Electrical Engineering: المرسلات الحديثة
السجلات المعروضة 1 -- 20 من 2464
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Effects of harmonic distortion on the active and reactive power measurements in the time domain: A single phase system
( IEEE Computer Society , 2001 , Conference Paper)A new application of the least error squares (LES) estimation algorithm is given for identifying, in the time domain, the active and reactive power from available samples of voltage and current waveforms. The digital ... -
Frequency and harmonics evaluation in power networks using fuzzy regression technique
( IEEE Computer Society , 2001 , Conference Paper)A new technique for frequency and harmonic evaluation in power networks is proposed in this paper. This technique is based on fuzzy linear regression and uses the digitized voltage samples, which are fuzzy numbers, to ... -
Fuzzy linear parameter estimation algorithms: A new formulation
( Elsevier , 2002 , Article)In this paper, we present a new formulation of a fuzzy linear estimation problem as one of the linear programming where the objective is to minimize the spread of the data points, subject to constraints on each measurement ... -
Frequency and harmonics evaluation in power networks using fuzzy regression technique
( Elsevier , 2003 , Article)A new technique for frequency and harmonic evaluation in power networks is proposed in this paper. This technique is based on fuzzy linear regression and uses the digitized voltage samples, which are fuzzy numbers, to ... -
Park's transformation application for power system harmonics identification and measurements
( Taylor & Francis , 2003 , Article)This paper presents the application of Park's transformation for identifying and measuring power system harmonics. One of the advantages of the proposed technique is that it does not need a model for the harmonics components ... -
On the application of αβ-transformation for power systems frequency relaying
( Institute of Electrical and Electronics Engineers Inc. , 2001 , Conference Paper)This paper presents a new and very accurate algorithm for power system frequency measurement. The proposed algorithm is based on αβ-transformation of the three phase voltages or current waveforms in the relay location, ... -
Two digital filtering algorithms for fast estimation of symmetrical components in a power system: A static estimation approach
( Elsevier , 2003 , Article)This paper presents the application of two digital filters working together for fast estimation of power systems symmetrical components. The three-phase unbalanced system is transformed to two phases using α–β-transformation. ... -
Harmonic modeling of linear and nonlinear loads based on Kalman filtering algorithm
( Elsevier , 2004 , Article)Most harmonic nonlinear load modeling techniques developed in the last two decades, assume that the load connected to the load bus has a constant admittance, inductive or capacitive, which depends on the mode of operation ... -
A new digital transformation for harmonics and DC offset removal for the distance fault locator algorithm
( Elsevier , 2004 , Article)This paper presents a new application of Park's transformations to identifying the positive sequence of the fundamental components of the three-phase voltage or current signals needed for fault locator algorithm. The problem ... -
Identification of individual types of harmonic loads in an electric power system-bus
( Elsevier , 2004 , Article)Some buses in a power system feed power to loads that are sources of harmonics. This type of bus is called a complex-bus. This paper provides a new application of the constrained least absolute value algorithm (LAV) to ... -
Identification of individual types of harmonic loads in an electric power system bus
( Elsevier , 2004 , Article)Some buses in a power system feed power to loads that are sources of harmonics. This type of bus is called a complex bus. This paper provides a new application of the constrained least absolute value algorithm (LAV) to ... -
Digital measurements of symmetrical components of a multiphase power system
( IEEE , 2004 , Conference Paper)The paper presents a digital algorithm method for measurements of symmetrical components of a multiphase power system, four phases. The models for symmetrical components of the multiphase system are first developed, and ... -
Power quality analysis based on fuzzy estimation algorithm: Voltage flicker measurements
( Elsevier , 2006 , Article)This paper presents a method based on fuzzy linear estimation for voltage flicker measurements. The proposed algorithm uses the digitized samples of the voltage signal at the location where the power quality standards are ... -
Common-mode voltage control through vector selection in three-to-five phase matrix converter
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)Multi-phase matrix converters (more than three phase) are distinctively advantageous as because of reduced per-phase current and unity power factor operation. The electrical motors supplied through these converters do have ... -
Space vector pulse width modulation scheme for three to seven phase direct matrix converter
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)In this paper a generalized multi-phase space vector theory is considered for developing the space vector modulation of a three-phase to seven-phase direct matrix converter (DMC). The modulation is based on the control of ... -
Space vector model of a three-phase to five-phase AC/AC converter
( Institute of Electrical and Electronics Engineers Inc. , 2013 , Conference Paper)Multi-phase motor drives becoming popular in some niche application areas such as ship propulsion, 'more electric aircraft' electric and hybrid electric vehicle. The rise in popularity is attributed to fact that they are ... -
Power system frequency estimation based on simulated annealing: A variable frequency model
( Sharif University of Technology , 2004 , Article)This paper presents a new technique for measuring power system frequency, rate of change of frequency and the voltage amplitude and phase angle using the Simulated Annealing (SA) based optimization algorithm. The algorithm ... -
PWM scheme for dual matrix converters based five-phase open-end winding drive
( IEEE , 2013 , Conference Paper)The paper present simple carrier-based pulse width modulation scheme for three to five-phase matrix converters feeding a five-phase machine from both ends. The two matrix converters feeding a five-phase induction machine ... -
On-line estimation of transformer model parameters
( IEEE , 2004 , Conference Paper)The conventional method for determining the parameters of the transformer is to performing the open and short-circuited tests. The method is only suitable for off-line application. This paper presents an alternative approach ... -
Sensorless sliding mode observer for a five-phase permanent magnet synchronous motor drive
( Elsevier , 2015 , Article)This paper deals with the sensorless vector controlled five-phase permanent magnet synchronous motor (PMSM) drive based on a sliding mode observer (SMO). The observer is designed considering the back electromotive force ...