Results 31 to 40 of about 92,087 (221)

Two-level DPC strategy based on FNN algorithm of DFIG-DRWT systems using two-level hysteresis controllers for reactive and active powers [PDF]

Renewable Energy Research and Applications, 2021
In this paper, a novel switching table (ST) of the twelve sectors direct power command (DPC) strategy of doubly-fed induction generator (DFIG) based dual rotor wind power (DRWP) is proposed using two-level hysteresis controllers for reactive and active ...
H. Benbouhenni
doaj   +1 more source

Interpretation of partial discharge activity in the presence of harmonics [PDF]

, 2010
Recent work has identified that circumstances of equipment operation can radically change condition monitoring data. This contribution investigates the significance of considering circumstance monitoring on the diagnostic interpretation of such condition
Bahadoorsingh, S., Catterson, V.M., McArthur, S.D.J., Rowland, S.M., Rudd, S.E.   +4 more
core   +1 more source

Power flow analysis and control of distributed FACTS devices in power system [PDF]

Archives of Electrical Engineering, 2018
The deployment of a distributed power-flow controller (DPFC) in a single-machine infinite-bus power system with two parallel transmission lines are considered for the analysis in this paper.
Vikash Anan, Sanjeev Kumar Mallik
doaj   +1 more source

Power quality enhancement in asymmetrical cascaded multilevel inverter using modified carrier level shifted pulse width modulation approach

IET Power Electronics, EarlyView., 2022
New modified carrier‐based level shifted pulse width modulation approaches for single‐phase trinary dc source fed cascaded H‐bridge inverters are proposed in this article. In order to suppress the lower order harmonics, the carrier frequency is often tuned higher. However, switching and electromagnetic interference problems have a significant influence
Arun Vijayakumar, Albert Alexander Stonier, Geno Peter, Ashok Kumar Loganathan, Vivekananda Ganji   +4 more
wiley   +1 more source

THD and mucopexy: Efficacy and controversy

Annals of Medicine & Surgery, 2017
Transanal haemorrhoidal dearterialisation and mucopexy has evolved in recent years as a popular minimally invasive non-excisional surgery for symptomatic prolapsing haemorrhoids. The long-term outcome of this procedure however, remains to be established.
Abudeeb, Haytham, Ugwu, Ajogwu, Darabnia, Jamshid, Hammad, Ahmed, Khan, Khurram, Maung, Min, McNulty, Elizabeth, Khan, Abdul Latif, Mukherjee, Arijit   +8 more
openaire   +2 more sources

Power loss investigation in HVDC for cascaded H-bridge multilevel inverters (CHB-MLI) [PDF]

, 2015
In the last decade, the use of voltage-source multilevel inverters in industrial and utility power applications has been increased significantly mainly due to the many advantages of multilevel inverters, compared to conventional two level inverters ...
Alamri, B, Darwish, M
core   +1 more source

Three-phase Active Tracking AC-AC Voltage Regulator based on Buck Converter with an Efficient Hybrid Control Technique

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2022
This study proposes a switch-mode three-phase active tracking AC-AC voltage regulator based on the buck converter. The regulator topology incorporates a moderate number of components with less complexity and high efficiency.
Faruk Yalçın, Felix Hımmelstoss
doaj   +1 more source

THD Analysis in Closed-Loop Analog PWM Class-D Amplifiers [PDF]

Journal of Electrical and Computer Engineering Innovations, 2014
In this paper, we investigate the parameters affecting Total Harmonic Distortion (THD) and Power Supply Rejection Ratio (PSRR) in PWM Class D Amplifiers (CDAs) on the basis of linear models with feedback.
P. Amiri, M. Kohestani, M. Seifouri
doaj   +1 more source

Special conditions in the treatment of hemorrhoidal disease. The advantages of THD-RAR in the treatment of hemorrhoidal disease in these situations [PDF]

Romanian Medical Journal, 2020
Introduction. The prevalence of hemorrhoids in the general population ranks first among benign anorectal diseases. In the last 20 years, however, the number of cases operated for hemorrhoidal disease has decreased and consequently the experience of ...
Romica Mehic, Veronica Indreica, Vasilica Marcu, Mircea Beuran, Alexandru Laurentiu Chiotoroiu   +4 more
doaj   +1 more source

Engineering Metastability in Atomic Layer Deposition: Polymorph and Valence Control. [PDF]

Small
This work presents strategies for stabilizing two types of metastable phases: structural polymorphs and multivalence states via ALD. These approaches focus on lowering the energy barriers required for metastable phase formation, enabling access to metastable states beyond the thermodynamic limits imposed by the low‐temperature conditions of ALD.
Jeon J, Ryu SH, Ye S, Park GM, Kim SK.
europepmc   +2 more sources