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Information × Registration Number 0215U000762, 0114U005107 , R & D reports Title Systems of evaluation and enhancement of work characteristics of variable frequency electric drives with asymmetric induction motors popup.stage_title Head Kalinov Andrii, Кандидат технічних наук Registration Date 08-05-2015 Organization Kremenchuk Mykhaylo Ostrogradskiy State University popup.description2 Object of research - energy conversion processes in induction motor; Aim of the work consists in increase of energy parameters of vector-controlled induction motors due to increase of adjustment accuracy of control system by electromagnetic parameters via compensation of induction motor stator windings asymmetry; a vector-controlled system for electric drive was improved via regulation of rotor flux and stator currents by each phase separately, which, in difference to existing control systems, allows regulator adjustment according to asymmetry of electromagnetic parameters in equivalent circuit and decreases fluctuations of electromagnetic torque and heating electric energy losses due to generation of asymmetrical control signals for rotor phase fluxes according to winding asymmetry; a method for identification of vector-controlled induction motor electromagnetic parameters in pre-starting mode via testing influences on stator windings as a low-frequency sinusoidal voltages and determination of interphase equivalent circuit parameters was improved, which, in difference to existing method, allows to define mutual inductance, active and inductive resistances of each motor phase separately, which helps to take into account IM electromagnetic asymmetry for parametrical synthesis of proposed control system. Practical results - a methodology for measuring the instantaneous values of a vector-controlled IM currents and voltages signals was developed; an additional program module for implementation of proposed control system was developed; a methodology for determination induction motor electromagnetic parameters in pre-starting mode taking into account its asymmetry was developed. Implementation - at the enterprises of Ltd. "Semiol", JSC SRI "Peretvoruvach", for training students of Zaporizhzhya National Technical University and Kremenchuk Mykhailo Ostrohradskyi National University. Sphere (branch) of implementation - a control system for alternate current electric drives.5481 Product Description popup.authors Калінов Андрій Петрович Костенко Анна Вікторівна Мельников Вячеслав Олександрович Чепкунов Роман Анатолійович popup.nrat_date 2020-04-02 Close