CN204376667U - Permagnetic synchronous motor and there is its compressor - Google Patents

Permagnetic synchronous motor and there is its compressor Download PDF

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Publication number
CN204376667U
CN204376667U CN201520080442.1U CN201520080442U CN204376667U CN 204376667 U CN204376667 U CN 204376667U CN 201520080442 U CN201520080442 U CN 201520080442U CN 204376667 U CN204376667 U CN 204376667U
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CN
China
Prior art keywords
groove
internal layer
synchronous motor
permagnetic synchronous
rotor
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Expired - Fee Related
Application number
CN201520080442.1U
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Chinese (zh)
Inventor
张尊睦
杨泾涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Midea Toshiba Compressor Corp
Guangdong Meizhi Compressor Co Ltd
Anhui Meizhi Precision Manufacturing Co Ltd
Original Assignee
Guangdong Meizhi Compressor Co Ltd
Anhui Meizhi Precision Manufacturing Co Ltd
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Filing date
Publication date
Application filed by Guangdong Meizhi Compressor Co Ltd, Anhui Meizhi Precision Manufacturing Co Ltd filed Critical Guangdong Meizhi Compressor Co Ltd
Priority to CN201520080442.1U priority Critical patent/CN204376667U/en
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Publication of CN204376667U publication Critical patent/CN204376667U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of permagnetic synchronous motor and there is its compressor.Wherein, permagnetic synchronous motor comprises: stator; And be located at the rotor of stator interior, rotor has the many groups magnet groove circumferentially distributed, and often organizes magnet groove and comprises outer groove and inner layer groove, on the cross section of rotor, outer groove extends along the circumference of rotor, and inner layer groove is positioned at the radially inner side of outer groove and inner layer groove is V-shaped.According to permagnetic synchronous motor of the present utility model, the outer groove extended by the circumference arranged on rotor along rotor and be positioned at the radially inner side of outer groove and V-shaped inner layer groove, effectively can increase the q axle inductance of motor, and then increase the difference of quadrature axis inductance and d-axis inductance, thus the reluctance torque of permagnetic synchronous motor can be increased.

Description

Permagnetic synchronous motor and there is its compressor
Technical field
The utility model relates to technical field of refrigeration equipment, specifically, particularly relates to a kind of permagnetic synchronous motor and has its compressor.
Background technology
Permagnetic synchronous motor can be divided into surface-mount type permagnetic synchronous motor (SMPM) and internal permanent magnet synchronous motor (IPM) usually according to the difference of permanent magnet installation site on rotor.Built-in permagnetic synchronous motor is because permanent magnet is embedded in rotor core, and the fastness of rotor strengthens and can reduce the eddy current of permanent magnet inside.In addition, between permanent magnet internal permanent magnet synchronous motor d axle (d-axis), q axle (quadrature axis), inductance there are differences, and can also utilize the reluctance torque of motor, be improved the efficiency of motor except can utilizing the permanent-magnet torque of motor.Therefore its application is more and more extensive, and built-in permagnetic synchronous motor electromagnetic torque is made up of permanent-magnet torque and reluctance torque, and its Formula of Electromagnetic is as follows:
T=p×ΨPM×iq+p×(Ld-Lq)×id×iq
In formula, Section 1 is permanent-magnet torque, and Section 2 is reluctance torque;
Wherein, p is motor number of pole-pairs, and Ψ PM is the magnetic linkage that rotor permanent magnet produces on stator winding, and Ld, Lq are respectively d axle and q axle inductance, and id, iq are the component of stator current space vector on d, q direction of principal axis.
Therefore, by increasing the middle Ψ PM of Section 1 and the raising of motor output torque can being realized by the difference (improve q axle inductance or reduce d axle inductance) improving motor d axle inductance and q axle inductance.
Permanent magnetism auxiliary type synchronous magnetic resistance motor is as the combination of permagnetic synchronous motor and synchronous magnetic resistance motor, make use of 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 come into one's own.In correlation technique, the permagnetic synchronous motor of individual layer magnet groove structure, the difference of its quadrature axis inductance and d-axis inductance is little, causes reluctance torque not ideal enough.
Utility model content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the utility model proposes a kind of permagnetic synchronous motor, described permagnetic synchronous motor has the advantage that Driving Torque is high, power output is high.
The utility model also proposes a kind of compressor, and described compressor has permagnetic synchronous motor as above.
Provide a kind of permagnetic synchronous motor according to an aspect of the present utility model, comprising: stator; And be located at the rotor of described stator interior, described rotor has the many groups magnet groove circumferentially distributed, often organize described magnet groove and comprise outer groove and inner layer groove, on the cross section of described rotor, described outer groove extends along the circumference of described rotor, and described inner layer groove is positioned at the radially inner side of described outer groove and described inner layer groove is V-shaped.
According to permagnetic synchronous motor of the present utility model, the outer groove extended by the circumference arranged on rotor along rotor and be positioned at the radially inner side of outer groove and V-shaped inner layer groove, effectively can increase the q axle inductance of motor, and then increase the difference of quadrature axis inductance and d-axis inductance, thus the reluctance torque of permagnetic synchronous motor can be increased.
In an embodiment of the present utility model, described outer groove comprises: the skin for holding permanent magnet holds space; And two outer side grooves, described two outer side grooves are located at described skin and hold on two relative sidewalls in space, the opening of each described outer side groove holds interior volume towards described skin, and at least one sidewall of each described outer side groove is against on the periphery wall of described permanent magnet.
Preferably, described outer side groove is located on the sidewall on the Width of described outer groove.
Alternatively, the sidewall inside the close described rotor radial of described outer side groove is against on the periphery wall of described permanent magnet.
Preferably, non-magnetic layer is filled with in described two outer side grooves.
Preferably, the center of described magnet groove about described magnet groove and the line symmetry of described rotor center.
In embodiments more of the present utility model, second groove that described inner layer groove comprises first groove and is communicated with described first groove, on the cross section of described rotor, described first groove and described second groove all linearly extend, and the angle of described first groove and described second groove is obtuse angle.
Further, described first groove the first internal layer comprised for holding permanent magnet holds space, be positioned at described first internal layer holds the first internal layer side groove of the one end in space and is positioned at the first internal layer side half groove that described first internal layer holds the other end in space, and the opening of described first internal layer side groove holds interior volume and at least one sidewall of described first internal layer side groove is against on the periphery wall of described permanent magnet towards described first internal layer; Described second groove the second internal layer comprised for holding permanent magnet holds space, be positioned at described second internal layer holds the second internal layer side groove of the one end in space and is positioned at the second internal layer side half groove that described second internal layer holds the other end in space, the opening of described second internal layer side groove holds interior volume towards described second internal layer, at least one sidewall of described second internal layer side groove is against on the periphery wall of described permanent magnet, and described second internal layer side half groove is communicated with described first internal layer side half groove.
Preferably, non-magnetic layer is filled with in described first internal layer side groove and described second internal layer side groove.
Another aspect provides a kind of compressor according to of the present utility model, comprise permagnetic synchronous motor as above.
According to compressor of the present utility model, the outer groove extended by the circumference arranged on rotor along rotor and be positioned at the radially inner side of outer groove and V-shaped inner layer groove, effectively can increase the q axle inductance of motor, and then increase the difference of quadrature axis inductance and d-axis inductance, thus the reluctance torque of permagnetic synchronous motor can be increased.
Accompanying drawing explanation
Fig. 1 is the profile of the permagnetic synchronous motor according to the utility model embodiment;
Fig. 2 is the partial structurtes schematic diagram of the permagnetic synchronous motor according to the utility model embodiment;
Fig. 3 is the partial structurtes schematic diagram of the rotor of permagnetic synchronous motor according to the utility model embodiment;
Fig. 4 is the partial structurtes schematic diagram of the rotor of permagnetic synchronous motor according to the utility model embodiment.
Reference numeral:
Permagnetic synchronous motor 100,
Stator 110,
Rotor 120, magnet groove 121,
Outer groove 122, skin holds space 1221, outer side groove 1222,
Inner layer groove 123, first groove 1231, first internal layer holds space 1232, first internal layer side groove 1233, first internal layer side half groove 1234,
Second groove 1235, second internal layer holds space 1236, second internal layer side groove 1237, second internal layer side half groove 1238,
Non-magnetic layer 124,
Permanent magnet 130.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
The permagnetic synchronous motor 100 according to the utility model embodiment is described in detail referring to Fig. 1-Fig. 4.It should be noted that, in embodiment of the present utility model, only list the situation that number of stator slots is 48 grooves, rotor number of poles is 8 poles, but the utility model is not limited thereto.Other number of stator slots, the combination of rotor number of poles, adopt the identical implementation method with embodiment of the present utility model, also can reach same beneficial effect.
As Figure 1-Figure 4, according to the permagnetic synchronous motor 100 of the utility model embodiment, comprising: stator 110 and rotor 120.
Specifically, as shown in Figure 1, it is inner that rotor 120 is located at stator 110, and rotor 120 has the many groups magnet groove 121 circumferentially distributed.It should be noted that, often to organize magnet groove 121 along the Axis Extension of rotor 120 and run through rotor 120.Magnet groove 121 can comprise outer groove 122 and inner layer groove 123, and on the cross section of rotor 120, outer groove 122 extends along the circumference of rotor 120.Outer groove 122 can be formed as the outer groove of linear pattern, and the linear vertical at the outer groove place of linear pattern is in a radius of rotor 120.Such as, as shown in Figure 2, OL is a radius of rotor 120, the linear vertical at the outer groove place of linear pattern and straight line OL.In other words, the straight line at the outer groove place of linear pattern is parallel with the tangent line of on rotor 120.
Inner layer groove 123 is positioned at the radially inner side (as Figure 1-Figure 4 direction, medial and lateral) of outer groove 122 and inner layer groove 123 is V-shaped.Preferably, V-type inner layer groove by outer for linear pattern groove envelope in the inside of V-type inner layer groove.As shown in Figures 2 and 3, between inner layer groove 123 and outer groove 122, there is gap, thus, be convenient to the good path that formation can be flow through for q axle magnetic flux (as shown in arrow q in Fig. 2 and Fig. 3), thus increase q axle inductance L q, and then increase the difference of q axle inductance L q and d-axis inductance L d, increase the reluctance torque (, reluctance torque can be expressed as: p × (Lq-Ld) × id × iq) of permagnetic synchronous motor 100 here.
According to the permagnetic synchronous motor 100 of the utility model embodiment, the outer groove 122 extended by the circumference arranged on rotor 120 along rotor 120 and the radially inner side being positioned at outer groove 122 and V-shaped inner layer groove 123, effectively can increase the q axle inductance of motor, and then increase the difference of quadrature axis inductance and d-axis inductance, thus the reluctance torque of permagnetic synchronous motor 100 can be increased.
As shown in Figure 3, in an embodiment of the present utility model, outer groove 122 can comprise: skin holds space 1221 and two outer side grooves 1222.Wherein, skin holds space 1221 and may be used for holding permanent magnet 130.Two outer side grooves 1222 are located at skin and hold on two relative sidewalls in space 1221, and the opening of outer side groove 1222 holds inside, space 1221 towards skin, and at least one sidewall of outer side groove 1222 is against on the periphery wall of permanent magnet 130.Thus, permanent magnet 130 can be limited to skin and hold in space 1221, prevent rotor 120 when rotated permanent magnet 130 hold in space 1221 at skin and rock.Preferably, as shown in figs 2-4, outer side groove 1222 is located on the sidewall on the Width of outer groove 122.Here, the Width of outer groove 122 can refer to the a-a direction shown in Fig. 2 and Fig. 4.Alternatively, the sidewall of close rotor 120 radially inner side of outer side groove 1222 is against on the periphery wall of permanent magnet 130.Thus, rotor 120 is in the process of rotating, and outer side groove 1222 can limit the position of permanent magnet 130, thus permanent magnet 130 can be limited to skin and hold in space 1221.
Further, as shown in figs 2-4, inner layer groove 123 can comprise: first groove 1231 and second groove 1235 be communicated with first groove 1231.Wherein, first groove 1231 and second groove 1235 all linearly extend, and on the cross section of rotor 120, the angle between the bearing of trend of first groove 1231 and the bearing of trend of second groove 1235 is obtuse angle.As shown in Figure 4, the angle that first groove 1231 and second groove 1235 are configured between V-type inner layer groove 123, first groove 1231 and second groove 1235 is jointly α and meets α > 90 °.Thus, the area in the region of first of inner layer groove 123 groove 1231 and second groove 1235 envelope (region with hatching as in Fig. 4) can be made larger, thus provide larger placement space for the setting of outer groove 122, and then effectively can increase the permanent-magnet torque of permagnetic synchronous motor 100.
As shown in Figure 3, first groove 1231 the first internal layer comprised for holding permanent magnet 130 holds space 1232, is positioned at the first internal layer and holds the first internal layer side groove 1233 of the one end in space 1232 and be positioned at the first internal layer side half groove 1234 that the first internal layer holds the other end in space 1232.That is, as shown in Figure 2, Figure 4 shows, the first internal layer side groove 1233 and the first internal layer side half groove 1234 are located at the first internal layer respectively and hold two ends on the Width in space 1232.Here " the first internal layer holds the Width in space 1232 " can refer to, in the b-b direction as shown in Fig. 2 or Fig. 4.The opening of the first internal layer side groove 1233 holds inner and at least one sidewall of the first internal layer side groove 1233 in space 1232 towards the first internal layer and is against on the periphery wall of permanent magnet 130.Thus, permanent magnet 130 can be limited to the first internal layer and hold in space 1232, prevent rotor 120 when rotated permanent magnet 130 hold in space 1232 at the first internal layer and rock.
Second groove 1235 the second internal layer comprised for holding permanent magnet 130 hold space 1236, be positioned at the second internal layer holds the second internal layer side groove 1237 of the one end in space 1236 and is positioned at the second internal layer side half groove 1238 that the second internal layer holds the other end in space 1236.That is, as shown in Figure 2, Figure 4 shows, the second internal layer side groove 1237 and the second internal layer side half groove 1238 are located at the second internal layer respectively and hold two ends on the Width in space 1236.Here " the second internal layer holds the Width in space 1236 " can refer to, in the c-c direction as shown in Fig. 2 or Fig. 4.The opening of the second internal layer side groove 1237 holds inside, space 1236 towards the second internal layer, and at least one sidewall of the second internal layer side groove 1237 is against on the periphery wall of permanent magnet 130, and the second internal layer side half groove 1238 is communicated with the first internal layer side half groove 1234.Thus, permanent magnet 130 can be limited to the second internal layer and hold in space 1236, prevent rotor 120 when rotated permanent magnet 130 hold in space 1236 at the second internal layer and rock.
For reducing the effect of the leakage flux at permanent magnet 130 two ends, in the first internal layer side groove 1233, second internal layer side groove 1237 and two outer side grooves 1222, be all filled with non-magnetic layer 124.It should be noted that, particular determination is not done for the material forming non-magnetic layer 124, such as, first internal layer side groove 1233, air can be filled with in second internal layer side groove 1237 and two outer side grooves 1222, thus, effectively can reduce the two ends of permanent magnet 130 on the Width (b-b direction as shown in Figure 2 and Figure 4) of first groove 1231, two ends on the Width (c-c direction as shown in Figure 2 and Figure 4) of second groove 1235, and the leakage flux at two ends on the Width (a-a direction as shown in figs. 2 and 4) of outer groove 122, and then improve the magnetic flux produced by permanent magnet 130, thus the electromagnetic torque increasing permagnetic synchronous motor 100 exports.
As shown in figs 2-4, for increasing the reluctance torque of permagnetic synchronous motor 100 further, the center of magnet groove 121 about magnet groove 121 and the line symmetry at rotor 120 center.That is, outer groove 122 and inner layer groove 123 are about the radius symmetry of in rotor 120.As shown in figs 2-4, straight line OL extends along a radius of rotor 120, namely the center of magnet groove 121 and the center of rotor 120 are all positioned on straight line OL, and this magnet groove 121 is symmetrical about straight line OL, and the outer groove 122 of this magnet groove 121 and inner layer groove 123 are all symmetrical about straight line OL.
Another aspect provides a kind of compressor (scheming not shown) according to of the present utility model, comprise permagnetic synchronous motor 100 as above.Wherein, the rotor 120 of permagnetic synchronous motor 100 can be connected with the bent axle of compressor (scheming not shown).
According to the compressor of the utility model embodiment, the outer groove 122 extended by the circumference arranged on rotor 120 along rotor 120 and the radially inner side being positioned at outer groove 122 and V-shaped inner layer groove 123, effectively can increase the q axle inductance of motor, and then increase the difference of quadrature axis inductance and d-axis inductance, thus the reluctance torque of permagnetic synchronous motor 100 can be increased.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.

Claims (10)

1. a permagnetic synchronous motor, is characterized in that, comprising:
Stator; And
Be located at the rotor of described stator interior, described rotor has the many groups magnet groove circumferentially distributed, often organize described magnet groove and comprise outer groove and inner layer groove, on the cross section of described rotor, described outer groove extends along the circumference of described rotor, and described inner layer groove is positioned at the radially inner side of described outer groove and described inner layer groove is V-shaped.
2. permagnetic synchronous motor according to claim 1, is characterized in that, described outer groove comprises:
Skin for holding permanent magnet holds space; And
Two outer side grooves, described two outer side grooves are located at described skin and hold on two relative sidewalls in space, the opening of each described outer side groove holds interior volume towards described skin, and at least one sidewall of each described outer side groove is against on the periphery wall of described permanent magnet.
3. permagnetic synchronous motor according to claim 2, is characterized in that, described outer side groove is located on the sidewall on the Width of described outer groove.
4. permagnetic synchronous motor according to claim 3, is characterized in that, the sidewall inside the close described rotor radial of described outer side groove is against on the periphery wall of described permanent magnet.
5. the permagnetic synchronous motor for compressor according to claim 2, is characterized in that, is filled with non-magnetic layer in described two outer side grooves.
6. permagnetic synchronous motor according to claim 1, is characterized in that, the center of described magnet groove about described magnet groove and the line symmetry of described rotor center.
7. according to the permagnetic synchronous motor described in claim 1-6, it is characterized in that, second groove that described inner layer groove comprises first groove and is communicated with described first groove, on the cross section of described rotor, described first groove and described second groove all linearly extend, and the angle of described first groove and described second groove is obtuse angle.
8. permagnetic synchronous motor according to claim 7, it is characterized in that, described first groove the first internal layer comprised for holding permanent magnet holds space, be positioned at described first internal layer holds the first internal layer side groove of the one end in space and is positioned at the first internal layer side half groove that described first internal layer holds the other end in space, and the opening of described first internal layer side groove holds interior volume and at least one sidewall of described first internal layer side groove is against on the periphery wall of described permanent magnet towards described first internal layer;
Described second groove the second internal layer comprised for holding permanent magnet holds space, be positioned at described second internal layer holds the second internal layer side groove of the one end in space and is positioned at the second internal layer side half groove that described second internal layer holds the other end in space, the opening of described second internal layer side groove holds interior volume towards described second internal layer, at least one sidewall of described second internal layer side groove is against on the periphery wall of described permanent magnet, and described second internal layer side half groove is communicated with described first internal layer side half groove.
9. permagnetic synchronous motor according to claim 8, is characterized in that, is filled with non-magnetic layer in described first internal layer side groove and described second internal layer side groove.
10. a compressor, is characterized in that, comprises the permagnetic synchronous motor according to any one of claim 1-9.
CN201520080442.1U 2015-02-04 2015-02-04 Permagnetic synchronous motor and there is its compressor Expired - Fee Related CN204376667U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104600939A (en) * 2015-02-04 2015-05-06 广东美芝制冷设备有限公司 Permanent-magnet synchronous motor and compressor with same
CN105186818A (en) * 2015-09-14 2015-12-23 常州市普世汽车电动系统有限公司 Permanent magnet synchronous motor with hybrid magnetic circuit arrangement
CN112600325A (en) * 2020-12-10 2021-04-02 苏州汇川技术有限公司 Motor direct-pole rotor and permanent magnet synchronous motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104600939A (en) * 2015-02-04 2015-05-06 广东美芝制冷设备有限公司 Permanent-magnet synchronous motor and compressor with same
CN105186818A (en) * 2015-09-14 2015-12-23 常州市普世汽车电动系统有限公司 Permanent magnet synchronous motor with hybrid magnetic circuit arrangement
CN112600325A (en) * 2020-12-10 2021-04-02 苏州汇川技术有限公司 Motor direct-pole rotor and permanent magnet synchronous motor
CN112600325B (en) * 2020-12-10 2022-06-28 苏州汇川技术有限公司 Motor direct-pole rotor and permanent magnet synchronous motor

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Granted publication date: 20150603

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