Short circuit fault tolerant control method for five-phase fault tolerant permanent magnet motor

A permanent magnet motor, fault-tolerant control technology, applied in the direction of motor generator control, electronic commutation motor control, control system, etc., can solve problems such as five-phase fault-tolerant permanent magnet motor control problems

Active Publication Date: 2015-06-03
JIANGSU UNIV
View PDF2 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the control problem of the existing five-phase fault-tolerant permanent magnet motor during short-circuit fault operation

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
  • Short circuit fault tolerant control method for five-phase fault tolerant permanent magnet motor
  • Short circuit fault tolerant control method for five-phase fault tolerant permanent magnet motor
  • Short circuit fault tolerant control method for five-phase fault tolerant permanent magnet motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] Such as figure 1 As shown, this is a five-phase fault-tolerant permanent magnet motor. Its structure includes a coaxial inner stator 3 and an outer rotor 2. A permanent magnet 1, an armature winding 4, and an armature tooth 7 are arranged between the inner stator 3 and the outer rotor 2. Fault-tolerant teeth 5 and modulation poles 6, permanent magnets 1 are fixed on the inner surface of the outer rotor 2 along the circumferential direction, the magnetization direction of the permanent magnets 1 is radial and N poles and S poles are arranged alternately, and the inner stator 3 is arranged on the circumference 10 armature teeth 7 and 10 fault-tolerant teeth 5 interlaced with each other. A single-layer concentrated armature winding 4 is wound on the armature teeth 7, and the concentrated armature windings 4 on two radially oppo...

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 short circuit fault tolerant control method for a five-phase fault tolerant permanent magnet motor. The method comprises the following steps: establishing a five-phase fault tolerant permanent magnet motor model; compensating a short circuit fault phase normal torque loss by using non-fault phase current by directly adopting a compensation strategy of an open fault; compensating the fluctuated magnetic motive force caused by the short circuit fault phase current by using non-fault phase current, so that the synthetic magnetic motive force is zero; eliminating torque ripple caused by the short circuit current; synthesizing the vectors of the compensating current of the steps 2 to 3 to obtain the short circuit fault tolerant current; performing control and simulation on Maxwell short circuit fault tolerant. According to the short circuit fault tolerant control method for the five-phase fault tolerant permanent magnet motor, one-phase short circuit fault tolerant control is performed on the motor according to the specific situation of the no-load counter electromotive force of the motor, so that the fault is equivalent to the output torque in a normal operating state; the torque ripple is reduced; the operation of the five-phase fault tolerant permanent magnet motor with a short circuit fault is realized.

Description

technical field [0001] The invention relates to a fault-tolerant control method for a short-circuit fault of a motor, in particular to a control method for a five-phase fault-tolerant permanent magnet motor. It is suitable for occasions that have high requirements on the reliability and continuity of the motor, such as aerospace and electric vehicles. Background technique [0002] With the continuous expansion of the application of motor drive systems in military, industrial and other fields, stable and reliable motor drive systems are particularly important for occasions with high reliability requirements such as aircraft and electric vehicles. To achieve system requirements through fault-tolerant control, improve system reliability, and reduce or avoid losses caused by failures has become the key to ensure system reliability. Therefore, fault-tolerant permanent magnet motors and high-reliability fault-tolerant control methods have received extensive attention. [0003] S...

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): H02P21/00
Inventor 赵文祥张步峰吉敬华唐建勋刘国海朱纪洪
Owner JIANGSU UNIV
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