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Fuzzy backstepping control method for electric vehicle asynchronous motor considering iron loss

A technology of asynchronous motors and fuzzy backstepping, applied in motor generator control, electronically commutated motor control, control systems, etc., can solve the problem that estimated variables cannot be guaranteed to converge to real values, lack of methods for designing governors, and lack of Stability analysis and other issues to achieve the effect of fast response, easy direct control, and simple structure

Inactive Publication Date: 2016-01-13
QINGDAO UNIV
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Problems solved by technology

However, these methods lack a complete method of designing the governor, and there is no traditional Lyapunov stability analysis, the estimated variables cannot be guaranteed to converge to the real value, resulting in an unreliable algorithm

Method used

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  • Fuzzy backstepping control method for electric vehicle asynchronous motor considering iron loss
  • Fuzzy backstepping control method for electric vehicle asynchronous motor considering iron loss
  • Fuzzy backstepping control method for electric vehicle asynchronous motor considering iron loss

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Embodiment Construction

[0103] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0104] combine figure 1 with figure 2 As shown, the electric vehicle asynchronous motor fuzzy backstepping controller considering iron loss mainly includes asynchronous motor fuzzy backstepping controller 1, coordinate transformation unit 2, SVPWM inverter 3, speed detection unit 5 and current detection unit 6. The speed detection unit 5 and the current detection unit 6 are mainly used to detect the current value and speed-related variables of the asynchronous motor. The actual measured current and speed variables are used as input, and the voltage is controlled by the fuzzy backstepping controller 1 of the asynchronous motor, and finally converted into Three-phase electricity controls the speed of asynchronous motor. In order to design a more effective controller, it is necessary to establish a dynamic model of asynchronous motor considering ...

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Abstract

The invention discloses a fuzzy backstepping control method of an asynchronous motor of an electrical automobile considering iron loss, and provides a self-adaptive fuzzy controller based on a backstepping method principle, which aims at solving the non-linear and iron loss problems of the motor driving and control system of the electrical automobile. The fuzzy logic system is used for approximating to the unknown non-linear item, and the self-adaptive backstepping method is used for designing the controller. The method has the advantages that the part lacking the complete controller design in the traditional method is supplemented, the Lyapunov stability analysis is added, and only one self-adaptive parameter theta exists in the control signals u[qs] and u[ds], so as to reduce the calculation amount; after the motor is adjusted by the control method, the motor can quickly run to the stable state; the method is more suitable for the control objects requiring quick dynamic response, such as the driving system of the electrical automobile; the simulation result indicates that the control method can overcome the influence by inaccurate parameters, and is favorable for ensuring the ideal control effect, and realizing the quick and stable response of rotation speed.

Description

technical field [0001] The invention relates to a motor speed regulation control technology for an electric vehicle, in particular to a fuzzy backstepping control method for an asynchronous motor of an electric vehicle considering iron loss. Background technique [0002] Since the international financial crisis, developed countries such as the United States, Europe, Japan, and South Korea have been promoting the transformation and development of the automobile industry, and a new round of upsurge in the development of new energy vehicles has formed globally. Among all technological innovations, motor drive plays an extremely important role, because the future drive method must be less energy-consuming, more environmentally friendly and more sustainable. [0003] Electric vehicles include mechanical systems such as motor drive and control systems, driving force transmission, and working devices to complete established tasks. The motor drive and control system is the core of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14
Inventor 于金鹏马玉梅于海生山炳强李琪炜
Owner QINGDAO UNIV
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