Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electromagnetic actuator equivalent magnetic circuit modeling method considering eddy current distribution non-uniformity

A technology of electromagnetic actuator and modeling method, applied in special data processing applications, design optimization/simulation, etc., can solve the problems of uneven distribution of eddy current, not considering the magnetic characteristics and eddy current characteristics of iron core, etc., and achieve accurate prediction of dynamic performance Effect

Active Publication Date: 2020-12-15
HARBIN ENG UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an equivalent magnetic circuit modeling method of an electromagnetic actuator that considers the unevenness of the eddy current distribution and overcomes the shortcomings of the existing equivalent magnetic circuit method of electromagnetic actuators that do not consider the magnetic characteristics of the iron core and eddy current characteristics.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electromagnetic actuator equivalent magnetic circuit modeling method considering eddy current distribution non-uniformity
  • Electromagnetic actuator equivalent magnetic circuit modeling method considering eddy current distribution non-uniformity
  • Electromagnetic actuator equivalent magnetic circuit modeling method considering eddy current distribution non-uniformity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0031] combine Figure 1-3 , the concrete steps of the present invention are as follows:

[0032] (1) Divide into zones according to the structure of the electromagnetic actuator, define the inner magnetic pole part as area A, the outer magnetic pole part as area B, the area connecting the inner and outer magnetic poles above the coil winding as area C, and the armature part as area D. Such as figure 1 As shown, the four areas defined above are divided into six slices of equal thickness in the radial direction, and it is assumed that the eddy current in each layer of iron core slices is uniformly distributed, figure 2 The structure diagram of the equivalent magnetic circuit of the electromagnetic actuator constructed after division.

[0033] (2) Define the eddy currents of the first layer and the sixth layer on area A as i R11 and i R16 , while the eddy resi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention aims to provide an electromagnetic actuator equivalent magnetic circuit modeling method considering eddy current distribution non-uniformity. The method comprises the following steps: performing partition division A-D according to the structure of an electromagnetic actuator, defining eddy currents of a first layer and an nth layer on each region as iR11 and iR1n respectively, calculating eddy resistances corresponding to the first layer and the nth layer; and defining the equivalent current of an air gap part between an iron core and an armature of the electromagnetic actuator as igk, defining the equivalent inductance of magnetic flux leakage parts of regions A to D as Lair1-Lair4, calculating the flux linkage between two adjacent thin layers of the regions A to D, and calculating the primary circuit current i to obtain the magnetic flux phi of the electromagnetic actuator. According to the invention, a problem that the non-linear magnetization and magnetic saturation phenomena of the iron core magnetic material, especially the consideration of the eddy current effect in the magnetic field, cannot be solved by the existing method is solved. The modeling method provided by the invention can be used for accurately predicting the dynamic performance of the electromagnetic actuator.

Description

technical field [0001] The invention relates to an electromagnetic actuator, in particular to an electromagnetic actuator of a high-voltage common rail system. Background technique [0002] The high-speed electromagnetic actuator is the core control component of the high-pressure common rail system, which directly determines the injection characteristics of the common rail system, thereby affecting the power and emission of the diesel engine. Usually, the three-dimensional finite element method is used to optimize the design of electromagnetic actuators. However, the three-dimensional electromagnetic calculation takes a long time, and it is impossible to achieve a fast calculation comparison of different schemes. The more prominent problem is that the three-dimensional finite element method cannot realize the coupling calculation of the electromagnetic actuator and the hydraulic components and mechanical components of the high-pressure common rail system, which makes it impo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 赵建辉卢相东
Owner HARBIN ENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com