What's in the issue?
Power supply and electrical equipment
Pulse converters of energy in system of electrosupply of the automobile
Sarbayev V., Garmash Y., Volkov S.In given clause(article) the question of adaptation of system of electrosupply of the automobile to varied conditions of operation is considered. It is shown, that problems of adaptation can be in part solved at use of pulse converters of energy.
Keywords: adaptation, a pulse, the converter of a pressure(voltage), pulse-width modulation, the law of change of a pressure(voltage) of a feed(meal).Resources and infrastructure provision of electro cars’ life cycle processes
Kozlovskiy V., Stroganov V.The publication represents the research results of problems of resources and infrastructure provision of electro cars at the stages of life cycle.
Keywords: quality, reliability, electrical equipment, electro car.Digital model of installation for capacitive shunt compensation
German L., Serebryakov A., Maksimova A.The article is about a problem of non-sinusoidal voltage AC traction networks. Necessity of shunt compensation devices with harmonic filtering function was analyzed. Analyzed electromagnetic processes in AC traction networks railways, with using the equivalent circuit model with a digital electric rectifier, giving a complete picture of change in the instantaneous values of all the calculated current and voltage harmonics on the entire period of the flow of electromagnetic processes. Evaluated the degree of amplification of harmonic currents when changing frequency settings compensating systems. Regarded possibility of reducing the amount of the gain due to changes in the resonant frequencies of KU.
Keywords: reactive power's compensation; non-sinusoidal voltage; digital model of electric locomotive; filter-installation; amplification of harmonics; resonance tuning PKU.