Results 1 to 10 of about 2,447,398 (221)

Solar Powered Unmanned Aerial Vehicle With Active Output Filter Under Non-Linear Load Conditions

open access: yesIEEE Access, 2021
This paper presents a new electric powertrain for solar powered unmanned aerial vehicle (UAV). The proposed system structure is based on the development of the power supply system for both the Solong and Zyphyr aircraft models.
Nabil A. Ahmed, Fahad M. Alhuwaishel
doaj   +2 more sources

Non-linear Electrical Load Location Identification

open access: yesЗаписки Горного института, 2019
The article discusses the issues of identifying the location of non-linear loads in electrical networks which makes the main contribution to the distortion of the non-sinusoidal voltage and current in the distribution network of an industrial enterprise,
S. Pirog   +2 more
doaj   +3 more sources

Experimental assessment of harmonic contributions using a ternary pulse sequence [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2021
Harmonic contributions of utility and customer may feature significant variations due to network switchings and changing operational modes. In order to correctly define the impacts on the grid voltage distortion the frequency dependent impedance
Bulycheva Evgeniia, Yanchenko Sergey
doaj   +1 more source

Real-time harmonic identification under varying grid conditions [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2021
One of the challenges of the power quality management is a need for reliable harmonic identification in grids with multiple non-linear loads. This paper proposes a novel method to accurately determine time-varying harmonic contributions of non ...
Bulycheva Evgeniia A.   +1 more
doaj   +1 more source

A four-line active shunt filter to enhance the power quality in a microgrid

open access: yesInternational Journal of Renewable Energy Development, 2023
In recent years, power quality has become a major concern for electric network managers. Active filtering control schemes ensure improved power quality of the electric network and are able to maintain a desired voltage level at the point of connection ...
Abdelkader Mostefa   +4 more
doaj   +1 more source

Forecasting Electricity Load With Hybrid Scalable Model Based on Stacked Non Linear Residual Approach

open access: yesFrontiers in Energy Research, 2021
Power has totally different attributes than other material commodities as electrical energy stockpiling is a costly phenomenon. Since it should be generated when demanded, it is necessary to forecast its demand accurately and efficiently.
Ayush Sinha   +4 more
doaj   +1 more source

Technical Limits of Passivity-Based Control Gains for a Single-Phase Voltage Source Inverter

open access: yesEnergies, 2021
Passivity-based control (PBC) seems to be predicted for the control algorithms in the voltage source inverters (VSI) for voltage backup systems. This paper presents limitations of the improved (IPBC) version of the PBC (directly measuring the output ...
Zbigniew Rymarski, Krzysztof Bernacki
doaj   +1 more source

Switchable Capacitor Bank Coordination and Dynamic Network Reconfiguration for Improving Operation of Distribution Network Integrated with Renewable Energy Resources

open access: yesJournal of Modern Power Systems and Clean Energy, 2022
Point of common coupling (PCC) arrays are the most prominent and widely-used intermittent distributed generations (DGs). Due to the right-of-way, environmental, economical and other restrictions, the connection of these types of DGs to the preferred ...
Ramin Borjali Navesi   +3 more
doaj   +1 more source

Sensorless AC Capacitor Voltage Monitoring Method for HAPF

open access: yesIEEE Access, 2023
This study presents a method for monitoring the voltage across the AC capacitor in a grid-connected hybrid active power filter without the use of additional voltage sensors. In the case of an AC capacitor used in a hybrid, active power filter, there is a
Hyunjae Lee, Jingeun Shon
doaj   +1 more source

Research on thrust vector control of nonlinear solid rocket motor nozzle based on active disturbance rejection technology [PDF]

open access: yesMATEC Web of Conferences, 2020
In this paper, based on the auto disturbance rejection control technology, the electromechanical servo system is used as the control actuator, and the thrust vector control of the solid rocket motor nozzle with typical nonlinear friction characteristics ...
Shi Chenhong, Yang Jinpeng, Xu Zhishu
doaj   +1 more source

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