Development of an energy-saving control system for the power plant of an electric vehicle with a traction induction motor
Abstract
Development of an energy-saving control system for the power plant of an electric vehicle with a traction induction motor
Incoming article date: 04.12.2020The paper presents a solution to the problem of development a vector control system for an induction motor as part of an electric vehicle power plant, which ensures the maximum efficiency of the motor in various driving modes. A nonlinear mathematical model of an induction motor is used, in a coordinate system rotating synchronously with the magnetic field and oriented along the flux linkage vector of the rotor winding. The principles and methods of synergetic control theory are used to design a vector controller. The regulator provides the set speed of the electric vehicle and minimizes energy losses in changing driving conditions. The theoretical results are confirmed by computer simulation of the power plant of an electric vehicle, consisting of a storage battery, an autonomous voltage inverter, an induction motor and a car body. To simulate the power plant of an electric vehicle with the proposed control algorithms, the Simulink environment was used. The mode of execution of the speed reference of an electric vehicle was simulated in accordance with NEDC. Based on the analysis of the battery condition during the simulation of the electric vehicle's mileage, it can be concluded that the use of an energy-saving regulator is about 40% lower compared to traditional FOC systems.
Keywords: electrovehicle, induction motor, AKAR, IFOC, simulink