Six-phase permanent magnet fault-tolerant motor control system

A technology of permanent magnet fault tolerance and motor control, applied in control systems, AC motor control, electrical components, etc., can solve problems affecting system reliability, increasing volume and weight, multi-power devices, etc., and achieves simple structure, small size, low cost effect

Inactive Publication Date: 2010-03-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF0 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that more power devices are needed, which increases the volume and weight. For example, a six-phase permanent m

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
  • Six-phase permanent magnet fault-tolerant motor control system
  • Six-phase permanent magnet fault-tolerant motor control system
  • Six-phase permanent magnet fault-tolerant motor control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] specific implementation plan

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] The circuit topology proposed by the invention patent for the six-phase permanent magnet fault-tolerant motor control system is as follows: image 3 connect. When the motor system runs without fault, it is a six-phase symmetrical system composed of two sets of three-phase subsystems. Each set of three-phase systems applies a mature three-phase motor control algorithm, such as vector control, i d = 0 control algorithm or direct torque control algorithm.

[0020] Inverter faults mainly include short-circuit faults of power switching devices, open-circuit faults of power switching devices, short-circuit faults at the end of motor windings, and open-circuit faults of windings. When any phase in any set of three-phase subsystem fails, take phase A as an example:

[0021] 1. The power switching device ...

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 novel six-phase permanent magnet fault-tolerant motor control system in a half-bridge circuit structure, which has the characteristic of failure isolation. The system comprises a six-phase permanent magnet fault-tolerant motor and two paths of three-phase half-bridge inverting circuits. Aiming at the six-phase permanent magnet fault-tolerant motor, one end of an A-phasewinding, one end of a C-phase winding and one end of an E-phase winding are connected with a midpoint of a corresponding bridge arm, and the lower end of the bridge arm is connected with the negativeend of a direct current bus after being connected in series with a normally-closed contact point and a PTC resistor; the other ends of all windings are connected to form a Y-shaped connecting method after being connected in series with the other normally-closed contact point; and the two normally-closed contact points in the same phase belong to the same double-connecting relay. The midpoint of the Y-shaped connecting method is connected with a midpoint of an equivalent bus series capacitor after being connected in series with the normally-opened contact point K1 to form a set of three-phase Y-shaped drive subsystems. Similarly, other three phases form a set of three-phase drive subsystems by the circuit structure. When any phase in any set generates failure, a failure subsystem is automatically reconstructed into a two-phase system, and the motor system enters a fault-tolerant running state by a failure state two-phase control algorithm of a common three-phase motor.

Description

technical field [0001] The patent of the present invention relates to a design method of a six-phase permanent magnet fault-tolerant motor control system. Background technique [0002] In some occasions with high reliability requirements, the motor drive system must be specially designed, such as the aircraft electric actuation system, which is one of the key technologies of the multi-electric aircraft system. Since electric actuation systems are widely used in key electric drive systems such as aircraft brakes, rudder control, and oil pumps, the electric actuation system must have strong safety reliability and fault tolerance. The power converter and driving motor are the core parts of the electric actuator, so designing a set of motor body and its control system with fault-tolerant function has become the key technology of the electric actuator. It is precisely because of the awareness of this problem that the research on the reliability technology of the electric actuati...

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): H02P27/06H02H7/085H02M7/48
Inventor 黄文新许顺胡育文郝振洋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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