CN105186743A - Rotor mechanism of permanent magnet motor - Google Patents
Rotor mechanism of permanent magnet motor Download PDFInfo
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- CN105186743A CN105186743A CN201510573567.2A CN201510573567A CN105186743A CN 105186743 A CN105186743 A CN 105186743A CN 201510573567 A CN201510573567 A CN 201510573567A CN 105186743 A CN105186743 A CN 105186743A
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- permanent magnet
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Abstract
The invention discloses a rotor mechanism of a permanent magnet motor, and a manufacturing method for the rotor mechanism. The rotor mechanism comprises a rotation shaft, a rotor bracket, a rotor core, a magnetic pole end part press plate, a core end part press plate, a permanent magnet, a permanent magnet sheath, an end part baffle and sheath pressing strips, wherein the rotor bracket is sleeved on the rotation shaft; the rotor core is sleeved and fixed on the rotor bracket; the end part baffle and the core end part press plate are fixed at the axial two ends of the rotor bracket respectively; grooves in the axial direction of the rotor bracket are circumferentially arranged on the outer wall of the rotor core at uniform intervals; the sheath pressing strips are arranged in gaps among the grooves in the outer wall of the rotor bracket; the permanent magnet sheath is fixed on the sheath pressing strips; a space for inserting and accommodating the permanent magnet is formed between the permanent magnet sheath and the grooves; and the magnetic pole end part press plate is fixed at one end, equipped with the core end part press plate, of the rotor bracket. According to the rotor mechanism of the permanent magnet motor and the manufacturing method for the rotor mechanism, the assembling process is simple, the magnetic steel installation is reliable and firm, the leakage flux among magnetic steels and the eddy current loss are reduced, and the rotor mechanism is suitable for the applications with a large number of magnetic poles and small circumferential intervals among the magnetic steels.
Description
Technical field
The invention belongs to permanent magnet field, more specifically, relate to a kind of rotor mechanism of magneto.
Background technology
Magneto have that structure is simple, volume is little, quality is light, efficiency is high and the shape and size of motor can be versatile and flexible etc. remarkable advantage.Thus range of application is very extensive, almost throughout the every field of Aero-Space, national defence, industrial and agricultural production and daily life.But in magneto running, motor permanent magnet is often vibrated and impacted, force environment is complicated severe, if permanent magnet is fixed undesirable, will loosen, cause inefficacy and the damage of magneto in running environment complicated and changeable.Therefore to the reliability and the durability that have rationally reliably fixedly been directly connected to magneto of permanent magnet in magneto.
The fixed form that the permanent magnet of surface-mounted permanent magnet machine is in daily use adopts bonded structural adhesive to be bonded on rotor surface by permanent magnet, and every block magnet steel all must be pressed on rotor surface, until bonding firm.
The shortcoming of this technology mainly contains: 1) in bonding process, because the density of bonded structural adhesive is large, poor fluidity, bonded structural adhesive cannot be filled in the gap of permanent magnet and supporting construction steel usually, cause permanent magnet fixing not firm, directly cause motor easily to vibrate in running, cause permanent magnet to come off; 2) in order to the area that the rounded internal surface increasing permanent magnet and structural steel fits tightly, permanent magnet one side surface also needs to be designed to circular arc, makes permanent magnet processed complex, increases cost; 3) cost of bonded structural adhesive is higher, causes the manufacturing cost of magneto high; 4) bonding equipment rate is not high, causes the production efficiency of magneto low, and particularly to large-scale direct-drive permanent magnet wind power generator, because motor size is large, cause needing the equipment of specific manufacture bonding to complete, modularized production inefficiency, cost is high.
Patent CN200520045576.6 utility model patent discloses a kind of Ru-Fe-Mn p-m rotor applied on wind-driven generator; this patent adopts and be provided with installing hole in the middle of magnet; fixing hole is provided with in rotor surface correspondence; by screw, magnet is fixed on rotor surface; simultaneously in order to strengthen permanent magnet constant intensity, be also provided with protective layer at the outer surface of permanent magnet.Although this technology solves the bonding illusive problem of viscose glue, also particular device is not needed, strong adaptability, the permanent magnet fixed range of all surface-mounted permanent magnet machines can be covered, but there is following shortcoming: 1) in order to increase fitting area, permanent magnet side also needs to be processed into the circular arc adapted with the circular surface of supporting construction, and processed complex, additionally increases cost; 2) permanent magnet mechanical property is not yielding but the easily damage that is hit, fixing hole is opened in the middle of permanent magnet, the stress that can increase permanent magnet concentrates characteristic, make motor in running, due to vibration and impact, easily cause the non-plastic fracture of permanent magnet to come off, greatly shorten the useful life of magneto, limit use occasion, use cannot be run in the presence of a harsh environment.
The technical scheme of patent CN102315710A is provided with pole shoe at rotor drum surface uniform, utilizes pole shoe and be arranged on the permanent magnet installing space that formed between the insulating barrier on rotor drum surface to install permanent magnet.This scheme mainly contains 2 shortcomings: one is that pole shoe shape is special, needs to occupy larger space, is not suitable for the occasion that between magnetic pole, circumferential interval is little; Two is that the loss of rotor drum surface eddy is comparatively large, is not suitable for high frequency magneto.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides a kind of rotor mechanism of magneto, its object is to provide a kind of assembly technology simple, robust installed by magnet steel, without the need to the rotor mechanism of special frock, and the technical problem that leakage field is large, eddy current loss is large solved between magnet steel, can be adapted to the progression that permanent magnet installs many especially, and between the little application in circumferential interval.
For achieving the above object, according to one aspect of the present invention, provide a kind of rotor mechanism of magneto, it is characterized in that, this rotor mechanism comprises rotating shaft, rotor field spider, rotor core, pole end piece pressing plate, core ends pressing plate, permanent magnet, permanent magnet sheath, end baffle, sheath press strip, wherein rotor field spider is set in rotating shaft, rotor core suit is fixed on described rotor field spider, end baffle and core ends pressing plate are individually fixed in the two ends of the axis of described rotor field spider, for fixing described rotor core;
The outer wall circumference uniform intervals of described rotor core is provided with the groove of the axial direction along described rotor field spider;
Sheath press strip is arranged at the gap between the described groove on described rotor field spider outer wall, and permanent magnet sheath is fixed on described sheath press strip, and forms the space of inserting and installing permanent magnet between described permanent magnet sheath and described groove;
The one end described rotor field spider being provided with core ends pressing plate is also fixed with pole end piece pressing plate, inserts the axial restraint after installing for fixedly realizing described permanent magnet.
Further, described rotor core inwall has slot, for engaging with the fixed strip be installed on described rotor field spider thus realizing the fixing of described rotor core.
Further, described rotor core is folded block by the iron core of circular ring type and is overrided to form.
Further, described rotor core has through hole, described permanent magnet sheath and described sheath press strip also have corresponding through hole, thus be fixed on described rotor field spider by screw and realize being fixed of described permanent magnet.
Further, the through hole on described rotor core folds block by described iron core to have laminated backlash hole and formed.
Further, the through hole on described rotor core be by circumferentially distribute and between leave the block core lamination stack of via clearance and described iron core and fold block and laminate thus formed.
In addition on the one hand, the invention also discloses a kind of method making the rotor mechanism of magneto, it is characterized in that, the method comprises the steps:
A the rotor field spider of cylinder is sleeved in rotating shaft by (), and at the circumferential fixing fixed strip vertically evenly distributedly of the appearance wall of described rotor field spider;
B () be anchor portion baffle plate on vertically end face of described rotor field spider, the circular ring type iron core laminating into rotor core is folded block block-by-block to be inserted on described rotor field spider, realize fixing by engaging with described fixed strip, and secured core end pressing plate on another axial end fixing described end baffle at described rotor field spider, thus described end baffle and described core ends pressing plate limit described rotor core in the axial direction;
C the outer wall circumference uniform intervals of the rotor core after having laminated described in () is formed with the groove of the axial direction along described rotor field spider, for installing permanent magnet, sheath press strip is filled in the gap between the groove on described rotor field spider outer wall, permanent magnet sheath is fixed on described sheath press strip, between described permanent magnet sheath and groove, forms the installing space of described permanent magnet;
Described permanent magnet is inserted in d installing space that () forms described permanent magnet between described permanent magnet sheath and groove, be fixed and clamped described permanent magnet sheath thus lock described permanent magnet further, rotor field spider is provided with fixed magnetic pole end, one end pressing plate of core ends pressing plate, inserting the axial restraint after installing for fixedly realizing described permanent magnet, forming described rotor mechanism thus.
In general, the above technical scheme conceived by the present invention compared with prior art, owing to have employed iron core fluting fixed permanent magnet, can be adapted to the progression that permanent magnet installs many, and between application in the little rotor mechanism in circumferential interval.
Accompanying drawing explanation
Fig. 1 is the motor rotor construction schematic diagram according to permanent magnet machine of the present invention;
Fig. 2 (a) is the A end view of the rotor field spider according to permanent magnet machine of the present invention;
Fig. 2 (b) is the B end view of the rotor field spider according to permanent magnet machine of the present invention;
Fig. 3 is the schematic diagram of the wedge shape fixed strip according to permanent magnet machine of the present invention;
Fig. 4 is the schematic diagram of the end baffle according to permanent magnet machine of the present invention;
Fig. 5 (a) is the global sections schematic diagram of the rotor core 3 according to permanent magnet machine of the present invention;
Fig. 5 (b) is the blown-up partial detail of the rotor core 3 according to permanent magnet machine of the present invention;
Fig. 5 (c) is the schematic three dimensional views of the rotor core 3 according to permanent magnet machine of the present invention;
Fig. 5 (d) is the through hole schematic diagram unshakable in one's determination of the rotor core 3 according to permanent magnet machine of the present invention;
Fig. 6 (a) is the schematic diagram of the permanent magnet sheath according to permanent magnet machine of the present invention;
Fig. 6 (b) is the schematic diagram be arranged on according to the sheath of permanent magnet machine of the present invention on permanent magnet;
Fig. 6 (c) is the partial schematic diagram installed according to the adjacent permanent magnet sheath of permanent magnet machine of the present invention.
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
1-rotating shaft, 2-rotor field spider, 3-rotor core, 4-pole end piece pressing plate, 5-core ends pressing plate; 6-permanent magnet; 7-permanent magnet sheath; 8-wedge shape fixed strip; 9-end baffle; 10-sheath press strip 11-circular ring type iron core folds block 12-core lamination stack
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each execution mode of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
The schematic diagram of permanent magnet machine rotor mechanism involved in the present invention as shown in Figure 1, wherein in order to show wedge shape fixed strip 8, end baffle 9 and permanent magnet 6, rotor core 3, core ends pressing plate 5 and pole end piece pressing plate 4 illustrate only a part, this structure mainly comprises with lower part: rotor field spider 2 is sleeved in rotating shaft 1, an entirety is connected into, for transmitting the torque of motor with rotor field spider 2, rotor field spider 2 two end faces are evenly provided with screwed hole, and end baffle 9 can be fixed on one end of rotor field spider 2 by screw, wedge shape fixed strip 8 is circumferentially evenly fixed on the surface of rotor field spider 2, rotor core laminations inwall has the notch adapted with wedge shape fixed strip 8, lamination is successively inserted in wedge shape fixed strip 8 engage, the radial direction realizing rotor core 3 is fixed, after having laminated, in rotor field spider 2 other end by screw even secured core end pressing plate 5, axial restraint is carried out to rotor core, rotor field spider 2 circumferential surface is circumferentially evenly provided with screwed hole, rotor core 3 is also being provided with rotor field spider 2 screwed hole relevant position the through hole adapted, same permanent magnet sheath 7 and sheath press strip 10 are also provided with through hole in corresponding place, can sheath press strip 10 be fixed on rotor field spider together with permanent magnet sheath 7 by screw, install the space being formed between rear permanent magnet sheath 7 and rotor core 3 and install permanent magnet, by the feeder connection near core ends pressing plate 5 one end, permanent magnet after piecemeal is successively inserted in the installing hole between permanent magnet sheath 7 and rotor core 3, after each pole permanent magnet inserts, near one end of core ends pressing plate 5, pole end piece pressing plate 4 and rotor field spider 2 are being fixed locked by screw, such permanent magnet is reliably arranged on rotor core 3.
1) rotor field spider
Rotor field spider 2 is main support structure of rotor, for magneto, permanent magnet all needs to be securely fixed on rotor field spider, in order to meticulously rotor field spider is described, A end face and the B end face of rotor field spider are described with Fig. 2 a and Fig. 2 b respectively: rotor field spider circumferential surface has circumferentially been evenly arranged screwed hole, wherein screwed hole 12 and screwed hole 14 are for stationary wedge fixed strip 8, and screwed hole 11 and screwed hole 13 are for fixed permanent magnet sheath 7; A end face is circumferentially evenly arranged screwed hole 18, for anchor portion baffle plate 9; Every three screwed holes of B end face are a unit and are along the circumferential direction evenly arranged, and the screwed hole 15 in unit is for secured core end pressing plate, and screwed hole 16 is for fixed magnetic pole end pressing plate 4.
2) wedge shape fixed strip
Wedge shape fixed strip 8 cross sectional shape is wedge shape, and can be T-shaped, trapezoidal and the shape such as swallow-tail form, its function mainly contains: one is that two is that radial direction fixes rotor core for the location when rotor core scene laminates.Its schematic diagram is as shown in Figure 3: hole 19 and hole 21 are counter sink, according to different sunk screw specifications, flat head screw counter sink or interior hexagonal counter sink can be set to, by the screwed hole 12 on these two counter sinks and rotor field spider and screwed hole 14, corresponding sunk screw can be used reliably to be fixed on rotor field spider 2 by wedge shape fixed strip 8, use sunk screw can make the surfacing of wedge shape fixed strip 8, conveniently rotor core is installed; Through hole 20 and through hole 22 match with the screwed hole 11 on rotor field spider and screwed hole 13, and permanent magnet sheath 7 can be fixed on rotor field spider 2 by these two through holes by hold-down screw.Wedge shape fixed strip 8 also can cancel installing hole 19 and 21 in addition, is directly welded on rotor field spider.
3) end baffle
The effect of end baffle 9 is mainly at axial fixed rotor iron core 3 and permanent magnet 6 on one side, prevent it from moving in a direction vertically, simultaneously in installation assembling process, axial end plate is preferentially fixed on one end of rotor field spider, limit an axial freedom of rotor core 3 and permanent magnet 6, conveniently laminate rotor core 3 and push and permanent magnet 6 is installed.End baffle 9 shape can be overall annular baffle, also can be the annular baffle of segmentation, its schematic diagram is as shown in Figure 4: end baffle 9 has circumferentially been evenly arranged through hole 23, adapt with the screwed hole 18 on the A end face of rotor field spider 2, end baffle can be fixed on the A end face of rotor field spider 2 by screw.
4) rotor core
Rotor core 3 is built up by the electrical steel sheet of high magnetic property, can reduce the eddy current loss in motor operation course, improves the efficiency of magneto.In order to clearly demonstrate the feature of rotor core, the global sections schematic diagram that Fig. 5 (a) is rotor core 3, Fig. 5 (b) is the blown-up partial detail of rotor core 3, Fig. 5 (c) is rotor core schematic three dimensional views, and Fig. 5 (d) is rotor core through hole schematic diagram.It is described as follows: transfer from one department to another iron core to be furnished with wedge shape installing hole 24, adapt with the shape of wedge shape fixed strip 8, and the two coordinates, and can position in rotor core 3 lamination process, and can radial fixed rotor iron core 3, permanent magnet mounting groove 25 on rotor core 3, adapts with permanent magnet 6 size, and for installing permanent magnet 6, the positioning boss 26 that both sides are protruded, can position in permanent magnet 6 installation process, convenient installation permanent magnet 6, the positioning boss of rotor core entirety is provided with through hole 27 and through hole 28, screwed hole 11 on itself and rotor field spider and screwed hole 13 adapt, permanent magnet sheath 7 can by the through hole on rotor core 3 and through hole 28, thus be fixed on rotor field spider 2 by the screw of fixed permanent magnet sheath 7, through hole 27 on rotor core 3 and the form processing of through hole 28 have two kinds, one is rotor core is folded block 11 entirety to be laminated on rotor field spider 2 to become after an entirety, concentrate and this sub-assemblies is punched, now the shape of through hole 27 and through hole 28 is preferably circular, two is fold block according to lead to the hole site size to rotor core to carry out particular design, several unit is divided into arrange in circumferential compartment of terrain core lamination stack 12, as shown in Fig. 5 (d), body feature is the same, interlock after laminating, can after having laminated, self-assembling formation through hole 27 and through hole 28, now shape of through holes is preferably rectangle.
5) permanent magnet sheath
Permanent magnet sheath becomes opening shape, as shown in Fig. 6 (a).Sheath scheme of installation is as shown in Fig. 6 (b): after rotor core 3 is laminated on rotor field spider 2, with the installing hole of screw through permanent magnet sheath 7, rotor core 3 through hole, directly permanent magnet sheath 7 is fixed on rotor field spider 2, the installing space installing permanent magnet is formed between permanent magnet mounting groove 25 on permanent magnet sheath 7 and rotor core 3, now the A end face of rotor field spider 2 has secured end baffle 9, so the installing space shape of permanent magnet 6 is one end sealing, other end opening, half through hole that cross sectional shape is similar to permanent magnet 6 shape, like this, the permanent magnet of axial segmentation can also be that B end face pushes into installing space successively from that one end of opening, after having pushed, pole end piece pressing plate 4 is fixed on the B end face of rotor field spider 2, the installation of permanent magnet can be completed with fixing.In addition, for the situation that circumferential distance between magnetic pole is little, when permanent magnet sheath is circumferentially evenly arranged, adjacent fixed feet can overlap and overlap together by adjacent permanent magnet sheath, with unified screw fastening, as shown in Fig. 6 (c).
According to the present invention, it is simple that the magnet structure proposed according to this patent has assembly technology, and robust installed by magnet steel, without the need to special frock.The leakage field between magnet steel can be reduced simultaneously, reduce eddy current loss, number of poles can be adapted to very well many, the occasion that magnet steel circumference interval is little.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the rotor mechanism of a magneto, it is characterized in that, this rotor mechanism comprises rotating shaft (1), rotor field spider (2), rotor core (3), pole end piece pressing plate (4), core ends pressing plate (5), permanent magnet (6), permanent magnet sheath (7), end baffle (9), sheath press strip (10), wherein rotor field spider (2) is set in rotating shaft (1), rotor core (3) suit is fixed on described rotor field spider (2), end baffle (9) and core ends pressing plate (5) are individually fixed in the two ends of the axis of described rotor field spider (2), for fixing described rotor core (3),
The outer wall circumference uniform intervals of described rotor core (3) is provided with the groove (25) along the axial direction of described rotor field spider (2);
Sheath press strip (10) is arranged at the gap between the described groove (25) on described rotor field spider (2) outer wall, permanent magnet sheath (7) is fixed on described sheath press strip (10), and forms the space of inserting and installing permanent magnet (6) between described permanent magnet sheath (7) and described groove (25);
The one end described rotor field spider (2) being provided with core ends pressing plate (5) is also fixed with pole end piece pressing plate (4), inserts the axial restraint after installing for fixedly realizing described permanent magnet (6).
2. the rotor mechanism of magneto as claimed in claim 1, it is characterized in that, described rotor core (3) inwall has slot (24), for engaging with the fixed strip (8) be installed on described rotor field spider (2) thus realizing the fixing of described rotor core (3).
3. the rotor mechanism of magneto as claimed in claim 1 or 2, it is characterized in that, described rotor core (3) is folded block (11) by the iron core of circular ring type and is overrided to form.
4. the rotor mechanism of magneto as claimed in claim 3, it is characterized in that, (3) have through hole to described rotor core, described permanent magnet sheath (7) and described sheath press strip (10) also have corresponding through hole, thus is fixed on described rotor field spider (2) by screw and realizes being fixed of described permanent magnet (6).
5. the rotor mechanism of magneto as claimed in claim 4, is characterized in that, the through hole on described rotor core (3) folds block (11) by described iron core to have laminated backlash hole and formed.
6. the rotor mechanism of magneto as claimed in claim 4, it is characterized in that, the through hole on described rotor core (3) be by circumferentially distribute and between leave via clearance block core lamination stack (12) fold block with described iron core and laminate thus formed.
7. make a method for the rotor mechanism of magneto, it is characterized in that, the method comprises the steps:
A the rotor field spider (2) of cylinder is sleeved in rotating shaft (1) by (), and at the circumferential fixing fixed strip (8) vertically evenly distributedly of the appearance wall of described rotor field spider (2);
B () be anchor portion baffle plate (9) on vertically end face of described rotor field spider (2), the circular ring type iron core laminating into rotor core (3) being folded block block-by-block is inserted on described rotor field spider (2), realize fixing by engaging with described fixed strip (8), and secured core end pressing plate (5) on another axial end of the fixing described end baffle (9) of described rotor field spider (2), thus described end baffle (9) and described core ends pressing plate (5) limit described rotor core (3) in the axial direction;
C the outer wall circumference uniform intervals of the rotor core (3) after having laminated described in () is formed with the groove (25) along the axial direction of described rotor field spider (2), for installing permanent magnet (6), sheath press strip (10) is filled in the gap between the groove (25) on described rotor field spider (2) outer wall, permanent magnet sheath (7) is fixed on described sheath press strip (10), between described permanent magnet sheath (7) and groove (25), forms the installing space of described permanent magnet (6);
Described permanent magnet (6) is inserted in d installing space that () forms described permanent magnet (6) between described permanent magnet sheath (7) and groove (25), be fixed and clamped described permanent magnet sheath (7) thus lock described permanent magnet (6) further, rotor field spider (2) is provided with the fixed magnetic pole end, one end pressing plate (4) of core ends pressing plate (5), inserting the axial restraint after installing for fixedly realizing described permanent magnet (6), forming described rotor mechanism thus.
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| CN201510573567.2A CN105186743B (en) | 2015-09-10 | 2015-09-10 | A kind of method for the rotor mechanism for making magneto |
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| CN201510573567.2A CN105186743B (en) | 2015-09-10 | 2015-09-10 | A kind of method for the rotor mechanism for making magneto |
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| CN105186743B CN105186743B (en) | 2017-11-14 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105490471A (en) * | 2015-12-29 | 2016-04-13 | 中电电机股份有限公司 | Lamination tool and method of rotor dovetail groove punching sheet |
| CN106253520A (en) * | 2016-08-16 | 2016-12-21 | 山西北方机械制造有限责任公司 | A kind of multipole direct-drive permanent magnet synchronous motor rotor structure device |
| CN107546893A (en) * | 2017-09-30 | 2018-01-05 | 日本电产凯宇汽车电器（江苏）有限公司 | The unilateral rivet pressing structure of stainless steel sleeve |
| CN109120120A (en) * | 2018-10-30 | 2019-01-01 | 永济优耐特绝缘材料有限责任公司 | A kind of rotor magnetic pole box laminates moulding process |
| CN109713819A (en) * | 2019-01-07 | 2019-05-03 | 南京航空航天大学 | A kind of high intensity Halbach permanent magnet array rotor structure |
| CN109921533A (en) * | 2019-04-11 | 2019-06-21 | 浙江大学 | The magnetic pole fixing device and permanent-magnetic wind driven generator of permanent-magnetic wind driven generator |
| CN110011443A (en) * | 2019-04-11 | 2019-07-12 | 浙江大学 | The magnetic pole fixing device and permanent-magnetic wind driven generator of permanent-magnetic wind driven generator |
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| CN110739787A (en) * | 2018-07-20 | 2020-01-31 | 广东德昌电机有限公司 | Motor and rotor thereof |
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| TWI691146B (en) * | 2019-05-17 | 2020-04-11 | 國立成功大學 | Composite rotor and motor using such |
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| CN105490471A (en) * | 2015-12-29 | 2016-04-13 | 中电电机股份有限公司 | Lamination tool and method of rotor dovetail groove punching sheet |
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| CN110739787B (en) * | 2018-07-20 | 2022-04-12 | 广东德昌电机有限公司 | Motor and rotor thereof |
| CN110739787A (en) * | 2018-07-20 | 2020-01-31 | 广东德昌电机有限公司 | Motor and rotor thereof |
| WO2020034266A1 (en) * | 2018-08-13 | 2020-02-20 | 中车株洲电机有限公司 | Permanent magnet motor and modular rotor structure thereof |
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| CN111181279B (en) * | 2019-04-11 | 2021-04-16 | 浙江大学 | Magnetic pole fixing device of permanent magnet wind driven generator and permanent magnet wind driven generator |
| CN111181273B (en) * | 2019-04-11 | 2021-11-26 | 浙江大学 | Magnetic pole fixing device of permanent magnet wind driven generator and permanent magnet wind driven generator |
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