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

Composite permanent-magnet invisible magnetic pole and brushless electromagnetic hybrid excitation driving motor

A technology of invisible magnetic pole and hybrid excitation, applied in synchronous motors with stationary armatures and rotating magnets, electric components, magnetic circuit rotating parts, etc. problem, to achieve the effect of less magnetic flux leakage

Inactive Publication Date: 2016-07-27
SHANDONG UNIV OF TECH
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the rotors of the permanent magnet drive motors used in electric vehicles mostly adopt the permanent magnet external embedded structure, such as the existing technology, patent name: brushless DC motor rotor, patent number: ZL200920116549.1, discloses the following technical solutions, including the rotor Iron core, rotating shaft and permanent magnet. The rotor iron core is composed of punched sheets and connected together. The rotating shaft and the rotor iron core are fixedly connected. There are even numbers of T-shaped wedges evenly distributed on the outer surface of the rotor iron core. Adjacent T-shaped wedges Slots are formed between the blocks, and the permanent magnets are correspondingly embedded in the slots. The permanent magnets of the rotor with this structure directly face the air gap. Under the action of the armature reaction of the impact current, irreversible demagnetization may occur. Once the permanent magnets form irreversible demagnetization, The efficiency of the driving motor is reduced, and the power and torque drop rapidly, and its performance needs to be further improved

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
  • Composite permanent-magnet invisible magnetic pole and brushless electromagnetic hybrid excitation driving motor
  • Composite permanent-magnet invisible magnetic pole and brushless electromagnetic hybrid excitation driving motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings:

[0013] The composite permanent magnet invisible magnetic pole and brushless electromagnetic hybrid excitation drive motor is composed of a front end cover 9, a rear end cover 1, a casing 3, a hybrid excitation rotor, and a stator 4. It is characterized in that: the hybrid excitation rotor is composed of a carbon brushless slip ring structure. It is composed of claw pole type electric excitation rotor and composite permanent magnet invisible magnetic pole rotor;

[0014] The composite permanent magnet invisible pole rotor is composed of a shaft 2, a rectangular permanent magnet steel 8, a tile permanent magnet steel 5, a rotor iron core 6, and a pear-shaped slot magnetic isolation air gap 7. The rotor iron core 6 is evenly distributed with an even number of penetrating rotors. The radial rectangular groove with the thickness of the iron core 6, the outer end of the radi...

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 provides a composite permanent-magnet invisible magnetic pole and brushless electromagnetic hybrid excitation driving motor, and belongs to the technical field of a motor electrical device of an electric vehicle. The hybrid excitation driving motor comprises a front end cover, a rear end cover, an enclosure, a rotor and a stator, wherein rectangular permanent-magnet steel is separately embedded into a radial rectangular groove and an arc groove in a rotor iron core, the permanent-magnet steel can be effectively prevented from generating irreversible demagnetization under the effect of armature reaction of impact current and is enabled not to loss magnetism, a magnetic field in an air gap of a driving motor is jointly provided by the permanent-magnet and an electric excitation magnetic winding, the generated magnetic field directly faces the air gap, and less magnetic leakage is achieved.

Description

technical field [0001] The invention provides a composite permanent magnet invisible magnetic pole and brushless electromagnetic hybrid excitation drive motor, which belongs to the technical field of electric vehicle motors and appliances. Background technique [0002] At present, the rotors of the permanent magnet drive motors used in electric vehicles mostly adopt the permanent magnet external embedded structure, such as the existing technology, patent name: brushless DC motor rotor, patent number: ZL200920116549.1, discloses the following technical solutions, including the rotor Iron core, rotating shaft and permanent magnet. The rotor iron core is composed of punched sheets and connected together. The rotating shaft and the rotor iron core are fixedly connected. There are even numbers of T-shaped wedges evenly distributed on the outer surface of the rotor iron core. Adjacent T-shaped wedges Slots are formed between the blocks, and the permanent magnets are correspondingl...

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): H02K21/14H02K21/02H02K29/00H02K1/27
CPCH02K21/14H02K1/276H02K21/028H02K29/00
Inventor 李东兴张学义胡文静李爱军
Owner SHANDONG UNIV OF TECH
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