Control method of driving system of permanent magnet synchronous motor of electrical automobile considering iron loss

Abstract

The invention discloses a control method of a driving system of a permanent magnet synchronous motor of an electrical automobile considering iron loss, and provides a control method of a driving system of a permanent magnetic synchronous motor considering iron loss based on a self-adaptive fuzzy backstepping method, which solves the non-linear problem of the power driving and control system of the motor of the electrical automobile, enables the motor to quickly reach the stable running state and is more suitable for the control objects requiring quick dynamic response, such as the driving system of the electrical automobile. The control rules u[d] and u[q] only adopt one self-adaptive parameter theta, so as to reduce the calculation amount. The method has the advantages that the problem of position tracking and control of the permanent magnet synchronous motor considering the iron loss under the conditions of orienting to the site and having undetermined parameter and load torque disturbance is solved; the fuzzy logic system is used for approximating to the unknown non-linear item, and the self-adaptive fuzzy backstepping method is used for enabling the tracking error to approximate to 0; the more accurate control precision is reached, and the ideal position tracking and control effect is ensured.

Description

technical field [0001] The invention relates to a motor speed regulation control technology for an electric vehicle, in particular to a control method for a permanent magnet synchronous motor drive system of an electric vehicle considering iron loss. Background technique [0002] An electric vehicle refers to a vehicle powered by a vehicle-mounted power supply, driven by a motor to drive the wheels, and conforming to the requirements of road traffic and safety regulations. In recent years, due to the rising consumption of fossil fuels and growing concern for environmental issues, there has been increasing interest in the research and development of electric vehicles. The advantages of electric vehicles are: on the one hand, zero emission of exhaust gas is achieved. Even if the power consumption is converted into the emissions of power plants, other pollutants except sulfur and particles are also significantly reduced; on the other hand, the noise is low, and electric vehicle...

AI Technical Summary

Problems solved by technology

In the production process, due to the influence of stamping, interlocking and shrinkage fitting, etc., the pressure exerted on the iron core and the magnetic characteristics of the iron core are different from the properties of the material itself, which may cause the estimated value of the iron loss of the motor to be different from that of the different measurements

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