Multi-field coupling optimization method for electric drive system based on bond graph modeling

A technology of electric drive system and optimization method, applied in the direction of design optimization/simulation, geometric CAD, etc., can solve problems such as limiting the effect of electric drive system

Active Publication Date: 2021-08-24
CHONGQING UNIV
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Problems solved by technology

Although some researchers have used the bond graph method model in the optimization design of the electric drive system, the models established by them are relatively simple, which can only reflect the kinematic characteristics of the electric drive system, and have not penetrated into the internal mechanism of the electric drive system. Modeling is carried out at the level of electromagnetic conversion and the principle of gear meshing, which limits its role in the integrated design of electric drive systems

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  • Multi-field coupling optimization method for electric drive system based on bond graph modeling
  • Multi-field coupling optimization method for electric drive system based on bond graph modeling
  • Multi-field coupling optimization method for electric drive system based on bond graph modeling

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Embodiment Construction

[0027] The present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0028] like figure 1 As shown, a multi-field coupling optimization method for an electric drive system based on bond graph modeling includes the following steps:

[0029] S1: Establish a permanent magnet motor bond graph model, and derive the state equation of the permanent magnet motor bond graph model.

[0030] The step S1 includes:

[0031] S11: According to the physical model of the permanent magnet motor, a bond graph model of the permanent magnet motor is established.

[0032] See figure 1 , U a , U b , U c are the voltage input of each phase of the permanent magnet motor, e a , e b , e c is the opposite electromotive force of the permanent magnet motor, i a , i b , i c are the currents of each phase winding of the permanent magnet motor, respectively.

[0033] See figure 2 ( figure 2 , Figure 4 , Image 6 and Figure 8 same...

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Abstract

The invention discloses a multi-field coupling optimization method for an electric drive system based on bond graph modeling, comprising the following steps: S1: establishing a bond graph model of a permanent magnet motor; S2: establishing a bond graph model of a reducer; S3: establishing The bond graph model of the electric drive system, and deduce the state equation of the bond graph model of the electric drive system; S4: Input the simulation parameters, and correct the bond graph model of the electric drive system. Using the above technical solutions, the energy transfer process of the electric drive system is clearly described, which can dynamically reflect the dynamic characteristics of the electric drive system in real time, and provides a theoretical basis for the optimal design of the electric drive system.

Description

technical field [0001] The invention relates to the technical field of optimal design of an electric drive system, in particular to a multi-field coupling optimization method of an electric drive system based on bonding graph modeling. Background technique [0002] The electric drive system includes the mutual transfer and transformation of various energy flows such as electricity, magnetism, machine, liquid, and heat. Only by establishing an integrated model of multi-field coupling can more accurate load characteristics, efficiency characteristics, and amplitude-frequency characteristics be obtained. And temperature field characteristics, so as to provide design basis for the design and development of integrated electric drive system and parameter optimization. [0003] In the modeling of electric drive systems, most of them are modeled by traditional theoretical modeling methods. Divide the electric drive system into several subsystems such as mechanical, electrical and m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/20
Inventor 孙冬野侯文锋尤勇史小丁周瑾
Owner CHONGQING UNIV
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