Results 31 to 40 of about 1,578,109 (354)

Mitigation of supply voltage disturbances with a load voltage-controlled inverter

open access: yesEngineering and Applied Science Research, 2021
The three-phase four-wire Voltage Controlled Voltage Source Inverter (VC-VSI) is proposed as a multi-function voltage compensator for supply voltage disturbances to improve the load voltage quality.
Hanny H. Tumbelaka
doaj   +1 more source

Unbalanced load flow with hybrid wavelet transform and support vector machine based Error-Correcting Output Codes for power quality disturbances classification including wind energy [PDF]

open access: yes, 2019
Purpose. The most common methods to designa multiclass classification consist to determine a set of binary classifiers and to combine them. In this paper support vector machine with Error-Correcting Output Codes (ECOC-SVM) classifier is proposed to ...
Bouktir, Tarek   +2 more
core   +3 more sources

AC voltage sag-swell compensator based on unified non-inverting and inverting output voltage AC chopper [PDF]

open access: yes, 2016
This paper proposes a unified AC chopper topology that can generate both non-inverting and inverting AC voltages. It is therefore suitable for compensating utility voltage sag-swell in domestic consumer and industry infeeds.
Holliday, D., Li, Peng, Williams, B. W.
core   +1 more source

Detection and Classification of Power Quality Disturbances in Power System Using Modified-Combination between the Stockwell Transform and Decision Tree Methods

open access: yesEnergies, 2020
The detection, mitigation, and classification of power quality (PQ) disturbances have been issues of interest in the power system field. This paper proposes an approach to detect and classify various types of PQ disturbances based on the Stockwell ...
Ngo Minh Khoa, Le Van Dai
doaj   +1 more source

Simple, fast detector for voltage dip or voltage swell

open access: yesElectronics Letters, 2007
A simple, fast detection scheme for voltage dip and voltage swell is presented. Applying a simple relay and lowpass filter to the supply voltage signal, an in-phase fixed magnitude reference signal with very low total harmonic distortion can be generated.
K.M. Tsang, W.L. Chan
openaire   +1 more source

A Decision Tree and S-Transform Based Approach for Power Quality Disturbances Classification [PDF]

open access: yes, 2013
In this paper, it is presented an automated classification based on S-transform as feature extraction tool and Decision Tree as algorithm classifier. The signals generated according to mathematical models, including complex disturbances, have been used ...
Aguado-Sanchez, Jose Antonio   +5 more
core   +1 more source

Compansation of Electrical Voltage in Distribution System by Dynamic Voltage Restorer

open access: yesJAREE (Journal on Advanced Research in Electrical Engineering), 2019
Electrical ac power systems consist of generation systems, transmission and distribution networks. The large three phase industrial loads at various distribution and transmission voltages as well as single-phase residential and commercial loads are ...
Soe Soe Ei Aung, May Phone Thit
doaj   +1 more source

Control of transformerless T-type DVR using multiple delayed signal cancellation PLL under unbalanced and distorted grid condition

open access: yesEngineering Science and Technology, an International Journal, 2021
In the near future, the power system network may experience severe voltage distortions due to association of renewable energy sources (RES), and the large penetration of power electronic based loads into the microgrid.
Kodari Rajkumar   +2 more
doaj   +1 more source

Optimized complex power quality classifier using one vs. rest support vector machine [PDF]

open access: yes, 2017
Nowadays, power quality issues are becoming a significant research topic because of the increasing inclusion of very sensitive devices and considerable renewable energy sources.
Bhowmik, Sudipto   +2 more
core   +1 more source

Development of Generalised Integrator with a Feedback Loop Based Dynamic Voltage Restorer for Fast Mitigation of Voltage Sag/Swell

open access: yesCovenant Journal of Engineering Technology, 2023
Power-electronic converter-based device called the Dynamic Voltage Restorer (DVR) is intended to shield delicate loads from supply-side voltage perturbations. It is connected in series to the distribution feeder and has the ability to generate or absorb
Ibrahim Baba   +4 more
doaj  

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