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Due to the poor efficiencies of many linear loads advanced power electronics based technologies are being introduced in residential, commercial and industrial applications to help in reducing the electrical consumption and increasing power control capabilities. This proliferation of nonlinear loads increases concerns of various power quality issues related to the use of such devices in power systems...
Recently, more attention is given to harmonic assessment of nonlinear loads due to the penetration of such devices on power systems which cause detrimental effects to the power system and other users. In order to quantify these distortions precisely, two commonly used topologies for implementation in Personal Computers (PCs) are modeled and accurately assessed. These are forward and flyback converters...
This paper proposes a new protection scheme for marine power systems (MPS). The scheme exploits the increased use of power electronic devices to provide a useful complement to traditional protection strategies which can also provide the necessary back up protection during extreme protection failure, without the need for communication channels. The scheme is described for an AC zonal Advanced Power...
An induction motor model based on the per-phase equivalent circuit is used to simulate operation with an open circuit fault. The model considers both spatial field harmonics as well as saturation effects to correctly model the motor's behaviour under faulty conditions, where the non-linearities may produce problematic torque pulsations due to the unbalanced nature of the winding distribution. A model...
A new mathematical model of a three-phase induction machine, suitable for the simulation of machine behaviour under fault conditions is presented. The model employs a simple state space equivalent circuit based model of the induction machine, which is enhanced to include space harmonics and main flux saturation effects. The model has been improved by including a variation of machine inductances with...
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