Cherniy A. Theory and practice of electromechanical systems electric motors parameters monitoring

The dissertation is devoted to scientific and practical problem of development of the theory and methods of electromechanical systems electric motors parameters monitoring to enhance the quality of motors identification by taking into account electric, magnetic and mechanical parameters variation during operation or repair. This problem has been solved by mathematic apparatus development to make possible the determination of electric motors parameters and reliability based on the information about instantaneous values of electric drive condition variables. The task of the work is development of the theory and methods of electromechanical systems electric motors parameters monitoring to enhance the quality of motors identification by taking into account electric, magnetic and mechanical parameters variation during operation or repair. Electromechanical systems electric motors parameters are proposed to be monitored on the basis of analytical criteria and indexes of energy transformation quality according to instant current and voltage measured at fixed rotor in noncomtinuous current conditions. Parameters, characteristics and electric motors condition estimation are determined in the automated complex with the help of the methods of power balance and equations of electric balance at windings feeding from thyristor converters with the algorithms of diagnostic information processing. The calculated data is used in systems of compensation of quality of energy transformation in electric motors, service life and reliability determination. Key words: electromechanical system, monitoring, quality of energy transformation, control system, diagnostics, measuring and diagnostic complex.