hot Continuous Rolling Finishing Mill

open access: yesKongzhi Yu Xinxi Jishu, 2022
Main drive system of multi-stand hot continuous rolling finishing mill has the characteristics of rapid loading and unloading, frequent acceleration and deceleration, multi-stand coupling and mutual interference, and has high requirements for the ...
NAN Yonghui   +5 more
doaj  

Pure Even Harmonic Generation from Oriented CO in Linearly Polarized Laser Fields

open access: yes, 2017
The first high harmonic spectrum, containing only the odd orders, was observed in experiments 30 years ago (1987). However, a spectrum containing pure even harmonics has never been observed.
Hu, Hongtao   +4 more
core   +1 more source

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