Results 271 to 280 of about 11,092 (314)
Some of the next articles are maybe not open access.
Characterization and Error Compensation of a Rogowski Coil in the Presence of Harmonics
IEEE Transactions on Instrumentation and Measurement, 2011This paper reports the results of an experimental study dealing with a commercial Rogowski coil current transducer (RCCT) in the presence of harmonic distortion. The RCCT was observed under two conditions: 1) sinusoidal excitation with frequencies from 50 to 750 Hz and 2) nonsinusoidal excitation using fundamental frequency and one harmonic, with ...
Antonio Cataliotti +4 more
openaire +3 more sources
Harmonic Power Standard at NIM and Its Compensation Algorithm
IEEE Transactions on Instrumentation and Measurement, 2008A new harmonic power standard has been developed at the National Institute of Metrology (NIM), Beijing, China, for the calibration of harmonic power analyzers under nonsinusoidal conditions at fundamental frequencies of 50 and 60 Hz. The standard is based on digital sampling techniques that do not require synchronization.
Zuliang Lu +4 more
openaire +1 more source
Research of inverter with the ability to harmonic compensation
Proceedings. International Conference on Power System Technology, 2003The paper describes the design of a high frequency current-fed type active filter as a harmonic generator for use in the DC link of an inverter to eliminate the harmonic waves generated, which can compensate the harmonics generated by converter-type loads.
null Wang Ping +2 more
openaire +1 more source
A Selective Harmonic Compensation with Current Limiting Algorithm
2019This paper addresses a control algorithm to determine the reference currents indirectly from the grid voltages, taking into account the limited capacity of the power converter for compensating, entirely, the selected harmonic current. In previous works, the reference current was indirectly determined based on an average component correlated with the ...
Nayara V. Oliveira +2 more
openaire +1 more source
Robust compensator of harmonics and reactive power
Proceedings of PESC '95 - Power Electronics Specialist Conference, 2002This paper presents a robust compensator of harmonics and reactive power for electric power systems, which consists essentially of an electronic source and a robust controller. This compensator permits us to eliminate harmonics to an acceptable level and to compensate reactive power.
Z. Yao, S. Lahaie, V. Rajagopalan
openaire +1 more source
Harmonic Acceleration Tests as a Measure of Vestibular Compensation
Annals of Otology, Rhinology & Laryngology, 1982The material presented is excerpted from patient evaluations. The study was performed with the use of the Contraves rotary chair. This testing modality was used at each patient visit. All other conventional auditory and ENG tests were also performed. These patients have been selected to illustrate the value of the harmonic acceleration (HA) test as a ...
openaire +2 more sources
Active filter for compensation of specific harmonics
1998 International Conference on Power Electronic Drives and Energy Systems for Industrial Growth, 1998. Proceedings., 2005An example of a specific harmonic is the third harmonic. In several types of equipment such as power supplies for electronic equipment, high power rectifiers and HVDC systems a relatively large third harmonic current is generated. A new method to compensate the third harmonic in a supply phase of the grid is introduced [J.B. Woudstra, et al., 1997].
J.B. Woudstra, S.W.H. de Haan
openaire +1 more source
A new approach to voltage and harmonic compensation
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555), 2002This paper presents a novel compensation scheme based on two active filters to improve power quality in distribution networks. The scheme provides voltage compensation at the load for source voltage sags, and swell, as well as minimizing the impact of the load harmonics on the distribution network.
T.A. Kandil, J.E. Quaicoe
openaire +1 more source
Harmonic analysis of systems with static compensators
IEEE Power Engineering Review, 1991Static VAr compensators with thyristor-controlled reactors generate harmonics. Due to the voltage regulation characteristics of the compensator, the generated harmonics depend on unknown thyristor firing angles and the network load flow conditions. The inclusion of load flow dependent firing angle determination in the author's computer-based multiphase
W. Xu, J.R. Marti, H.W. Dommel
openaire +1 more source