نتایج جستجو برای: thd minimization
تعداد نتایج: 34311 فیلتر نتایج به سال:
OBJECTIVE To explore predictors of the 6-month clinical outcome of thalamic hemorrhage, and evaluate if minimally invasive thalamic hematoma drainage (THD) could improve its prognosis. METHODS A total of 54 patients with spontaneous thalamic hemorrhage were evaluated retrospectively. Clinical data, including demographics, stroke risk factors, neuroimaging variables, Glasgow Coma Score (GCS) o...
INTRODUCTION Transanal haemorrhoidal dearterialisation (THD) is a novel non-excisional technique based on suture closure of the haemorrhoidal arterial flow feeding the haemorrhoidal plexus. The primary objective of this study was to report the first Danish experience with THD. METHODS The study was a single-centre, non-controlled retrospective study that comprised consecutive patients from a ...
Abstract In this work, a developed modified one sampling ahead preview (OSAP) controller with repetitive control action for single – phase voltage source PWM inverters used in (UPS) systems is proposed. The proposed technique minimizes largely the plant modeling errors resulted from simplification made to obtain a linear discrete time plant model. In addition, due to the repetitive control acti...
This paper presents a new method to optimize locating and the size of fixed and switching capacitor banks based on Gravitational Search Algorithm (GSA). The algorithm is proposed for radial and meshed networks in the presence of unbalanced and nonlinear loads. The objective function considers the minimization of the total energy loss costs and capacitor installation cost, network total harmonic...
Cascaded H-Bridge multilevel inverter is a promising topology and provides alternative way for converters that are used in grid connected photovoltaic, wind power generation and in motor drive. Output power can be expanded simply with modularity and control. Though it has wide application area and tremendous merits, it has greater disadvantage that it uses separate DC supply for each HBridge. C...
The time-of-flight mass spectra of tris(2,2,6,6-tetramethyl-3,5-heptanedionato) lanthanide(III) [or Ln(thd)3 with Ln = Eu, Tb, Gd] produced by laser-induced multiphoton ionization in a supersonic expansion were studied as a function of laser excitation wavelength. Resonance-enhanced multiphoton ionization (REMPI), monitoring the Eu(I) ion signal from gas-phase Eu(thd)3, was observed in three di...
Multilevel Converters are known to have many advantages for electricity network applications. In particular Cascaded H-Bridge Converters are attractive because of their inherent modularity and scalability. Predictive control for power converters is advantageous as a result of its applicability to discrete system and fast response. In this paper a novel control technique, named Modulated Model P...
The current scenario of the world is that the power demand in the world is increasing at a very fast rate, to get an economical source of power; renewable energy sources are proving out to be a reliable option. Hence solar energy systems are very much important for the system engineers. In order to meet the demand of the world the solar energy is injected into the electric power grid. Along wit...
This paper corroborates three different hybrid modulation strategies suitable for single-phase voltage source inverter. The proposed method is formulated using fundamental switching and carrier based pulse width modulation methods. The main tale of this proposed method is to optimize a specific performance criterion, such as minimization of the total harmonic distortion (THD), lower order harmo...
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