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

A technology of permanent magnet synchronous motor and control method, which is applied in the direction of electronic commutator, etc., and can solve the problems of different performance, different estimated value and measured value of iron loss of motor, etc.

Inactive Publication Date: 2014-04-02
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
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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

Method used

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

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Embodiment Construction

[0106] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0107] A control method for a permanent magnet synchronous motor drive system of an electric vehicle considering iron loss includes the following steps:

[0108] a. Establish a dynamic mathematical model of permanent magnet synchronous motor considering iron loss

[0109] In the present invention, the difference between the estimated value and the measured value of the iron loss is ignored, and under the premise of equal mutual inductance, linear magnetic circuit and consideration of iron loss, through the magnetic field-guided transformation, the iron loss consideration including dynamic electrical characteristics and mechanical characteristics is established. The dynamic mathematical model of the sixth-order d-q axis of permanent magnet synchronous motor:

[0110] dΘ ...

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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...

Claims

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Application Information

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IPC IPC(8): H02P6/16
Inventor 于金鹏于海生马玉梅山炳强李伟
Owner QINGDAO UNIV
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