Results 261 to 270 of about 89,369 (307)

Detection of voltage flicker and voltage harmonic using Hilbert Huang Transform

2014 16th International Power Electronics and Motion Control Conference and Exposition, 2014
16th International Power Electronics and Motion Control Conference and Exposition (PEMC) -- SEP 21-24, 2014 -- Antalya ...
Onal, Yasemin, Gerek, Omer Nezih, Ece, Dogan Gokhan   +2 more
openaire   +3 more sources

A shunt active harmonic filter based on a voltage detection method for harmonic voltage control

2004 IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies. Proceedings, 2004
With the proliferation of electronic equipment in modern buildings, harmonics in low voltage distribution systems have received a great deal of attention. This paper discusses harmonic voltage control using a shunt active harmonic filter based on a voltage detection method. The control method is discussed first.
Z.H. Yuan, Y. Du
openaire   +1 more source

Six-pulse converter atypical harmonics caused by second harmonic voltage

10th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.02EX630), 2004
This paper reports the orders and levels of atypical harmonics caused by the second harmonic voltage. Two basic types of 6-pulse converters are discussed: The L-filter (current source rectifier) and the C-filter (voltage source rectifier). The response of these converters to symmetrical nonsinusoidal voltage distorted by positive- and negative-sequence
A.E. Emanuel, J.A. Orr
openaire   +1 more source

Superposition of current and voltage harmonics

2018 ELEKTRO, 2018
This paper deals with power quality that is aimed on voltage and current harmonics. The analysis describes the household appliances producing the harmonic interference, because they consist of semiconductor components. The next reason is that a large number of household appliances are operated in the same time.
Andrej Bolf, Alena Otcenasova, Michal Regula, Marek Novak   +3 more
openaire   +1 more source

Harmonics in voltage-source PWM inverters

International Journal of Electronics, 1981
he performance of an induction motor fed by PWM inverters is mainly determined by the harmonic contents of the output voltage. This paper presents a method of numerically calculating the harmonics in the output voltage waveform. Equal pulse-width modulation and siunsoidal PWM are studied.
Rajashekara, KS, Vithayathil, Joseph
openaire   +2 more sources

Harmonic study in electromagnetic voltage transformers

2012 IEEE International Symposium on Industrial Electronics, 2012
Ferroresonance is a complex electrical phenomenon which may cause overvoltages and overcurrents in electrical power system disturbing the system reliability and continuous safe operating. The ability to predict or confirm ferroresonance depends primarily on the accuracy of the voltage transformer model used in the computer simulation. In this study, at
Hamid Radmanesh, S.H. Hosseinian, S.H. Fathi   +2 more
openaire   +1 more source

Instantaneous line voltage controlled harmonics compensator

2000 26th Annual Conference of the IEEE Industrial Electronics Society. IECON 2000. 2000 IEEE International Conference on Industrial Electronics, Control and Instrumentation. 21st Century Technologies and Industrial Opportunities (Cat. No.00CH37141), 2002
We propose a line voltage harmonic compensator for the distribution line voltage distortion and the nonlinear load harmonic current by using a simple shunt active filter with series inductances. The instantaneous terminal voltages of the common supply line are controlled to the sinusoidal waveforms by the instantaneous compensation current.
T. Ohnishi, M. Hojo, N. Matsui
openaire   +1 more source

High voltage passive harmonic filter design

The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011, 2011
This paper presents a developed graphic user interface (GUI)-based program for high-voltage passive harmonic filter design. The developed program composes of four modules: load flow analysis, harmonic analysis, passive harmonic filter design, and capacitor bank design.
Jakkapong Tupsa-ard, Chaiya Chamchoy, Thavatchai Tayjasanant   +2 more
openaire   +1 more source

Voltage and current harmonics caused by corona

Journal of the American Institute of Electrical Engineers, 1921
THE FOLLOWING investigation was made to study the effects of corona in producing voltage and current harmonics in transmission systems. In the early work on corona in 1910 a very complete oscillographic study was made of voltage and current. It was found that the current wave of corona loss very much resembled the excitation current wave of a ...
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Boundary control of dynamic voltage restorers in voltage harmonic compensation

2006 37th IEEE Power Electronics Specialists Conference, 2006
Dynamic voltage restorer (DVR) is used to provide load voltage support and protect sensitive load during voltage sags situation. However, voltage sags do not appear frequently and hence the utilization of the DVR is low. In order to increase the utilization of the DVR, the DVR should operate to compensate any load voltage instability especially the ...
Chung, HSH, Hui, SYR, Chan, PKW
openaire   +2 more sources