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

Electric excitation permanent magnet switch, reluctance motor for electric excitation permanent magnet switch and electric excitation method

A permanent magnet switch and electric excitation technology, which is applied in electric switches, magnetic/electric field switches, electric components, etc., can solve the problems of long magnetic circuit, large torque fluctuation, and hindering the excellent performance of switched reluctance motors.

Inactive Publication Date: 2011-09-14
戴珊珊
View PDF7 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of this type of motor still does not break through the conventional practice of using the stator shell and rotor core to form a magnetic circuit to generate torque in the traditional switched reluctance motor. There will inevitably be magnetic interference and leakage loss between them, these factors affect and hinder the full play of the excellent performance of switched reluctance motors, and limit the wide application of switched reluctance motors
At the same time, the existing switched reluctance motors have large torque fluctuations and high noise, which is not good for the life of the transmission parts. In short, the output torque, energy consumption and power volume ratio of the existing switched reluctance motors are not ideal.

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
  • Electric excitation permanent magnet switch, reluctance motor for electric excitation permanent magnet switch and electric excitation method
  • Electric excitation permanent magnet switch, reluctance motor for electric excitation permanent magnet switch and electric excitation method
  • Electric excitation permanent magnet switch, reluctance motor for electric excitation permanent magnet switch and electric excitation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The structure of this embodiment is as attached Figure 9 As shown, the structural section of this embodiment is as attached Figure 10 shown.

[0069] There are eight electric excitation permanent magnet switch assemblies in the stator of this embodiment, and these eight electric excitation permanent magnet switch assemblies are symmetrically fixed on the inner wall of the motor housing, and the soft magnet salient pole 102 and the soft magnet salient pole The protruding direction of 103 is perpendicular to the plane where the iron core 104 and the permanent magnet 106 are located, and points to the motor shaft 109 . The rotor shaft seat 108 is fixed to the rotating shaft 109, and the six strip iron cores are symmetrically and evenly fixed on the rotor shaft seat 108 with the rotating shaft 109 as the axis of symmetry. Each strip iron core has two salient poles, and the strip iron core The protruding directions of the salient poles 105 and the bar core salient poles ...

Embodiment 2

[0073] The structure of this embodiment is as attached Figure 12 shown.

[0074] This embodiment is further structured on the basis of the motor given in the first embodiment above. The motor given in the first embodiment above becomes a single motor in this embodiment. The three electric motors share one rotating shaft. as attached Figure 12As shown, the relative positional relationship between the stators of the three motor units is exactly the same, that is, there is no rotation angle difference between the magnetic salient pole radial centerlines of the stator switch assemblies of the three motor units, and the rotors of the three motor units There is a rotation angle difference α between the radial centerlines of the salient poles of the bar core, and the attached Figure 13 A sectional view of the motor monomer at the front is given, with Figure 14 A sectional view of the motor monomer in the middle layer is given, with Figure 15 A sectional view of the motor c...

Embodiment 3

[0078] The structure of this embodiment is as attached Figure 16 And attached Figure 17 shown.

[0079] In this embodiment, the stator is composed of eight electrically-excited permanent-magnet switch assemblies, which are symmetrically and evenly fixed in the motor casing, and the eight electrically-excited permanent-magnet switch assemblies on the stator are magnetically connected to each other. In the isolated state, the protruding direction of the soft magnetic salient pole 305 in the stator electric excitation permanent magnet switch assembly is perpendicular to the plane where the iron core excitation coil 301 and the permanent magnet 303 are located, and points to the motor shaft 304 . Each stator electric excitation permanent magnet switch assembly has two magnetic salient poles, the two magnetic salient poles are axially distributed along the rotating shaft, and the eight switch assemblies have 8×2 magnetic salient poles in total. The rotor of this embodiment is c...

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 an electric excitation permanent magnet switch, a reluctance motor for the electric excitation permanent magnet switch and an electric excitation method. In the electric excitation permanent magnet switch, two magnetic poles of a permanent magnet are respectively connected with both ends of an iron core on which magnet exciting coils are wound by two soft magnets; and salient poles are arranged on the soft magnets. In the reluctance motor, the switch is used as basic components of a stator and a rotor, and the two magnetic salient poles of each component are arranged in an axial direction; the salient poles of the stator component and the rotor component are arranged oppositely, and air gaps are reserved between the salient poles; and the magnet exciting coils of the stator component and the rotor component at the axial symmetrical position are connected in series or in parallel and then are used as a phase line respectively to be connected to an excitation control power supply. The invention also provides a combination motor formed by connecting motor monomers by using a shaft in a rotary and dislocation mode and a method for the simultaneous diphase electric excitation of the stator component. The switch and the motor save energy, and have low magnetic loss and high magnetic efficiency; and the combination motor with the diphase electric excitation realizes the subdivision of stepper angles, and improves running stability, control accuracy and output power.

Description

technical field [0001] The invention relates to the technical field of switched reluctance motors, in particular to an electrically excited permanent magnet switch, a switched reluctance motor formed by utilizing the electrically excited permanent magnet switch structure, and an electrical excitation method thereof. Background technique [0002] The current switched reluctance motor adopts a double-salient pole structure. The rotor is only laminated by silicon steel sheets. There is neither winding nor permanent magnet. The field winding is wound on each pole of the stator. By passing the excitation current to the stator field winding in turn, The interaction between the salient poles of the stator and the salient poles of the rotor produces torque. The working principle of the switched reluctance motor follows the "principle of minimum reluctance". After power is applied, the magnetic circuit tends to change to the path of minimum reluctance. When the salient poles of the ...

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): H01H51/01H02K29/00
CPCH01H36/00H02K41/033H02K2201/15H02K21/44
Inventor 戴珊珊陆晓峰
Owner 戴珊珊
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