Results 171 to 180 of about 7,378,396 (205)

Reduction of Line-Current Total Harmonic Distortion (THD) of a Valley Fill Electronic Ballast

2011 International Conference on Electronic Devices, Systems and Applications (ICEDSA), 2011
This paper presents a modified Valley-Fill (VF) ballast circuit to combine with a current fed resonant inverter as the power circuit for a high power factor VF electronic ballast. The original VF circuit permit input current conduction from 30° to 150°, and then from 210° to 330°.
M Ziaur Rahman Khan
exaly   +2 more sources

[2_TD$DIFF]Total Harmonic Distortion (THD) based discrimination of normal, inrush and fault conditions in power transformer

Renewable Energy Focus, 2021
The non linear characteristic of transformer magnetizing core leads more current/voltage signal distortion in the event of system disturbance/fault. The harmonic penetration in the current signal depends of the transformer core, characteristic of load and abnormal conditions.
Maulik Raichura, Nilesh Chothani, Dharmesh Patel, Khyati Mistry   +3 more
openaire   +1 more source

Predicting total harmonic distortion (THD) in ADSL transformers using behavioural modeling

Proceedings of the 2003 IEEE International Workshop on Behavioral Modeling and Simulation, 2004
As a design application, the ADSL broadband line transformer offers interesting challenges somewhat different to those in power supply design. The aspect of total harmonic distortion (THD) as affected by the nonlinear behaviour of the magnetic material in a line transformer is analysed using simulation.
P.R. Wilson, J.N. Ross, A.D. Brown
openaire   +1 more source

Analysis on the Effect of Capacitor Banks Operation Towards Total Harmonic Distortions (THD) in Distribution Network Test System

Journal of Energy and Safety Technology (JEST), 2018
This paper purposely to examine and analyse the impact of the distribution capacitors banks operation to the transition of total harmonic distortion (THD) level in distribution network system. The main advantage of this work is the simplicity algorithm of the method and the system being analysed using free access open software which is known as ...
Dalila M.S., Zaris I.M.Y., Nasarudin A., Faridah H.   +3 more
exaly   +3 more sources

A Cost Effective Method of Reducing Total Harmonic Distortion (THD) in Single-Phase Boost Rectifier

2007 7th International Conference on Power Electronics and Drive Systems, 2007
Due to its simplicity, the discontinuous conduction mode boost rectifier is potentially the least expensive active line-harmonics reducing circuit. The line current however, shows considerable distortion when the peak input voltage is close to the output voltage. This paper proposes a simple, low-cost method to reduce the line harmonics.
Hussain S. Athab, P. K. Shadhu Khan
openaire   +1 more source

Impact of Grid Connected Photovoltaic System on Total Harmonics Distortion (THD) of Low Voltage Distribution Network: A Case Study

2018 Twentieth International Middle East Power Systems Conference (MEPCON), 2018
Integrating renewable energy resources especially photovoltaic systems with microgrids has become an unavoidable choice for most countries and in Egypt the government has this ambition to reach a percentage of 20% of the total national electricity generation from solar energy. Which in turn bring some challenge to the electrical utility operator.
Walaa Ibrahim Gabr
exaly   +2 more sources

A Multilevel PV Inverter Control With Minimal Total Harmonic Distortion (THD)

In this article, we have improved the control of the multilevel inverter for a photovoltaic system connected to the grid, in order to minimize the total harmonic distortion of current. This topology being considered as a new converter topology applied to photovoltaic systems and has the advantage of very high-energy efficiency, but has the disadvantage
Lamreoua Abdelhak, Benslimane Anas, Bouchnaif Jamal, Hirech Kamal, El Ouariachi Mostafa   +4 more
openaire   +1 more source

RETRACTED: Nonlinear Transformational Optimization (NTO) technique based Total Harmonics Distortion (THD) reduction of line to line voltage for multi-level inverters

Microprocessors and Microsystems, 2020
Abstract Multilevel inverter, switching points at the essential frequency are gained by measuring the total harmonics distortion (THD) in line – line voltage. In this work, an advancement procedure is proposed to register switching angles at basic frequency switching plan by implementing Nonlinear Transformational Optimization (NTO) technique, a like
R. Gunasekaran, C. Karthikeyan
openaire   +1 more source

Single phase transformerless semi-Z-source inverter with reduced total harmonic distortion (THD) and DC current injection

2013 IEEE ECCE Asia Downunder, 2013
A single phase transformerless semi-Z-source inverter topology is presented in this paper in order to incorporate distributed photovoltaic generators to the grid with reduced total harmonic distortion (THD) and DC current injection. These proposed inverter topologies are capable of achieving the sinusoidal output voltage by using only two active ...
Tofael Ahmed, Saad Mekhilef, Mutsuo Nakaoka   +2 more
openaire   +1 more source

Design and Implementation of SVPWM Inverter to Reduce Total Harmonic Distortion (THD) on Three Phase Induction Motor Speed Regulation Using Constant V/F

2020 3rd International Seminar on Research of Information Technology and Intelligent Systems (ISRITI), 2020
The electric motor has replaced motor fuel as the main mover of the equipment. One of them is the use of a three-phase induction motor in the industrial sector. Equipment in an industry requires many speed controllers in operation. The induction motor speed can be changed by changing the number of poles, changing the stator voltage, and changing the ...
Arif Sudaryanto, Era Purwanto, Indra Ferdiansyah, Syechu Dwitya Nugraha, Ony Asrarul Qudsi, Mochammad Machmud Rifadil, Muhammad Rizani Rusli   +6 more
openaire   +1 more source