Horeniuk V. Synthesis of models of the optimal motion of electric car with traction induction motors.

In the dissertation work, the problem of the creation of methods of synthesis and identification of mathematical models of frequency control of the induction electric drive of the electric car by a criterion of a minimum of expenses of a charge of the power accumulator battery is solved. These mathematical models have been created based on the Lagrange variational method option and mathematical model of the magnetization curve in the form of an inverted hyperbolic sine, which with high precision binds the current in the stator winding of an induction motor with a magnetic flux created by the field of this current and therefore corresponds to the physical conditions of the actual operation of induction electric machines. Also, the mathematical models of the car's movement on the rounding of the road, synthesized from the balance equations of its kinematics and dynamics, have been integrated into the obtained mathematical models. Based on them, the law of electric car control was developed. The introduction of this law for electric vehicles with the induction electric drive will expand the distance that can be covered by an electric car on a single charge of the battery and will provide conditions to improve stability when cornering. To assess the adequacy of optimal motion models of an electric car with a traction induction motor performed simulation modeling of driving by the horizontal road section and driving by sections of the road with the different angles of slopes and rises, optimal by the criterion of minimum electrical losses. The obtained simulation results and their analysis confirm the theoretical statements and the efficiency of the synthesized mathematical models of the optimal motion of the electric car under different driving conditions. Been proposed a way of implementing the decision-making support system for the electric car driver to achieve optimal movement according to the criterion of minimizing energy consumption.