Characteristics Research of the Semiconductor Frequency Converter in Matlab Simulink

Abstract

Due to competition in the global market, Russian mining enterprises are striving to improve their technical equipment and energy efficiency. Improvement of electric drive systems of mechanisms involved in mining can lead to significant results in solving this problem. In this regard, much attention is paid to the development of more advanced devices used in the electric drive. Currently, various devices for starting, operating and regulating the speed of three-phase squirrel cage induction motors are being developed. To check the performance of the developed devices, a variety of research methods are used, one of which is computer simulation. The article discusses an original adjustable transistor gearbox for a three-phase squirrel cage induction motor powered by a DC power. The urgency of using a semiconductor converter in drives of mechanisms of mining enterprises has been substantiated. To study the operation of the motor in the environment in the Matlab Simulink environment, a simulation model of the developed drive was created. To analyze the characteristics of an induction motor when working with a semiconductor converter, they were compared with the natural mechanical characteristic.