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This paper introduces a design of a sensorless control of a five-phase permanent magnet synchronous motor drive working at low and zero speeds with low current distortion. The rotor position is obtained through tracking the saturation saliency. The saliency position is tracked through measuring the dynamic current response of the motor line currents due to the insulated-gate bipolar transistor switching...
The penetration of nonlinear loads within the commercial and residential sectors can cause severe problems to power systems including an increase in voltage distortion, thermal effects on rotating machines, a decrease in power factor, impact on energy metering and a decrease in the overall system efficiency. In order to precisely assess their effects on power systems, Personal Computers (PCs) were...
The penetration of nonlinear loads on power systems increases distortion levels and can cause severe problems to power systems. Many factors affect the degree of generated harmonics including the background voltage distortion and percentage of nonlinear load to the total load. Hence, the purpose of this paper is to investigate and accurately quantify the effects of these two factors on the harmonics...
The penetration of nonlinear loads on power systems increases distortion levels and can cause severe problems to power systems. Many factors affect the degree of generated harmonics including attenuation, diversity, system voltage, source impedance and frequency. Hence, the purpose of this paper is to investigate and accurately quantify the effects of these factors on the harmonics produced by a group...
Due to poor efficiencies of Incandescent Lamps (ILs), Fluorescent Lamps (FLs) and Compact Fluorescent Lamps (CFLs) are increasingly used in residential and commercial applications. This proliferation of FLs and CFLs increases the harmonics level in distribution systems that could affect power systems and end users. In order to quantify the harmonics produced by FLs and CFLs precisely, accurate modelling...
Due to the advancement in power electronics industry, home appliances become more power electronics based. The widespread use of these nonlinear loads increases the harmonics in distribution systems and affects the voltage quality of power systems. In order to quantify the harmonics produced by LCD TV, regular refrigerator and Adjustable Speed Drive (ASD) washer precisely, accurate modeling of these...
Growing concern for environmental issues and advancement in power electronic technology resulted in fast development of energy production using renewable energy resources (RES). These natural resources play an important role on power system generation and one of the most promising energy resources nowadays is the solar energy. Photovoltaic (PV) arrays are used to generate electric energy from sunlight...
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