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Information × Registration Number 0215U000761, 0114U005106 , R & D reports Title Diagnostocs of induction motor faults basing on EMF signal in stator windings under unplugging popup.stage_title Head Kalinov Andrii, Кандидат технічних наук Registration Date 08-05-2015 Organization Kremenchuk Mykhaylo Ostrogradskiy State University popup.description2 The object of research - electromagnetic processes in asynchronous motor with damaged rotor bars. The aim is to increase the reliability of fault diagnosis of rotor bars of induction motors by extracting information signs of damage present in the signal electromotive force of one active side of the coil, using the theory of Z-transformation. Presents the development of methods for diagnosis of rotor bars of induction motors on the analysis of the signal electromotive force, which is induced in the stator windings after disconnecting the motor from the mains. Based on the calculation of the electromagnetic field in the air gap induction motor is shown, that the signal phase of the electromotive force of the stator winding are no signs of information corresponding to the distortion of the electromagnetic field of the rotor cores from damage. Proposed to use the decomposition of the signal electromotive force phase stator winding signals electromotive forces active sides of the coil using the Z-transform theory, which allows you to select information rods signs of damage that can not be detected in the signal electromotive silyfazy. Using the wavelet analysis of the selected signal electromotive force of one active side of the coil can improve the accuracy of fault diagnosis of rotor bars of induction motors. Using decomposition diagnostic signal that is the sum of the wavelet expansion coefficients of the electromotive force signals stator winding phase, to simplify the procedure for allocation of information to be undamaged rotor bars. The effectiveness of the proposed method of diagnosis is confirmed experimentally. The results can be used in the educational process in laboratory, workshops and independent work in research laboratories, factories.5481 Product Description popup.authors Калінов Андрій Петрович Мамчур Дмитро Григорович Ромашихіна Жанна Іванівна popup.nrat_date 2020-04-02 Close