CN114079333A - Motor, compressor and electrical equipment - Google Patents
Motor, compressor and electrical equipment Download PDFInfo
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- CN114079333A CN114079333A CN202111494417.4A CN202111494417A CN114079333A CN 114079333 A CN114079333 A CN 114079333A CN 202111494417 A CN202111494417 A CN 202111494417A CN 114079333 A CN114079333 A CN 114079333A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/0094—Structural association with other electrical or electronic devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Iron Core Of Rotating Electric Machines (AREA)
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Abstract
The invention provides a motor, a compressor and electrical equipment, wherein the motor comprises: the stator assembly comprises a stator and a winding wound on the stator; the stator includes: the stator punching sheets comprise a plurality of pieced punching sheets which can be spliced and connected; any piece is towards piece includes: the yoke is arranged on the tooth part, and a groove body is arranged on one side of the yoke, which is far away from the tooth part; the rotor is arranged in the stator, the number of pole pairs of the rotor is P, and the maximum operation rotating speed of the rotor is N; and the frequency conversion assembly is electrically connected with the stator assembly and/or the rotor, the carrier frequency of the frequency conversion assembly is fc, the carrier frequency is equal to or greater than 9 and equal to or less than 15.6/(P multiplied by N), and the unit of fc is Hz. For a motor with a low pole pair number, the frequency converter outputs a current waveform close to sine, the carrier frequency does not need to be set too high, the requirement of the frequency converter can be met by the low carrier frequency, the loss of the frequency converter can be obviously reduced by the low carrier frequency, and the energy efficiency of the compressor is improved.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a motor, a compressor and electrical equipment.
Background
With the development of the rotary direct-current variable-frequency compressor, higher requirements are put on the energy efficiency of the compressor, and at present, the energy efficiency of the compressor is mainly improved by improving the efficiency of a motor and reducing friction loss.
However, the technical difficulties of improving the efficiency of the motor and reducing the friction loss are great, and therefore, how to improve the energy efficiency of the compressor becomes an urgent problem to be solved.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
In a first aspect, the present invention provides an electric machine comprising: the stator assembly comprises a stator and a winding wound on the stator; the stator includes: the stator punching sheets comprise a plurality of pieced punching sheets which can be spliced and connected; any one piece punching in a plurality of piece punching includes: a tooth portion; the yoke part is arranged on one side, away from the axis of the stator punching sheet, of the tooth part, and a groove body is arranged on one side, away from the tooth part, of the yoke part; the rotor is arranged in the stator, the number of pole pairs of the rotor is P, the maximum operation rotating speed of the rotor is N, and the unit is Hz; and the frequency conversion assembly is electrically connected with the stator assembly and/or the rotor, the carrier frequency of the frequency conversion assembly is fc, P, N and fc meet the requirement, fc/(P multiplied by N) is more than or equal to 9 and less than or equal to 15.6, and the unit of fc is Hz.
The motor provided by the invention is characterized in that the stator is internally provided with a stator slot, the rotor is arranged in the stator slot, specifically, the stator and the rotor are arranged through a shaft, and the rotor can rotate relative to the stator. Further, the stator is also provided with windings, and particularly, the windings are arranged on the stator teeth. The stator is equipped with a plurality of tooth portions including the stator towards the piece of range upon range of setting, the stator towards the piece, and a plurality of stator teeth have been constituted to the range upon range of setting of the tooth portion of a plurality of stator towards the piece. The stator teeth are arranged on the inner side of the stator and arranged towards the rotor. The coils are wound on the stator teeth to form windings, the windings are used for generating magnetic induction lines in a power-on state, and when the rotor rotates relative to the stator, namely, the rotor rotates relative to the windings, the rotor rotating relative to the windings cuts the magnetic induction lines to generate force for driving the rotor to rotate, so that the motor can run.
In order to reduce the processing difficulty of the stator and improve the groove fullness rate of the motor, the stator is arranged to be of a split type structure. The stator comprises a plurality of segmented laminations. Through setting up the piece towards the piece into a plurality ofly to when processing the stator, only process a plurality of pieces towards the piece can, assemble a plurality of pieces towards piece part into the stator again, compare in processing a complete stator, the degree of difficulty of processing piece towards piece part reduces, thereby reduced manufacturing cost, this kind of stator simple structure, accessible automation line realizes the automated production to the stator.
And, design the split type mosaic structure with the stator, be convenient for realize winding of coil and establish, can establish the back at the coil winding and install two adjacent piecemeal punching sheets again, reduce the degree of difficulty of establishing the coil, consequently can the stator size the same under the circumstances, wind and establish more coils, improve the winding of coil and establish the number of turns, be favorable to improving the groove fullness rate of motor. On the basis of not improving the size of the motor, the number of turns of the winding coil is increased, so that the output torque and the motor efficiency of the motor can be improved.
The larger the carrier frequency of the frequency conversion component is, the closer the waveform of current output is to a sine waveform, the higher the energy efficiency of the compressor is, and the output torque of the motor is increased at the moment. The larger the number of pole pairs of the rotor is, the larger the output torque of the motor is, and although the output torque of the motor can be increased by increasing the carrier frequency of the frequency conversion assembly and the pole pairs of the rotor, as the carrier frequency of the frequency conversion assembly increases, the loss of a switching device in the motor increases, the heat generated by the whole motor is large, and the efficiency of the motor is reduced, so that the efficiency of the motor is reduced by excessively increasing the carrier frequency of the frequency conversion assembly. And, as the number of pole pairs of the rotor increases, the size of the motor increases, which is contrary to the demand for miniaturization of the motor, and the more the number of pole pairs of the rotor, the lower the rotation speed of the rotor, resulting in a reduction in the operating efficiency of the compressor on which the motor is mounted.
Therefore, when the output torque of the motor is increased, the carrier frequency, the number of pole pairs of the rotor, and the maximum operating rotational speed of the rotor need to be correlated, the size of the motor needs to be reduced as much as possible in the case where the output torque can be increased, and the operating efficiency of the compressor needs to be ensured. For a motor with a low pole pair number, the frequency converter outputs a current waveform close to sine, the carrier frequency does not need to be set too high, the requirement of the frequency converter can be met by the low carrier frequency, the loss of the frequency converter can be obviously reduced by the low carrier frequency, and the energy efficiency of the compressor is improved.
According to the invention, the three parameters are correlated, and the ratio range of the carrier frequency, the number of pole pairs of the rotor and the maximum rotating speed of the rotor is limited to be between 9 and 15.6, so that the output torque of the motor can be increased on the basis of ensuring the efficiency of the motor and the energy efficiency of a compressor and reducing the size of the motor, and the working requirements of the motor under different use scenes can be favorably met.
In addition, according to the stator in the above technical solution provided by the present invention, the following additional technical features may be further provided:
in one possible design, the carrier frequency is fc, 3000 ≦ fc ≦ 5000.
In the design, when the carrier frequency is greater than 5000Hz, the numerical value of the carrier frequency is large, the loss of the switching device is increased, the heat productivity of the motor is large, and the efficiency of the motor is reduced. When the carrier frequency is less than 5000Hz, the carrier frequency is small, the running stability of the motor is poor, and running noise is large due to motor oscillation. The numerical value of the carrier frequency is limited between 3000 and 5000, so that the noise generated when the motor runs can be reduced on the basis of ensuring the efficiency of the motor, and the use experience of a user on the motor is favorably improved.
In one possible design, p and N satisfy, 60 < N/p ≦ 100.
In this design, the number of pole pairs of the rotor is correlated with the torque of the motor, but simply limiting the range of the number of pole pairs to adjust the torque tends to make it difficult for the compressor mounting the motor to reach the standard required for operation. The larger the rotating speed of the rotor is, the larger the displacement of the compressor is, and the larger the number of pole pairs is, the lower the maximum rotating speed of the rotor is, so that the maximum rotating speed of the rotor is associated with the number of pole pairs of the rotor, the ratio of the maximum rotating speed of the rotor to the number of pole pairs of the rotor is limited between 60 and 100, the torque can be reduced under the condition of the same displacement, the operating point of the motor is changed, and the efficiency of the motor is improved.
In one possible design, any one of the plurality of segment stampings further comprises: the first connecting part is arranged on one edge of the segmented punching sheet extending along the radial direction of the segmented punching sheet; the second connecting portion set up in another edge that the piece is towards piece radial extension along the piece, and the first connecting portion of a piece can cooperate with the second connecting portion of adjacent piece towards the piece.
In this design, a first connection portion and a second connection portion are provided on the segment punch. Specifically, first connecting portion set up in along the radial edge that extends of stator punching, and the second connecting portion set up in along the radial another edge that extends of stator punching, also promptly, first connecting portion and second connecting portion locate the both sides of piecemeal punching respectively along the circumference of stator punching. The first connecting portion of one piece of lamination is cooperated with the second connecting portion of another adjacent piece of lamination, so that the connection of the two pieces of lamination is realized. The plurality of the partitioned punching sheets are arranged along the circumferential direction of the stator, so that any two adjacent partitioned punching sheets are matched through the first connecting part and the second connecting part, connection among the plurality of the partitioned punching sheets is realized, and the stator is formed in a surrounding mode.
Set up first connecting portion and second connecting portion and can improve the connection stability of adjacent piecemeal towards the piece on the piecemeal towards the piece, avoid two adjacent piecemeal towards the piece and take place to rock.
In one possible embodiment, the first connecting part is designed as a projection and the second connecting part is designed as a recess adapted to the projection.
In this design, first connecting portion are constructed as protruding piece, and the second connecting portion are constructed as the recess, that is to say, be unsmooth complex structure between first connecting portion and the second connecting portion, recess and protruding looks adaptation realize the connection cooperation of first connecting portion and second connecting portion.
Through setting up first connecting portion as protrusion, set up second connecting portion as with protrusion matched with recess, made between first connecting portion and the second connecting portion form unsmooth complex structure, promoted the connection reliability, reduced the processing degree of difficulty.
In one possible design, the number of the partitioning stampings is M, where M and N satisfy: 2/3, M is less than or equal to 6, N is less than or equal to 2.
In the design, the number of the segmented laminations in the stator laminations, the number of the pole pairs of the rotor and the proportional relationship between the segmented laminations and the pole pairs of the rotor all affect the performance of the motor, and in order to ensure that the performance parameters of the motor are in a better range, the number of the segmented laminations in the stator laminations, the number of the pole pairs of the rotor and the proportional relationship between the segmented laminations and the rotor are limited.
Specifically, the number of the blocking punching sheets in one stator punching sheet is M, the number of pole pairs of the rotor is N, wherein M and N satisfy: 2/3, M is less than or equal to 6, N is less than or equal to 2.
The number of the segmented punching sheets in one stator punching sheet is limited to be less than or equal to 6, the number of the pole pairs of the rotor is less than or equal to 2, and the ratio of the number of the segmented punching sheets in one stator punching sheet to the number of the pole pairs of the rotor is 2/3, so that the performance of the motor can be guaranteed to be in a better range, and the motor can meet the use requirement.
In one possible design, the segmented sheet includes: the avoiding gap is arranged on the surface, facing the rotor, of the tooth part, and the distance between the avoiding gap and a first tooth shoe of the tooth part is smaller than the distance between the avoiding gap and a second tooth shoe of the tooth part; wherein, along the direction of rotation of rotor, the rotor passes through first tooth boots and second tooth boots in proper order.
In this design, the stator further comprises an avoidance gap, which is provided at the surface of the tooth portion for facing the rotor. The tooth portion includes first tooth boots and second tooth boots, and along the direction of rotation of rotor, the rotor passes through first tooth boots and second tooth boots in proper order. The distance between the avoiding notch and the first tooth boot is smaller than the distance between the avoiding notch and the second tooth boot, namely the avoiding notch is close to one side of the first tooth boot.
The avoiding notch is formed in the surface, facing the rotor, of the tooth part, so that the convex part on the rotor can be avoided through avoiding the notch in the process of assembling the stator and the rotor, and assembly interference is avoided.
The avoidance notch is arranged on the stator, so that the space phase of the air gap magnetic conductance of the stator and the rotor can be effectively adjusted, the phase of the first-order magnetic conductance tooth harmonic wave of the magnetic field is changed and is mutually offset with the armature magnetic potential harmonic wave, the radial electromagnetic force of the motor is obviously reduced, and the noise generated when the motor operates is favorably reduced.
In one possible design, the stator further comprises: and the aluminum coil is wound on the tooth part.
In this design, the material of the coil wound around the tooth portion is limited, the coil is made of an aluminum material, that is, the coil is formed by winding an aluminum wire around the tooth portion, the unit price of the aluminum wire is low, and the aluminum wire is used as the coil, so that the material cost of the motor can be reduced for the most part.
In one possible design, the number of teeth of the stator is Z, Z and N are satisfied, 20 < N/Z ≦ 34.
In this design, the maximum motor rotation speed affects the torque of the motor, but simply limiting the maximum motor rotation speed is not limited by the number of teeth of the stator, which easily causes a change in the harmonic magnetic field of the motor and affects the efficiency of the motor. Therefore, the number of teeth of the stator and the maximum rotating speed of the rotor are combined, so that the torque can be reduced under the condition of the same displacement, the operating point of the motor is changed, and the efficiency of the motor is improved.
In one possible design, the electric machine further comprises: and the magnetic flux guide grooves penetrate through the rotor along the axial direction of the motor.
In this design, the rotor is also provided with a plurality of flux guide slots. Specifically, the rotor is formed by stacking a plurality of rotor punching sheets, a plurality of magnetic flux guide grooves are formed in any one of the rotor punching sheets, and the magnetic flux guide grooves are communicated and distributed in the rotor punching sheets along the axial direction of the motor, namely, the magnetic flux guide grooves are communicated and distributed in the rotor punching sheets along the axial direction of the motor. It is understood that during operation of the machine, radial electromagnetic waves are generated, which cause increased noise. In order to improve the noise problem of the motor, a plurality of magnetic flux guide grooves are arranged on the rotor in a penetrating mode along the axial direction of the motor, so that the lowest-order radial electromagnetic force wave of the motor can be reduced, and the noise caused by the radial electromagnetic force wave is further reduced.
The rotor is provided with the plurality of magnetic flux guide grooves, and the magnetic flux guide grooves are distributed on the rotor in a penetrating manner along the axial direction of the motor, so that the lowest-order radial electromagnetic force wave of the motor can be reduced, and the noise caused by the radial electromagnetic force wave is further reduced.
In one possible design, the outer diameter of the stator is Φ 1, the inner diameter of the stator is Φ 2, and the relationship between Φ 1 and Φ 2 satisfies: 0.57 is more than or equal to phi 2/phi 1 is more than or equal to 0.5.
In this design, the relationship between the outer diameter and the inner diameter of the stator lamination is further defined. It can understand, the ratio between the internal diameter of stator punching and the external diameter of stator punching can produce certain influence to the performance of motor, specifically, can all produce the influence to heat dissipation, magnetic flux density and the whole weight of motor, for each parameter of balanced motor, makes the motor have higher price/performance ratio, prescribes a limit to certain within range with the ratio between the internal diameter of stator punching and the external diameter of stator punching.
Specifically, the outer diameter of the stator punching sheet is phi 1, the inner diameter of the stator punching sheet is phi 2, and the relationship between phi 1 and phi 2 satisfies: 0.57 is more than or equal to phi 2/phi 1 is more than or equal to 0.5.
The outer diameter of the stator punching sheet can be 101.15mm, and the inner diameter of the stator punching sheet can be 53.3 mm.
The ratio range between the inner diameter of the stator punching sheet and the outer diameter of the stator punching sheet is limited, so that the ratio between the inner diameter of the stator punching sheet and the outer diameter of the stator punching sheet is more than or equal to 0.5 and less than or equal to 0.57, each parameter of the motor can reach an ideal range, and the motor has higher cost performance.
In one possible design, the rated torque of the motor is T1, the inner diameter of the stator is Φ 2, and the torque per unit volume of the rotor is T2, where T1, Φ 2, and T2 satisfy:
5.18×10-7≤T1×Φ2-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
in this design, the range of the combined variables among the rated torque of the motor, the inner diameter of the stator lamination, and the unit volume torque of the rotor is limited. The output torque of the motor can meet the requirements of equipment arranged on the motor by limiting the range of the combined variable.
Specifically, the rated torque of the motor is T1, the inner diameter of the stator punching sheet is Φ 2, and the unit volume torque of the rotor is T2, wherein T1, Φ 2 and T2 satisfy:
5.18×10-7≤T1×Φ2-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
the combined variable of the rated torque of the motor, the inner diameter of the stator punching sheet and the unit volume torque of the rotor is limited to be more than or equal to 5.18 multiplied by 10-7And is not more than 1.17X 10-6And a torque per unit volume of the rotor is limited to 5kN m or more-3And not more than 45kN · m-3The output torque of the motor can meet the requirements of equipment arranged on the motor.
In a second aspect, the present invention provides a compressor comprising: an electric machine as in any one of the possible designs of the first aspect; and a compression part, to which the motor is connected.
In a third aspect, the present invention provides an electrical device, comprising: an apparatus main body; and the compressor in the second aspect, the compressor being connected to the apparatus main body.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic structural diagram of a partitioning sheet according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a stator lamination of an embodiment of the invention;
fig. 3 shows a schematic structural diagram of a rotor sheet according to an embodiment of the invention;
fig. 4 shows a schematic configuration of a compressor according to another embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
100 stators, 110 segmented punching sheets, 111 teeth, 1111 first tooth shoes, 1112 second tooth shoes, 112 yokes, 113 first connecting parts, 114 second connecting parts, 120 stator punching sheets, 121 groove bodies, 122 avoiding notches, 200 rotors, 210 rotor punching sheets, 211 first magnetic steel grooves, 212 second magnetic steel grooves, 300 compressors, 310 compression parts, 311 cylinders, 312 pistons, 320 crankshafts, 330 main bearings and 340 auxiliary bearings.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Motors, compressors, and electrical devices provided according to some embodiments of the present invention are described below with reference to fig. 1 to 4.
As shown in fig. 4, in some embodiments of the present invention, there is provided a motor including: the stator assembly comprises a stator 100 and a winding wound on the stator 100; the stator includes: the stator punching sheets 120 are stacked, and each stator punching sheet 120 comprises a plurality of segmented punching sheets 110 which can be spliced and connected; any one of the plurality of the segment punching sheets 110 includes: tooth portion 111 and yoke portion 112, yoke portion 112 locate and deviate from the one side of stator punching 120 axle center in tooth portion 111, and the one side that deviates from tooth portion 111 in yoke portion 112 is provided with cell body 121. The rotor 200 is arranged in the stator 100, the number of pole pairs of the rotor 200 is P, and the maximum operation rotating speed of the rotor 200 is N and the unit is Hz; the frequency conversion assembly is electrically connected with the stator assembly and/or the rotor 200, the carrier frequency of the frequency conversion assembly is fc, P, N and fc meet, fc/PxN is more than or equal to 9 and less than or equal to 15.6, and the unit of fc is Hz.
In the motor provided in the present embodiment, the stator 100 is provided with stator slots, and the rotor 200 is disposed in the stator slots, specifically, the stator 100 is disposed coaxially with the rotor 200, and the rotor 200 can rotate relative to the stator 100. Further, the stator 100 is also provided with windings, specifically, the windings are arranged on the teeth of the stator 100. Stator 100 is including the stator punching sheet 120 of range upon range of setting, is equipped with a plurality of tooth portions 111 on the stator punching sheet 120, and the setting of range upon range of tooth portion 111 of a plurality of stator punching sheets 120 has constituted a plurality of stator 100 teeth. The stator 100 teeth are provided inside the stator 100 and are disposed toward the rotor 200. The coils are wound on the teeth of the stator 100 to form windings, the windings are used for generating magnetic induction lines in a power-on state, and in the process that the rotor 200 rotates relative to the stator 100, namely, the rotor 200 rotates relative to the windings, cuts the magnetic induction lines, and generates force for driving the rotor 200 to rotate, so that the motor can run.
In order to reduce the processing difficulty of the iron core of the stator 100 and improve the slot fullness rate of the motor, the stator 100 is designed to be a split structure. The stator 100 includes a plurality of segment laminations 110. Through setting up the piece towards piece 110 into a plurality ofly to when processing stator 100, only process a plurality of piece towards piece 110 can, assemble into stator 100 with a plurality of piece towards piece 110 parts again, compare in processing a complete stator 100, the degree of difficulty of processing piece towards piece 110 parts reduces, thereby manufacturing cost has been reduced, this kind of stator 100 simple structure, accessible automation line realizes the automated production to stator 100.
And, design stator 100 for split type mosaic structure, be convenient for realize the winding of coil and establish, can establish the back at the coil winding and install two adjacent piecemeal punching sheets 110 again, reduce the degree of difficulty of establishing the coil, consequently can be under the same circumstances of stator 100 size, establish more coils around, improve the winding of coil and establish the number of turns, be favorable to improving the groove fullness rate of motor. On the basis of not improving the size of the motor, the number of turns of the winding coil is increased, so that the output torque and the motor efficiency of the motor can be improved.
The larger the carrier frequency of the frequency conversion component is, the closer the waveform of current output is to a sine waveform, the higher the energy efficiency of the compressor is, and the output torque of the motor is increased at the moment. The larger the number of pole pairs of the rotor 200, the larger the output torque of the motor. Although the output torque of the motor can be increased by increasing the carrier frequency of the inverter module and the number of pole pairs of the rotor 200, as the carrier frequency of the inverter module increases, the loss of switching devices in the motor increases, the heat generation of the whole motor is large, and the efficiency of the motor decreases, so that the efficiency of the motor decreases due to the excessive increase of the carrier frequency of the inverter module. And, as the number of pole pairs of the rotor 200 increases, the size of the motor increases, which is contrary to the miniaturization requirement of the motor, and the number of pole pairs of the rotor 200 increases, the rotation speed of the rotor 200 decreases, resulting in a decrease in the working efficiency of the compressor in which the motor is mounted, and thus, the working efficiency.
Therefore, when the output torque of the motor is increased, it is necessary to associate the carrier frequency, the number of pole pairs of the rotor 200, and the maximum operating rotational speed of the rotor 200, and to reduce the size of the motor as much as possible in the case where the output torque can be increased, and to ensure the operating efficiency of the compressor, it is necessary to balance the number of pole pairs of the rotor 200 and the maximum rotational speed of the rotor 200, and on this basis, it is necessary to consider that the heat generation amount of the motor is prevented from being excessively large in the case where the output torque is increased as much as possible.
For a motor with a low pole pair number, the frequency converter outputs a current waveform close to sine, the carrier frequency does not need to be set too high, the requirement of the frequency converter can be met by the low carrier frequency, the loss of the frequency converter can be obviously reduced by the low carrier frequency, and the energy efficiency of the compressor is improved.
According to the invention, through the correlation of the three parameters and the limitation of the range of the ratio of the carrier frequency to the number of pole pairs of the rotor 200 to the maximum rotating speed of the rotor 200 between 9 and 15.6, the output torque of the motor can be increased on the basis of ensuring the efficiency of the motor and the energy efficiency of the compressor and reducing the size of the motor, and the working requirements of the motor under different use scenes can be favorably met.
In one possible embodiment, the carrier frequency is fc, 3000 ≦ fc ≦ 5000.
In this embodiment, when the carrier frequency is greater than 5000Hz, the value of the carrier frequency is greater, the loss of the switching device increases, the heat generation of the motor is greater, and the efficiency of the motor decreases. When the carrier frequency is less than 5000Hz, the carrier frequency is small, the running stability of the motor is poor, and running noise is large due to motor oscillation. The numerical value of the carrier frequency is limited between 3000 and 5000, so that the noise generated when the motor runs can be reduced on the basis of ensuring the efficiency of the motor, and the use experience of a user on the motor is favorably improved.
In one possible embodiment, p and N satisfy, 60 < N/p ≦ 100.
In this embodiment, the number of pole pairs of the rotor 200 is associated with the torque of the motor, but simply limiting the number range of the number of pole pairs to adjust the torque easily causes the displacement of the compressor 300 in which the motor is installed to hardly meet the required standard for operation. The higher the rotation speed of the rotor 200 is, the larger the displacement of the compressor 300 is, and the larger the number of pole pairs is, the lower the maximum rotation speed of the rotor 200 is, therefore, the maximum rotation speed of the rotor 200 is related to the number of pole pairs of the rotor 200, the ratio of the maximum rotation speed of the rotor 200 to the number of pole pairs of the rotor 200 is limited between 60 and 100, the torque can be reduced under the condition of the same displacement, the operating point of the motor operation is changed, and the efficiency of the motor is improved.
In a possible embodiment, any partitioning sheet 110 of the plurality of partitioning sheets 110 further includes: the first connecting portion 113 is arranged at one edge of the block punching sheet 110, which extends along the radial direction of the block punching sheet 110; the second connecting portion 114 is disposed at another edge of the segmented sheet 110 extending along the radial direction of the segmented sheet 110, and the first connecting portion 113 of one segmented sheet 110 can be matched with the second connecting portion 114 of the adjacent segmented sheet 110.
In this embodiment, the first connection portion 113 and the second connection portion 114 are provided on the segment sheet 110. Specifically, the first connecting portion 113 is disposed at one edge extending along the radial direction of the stator lamination 120, and the second connecting portion 114 is disposed at the other edge extending along the radial direction of the stator lamination 120, that is, the first connecting portion 113 and the second connecting portion 114 are disposed at two sides of the segmented lamination 110 along the circumferential direction of the stator lamination 120. The first connecting portion 113 of one piece of block punching sheet 110 is matched with the second connecting portion 114 of another adjacent piece of block punching sheet 110, so that the connection of the two piece of block punching sheets 110 is realized. The plurality of segmented punching sheets 110 are arranged along the circumferential direction of the stator 100, so that any two adjacent segmented punching sheets 110 are matched through the first connecting part 113 and the second connecting part 114, connection among the plurality of segmented punching sheets 110 is realized, and the stator 100 is formed in a surrounding manner.
The first connecting portion 113 and the second connecting portion 114 are arranged on the blocking punching sheet 110, so that the connection stability of the adjacent blocking punching sheets 110 can be improved, and the adjacent two blocking punching sheets 110 are prevented from shaking.
In one possible embodiment, as shown in fig. 1 and 2, the first connecting portion 113 is configured as a protrusion, and the second connecting portion 114 is configured as a groove adapted to the protrusion.
In this embodiment, the first connecting portion 113 is configured as a protrusion, and the second connecting portion 114 is configured as a groove, that is, a concave-convex fit structure is formed between the first connecting portion 113 and the second connecting portion 114, and the groove is matched with the protrusion to realize the connection fit of the first connecting portion 113 and the second connecting portion 114.
Through setting up first connecting portion 113 as protruding piece, set up second connecting portion 114 as with protruding piece matched with recess, made between first connecting portion 113 and the second connecting portion 114 form unsmooth complex structure, promoted the connection reliability, reduced the processing degree of difficulty.
In one possible embodiment, the number of the partitioning stampers 110 is M, where M and N satisfy: 2/3, M is less than or equal to 6, N is less than or equal to 2.
In this embodiment, the number of the segmented laminations 110 in the stator lamination 120, the number of the pole pairs of the rotor 200, and the proportional relationship therebetween all affect the performance of the motor, and in order to ensure that the performance parameters of the motor are within a good range, the number of the segmented laminations 110 in the stator lamination 120, the number of the pole pairs of the rotor 200, and the proportional relationship therebetween are defined.
Specifically, the number of the segmented laminations 110 in one stator lamination 120 is M, the number of pole pairs of the rotor 200 is N, where M and N satisfy: 2/3, M is less than or equal to 6, N is less than or equal to 2.
The number of the segmented laminations 110 in one stator lamination 120 is limited to be less than or equal to 6, the number of the pole pairs of the rotor 200 is less than or equal to 2, and the ratio of the number of the segmented laminations 110 in one stator lamination 120 to the number of the pole pairs of the rotor 200 is 2/3, so that the performance of the motor can be ensured to be in a better range, and the motor can meet the use requirement.
As shown in fig. 1, fig. 2, and fig. 4, in a possible embodiment, the partitioning sheet 110 further includes: a distance between the escape notch 122 and the first tooth shoe 1111 of the tooth portion 111 is smaller than a distance between the escape notch 122 and the second tooth shoe 1112 of the tooth portion 111; wherein, along the rotation direction of the rotor 200, the rotor 200 sequentially passes through the first tooth shoe 1111 and the second tooth shoe 1112.
In this embodiment, the stator 100 further includes an avoidance gap 122, and the avoidance gap 122 is provided on the surface of the tooth portion 111 for facing the rotor 200. Tooth 111 includes a first tooth shoe 1111 and a second tooth shoe 1112, and rotor 200 passes first tooth shoe 1111 and second tooth shoe 1112 in sequence in a rotation direction of rotor 200. The distance between the avoidance gap 122 and the first tooth shoe 1111 is smaller than the distance between the avoidance gap 122 and the second tooth shoe 1112, that is, the avoidance gap 122 is close to the first tooth shoe 1111 side.
By providing the relief notch 122 on the surface of the tooth 111 facing the rotor 200, the relief notch 122 can be used to relieve a protruding part on the rotor 200 during the process of assembling the stator 100 and the rotor 200, thereby avoiding assembly interference.
Specifically, the avoidance notch 122 is formed in the stator 100, so that the space phase of the air gap flux guide of the stator 100 and the rotor 200 can be effectively adjusted, the phase of the first-order magnetic guide tooth harmonic wave of the magnetic field is changed and is mutually offset with the armature magnetic potential harmonic wave, the radial electromagnetic force of the motor is obviously reduced, and the noise generated during the operation of the motor is favorably reduced.
In a possible embodiment, the stator 100 further comprises: an aluminum coil is wound around the tooth 111.
In this embodiment, the material of the coil wound around the tooth 111 is limited, the coil is made of aluminum, that is, the coil is formed by winding an aluminum wire around the tooth 111, the unit price of the aluminum wire is low, and the aluminum wire is used as the coil, so that the material cost of the motor can be reduced in most cases.
In one possible embodiment, the number of teeth of the stator 100 is Z, Z and N satisfy 20 < N/Z ≦ 34.
In this embodiment, the maximum rotation speed of the motor affects the torque of the motor, but simply limiting the maximum rotation speed of the motor out of the limitation of the number of teeth of the stator 100 easily causes a change in the harmonic magnetic field of the motor, which affects the efficiency of the motor. Therefore, the number of teeth of the stator 100 and the maximum rotating speed of the rotor 200 are combined, so that the torque can be reduced under the condition of the same displacement, the operating point of the motor can be changed, and the efficiency of the motor can be improved.
In a possible embodiment, as shown in fig. 3 and 4, the motor further includes: and a plurality of flux guide grooves provided in the rotor 200 to penetrate in the axial direction of the motor.
In this embodiment, the rotor 200 is also provided with a plurality of flux guide grooves. Specifically, the rotor 200 is formed by stacking a plurality of rotor sheets 210, and a plurality of flux guide slots are provided on any one of the rotor sheets 210, and the flux guide slots are distributed in the rotor sheets 210 in a penetrating manner along the axial direction of the motor, that is, distributed in the rotor sheets 210 in a penetrating manner along the axial direction of the motor. It is understood that during operation of the machine, radial electromagnetic waves are generated, which cause increased noise. In order to improve the noise problem of the motor, a plurality of magnetic flux guide grooves are arranged on the rotor 200 along the axial direction of the motor in a penetrating way, so that the lowest-order radial electromagnetic force wave of the motor can be reduced, and the noise caused by the radial electromagnetic force wave can be further reduced.
The plurality of magnetic flux guide grooves are formed in the rotor 200 and are distributed on the rotor 200 in a penetrating manner along the axial direction of the motor, so that the lowest-order radial electromagnetic force waves of the motor can be reduced, and the noise caused by the radial electromagnetic force waves is reduced.
The rotor punching sheet 210 is provided with a first magnetic steel groove 211 and a second magnetic steel groove 212, and magnetic steels can be respectively arranged in the first magnetic steel groove 211 and the second magnetic steel groove 212 to form a pair of magnetic poles.
In a possible embodiment, the rotor 200 is taken along a radial direction of the rotor 200, and an outer contour of a cross section of the rotor 200 is circular.
In this embodiment, the rotor 200 is taken along the radial direction of the rotor 200, the cross section of the rotor 200 in the radial direction may be a regular circle or may not be a regular circle, and a circle passing through the outermost contour of the rotor 200 is set as a contour circle passing through a point or a line where the radial cross section of the rotor 200 is farthest from the center of the circle, the contour circle passing through the axis of the rotor 200, and if the radial cross section of the rotor 200 is a regular circle, the contour circle coincides with the outer edge of the radial cross section of the rotor 200.
Further, the outer contour of the rotor 200 may be circular. It can be understood that, in the working process of the motor, the rotor 200 is in a rotating state, and the outer contour of the rotor 200 is set to be circular, so that the wind abrasion loss generated in the rotating process of the rotor 200 can be effectively reduced, and the working efficiency of the motor is improved.
As shown in fig. 2, in one possible embodiment, the outer diameter of the stator 100 is Φ 1, the inner diameter of the stator 100 is Φ 2, and the relationship between Φ 1 and Φ 2 satisfies: 0.57 is more than or equal to phi 2/phi 1 is more than or equal to 0.5.
In this embodiment, the relationship between the outer diameter and the inner diameter of the stator lamination 120 is further defined. It can be understood that, the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120 has a certain influence on the performance of the motor, specifically, the heat dissipation, the magnetic flux density and the overall weight of the motor are all influenced, in order to balance various parameters of the motor, the motor has a high cost performance, and the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120 is limited in a certain range.
Specifically, the outer diameter of the stator lamination 120 is Φ 1, the inner diameter of the stator lamination 120 is Φ 2, and the relationship between Φ 1 and Φ 2 satisfies: 0.57 is more than or equal to phi 2/phi 1 is more than or equal to 0.5.
The outer diameter of the stator lamination 120 may be 101.15mm, and the inner diameter of the stator lamination 120 may be 53.3 mm.
By limiting the range of the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120, the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120 is greater than or equal to 0.5 and less than or equal to 0.57, so that each parameter of the motor can reach an ideal range, and the motor has high cost performance.
In one possible embodiment, the rated torque of the motor is T1, the inner diameter of the stator 100 is Φ 2, and the torque per unit volume of the rotor 200 is T2, where T1, Φ 2, and T2 satisfy:
5.18×10-7≤T1×Φ2-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
in this embodiment, the range of the combined variables among the rated torque of the motor, the inner diameter of the stator lamination 120, and the torque per unit volume of the rotor 200 is defined. It can be understood that the output torque of the motor is affected by the combined variable among the rated torque of the motor, the inner diameter of the stator lamination 120 and the unit volume torque of the rotor 200, and the output torque of the motor can meet the requirement of the equipment arranged in the motor by limiting the range of the combined variable.
Specifically, the rated torque of the motor is T1, the inner diameter of the stator lamination 120 is Φ 2, and the unit volume torque of the rotor 200 is T2, where T1, Φ 2, and T2 satisfy:
5.18×10-7≤T1×Φ2-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
the combined variable of the rated torque of the motor, the inner diameter of the stator punching sheet 120 and the unit volume torque of the rotor 200 is limited to be more than or equal to 5.18 multiplied by 10-7And is not more than 1.17X 10-6And the torque per unit volume of the rotor 200 is limited to 5kN m or more-3And not more than 45kN · m-3The output torque of the motor can meet the requirements of equipment arranged on the motor.
As shown in fig. 1, in one possible embodiment, a slot 121 is disposed on a side of the yoke 112 away from the tooth 111, that is, the slot 121 is disposed on an outer circumference of the stator 100, and the slot 121 can increase a distance between the stator 100 and another component located on an outer circumference side of the stator 100, thereby facilitating oil return of the compressor 300, improving smoothness of the oil return, and facilitating improvement of operation stability of the compressor 300.
A large number of coils are usually wound in the stator slot, so that the space for oil supply liquid to circulate in the stator slot is small, and the circulation area of return oil can be increased by arranging the slot body on the stator.
The groove body 121 includes a trapezoidal groove. The trapezoidal groove body 121 is convenient to be clamped with a tool, so that the tool can drive the plurality of partitioned punching sheets 110 to move. In the winding process, the plurality of segmented punching sheets 110 are linearly distributed, and after the winding is completed, the fixture drives the plurality of segmented punching sheets 110 to surround to form the stator punching sheet 120. The groove body 121 is a trapezoidal groove, so that convenience of the fixture for driving the blocking punching sheet 110 to move can be improved.
In one possible application, the plurality of grooves 121 other than the trapezoidal groove 121 are rectangular. Through setting up at least one cell body 121 into the rectangular channel, the rectangular channel can regard as discernment groove, can realize the location to the motor through discernment groove to be convenient for assemble to the compressor to the motor.
In one possible embodiment, the yoke portion 112 is taken along a radial direction of the stator punching sheet 120, and the slot 121 passes through a center line of a cross section of the yoke portion 112.
In this embodiment, the groove 121 passes through the center line of the yoke 112, so that the oil return effect can be further improved, the oil return smoothness is improved, and the operation stability of the compressor 300 is improved.
As shown in fig. 4, in an embodiment of the present invention, there is provided a compressor 300, the compressor 300 including: the motor and the compressing part 310 in any of the above possible embodiments, the motor is connected to the compressing part 310.
Specifically, the compression part 310 includes a cylinder 311 and a piston 312, in order to enable a motor to be connected to the compression part 310 and drive the compression part 310 to operate, some connecting members are further provided in the compressor 300, specifically including a crankshaft 320, a main bearing 330 and a sub-bearing 340, the motor is connected to the piston 312 through the crankshaft 320 to drive the piston 312 to move in the cylinder 311, and the main bearing 330 and the sub-bearing 340 are provided outside the crankshaft 320 to support and limit the crankshaft 320 so that the crankshaft 320 can normally rotate.
The compressor 300 proposed in this embodiment includes the motor proposed in the above embodiments, so that the compressor 300 has all the advantages of the motor provided in any one of the above possible embodiments.
In an embodiment of the present invention, an electrical apparatus is provided, the electrical apparatus including: the equipment main body and the compressor in the above embodiments, the compressor is connected to the equipment main body.
The electrical equipment provided by the embodiment comprises an equipment main body and a compressor, wherein the compressor is connected with the equipment main body, and when the electrical equipment runs, the compressor and the equipment main body are matched to run together so that the electrical equipment runs normally.
The electrical equipment provided by the application comprises the compressor provided by the embodiment, so that the electrical equipment has all the beneficial effects of the compressor provided by the embodiment.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. An electric machine, comprising:
the stator assembly comprises a stator and a winding wound on the stator;
the stator includes:
the stator punching sheets are stacked and comprise a plurality of segmented punching sheets which can be spliced and connected;
any one of the plurality of partitioned stampings comprises:
a tooth portion;
the yoke part is arranged on one side, away from the axis of the stator punching sheet, of the tooth part, and a groove body is arranged on one side, away from the tooth part, of the yoke part;
the rotor is arranged in the stator, the number of pole pairs of the rotor is P, the maximum operation rotating speed of the rotor is N, and the unit is Hz;
and the frequency conversion assembly is electrically connected with the stator assembly and/or the rotor, the carrier frequency of the frequency conversion assembly is fc, P, N and fc meet, fc/(P multiplied by N) is more than or equal to 9 and less than or equal to 15.6, and the unit of fc is Hz.
2. The electric machine of claim 1,
the carrier frequency is fc, and the carrier frequency is more than or equal to 3000 and less than or equal to 5000.
3. The electric machine of claim 1,
p and N satisfy, N/p is more than 60 and less than or equal to 100.
4. The electric machine of claim 1,
any one of the plurality of the blocking punching sheets further comprises:
the first connecting part is arranged on one edge of the blocking stamped steel extending along the radial direction of the blocking stamped steel;
the second connecting portion is arranged on the edge of the blocking punching sheet, which extends along the radial direction of the blocking punching sheet, and the first connecting portion of one blocking punching sheet can be matched with the second connecting portion of the adjacent blocking punching sheet.
5. The electric machine of claim 4,
the first connecting portion is configured as a projection and the second connecting portion is configured as a recess adapted to the projection.
6. The electric machine of claim 1,
the number of the blocking punching sheets is M, wherein M and N meet the following requirements: 2/3, M is less than or equal to 6, N is less than or equal to 2.
7. The electric machine of claim 1, wherein the segmented laminations further comprise:
the avoiding notch is arranged on the surface, facing the rotor, of the tooth part, and the distance between the avoiding notch and a first tooth shoe of the tooth part is smaller than the distance between the avoiding notch and a second tooth shoe of the tooth part;
wherein, along the direction of rotation of the rotor, the rotor passes through the first tooth shoe and the second tooth shoe in order.
8. The electric machine of claim 7, wherein the stator further comprises:
and the aluminum coil is wound on the tooth part.
9. The electrical machine according to any one of claims 1 to 8,
the number of teeth of the stator is Z, Z and N meet, and N/Z is more than 20 and less than or equal to 34.
10. The electric machine of any one of claims 1 to 8, further comprising:
and a plurality of flux guide grooves which are arranged on the rotor in a penetrating manner along the axial direction of the motor.
11. The electrical machine according to any one of claims 1 to 8,
the outer diameter of the stator is phi 1, the inner diameter of the stator is phi 2, and the relation between phi 1 and phi 2 satisfies: 0.57 is more than or equal to phi 2/phi 1 is more than or equal to 0.5.
12. The electric machine of any of claims 1 to 8, wherein the electric machine has a rated torque of T1, an inner diameter of the stator is Φ 2, and a torque per unit volume of the rotor is T2, wherein T1, Φ 2, and T2 satisfy:
5.18×10-7≤T1×Φ2-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
13. a compressor, comprising:
the electric machine of any one of claims 1 to 12; and
and the motor is connected with the compression part.
14. An electrical device, comprising:
an apparatus main body; and
the compressor of claim 13, coupled to the equipment body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111494417.4A CN114079333B (en) | 2021-12-08 | 2021-12-08 | Motor, compressor and electrical equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111494417.4A CN114079333B (en) | 2021-12-08 | 2021-12-08 | Motor, compressor and electrical equipment |
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| CN114079333A true CN114079333A (en) | 2022-02-22 |
| CN114079333B CN114079333B (en) | 2023-07-28 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353521A (en) * | 2003-05-28 | 2004-12-16 | Matsushita Electric Ind Co Ltd | Hermetic mold compressor |
| CN2681439Y (en) * | 2004-01-14 | 2005-02-23 | 华中科技大学 | A self shunt excitation AC excitation power generating device |
| JP2006109623A (en) * | 2004-10-06 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Inverter controller and enclosed electric compressor |
| JP2019103325A (en) * | 2017-12-06 | 2019-06-24 | アイシン精機株式会社 | Motor controller |
| CN110313126A (en) * | 2017-03-29 | 2019-10-08 | 爱信艾达株式会社 | Rotary electric machine controller |
| CN112564317A (en) * | 2020-11-30 | 2021-03-26 | 安徽美芝精密制造有限公司 | Stator core, stator, permanent magnet synchronous motor, compressor and refrigeration equipment |
-
2021
- 2021-12-08 CN CN202111494417.4A patent/CN114079333B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353521A (en) * | 2003-05-28 | 2004-12-16 | Matsushita Electric Ind Co Ltd | Hermetic mold compressor |
| CN2681439Y (en) * | 2004-01-14 | 2005-02-23 | 华中科技大学 | A self shunt excitation AC excitation power generating device |
| JP2006109623A (en) * | 2004-10-06 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Inverter controller and enclosed electric compressor |
| CN110313126A (en) * | 2017-03-29 | 2019-10-08 | 爱信艾达株式会社 | Rotary electric machine controller |
| JP2019103325A (en) * | 2017-12-06 | 2019-06-24 | アイシン精機株式会社 | Motor controller |
| CN112564317A (en) * | 2020-11-30 | 2021-03-26 | 安徽美芝精密制造有限公司 | Stator core, stator, permanent magnet synchronous motor, compressor and refrigeration equipment |
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| CN114079333B (en) | 2023-07-28 |
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