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A field-circuit transient-transient coupling simulation method based on multi-loop method

A technology of transient coupling and simulation method, which is applied in design optimization/simulation, instrumentation, geometric CAD, etc. It can solve problems such as inapplicability to multiple finite element models and poor convergence performance, so as to improve simulation accuracy and convergence performance, The effect of good convergence performance

Active Publication Date: 2019-01-15
杭州麦科斯韦网络科技有限公司
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Problems solved by technology

[0005] In order to overcome the shortcomings of the existing motor-airfield coupling method that it cannot be applied to multiple finite element model occasions and has poor convergence performance, the present invention provides a method based on multiple finite element models that is effectively applicable to multiple finite element model occasions and improves convergence Field-circuit Transient-Transient Coupling Simulation Method Based on Loop Method

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  • A field-circuit transient-transient coupling simulation method based on multi-loop method
  • A field-circuit transient-transient coupling simulation method based on multi-loop method
  • A field-circuit transient-transient coupling simulation method based on multi-loop method

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] refer to Figure 1 to Figure 6 , a field-circuit transient-transient coupling simulation method based on the multi-loop method, comprising the following steps:

[0029] 1), according to the finite element model of the motor, according to the multi-loop theory, establish the multi-loop model of the motor, as follows (1) ~ (6):

[0030]

[0031]

[0032]

[0033]

[0034]

[0035]

[0036] Among them, B is the coefficient of friction, J is the moment of inertia, i L is the damping winding current, i W is the motor winding current, M is the winding mutual inductance, θ is the rotor position, R B is the damping bar resistance, T em is the electromagnetic torque, T L is the load torque, ω is the motor speed, ψ L is the damping winding flux linkage, ψ W is the motor winding flux linkage;

[0037] 2) By calling the finite element model, in eac...

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Abstract

A field-circuit transient-transient coupling simulation method based on a multi-loop manner comprises the following steps: 1) establishing multi-loop models, such as (1) to (6) in the following, of an electrical machine according to a finite element model of the electrical machine and by using a multi-loop theory; 2) by invoking the finite element model, in each system simulation step length, solving self-inductance parameters and mutual inductance parameters of each winding and a damping loop by using a finite element model of an electromagnetic field of the electrical field, and then returning the parameters to the multi-loop model of the electrical machine, to perform iterative solution on the electrical machine and an external circuit model, so as to implement joint simulation by coupling a finite element multi-loop model during system simulation. The present invention provides a field-circuit transient-transient coupling simulation method based on a multi-loop manner that is effectively applicable to multiple finite element model scenarios and can improve convergence performance.

Description

technical field [0001] The invention relates to a field-circuit coupling method of a motor. Background technique [0002] In modern power electronic systems, the motor is one of the main power generation and power consumption equipment. In order to accurately simulate the system at various stages of design, analysis, optimization, etc., a detailed and reliable motor model must be established during the system simulation process. Because the structure and material of the motor will affect the harmonics, load, transient and other characteristics of the system, it is necessary to establish an electromagnetic field model of the motor and couple it to the system simulator for joint simulation. [0003] At present, there are two common field-circuit coupling algorithms, one is the direct coupling algorithm, which couples the circuit model to the motor finite element equation for solution, so only one motor finite element model and system circuit coupling simulation can be realize...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23
Inventor 梁文毅陆天雄方卫中
Owner 杭州麦科斯韦网络科技有限公司
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