The article proposes the use of numerical optimization methods for solving the problems of researching the reliability of electric drives control. A review and analysis of existing numerical methods of the optimal control theory and the choice of a mathematical model is carried out. An algorithm, based on the optimal control theory methods, for calculating the optimal dynamic modes operation of a frequency-controlled high-inertia asynchronous electric drive has been developed. The application of the maximum principle and the Newton-Raphson method is given. The software has been improved to effectively solve the optimal control problems of the asynchronous electric drive frequency start. The operation modes from the maximum speed to the minimum-minimorum mode (the lower limit of possible diagrams) have been determined. The results obtained provide scientifically grounded recommendations to developers, designers and operators on the use of computational and graphical data and the optimal control algorithm. This will make it possible to determine the reserve possibilities for increasing the energy efficiency and operational reliability of a frequency-controlled asynchronous electric drive intended for various sectors of the national economy.

Topics
Energy efficiency, Frequency measurement, Control theory, Mathematical modeling, Newton Raphson method, Review
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