Permanent magnet rotary motor
A rotating electrical machine, permanent magnet technology, applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problem of rising material costs without considering savings The problem of increasing the amount of resources and magnets, etc., achieves the effect of cost reduction and resource saving
Active Publication Date: 2011-11-23
FUJI ELECTRIC CO LTD
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in the conventional examples described in the above-mentioned Patent Document 1 or 2, resource saving is not considered at all, and there are unsolved problems such as an increase in the amount of magnets and an increase in material cost in order to obtain a large torque.
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
[0025] Embodiments of the present invention will be described below with reference to the drawings.
[0026] figure 1 It is a sectional view showing one embodiment of the present invention. exist figure 1 Among them, the permanent magnet rotating electrical machine 1 is composed of a magnet-embedded synchronous rotating electrical machine. This permanent magnet rotating electrical machine 1 includes a cylindrical frame 2 . A stator 3 is arranged on the inner peripheral side of the cylindrical frame 2 , and a rotor 4 is arranged on the inner peripheral side of the stator 3 . The rotor 4 faces the stator 3 through a predetermined air gap G. As shown in FIG. The rotor 4 is rotatably supported by a rotating shaft 5 .
[0027] In the stator 3 , twelve slots 6 are formed at equal intervals in the circumferential direction on the inner peripheral surface side, and twelve pole teeth 7 are formed. The field coil 8 wound in the slit 6 is wound around each pole tooth 7 . Here, the ...
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 provides a permanent magnet rotary motor that obtains optimized large torque with small quantity of magnet volume so as to realize energy saving with low cost. In the permanent magnet rotary motor, a rotor (4) comprises the following components: a plurality of narrow slits (13) formed in a rotor core (12) that penetrate along axial direction; and a permanent magnet (14) inserted in the narrow slits (13) that make neighboring magnetic poles (11) along circumferential direction as haterpoles. The structure of the magnetic poles (11) is that a pair of narrow slits (13) are set in Vshape facing a rotating center shaft; radius of the rotor (4) is set to be alpha; radial distance embedment length from outer peripheral face from the rotor (4) to summit of the inner peripheral sideis set to be beta; mechanical angle as an opening angle of outer peripheral side of the pair of narrow slits is set as theta; embedment length beta, rotor radius alpha and the outer peripheral side opening angle theta are set, the optimized configuration index gamma that makes torque maximized is determined according to embedment length rate (beta; alpha) and opening angle rate (theta / 180) of theouter peripheral opening angle, which makes optimal allocation index as the determined optimal allocation index gamma.
Description
technical field [0001] The present invention relates to a permanent magnet rotating electrical machine including a stator and a rotor which rotate relative to the stator with a predetermined gap therebetween. Background technique [0002] An example of a conventional permanent magnet type rotating electrical machine includes a buried magnet type rotating electrical machine. [0003] This magnet-embedded rotating electric machine includes permanent magnets inside a rotor. In this rotary electric machine, the magnetic flux generated from the permanent magnet is added to the magnetic torque generated by the interlinkage magnetic flux with the field coil provided on the stator, and the reluctance (relaxation) torque utilizing the reluctance of the rotor core is used. This magnet-embedded rotating electric machine is widely used as a small, high-output, high-efficiency rotating electric machine. [0004] As one of the methods for increasing torque in a magnet-embedded rotating ...
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 Patents(China)
IPC IPC(8): H02K1/27H02K21/14
Inventor 岛田大志首藤雅夫广濑英男
Owner FUJI ELECTRIC CO LTD