Motor air-gap field modeling method based on distribution parameter, and application of the same

A technology of air-gap magnetic field and modeling method, applied in electrical components, control generator, motor generator control and other directions, can solve the distortion of motor model, deviation of electromagnetic torque calculation results, and can not meet the requirements of permanent magnet synchronous motor for vehicles. Problems such as accurate torque/fast control

Active Publication Date: 2016-06-29
VALEO INTERIOR CONTROLS (SHENZHEN) CO LTD
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the particularity of the automotive electric drive system, the permanent magnet synchronous motor used in the vehicle cannot satisfy the above two assumptions, which makes the motor model described by the traditional motor algorithm seriously distorted du

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
  • Motor air-gap field modeling method based on distribution parameter, and application of the same
  • Motor air-gap field modeling method based on distribution parameter, and application of the same
  • Motor air-gap field modeling method based on distribution parameter, and application of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0055] Such as figure 1 As shown, this embodiment provides a method for modeling the air-gap magnetic field of a motor based on distributed parameters, including:

[0056] Step S1, select the working point of the motor: set the effective value of the phase current I in the actual working range of the motor s ∈[0I max ], the stator current vector i s The spatial phase angle β∈[0β with respect to the d-axis of the rotor position max ]. The effective value of the phase current I s The actual working range of the motor and the space phase angle β of the stator current vector relativ...

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 relates to a motor air-gap field modeling method based on a distribution parameter, and application of the same. The modeling method comprises the steps: 1) selecting a motor working point: respectively dividing the motor practical working ranges of a phase current effective value and a stator current vector relative to a space phase angle of a rotor position d axis, and acquiring the motor current working point under a synchronous rectangular coordinate system according to a magnetomotive force equivalence principle; 2) solving the values for motor air-gap field distribution under each working point; 3) performing fourier series expansion on the values; and 4) fitting a fourier coefficient with a polynomial about the motor current working point, and converting the waveform of the air-gap fields into a mathematical model about quadrature-direct axis current and space mechanical angles. Compared with the prior art, the distribution parameter model for a motor, established by means of the motor air-gap field modeling method based on a distribution parameter can more accurately mathematically descript the motor; and the established model is applied to motor control so that the control accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of drive control of permanent magnet synchronous motors, in particular to a method for modeling the air gap magnetic field of a motor based on distributed parameters and its application. Background technique [0002] Electric vehicles are the main development direction of new energy vehicle technology, and the motor drive system is the core component of electric vehicles. Permanent magnet synchronous motors are used more and more for their advantages of high power density, wide speed range of constant torque and high efficiency. Most of the traditional motor control algorithms use the concentrated parameter of inductance to describe the voltage and flux equations. The surface-mounted permanent magnet synchronous motor uses the self-inductance and mutual inductance between the three-phase windings to establish the motor model in the stator coordinate system. The salient pole permanent magnet synchronous moto...

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
IPC IPC(8): H02P21/00H02P21/14
Inventor 钟再敏江尚张光耀
Owner VALEO INTERIOR CONTROLS (SHENZHEN) CO LTD
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