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This paper presents the results of harmonic analysis and harmonic filter design for a grid connected aluminum smelting plant. Harmonic analysis studies are carried out to detect the system resonance frequencies and determine individual and total harmonic voltage distortion for a wide range of possible system operating conditions including scenarios with N-1 and N-2 generation, an outage of a harmonic...
This paper deals with a Cuk DC-DC converter as a single-stage power factor correction (PFC) converter for a permanent magnet brushless DC motor (PMBLDCM) fed through a diode bridge rectifier (DBR) from a single-phase AC mains. A three-phase voltage source inverter is used as an electronic commutator to operate the PMBLDCM driving an air conditioner compressor. The speed of the compressor is controlled...
The system performance of electrostatic precipitator systems depends heavily on the type and properties of the high voltage power supply. Switched mode type power supplies like IGBT inverters have been proven very beneficial for that purpose during the last decade in many applications. It has even been possible to increase the electrical power significantly, in many applications a factor of 2 can...
This paper describes improvements developed in an arc welding power supply based on resonant inverters. A new stand-by operation sequence based on sliding phase is proposed in order to reduce the discharge capacitor size. This stand-by solution also relieves the voltage specification of the resonant inductor. The interleaving operation of paralleled stages and the output connection wires are used...
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