Method for calculating dynamic characteristics of electromagnetic mechanism based on temperature compensation matrix

A technology of electromagnetic mechanism and dynamic characteristics, applied in the direction of calculation, electrical digital data processing, design optimization/simulation, etc., can solve the problems of high precision, high efficiency, inability to apply the dynamic characteristics analysis and inspection of electromagnetic mechanism, etc., and achieve the effect of preventing failure.

Active Publication Date: 2016-08-24
HARBIN INST OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing technology cannot achieve high efficiency and high precision at the same time, and the problem that it cannot be applied to the analysis and inspection of the dynamic characteristics of the electromagnetic mechanism at different temperatures proposes a dynamic characteristic of the electromagnetic mechanism based on the temperature compensation matrix calculation method

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  • Method for calculating dynamic characteristics of electromagnetic mechanism based on temperature compensation matrix
  • Method for calculating dynamic characteristics of electromagnetic mechanism based on temperature compensation matrix
  • Method for calculating dynamic characteristics of electromagnetic mechanism based on temperature compensation matrix

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specific Embodiment approach 1

[0033] Specific implementation mode one: combine figure 1 A method for calculating the dynamic characteristics of an electromagnetic mechanism based on a temperature compensation matrix in this embodiment is specifically prepared according to the following steps:

[0034] Step 1. Obtain the key parameters of the electromagnetic mechanism according to the process drawings of the electromagnetic mechanism, wherein the key parameters include the geometric dimensions of the electromagnetic mechanism, the rated voltage of the electromagnetic mechanism, the quality of the armature of the electromagnetic mechanism, and the number of coil turns N of the electromagnetic mechanism; the electromagnetic mechanism is a certain model Electromagnetic mechanism of a typical DC contactor;

[0035] Step 2, search or measure the magnetization curve (magnetization curve is B-H curve) of the soft magnetic material used in the electromagnetic mechanism with the temperature change of the electromagn...

specific Embodiment approach 2

[0061] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the differential equations of the dynamic characteristics of the electromagnetic mechanism described in step four are:

[0062] d ψ d t = u - i R ( T ) d v d t = F E - F f m...

specific Embodiment approach 3

[0066] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the electromagnetic attraction F of the armature E The specific calculation process is:

[0067] Step A1. Determine the magnetization curve and coil resistance R of the soft magnetic material in the magnetic circuit of the electromagnetic mechanism according to the temperature T of the electromagnetic mechanism;

[0068] Step A2, assign the coil current at time t and the armature displacement at time t to the magnetic circuit model, and use the dichotomy method to solve the main magnetic flux φ at time t;

[0069] Step A3, calculate the magnetic pressure drop U at the air gap according to the main magnetic flux φ and the number of coil turns N of the electromagnetic mechanism δ ;

[0070] U δ = φ Λ δ

[0071] Among them, Λ δ Indicates the air ga...

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Abstract

The invention provides a method for calculating the dynamic characteristics of an electromagnetic mechanism based on a temperature compensation matrix, relates to the calculation method of dynamic characteristics of the electromagnetic mechanism, and aims to solve the problems that an existing technology cannot simultaneously achieve the effects of high efficiency and high accuracy and cannot be applied to analytical test on the dynamic characteristics of the electromagnetic mechanism at different temperatures. The method comprises the following steps: 1, acquiring a key parameter of the electromagnetic mechanism; 2, searching or measuring a magnetizing curve and a resistance value R; 3, setting the initial state of the dynamic characteristics of the electromagnetic mechanism; 4, calculating the dynamic characteristics of the electromagnetic mechanism at t+delta t moment; 5, acquiring coil current at the t+delta t moment; 6, acquiring the dynamic characteristics of the electromagnetic mechanism at a temperature T of the current electromagnetic mechanism; and 7, acquiring the dynamic characteristics of the electromagnetic mechanism at different electromagnetic mechanism temperatures, and the like. The method is applicable to the field of electromagnetic mechanism dynamic characteristic calculation.

Description

technical field [0001] The invention relates to a calculation method for the dynamic characteristics of an electromagnetic mechanism, in particular to a calculation method for the dynamic characteristics of an electromagnetic mechanism based on a temperature compensation matrix. Background technique [0002] Electromagnetic mechanism is an important part of electrical equipment such as relays and contactors. These electrical equipment are the basic components widely used in the power system, and their performance directly affects the safety and stability of the power system. Before production and application, it is necessary to simulate and analyze the dynamic characteristics of the electromagnetic mechanism. Temperature is one of the important factors affecting the dynamic characteristics of electromagnetic mechanisms. In recent years, with the development of energy sources, high-power DC electrical equipment has received extensive attention and application. When simulating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 杨文英郭久威彭飞李茹瑶翟国富
Owner HARBIN INST OF TECH
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