CN202444393U - Permanent magnet auxiliary synchronous reluctance motor - Google Patents
Permanent magnet auxiliary synchronous reluctance motor Download PDFInfo
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- CN202444393U CN202444393U CN 201220079941 CN201220079941U CN202444393U CN 202444393 U CN202444393 U CN 202444393U CN 201220079941 CN201220079941 CN 201220079941 CN 201220079941 U CN201220079941 U CN 201220079941U CN 202444393 U CN202444393 U CN 202444393U
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- permanent magnet
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- reluctance motor
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Abstract
The utility model provides a permanent magnet auxiliary synchronous reluctance motor. The permanent magnet auxiliary synchronous reluctance motor provided by the utility model comprises a stator and a rotor, wherein the stator comprises a stator core and a centralized winding; the stator core is provided with a plurality of convex magnetic poles; the convex magnetic poles are provided with magnetic pole teeth and tooth boots; the width T of the tooth boots is larger than the width Lc of the magnetic pole teeth; the rotor comprises a rotor core and a plurality of permanent magnet groups; a plurality of permanent magnet groove groups are distributed on the rotor core uniformly; each permanent magnet groove group comprises at least two layers of permanent magnet grooves; each permanent magnet group comprises a permanent magnet arranged inside the corresponding permanent magnet groove; the permanent magnets in each permanent magnet group are of same polarity; two adjacent permanent magnets are opposite in polarity; the smallest interlayer distance gamma between two layers of adjacent permanent magnets in each permanent magnet group and the width T of the tooth boots meet the following relationship. According to the permanent magnet auxiliary synchronous reluctance motor provided by the utility model, the reluctance torque is utilized to the maximum extent; and the efficiency of the motor reaches a higher level.
Description
Technical field
The utility model relates to machine field, more specifically, relates to a kind of permanent magnetism assist in synchronization reluctance motor
Background technology
Internal permanent magnet synchronous motor is a kind of at the inboard one deck permanent magnet of placing of rotor, utilizes the motor of permanent-magnet torque and reluctance torque, and it mainly improves motor performance through the performance that improves permanent magnet, and common way is built-in rare-earth permanent magnet.But rare earth is non-renewable resources, and it costs an arm and a leg, so this kind motor limited use widely.
In order to practice thrift rare metal resources, alleviate environmental pressure, in conjunction with the two advantage of synchronous magnetic resistance motor and internal permanent magnet synchronous motor, exploitation is used a small amount of rare earth or is trend of the times without the permanent magnetism assist in synchronization reluctance motor of rare earth.The electromagnetic torque of permanent magnetism assist in synchronization reluctance motor is made up of reluctance torque and permanent-magnet torque, and its electromagnetic torque formula is following:
T＝p(L
d-L
q)i
di
q+pψ
PMi
q。
First is reluctance torque in the following formula, and second is permanent-magnet torque.Wherein p is the logarithm of motor pole, Ψ
PMBe the magnetic linkage that rotor permanent magnet produces on stator winding, Ld, Lq are respectively d axle and q axle inductance, i
d, i
qBe the component of stator current space vector on d axle, q direction of principal axis.Wherein, the d direction of principal axis is the direction of rotor field, is to be confirmed by the direction that connects each permanent magnet center and rotor center; The q direction of principal axis is to be confirmed by the boundary between the connection consecutive roots and the direction of rotor center.Through increasing the Ψ of second centre
PMAnd the difference through improving motor d axle and q axle inductance (raising q axle inductance or reduce d axle inductance) can realize the raising of motor output torque.Permanent magnetism assist in synchronization reluctance motor is as the combination of permagnetic synchronous motor and synchronous magnetic resistance motor; Utilized the reluctance torque of motor to greatest extent; And adopt permanent-magnet torque to assist; Combine the advantage of two kinds of motors, its electric efficiency and power factor are all higher, therefore more and more obtain paying attention to.
Stator adopts the magneto of concentrating winding, because its superior low frequency performance has obtained extensive use in the field of emphasis motor low frequency performances such as compressor of air conditioner.Chinese invention patent application CN96110043.5 proposes the permanent magnet interfloor distance of permanent magnetism assist type synchronous magnetic resistance motor is provided with assurance greater than 1/3 of stator tooth boots width, can guarantee that obvious decline does not take place motor q axle inductance.Through the practical study analysis, the above rule that proposes among the CN96110043.5 is for adopting the motor of concentrating winding and being not suitable for.Therefore need propose to improve the method for electric efficiency to the Optimal Structure Designing of the stator and rotor that adopt the permanent magnetism assist in synchronization reluctance motor of concentrating winding.
The utility model content
The utility model purpose is to provide a kind of permanent magnetism assist in synchronization reluctance motor.This permanent magnetism assist in synchronization reluctance motor improves the utilization of reluctance torque, and then improves efficiency of motor.
The utility model provides a kind of permanent magnetism assist in synchronization reluctance motor; Comprise: stator, said stator comprise stator core and concentrated winding, and said stator core has a plurality of convex magnetic poles; Form a stator slot between per two adjacent convex magnetic poles; Said concentrated winding is positioned at said stator slot, and said convex magnetic pole has magnetic pole tooth and the tooth boots that are positioned at said magnetic pole tooth end, and the width T of said tooth boots is greater than the width Lc of said magnetic pole tooth; Rotor; Comprise rotor core and a plurality of set of permanent magnets, wherein, the axle center with said rotor in said rotor core is that the center of circle is by the even a plurality of permanent magnet trough groups that distribute of circumferencial direction; Each permanent magnet trough group comprises two-layer at least permanent magnet trough; Each set of permanent magnets comprises the permanent magnet that is arranged at respectively in the corresponding permanent magnet trough, and each permanent magnet in each set of permanent magnets is same polarity, and two adjacent set of permanent magnets polarity are opposite; Wherein, relation below the width T of interlayer minimum range g between the adjacent two layers permanent magnet and said tooth boots satisfies in each set of permanent magnets:
Further, form the magnetic conduction passage in each set of permanent magnets between the adjacent two layers permanent magnet, near the terminal width G of the said magnetic conduction passage of said rotor periphery width of rebate W greater than said stator slot.
Further; Relation: 6P * A/ below the interpolar width A between the two adjacent permanent magnets group of said rotor and the width Lc of said magnetic pole tooth satisfy (Lc * S)=K; 0.15≤K≤0.85; Wherein, P is the number of pole-pairs of said permanent magnetism assist in synchronization reluctance motor, and S is the number of stator slots of said permanent magnetism assist in synchronization reluctance motor.
Further, it is characterized in that 0.2≤K≤0.8.
Further, the height L1 of said rotor is greater than the height L2 of said stator.
Further, the ratio of the height L2 of the height L1 of said rotor and said stator is less than or equal to 1.4.
Further, the residual magnetic flux density of each permanent magnet in each set of permanent magnets is any value between the 0.2T to 0.6T.
Further, each tooth boots is fined away along circumferential end and is formed the sharpening end.
Further, the ratio of the D outer diameter 2 of the D outer diameter 1 of said rotor and said stator is any value between 0.55 to 0.65.
Further, the shape of said permanent magnet is arc or box-shaped.
Further, the shape of said permanent magnet trough is arc or U-shaped or V-arrangement.
Permanent magnetism assist in synchronization reluctance motor according to the utility model designs rotor permanent magnet interfloor distance, and the reluctance torque of motor is maximized the use, and makes efficiency of motor reach higher level.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the permanent magnetism assist in synchronization reluctance motor sketch map according to first embodiment of the utility model;
Fig. 2 is the permanent magnetism assist in synchronization reluctance motor sketch map according to second embodiment of the utility model;
Fig. 3 is the permanent magnetism assist in synchronization reluctance motor sketch map according to the 3rd embodiment of the utility model;
Fig. 4 is the permanent magnetism assist in synchronization reluctance motor sketch map according to the 4th embodiment of the utility model;
Fig. 5 is the permanent magnetism assist in synchronization reluctance motor sketch map according to the 5th embodiment of the utility model;
Fig. 6 is first partial schematic diagram according to the permanent magnetism assist in synchronization reluctance motor of first embodiment;
Fig. 7 is second partial schematic diagram according to the permanent magnetism assist in synchronization reluctance motor of first embodiment;
Fig. 8 is that permanent magnet interlayer minimum range according to the permanent magnetism assist in synchronization reluctance motor of the utility model is to q axle inductive impact sketch map;
Fig. 9 is to the inductive impact sketch map according to width between the permanent magnet pole of the permanent magnetism assist in synchronization reluctance motor of the utility model;
Figure 10 is that permanent magnet interlayer magnetic conduction channel end width according to the permanent magnetism assist in synchronization reluctance motor of the utility model is to q axle inductive impact sketch map;
Figure 11 is according to the rotor of the permanent magnetism assist in synchronization reluctance motor of the utility model and stator contrast sketch map;
Figure 12 influences sketch map for the ratio according to the rotor height relative stator height of the permanent magnetism assist in synchronization reluctance motor of the utility model to the parameter of electric machine;
Figure 13 is that permanent magnet residual magnetic flux density according to the permanent magnetism assist in synchronization reluctance motor of the utility model is to the inductive impact sketch map;
Figure 14 is the end sharpening sketch map according to the permanent magnetism assist in synchronization reluctance motor stator convex magnetic pole tooth boots of the utility model; And
Figure 15 is to the inductive impact sketch map according to the stator of the permanent magnetism assist in synchronization reluctance motor of the utility model and rotor diameter ratio.
Embodiment
Below with reference to accompanying drawing and combine embodiment to specify the utility model.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Fig. 1 is the permanent magnetism assist in synchronization reluctance motor sketch map according to first embodiment of the utility model, and it has 6 set of permanent magnets (promptly having 6 utmost points), each set of permanent magnets has 2 layers of permanent magnet, permanent magnet trough and corresponding permanent magnet and is arc.Below will specify first embodiment with reference to figure 1, Fig. 6 to Figure 15.
As shown in Figure 1, the permanent magnetism assist in synchronization reluctance motor of first embodiment comprises stator 1 and rotor 4.
Find through lot of test and emulation; For adopting the permanent magnetism assist in synchronization reluctance motor of concentrating winding; As shown in Figure 6, if the two-layer permanent magnet interlayer minimum range g in each permanent magnet trough group of its rotor 4 less than 1/12 of the width T of tooth boots 22, can cause the magnetic conduction passage Y (referring to Fig. 7) between two-layer permanent magnet to take place saturated; The q axle inductance that causes permanent magnetism assist in synchronization reluctance motor descends rapidly, thereby causes the reluctance torque of motor can not obtain good use.In general, local saturated for magnetic conduction passage Y is not taken place, the width that magnetic conduction passage Y should be designed to everywhere is more or less the same.As shown in Figure 8; Increase to as permanent magnet interlayer minimum range g tooth boots 22 width T 1/12 after; Increase permanent magnet interlayer minimum range g again, the increasing degree of q axle inductance is also little, and because permanent magnet interlayer minimum range g increase can cause the permanent magnet attenuation; Thereby influence the anti-demagnetization capability of motor; Therefore permanent magnet interlayer minimum range g neither be the bigger the better, and in order to guarantee the anti-demagnetization capability of motor, relation was comparatively suitable below the interlayer minimum range g in each set of permanent magnets between adjacent two layers permanent magnet 7a, the 7b and the width T of tooth boots 22 satisfied:
As shown in Figure 7; Form magnetic conduction passage Y between interior adjacent two layers permanent magnet 7a of each set of permanent magnets and the 7b among first embodiment; Near the terminal width G of the magnetic conduction passage Y of the rotor 4 peripheries width of rebate W greater than stator slot, this width of rebate W is the distance between the relative end of adjacent two tooth boots 22.When the end of rotor 4 magnetic conduction passage Y in the face of the notch of stator slot the time; Q axle magnetic circuit X can receive very big influence and cause instantaneous inductor to take place obviously to descend; This can reduce the mean value of inductance on the one hand; Cause the reluctance torque output of motor to be affected, torque pulsation that on the other hand also can expanded motor.Be set to effectively to alleviate this situation through terminal width G greater than the width of rebate W of stator slot with rotor magnetic conduction passage Y.As can beappreciated from fig. 10 when the terminal width G of rotor magnetic conduction passage Y during greater than the width of rebate W of stator slot, the q axle inductance of motor can remain on a bigger level.
Referring to Fig. 6; Relation: 6P * A/ below the interpolar width A between the two adjacent permanent magnets group of the first embodiment rotor 4 and the width Lc of magnetic pole tooth 21 satisfy (Lc * S)=K; 0.15≤K≤0.85; Wherein, P is the number of pole-pairs of permanent magnetism assist in synchronization reluctance motor, and S is the number of stator slots of permanent magnetism assist in synchronization reluctance motor.Preferably, relation below width A relative stator facewidth Lc satisfies between permanent magnet pole, 6P * A/ (Lc * S)=K, 0.2≤K≤0.8.If width A designs to such an extent that the improper rotor local that also can cause is saturated between the interior permanent magnet pole of rotor.Find through test; (Lc * S)=K when 0.2≤K concerns, the saturated phenomenon that causes inductance obviously to descend between permanent magnet pole can not occur when interpolar width A relative stator facewidth Lc satisfies 6P * A/; Yet for interpolar width A is increased; With making permanent magnet toward moving near the direction of rotor periphery, this with need permanent magnet be tried one's best in order to increase q axle inductance that buried to go into internal rotor be contradiction, so interpolar width A can not be excessive.As can beappreciated from fig. 9, when 0.2≤K≤0.8, inductance can be because of unsaturated between permanent magnet pole and occur obviously descending.Simultaneously, also can too q axle inductance not occur near the surface of rotor 4 because of the permanent magnet in the rotor 4 descends rapidly.Shown in figure 11, rotor height L1 and stator height L2 with motor among first embodiment are arranged to different numerical value.Particularly; The height L1 of rotor 4 is greater than the height L2 of stator 1; This is provided with can be in the magnetic linkage that does not increase increase motor under the consumption situation of stator copper and the difference of d axle inductance and q axle inductance; Thereby increase the output torque of motor under unitary current, this is highly beneficial for the copper loss that reduces motor, raising efficiency of motor.In order to reach optimum efficiency, preferably, the length that rotor 4 stretches out at stator 1 two ends is approaching.In addition, the required Master Cost Master Cost more required than the height that increases stator of height that increases rotor descends a lot, and this is highly beneficial for the whole cost that reduces motor.
As can beappreciated from fig. 12 along with the ratio of rotor height L1 relative stator height L2 increases, the difference of the magnetic linkage of motor and d axle inductance and q axle inductance is increase to some extent all, but ratio reaches after 1.4, and these two numerical value basically no longer increase.Therefore in order to improve efficiency of motor and to reduce cost, it is proper that the ratio of the rotor height L1 of motor and stator height L2 is within 1 to 1.4 the scope.
Aspect permanent magnet material chooses; In order to increase the permanent-magnet torque of motor as far as possible; Generally all hope to choose more high performance permanent magnet, and the consumption of permanent magnet fills full permanent magnet trough as far as possible, but be not that the residual magnetic flux density of permanent magnet is high more good more aspect the utilizing of reluctance torque; Along with the raising of permanent magnet residual magnetic flux density, rotor also can occur saturated and cause inductance to descend.Wherein, the saturated influence to q axle inductance of rotor magnetic circuit is bigger.In addition, through discovering, it is certain saturated that an amount of permanent magnet residual magnetic flux density can make the separated magnetic bridge Z position of rotor as shown in Figure 7 occur, and this is very favorable for reducing d axle inductance.Because it is reluctance torque that permanent magnetism assist in synchronization reluctance motor is mainly exported torque; Particularly motor gets into high speed weak magnetic area territory; Therefore the proportion of reluctance torque in whole electromagnetic torque further strengthens, and chooses suitable permanent magnet material performance the influence of the difference of d axle inductance and q axle inductance is very important.
Expressed d axle, q axle inductance difference Changing Pattern among Figure 13 with the permanent magnet residual magnetic flux density; As can beappreciated from fig. 13; Choose any value of permanent magnetism residual magnetic flux density between 0.2T to 0.6T; D axle, the q axle inductance difference of motor are maintained than levels, make the reluctance torque of motor obtain best utilization.
Shown in I portion among Figure 14; The tooth boots 22 of each convex magnetic pole 20 are handled through fining away along circumferential end; After the processing of fining away; The end circumferential on the edge of tooth boots 22 formed the cutting face towards the surface of inboard, thereby thereby this end is fined away handles the formation sharpening end that narrows down in the past.In order to increase d direction of principal axis magnetic resistance, reduce the d axle inductance of motor, the permanent magnet trough thickness of motor must strengthen; But after thickness acquires a certain degree; Continue to increase the thickness of permanent magnet trough, d axle inductance also is difficult to descend, and reason is that the d axle magnetic line of force is difficult to directly pass permanent magnet trough; Its main walking path is to pass through along circumferential end from the tooth boots of the separated magnetic bridge Z of rotor and stator 22; In order to reduce d axle inductance, can but being the rotor mechanical strength, the thing followed descend reducing at a distance from magnetic bridge Z thickness.Therefore adopt the technology of fining away through tooth boots 22 along circumferential end, increase the magnetic resistance on the d axle magnetic line of force walking path, can arrive the purpose that reduces d axle inductance at stator.
Among first embodiment, any value of the ratio range of rotor diameter D1 and stator outer diameter D2 between 0.55 to 0.65.Different with the permanent magnetism assist in synchronization reluctance motor of individual layer permanent magnet; Adopt the permanent magnetism assist in synchronization reluctance motor of at least 2 layers of permanent magnet; In order to make permanent magnet go deep into rotor more; Be that permanent magnet is embedded in internal rotor, therefore need to adopt bigger rotor diameter to accomplish the q axle inductance of motor bigger.Figure 15 has represented the relation of inductance with rotor diameter relative stator external diameter ratio.But along with the increasing of rotor diameter D1, the area of stator slot can reduce, and this is disadvantageous for the copper loss that adopts more copper cash to reduce motor.According to result of the test, any value of ratio range between 0.55 to 0.65 of choosing rotor diameter D1 and stator outer diameter D2 can also can not strengthen the copper loss that causes motor because of resistance and occur significantly increasing so that the inductance difference of motor is bigger.
Fig. 2 is the permanent magnetism assist in synchronization reluctance motor sketch map according to second embodiment of the utility model.The rotor of this motor is 4 utmost points, 2 layers of every utmost points, U-shaped permanent magnet trough, box-shaped permanent magnet.
Fig. 3 is the permanent magnetism assist in synchronization reluctance motor sketch map according to the 3rd embodiment of the utility model.The rotor of this motor is 4 utmost points, 2 layers of every utmost points, V-arrangement permanent magnet trough, box-shaped permanent magnet.
Fig. 4 is the permanent magnetism assist in synchronization reluctance motor sketch map according to the 4th embodiment of the utility model.The permanent magnet of this motor is placed on the two ends of permanent magnet trough, and rotor is 4 utmost points, 2 layers of every utmost points, U-shaped permanent magnet trough, box-shaped permanent magnet.
Fig. 5 is the permanent magnetism assist in synchronization reluctance motor sketch map according to the 5th embodiment of the utility model.The rotor of this motor is 6 utmost points, 3 layers of every utmost points, arc-shaped permanent magnet groove, arc-shaped permanent magnet.
More than after the permanent magnetism assist in synchronization reluctance motor of second to the 5th embodiment adopts the technological means described in first embodiment, can increase the utilization of motor reluctance torque, improve efficiency of motor.
The permanent magnetism assist in synchronization reluctance motor of the utility model is the permanent magnetism assist in synchronization reluctance motor of many groups, multilayer magnet structure, and electric efficiency is higher, can be applied in the systems such as compressor of air conditioner, electric motor car and fan.
Above permanent magnetism assist in synchronization reluctance motor is installed as follows: step 1; Permanent magnet 7a, 7b are inserted permanent magnet trough 6a, 6b in the rotor core 5; Make satisfied
step 2 of width T of interlayer minimum range g and tooth boots 22 between adjacent two layers permanent magnet 7a in each set of permanent magnets, the 7b; The baffle plate capping is used at rotor core 5 two ends, thereby permanent magnet 7a, 7b are fixed among permanent magnet trough 6a, the 6b; Step 3, the rotor core 5 that capping is good are positioned over and assemble in the stator 1 of concentrating winding 3a, 3b.
From above description, can find out; The utility model the above embodiments have realized following technique effect: propose rotor permanent magnet interfloor distance is designed; The reluctance torque of motor is maximized the use; And the design that the combination anode-cathode distance designs, rotor is higher than stator etc., make the efficient of permanent magnetism assist in synchronization reluctance motor reach higher level.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (11)
1. permanent magnetism assist in synchronization reluctance motor comprises:
Stator (1); Said stator (1) comprises stator core (2) and concentrated winding (3a, 3b); Said stator core (2) has a plurality of convex magnetic poles (20), forms a stator slot between per two adjacent convex magnetic poles (20), and said concentrated winding (3a, 3b) is positioned at said stator slot; Said convex magnetic pole (20) has magnetic pole tooth (21) and is positioned at the tooth boots (22) of said magnetic pole tooth (21) end, and the width T of said tooth boots (22) is greater than the width Lc of said magnetic pole tooth (21);
Rotor (4); Comprise rotor core (5) and a plurality of set of permanent magnets; Wherein, To go up axle center with said rotor (4) be the center of circle by circumferencial direction a plurality of permanent magnet trough groups that evenly distribute in said rotor core (5), and each permanent magnet trough group comprises two-layer at least permanent magnet trough (6a, 6b), and each set of permanent magnets comprises the permanent magnet (7a, 7b) that is arranged at respectively in the corresponding permanent magnet trough (6a, 6b); Each permanent magnet (7a, 7b) in each set of permanent magnets is same polarity, and two adjacent set of permanent magnets polarity are opposite;
It is characterized in that,
Relation below the interlayer minimum range g in each set of permanent magnets between the adjacent two layers permanent magnet (7a, 7b) and the width T of said tooth boots (22) satisfy:
2. permanent magnetism assist in synchronization reluctance motor according to claim 1; It is characterized in that; Form magnetic conduction passage (Y) in each set of permanent magnets between the adjacent two layers permanent magnet (7a, 7b), near the terminal width G of the said magnetic conduction passage (Y) of said rotor (4) periphery width of rebate W greater than said stator slot.
3. permanent magnetism assist in synchronization reluctance motor according to claim 1 and 2 is characterized in that, relation below the width Lc of interpolar width A between the two adjacent permanent magnets group of said rotor (4) and said magnetic pole tooth (21) satisfies:
6P * A/ (Lc * S)=K, 0.15≤K≤0.85, wherein,
P is the number of pole-pairs of said permanent magnetism assist in synchronization reluctance motor,
S is the number of stator slots of said permanent magnetism assist in synchronization reluctance motor.
4. permanent magnetism assist in synchronization reluctance motor according to claim 3 is characterized in that 0.2≤K≤0.8.
5. permanent magnetism assist in synchronization reluctance motor according to claim 1 and 2 is characterized in that the height L1 of said rotor (4) is greater than the height L2 of said stator (1).
6. permanent magnetism assist in synchronization reluctance motor according to claim 5 is characterized in that, the ratio of the height L2 of the height L1 of said rotor (4) and said stator (1) is less than or equal to 1.4.
7. permanent magnetism assist in synchronization reluctance motor according to claim 1 and 2 is characterized in that, the residual magnetic flux density of each permanent magnet (7a, 7b) in each set of permanent magnets is any value between the 0.2T to 0.6T.
8. permanent magnetism assist in synchronization reluctance motor according to claim 1 and 2 is characterized in that, each tooth boots (22) is fined away along circumferential end and formed the sharpening end.
9. permanent magnetism assist in synchronization reluctance motor according to claim 1 and 2 is characterized in that, the ratio of the D outer diameter 2 of the D outer diameter 1 of said rotor (4) and said stator (1) is any value between 0.55 to 0.65.
10. permanent magnetism assist in synchronization reluctance motor according to claim 1 and 2 is characterized in that, the shape of said permanent magnet (7a, 7b) is arc or box-shaped.
11. permanent magnetism assist in synchronization reluctance motor according to claim 1 and 2 is characterized in that, the shape of said permanent magnet trough (6a, 6b) is arc or U-shaped or V-arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220079941 CN202444393U (en) | 2012-03-05 | 2012-03-05 | Permanent magnet auxiliary synchronous reluctance motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220079941 CN202444393U (en) | 2012-03-05 | 2012-03-05 | Permanent magnet auxiliary synchronous reluctance motor |
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| CN202444393U true CN202444393U (en) | 2012-09-19 |
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| CN 201220079941 Withdrawn - After Issue CN202444393U (en) | 2012-03-05 | 2012-03-05 | Permanent magnet auxiliary synchronous reluctance motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761221A (en) * | 2012-03-05 | 2012-10-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronous reluctance motor and mounting method thereof |
-
2012
- 2012-03-05 CN CN 201220079941 patent/CN202444393U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761221A (en) * | 2012-03-05 | 2012-10-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronous reluctance motor and mounting method thereof |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120919 Effective date of abandoning: 20130417 |
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