Space vector pulse width modulation method for multiphase motor fault

A space vector pulse width, multi-phase motor technology, applied in the direction of motor control, vector control system, motor generator control, etc., can solve the problems of not considering the common mode voltage, shortening the service life of the motor, and damaging the motor bearing, etc., to achieve improved Effects of service life, torque ripple reduction, and switching loss reduction

Pending Publication Date: 2021-11-02
HARBIN UNIV OF SCI & TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for the fault-tolerant control strategy of multi-phase PMSM, the traditional fault-tolerant control methods are mostly hysteresis control and direct torque control (DTC), but these two methods do not consid

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
  • Space vector pulse width modulation method for multiphase motor fault
  • Space vector pulse width modulation method for multiphase motor fault
  • Space vector pulse width modulation method for multiphase motor fault

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0043] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and number of componen...

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 space vector pulse width modulation method for a multiphase motor fault, and belongs to the technical field of motor control. The invention aims to solve the problem that the common-mode voltage cannot be inhibited by the existing fault-tolerant control method in the case of the open-phase fault of the motor. A novel space voltage vector diagram is obtained by adopting a magnetomotive force conservation principle before and after phase failure and taking maximum torque output as a constraint condition, ten non-zero voltage vectors with the maximum amplitude and the minimum common-mode voltage amplitude are selected, the space voltage vector diagram is divided into ten sectors, sector judgment is carried out on the reference voltage vector, the action sequence of all basic voltage vectors is determined with the minimum number of switching tubes acting each time as an optimization target, and the action sequence and action time of the basic voltage vectors are calculated. According to the invention, the operation performance of the multi-phase motor in a fault state is obviously improved, and the reliability of a speed regulation system is effectively improved.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a space vector pulse width modulation method for multi-phase motor faults. Background technique [0002] Multiphase permanent magnet synchronous motor (PMSM) has been widely used in various industries in recent years because of its performance advantages such as low voltage, high power, high efficiency, fault tolerance, and low noise. At the same time, with the development of microelectronics and modern power electronics technology, fault-tolerant technology has been widely used in many application fields with high reliability requirements. At present, for the fault-tolerant control strategy of multi-phase PMSM, the traditional fault-tolerant control methods are mostly hysteresis control and direct torque control (DTC), but these two methods do not consider the problem of common-mode voltage, which will induce A high-amplitude shaft voltage is generated and a shaft current is formed...

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): H02P21/00H02P25/022H02P25/22H02P29/024H02P29/028H02P29/032
Inventor 高晗璎刘雪晨
Owner HARBIN UNIV OF SCI & 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