Showing papers by "Yahia Baghzouz published in 1990"
TL;DR: In this article, an algorithm for optimizing shunt capacitor sizes on radial distribution lines with nonsinusoidal substation voltages such that the RMS voltages and their corresponding total harmonic distortion lie within prescribed values is presented.
Abstract: An algorithm for optimizing shunt capacitor sizes on radial distribution lines with nonsinusoidal substation voltages such that the RMS voltages and their corresponding total harmonic distortion lie within prescribed values is presented. The problem is formulated as a combinatorial optimization problem with inequality constraints. A simple heuristic numerical algorithm that is based on the method of local variations is proposed to determine an optimal solution. An example shows that optimal capacitor sizes found by neglecting the harmonic components may result in unacceptable voltage distortion levels. >
215 citations
07 Oct 1990
TL;DR: In this article, a method of evaluating harmonic currents and voltages associated with slip power recovery drives is presented, where the rectifier commutation overlap and DC link current ripple are included in the analysis by using a hybrid between the traditional d-q and a-b-c induction motor models.
Abstract: A method of evaluating harmonic currents and voltages associated with slip power recovery drives is presented. The rectifier commutation overlap and DC link current ripple are included in the analysis by using a hybrid between the traditional d-q and a-b-c induction motor models. The harmonic components are determined from closed-form expressions which are functions of the numerical values of the distorted waveforms. Computer simulations illustrate the nonperiodic nature of the stator currents and typical harmonic contents of rotor phase current and voltage as well as inverter current at various speed values. >
27 citations
30 Apr 1990
TL;DR: In this paper, a mathematical model is developed and a solution method is presented for reactive power compensation of distribution circuits having nonlinear loads Both additional power losses and increase in RMS voltages due to harmonic current flows are incorporated in the problem formulation, and significant loss reduction and improvement in voltage distortion levels can be achieved when taking harmonic components into account.
Abstract: A mathematical model is developed and a solution method is presented for reactive power compensation of distribution circuits having nonlinear loads Both additional power losses and increase in RMS voltages due to harmonic current flows are incorporated in the problem formulation It is shown that the capacitor sizes and locations when nonlinear loads are present in a system can be quite different from those found by neglecting harmonic components It is shown that significant loss reduction and improvement in voltage distortion levels can be achieved when taking harmonic components into account >
6 citations