Motor rotor assembly and motor provided with same
A technology for motor rotors and components, which is applied in the direction of electric components, electrical components, synchronous machine parts, etc., can solve the problems of increased cogging torque and torque ripple, increased vibration and working noise of double-air-gap motors, and achieves Reduce cogging torque and torque ripple, simple structure, and reduce working noise
Active Publication Date: 2017-12-12
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, when the double air gap motor rotates, the harmonic part of the magnetic field generated by it will increase its cogging torque and torque ripple, which will increase the vibration and operating noise of the double air gap motor
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0032] In describing the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "left", "right", "top", "bottom", "inner", "outer ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orien...
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
Login to View More Abstract
The invention discloses a motor rotor assembly and a motor provided with the motor rotor assembly. The motor rotor assembly comprises a rotor iron core, multiple permanent magnets and multiple magnetoresistive iron cores, wherein multiple magnetoresistive iron cores are uniformly arranged outside the rotor iron core at intervals along the circumferential direction of the rotor iron core, in the radial direction of the rotor iron core, each magnetoresistive iron core comprises an inner side surface and an outer side surface, at least one of the inner side surface and outer side surface of each magnetoresistive iron core comprises a center arc surface and an outer side arc surface, and the radius of the outer side arc surface is less than that of the center arc surface. According to the motor rotor assembly disclosed by the invention, a middle arc surface and the outer side arc surface are arranged on the inner side surface and / or the outer side surface of each magnetoresistive iron core, and magnetic field distribution in a motor can be adjusted, so that stress of the motor rotor assembly is more uniform, cogging torque and torque pulsation of the motor can be reduced, and further work noise of the motor can be reduced. The motor rotor assembly is simple in structure and convenient in processing and has strong practicability.
Description
technical field [0001] The invention relates to the technical field of motors, in particular to a motor rotor assembly and a motor having the same. Background technique [0002] Due to the advantages of compact structure, high torque density, and flexible layout, double air gap motors are gradually being widely used. Generally, the double air gap motor includes a stator, a reluctance iron core and a permanent magnet rotor. The stator, reluctance iron core and permanent magnet rotor are arranged sequentially from outside to inside in the radial direction of the double air gap motor. There is a gap between the stator and the permanent magnet rotor. In the related art, the reluctance core is formed in a sector shape. But when the double-air-gap motor rotates, the harmonic part of the magnetic field generated by it will increase its cogging torque and torque ripple, which will increase the vibration and operating noise of the double-air-gap motor. Contents of the invention ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/24H02K29/03H02K21/02H02K1/27
CPCH02K1/246H02K1/274H02K21/021H02K29/03H02K2213/03Y02T10/64
Inventor 吴迪陈金涛诸自强
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG