Research on optimization of vector control of an asynchronous motor using the analytical control system

THE PURPOSE. The rapid development of electric transport requires the use of an energy-efficient drive in order to increase the range of runs between battery charges. This, in turn, requires research to optimize the electric drive system based on an asynchronous motor with a combined winding.

METHODS.. A combination winding motor is a high performance motor with a stator winding consisting of a combination of two star and delta windings connected in parallel. The structure and mathematical model of the engine, which are the basis for constructing the engine control algorithm, are considered. The control algorithm based on determining the optimal value of the magnetic flux in the coordinates of the d - q axis to achieve low power losses, taking into account losses in the iron core and low magnetic saturations, helps to improve the efficiency of inverter control.

RESULTS. The algorithm is pre-tested with several simulations and then experimentally verified by applying the proposed control technique to a 1.5 kW controlled field induction motor (FOC) drive.

CONCLUSION. The obtained results are presented and discussed, demonstrating that the proposed inverter online control technique can significantly reduce the power loss of the electric drive.

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