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This article provides information about issues requiring particular attention during thermal tests of electrical machines. Presented are mistakes that can be made during testing and descriptions of the influence of parameters such as: relative humidity, reflected temperature, atmospheric temperature, distance from an object and emissivity, on the results of the tests.
This paper presents the practical implementation of a novel fault diagnosis scheme for the protection of interior permanent magnet (IPM) motors using wavelet transform and artificial neural network (ANN). The preprocessing of line currents of different faulted and normal unfaulted conditions of an IPM motor are carried out by the wavelet packet transform (WPT) in order to minimize the structure and...
This paper presents an experimental testing of a wavelet packet transform (WPT)-based technique for protecting and controlling three-phase voltage-source (VS) pulse-width modulated (PWM) inverters under extreme load conditions. The proposed technique is based on a two-level multiresolution analysis (MRA) applied on output currents of a 3Phi VS PWM inverter. The MRA aims to extract certain signatures,...
This paper takes much of its factual information from an original paper written in 1961 for another pulp and paper industry meeting. The information contained is relative to motor life and applies today. Almost all of the PPIC will find the details relative to motor systems of this time. Decisions reached in 1961 were made using the information available at that time. Offerings of the Motor Manufacturers...
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