A Flux Optimization Method for Permanent Magnet Synchronous Motor Based on Nonlinear Dynamics Analysis

A permanent magnet synchronous motor and nonlinear dynamics technology, which is applied in the direction of motor generator control, control generator, AC motor control, etc., can solve problems such as complex objective functions, achieve the effect of reducing design cost and improving stability

Active Publication Date: 2020-08-18
XIAN UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some scholars have used intelligent optimization algorithms to design permanent magnets, which has improved the quality of the overall design, but there are also defects, and it is very complicated to determine the specific objective function

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
  • A Flux Optimization Method for Permanent Magnet Synchronous Motor Based on Nonlinear Dynamics Analysis
  • A Flux Optimization Method for Permanent Magnet Synchronous Motor Based on Nonlinear Dynamics Analysis
  • A Flux Optimization Method for Permanent Magnet Synchronous Motor Based on Nonlinear Dynamics Analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0106] A method for optimizing the flux linkage of a permanent magnet synchronous motor based on nonlinear dynamics analysis of the present invention is specifically implemented according to the following steps:

[0107] Step 1, use the d-p coordinate system for analysis, that is, the stator and the rotor rotate synchronously, and establish the mathematical model of the permanent magnet synchronous motor, as shown in formula (1):

[0108]

[0109] In formula (1), L q is the q-axis stator inductance; R is the stator winding resistance; i q is the q-axis stator current; n p is the pole logarithm; L d is the d-axis stator inductance, and L q =L d ; ω is the angular velocity of the rotor in rad / s; i d is the d-axis stator current; ψ f is the permanent magnet flux linkage, the unit is Wb; u q is the q-axis stator voltage; u d is the d-axis stator voltage; J is the moment of inertia, the unit is kg m 2 ; b is the damping coefficient, the unit is N m (rad / s) -1 ; T L is...

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 discloses a magnetic flux linkage optimization method for a permanent magnet synchronous motor (PMSM) based on nonlinear kinetic analysis. The method comprises firstly establishing a mathematical model of the PMSM; converting the mathematical model of the PMSM by using an affine transformation method; performing simulation to determine the magnetic flux linkage range of the PMSM, wherein since the mathematical model of the PMSM is stable at an equilibrium point after simulation, the magnetic flux linkage range of the PMSM can be obtained; then obtaining the Lyapunov exponential spectrum of the simulated mathematical model of the PMSM by using matlab simulation software so as to further reduce the magnetic flux linkage range of the PMSM; and finally, establishing the simulatedmathematical model of the PMSM, selecting at least five magnetic flux linkage values for simulation, and obtaining the optimal magnetic flux linkage value of the PMSM when the magnetic flux density is close to saturation. The method can obtain the magnetic flux linkage value at the optimum working point when designing a motor and reduces the design cost.

Description

technical field [0001] The invention belongs to the technical field of nonlinear dynamics, and in particular relates to a method for optimizing the flux linkage of a permanent magnet synchronous motor based on nonlinear dynamics analysis. Background technique [0002] Compared with other motors, the performance of permanent magnet synchronous motors has been greatly improved. It has the advantages of small size, light weight, high power factor, fast response, high efficiency, and large output torque. As a result, permanent magnet synchronous motors have higher reliability and have been widely used in industrial and high-performance applications, including industrial drives and battery electric vehicles. In recent years, the study of its stability and reliability has attracted widespread attention, because the stable and reliable operation of permanent magnet synchronous motors is an important issue in industrial automation production. Existing studies have shown that under ...

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 Patents(China)
IPC IPC(8): H02P21/14H02P25/022
Inventor 解骞慕长辉吴刚郁亚南贾嵘
Owner XIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap