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

A Positionless Control Method for Switched Reluctance Motor Based on Linear Inductance Conversion Method

A technology of switched reluctance motor and control method, which is applied in the direction of motor control, AC motor control, control system, etc., to achieve the effect of simple and easy method, less measurement work, and high estimation accuracy

Active Publication Date: 2022-06-21
SHAANXI AVIATION ELECTRICAL
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the saturation of the magnetic circuit of the switched reluctance motor, the nonlinearity of its electromagnetic characteristics brings challenges to the nonlinear control of medium and high speeds.

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 Positionless Control Method for Switched Reluctance Motor Based on Linear Inductance Conversion Method
  • A Positionless Control Method for Switched Reluctance Motor Based on Linear Inductance Conversion Method
  • A Positionless Control Method for Switched Reluctance Motor Based on Linear Inductance Conversion Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as a limitation of the present invention.

[0030] The motor used in this embodiment is a 1kW three-phase 12 / 8-pole switched reluctance motor.

[0031] Step 1: Obtain the characteristics of the inductance versus current of the switched reluctance motor at four special positions by the torque balance method, including the non-saturated inductance L un (θ 1 ), L un (θ 2 ), L un (θ hr ), L un (θ a ), and the phase voltage and phase current of the switched reluctance motor are obtained by measuring the current sensor and voltage sensor; where θ 1 Represents the rotor position when the front edge of the stator of the switched reluctance motor coincides with the rear edge of the rotor, θ 2 Represents the rotor position when the front edge of the stator and the front edge of the rotor coinci...

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 position sensorless control method of a switched reluctance motor based on a linear inductance characteristic conversion method. Due to the influence of magnetic field saturation, this method obtains the inductance characteristics of four special position switched reluctance motors through the torque balance method. According to the unsaturated inductance characteristics of the motor, the relationship between the unsaturated inductance and the current in the linear range is established. The real-time phase inductance is obtained by measurement and calculation, and the real-time phase inductance is converted into unsaturated inductance by using the proposed conversion model. According to the linear relationship between the unsaturated inductance and the rotor position, the corresponding motor rotor position information is finally calculated. The effectiveness of the method is verified by experiments. The method is simple and easy to implement, requires less measurement work, and has high estimation accuracy of rotor position information, and is suitable for medium and high speed applications.

Description

technical field [0001] The invention relates to a position sensorless control method of a switched reluctance motor based on a linear inductance conversion method, and belongs to the field of motor control. Background technique [0002] With the rapid development of multiple all-electric aircraft, aviation aircraft have put forward an urgent demand for high-reliability and high-power-density starter-generator systems. Switched reluctance motors have the advantages of simple structure, no permanent magnets, wide speed regulation range and strong fault tolerance, and have certain advantages in the field of aviation aircraft starting and power generation. The high-performance control of switched reluctance starter generators is inseparable from accurate position information. However, in the high-temperature applications of multi-electric aircraft, mechanical sensors have a high failure rate, which makes it difficult to meet the reliability requirements of electric drive control...

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): H02P25/08H02P23/14
CPCH02P25/08H02P23/14H02P2203/01
Inventor 葛乐飞钟继析鲍崇宋受俊蒙海鹰
Owner SHAANXI AVIATION ELECTRICAL
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