CN204886612U - Slot combination structure of 30 sextupole threephase asynchronous machine stators and rotor - Google Patents
Slot combination structure of 30 sextupole threephase asynchronous machine stators and rotor Download PDFInfo
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Abstract
The utility model relates to a slot combination structure of 30 sextupole threephase asynchronous machine stators and rotor decides the rotor slot combination by 4 kinds and constitutes, and the stator number of slots is 324300, 324276, 324264, 324258 with rotor number of slots complex scheme. At 324300 o'clock, decide the rotor punching and divide into 18 and 15 respectively, at 324276 o'clock, decide the rotor punching and divide into 18 and 12 respectively, at 324264 o'clock, decide the rotor punching and divide into 18 and 12 respectively, at 324258 o'clock, decide the rotor punching and divide into 18 and 12 respectively, decide the rotor cell type and be the rectangular channel, decide that the air gap is 3-6mm between the rotor. These 4 kinds of slot combination noises, stray less, efficiency, power factor are higher, have solved 30 sextupole threephase asynchronous machine and have not had the optional problem of slot combination. The utility model is suitable for a three generations's nuclear power sea water circulating water pump motor can extensively be used for trades such as nuclear power, seawater desalination.
Description
Technical field
The utility model belongs to technical field of motors, is specifically related to the slot fit structure of 30 sextupole threephase asynchronous machine stators and rotor.
Background technology
Along with the development of three generations's nuclear power technology, sea water circulating pump requires significantly to promote seawater flow, and increasing substantially of pump capacity directly causes the torque of required drive motors to increase, and more low torque is larger for the more rotating speeds of motor pole number.According to the requirement of AP1000 three generations nuclear power technology, the number of poles of circulating water pump threephase asynchronous machine is 30 sextupoles, synchronous speed is 166.7 (r/min), and specified Driving Torque is about 450000Nm, and the asynchronous machine number of poles of current largest domestic is no more than 28 poles.System in Large Circulating Water Pump motor has strict demand to noise when running, noise of motor is not more than 85dB (A weighted), the rotor of threephase asynchronous machine coordinates selection huge to performance impact, and coordinating between number of stator slots with rotor number is called for short rotor slot fit.It is available that current 30 sextupole threephase asynchronous machines do not have ripe slot fit; Therefore, need to develop 30 new sextupole threephase asynchronous machine rotor slot fit to fill the domestic gaps.The more rotating speeds of number of poles of motor are lower, noise of motor is primarily of formations such as electromagnetic noise, ventilation noise, bearing noises, when motor speed is lower time, ventilation noise and bearing noise less, at this moment electromagnetic noise then becomes and determines the decisive factor of noise of motor; Therefore choose reasonable rotor slot fit, can harmonic inhabitation, reduces noise, improves starting performance, obtains higher efficiency and power factor.
Summary of the invention
The purpose of this utility model provides the slot fit structure of 30 sextupole threephase asynchronous machine stators and rotor, can obtain larger starting torque, lower electromagnetic noise and vibration, higher efficiency and power factor, less exciting current, lower supplementary load loss.The technical solution of the utility model is: the slot fit structure of 30 sextupole threephase asynchronous machine stators and rotor,
Comprise stators and rotators, described stators and rotators is overrided to form by stator punching (1) and rotor punching (2) respectively, and the groove number of described stator is 324, and described rotor number is between 258 to 300; Rotor is straight groove structure, and between stator punching (1) and rotor punching (2), air gap (5) is 3 ~ 6mm; The stator slot (3) of stator punching (1) is rectangular aperture type, and the rotor (4) of rotor punching (2) is the half-open shape of the mouth as one speaks of rectangle; The groove number of stator is 324, and rotor number is 300, and described stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 15, is namely formed by 15 the first rotor fanning strips (12) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process, and air gap (5) is 4.5mm; The groove number of stator is 324, and rotor number is 276, and described stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely formed by 12 the second rotor fanning strips (13) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process; The groove number of stator is 324, and rotor number is 264, and described stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely formed by 12 third trochanter fanning strips (14) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process; The groove number of stator is 324, and rotor number is 258, and described stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely connected in turn by 6 fourth trochanter fanning strips (15) and 6 the 5th rotor fanning strips (16); The lamination process of rotor punching (2) is 1/2 lamination process.
Rotor slot fit of the present utility model can obtain larger starting torque, lower electromagnetic noise and vibration, higher efficiency and power factor, less exciting current, lower supplementary load loss, considers significantly to suppress high order harmonic component.Number of stator slots is set to Z1, and rotor number is set to Z2, and motor number of pole-pairs is p, and motor pole number is P, P=2p, s is motor slip ratio, and q is MgO-ZrO_2 brick, and a is winding parallel circuitry number, and Reeb is r0.
Rotor slot fit has a great impact asynchronous motor torque.Magnetic field in the air gap of asynchronous machine can be decomposed into series of harmonic, and this concentrates due to winding on the one hand and is placed in groove, also produces because fluting causes non-uniform air-gap on the other hand.Because any one can be had an effect to rotor, therefore additional torque can be produced, so synthesis torque equals the torque sum that all harmonic fields produce.Number of stator slots is more, and asynchronous machine additional torque is less, and motor is in starting process, and annex torque is less to starting curve disturbance.In order to the additional torque that harmonic inhabitation produces, rotor number Z2≤1.25 × Z1; In order to limit the impact of poor stray field on motor starting performance, │ Z2-Z1 ± p │ >=4; In order to avoid synchronous torque time static, Z2 ≠ 6pn (n is arbitrary integer); When s < 1 (motor district), Z2 ≠ 6pn-2p (n is arbitrary integer); When s > 1 (braking district), Z2 ≠ Z1-6p.The general value of stator MgO-ZrO_2 brick q of large-size asynchronous motor is the integer between 2 ~ 6.
The noise of rotor slot fit and asynchronous machine has direct relation.Multipolar dynamo rotating speed is general lower, at this moment electromagnetic noise is Main Noise Sources, electromagnetic noise causes primarily of the Reeb vibration of high order harmonic component, and namely change with space in time, the power acted between the stator and the rotor can cause electromagnetic noise by stator core vibrating; A radial load in any point effect of air gap, square being directly proportional of its size in unit are and air gap flux density, therefore select alap air gap flux density necessary for Motor for Reducing Electromagnetic Noise, the air gap flux density of low noise asynchronous machine is generally between 0.6-0.75T.To meet for low noise motor: │ Z1-Z2 │ ≠ 0,1,2, │ Z1-Z2 │ ≠ 2p, 2p ± 1,2p ± 2; Also need to make the number of times of the air-gap permeance wave component that the number of times of the strongest stator-rotator magnetic kinetic potential component is not large with some consistent, │ Z1-Z2 │ ≠ p, │ Z1-Z2 │ ≠ p ± 1, │ Z1-Z2 │ ≠ p ± 2; When motor pole number more (2p >=8), if Z1/p≤18, │ Z1-Z2 │ ≠ 3p must be met, │ Z1-Z2 │ ≠ 3p ± 1.When having multiple parallel branch number for motor winding, │ Z1-Z2 │ ≠ │ (p/a) ± p ± 1 │ (when a is odd number) or │ Z1-Z2 │ ≠ │ (2p/a) ± p ± 1 │ (when a is even number) should be met as a > 2, as a=2, │ (Z2 ± 2p)-p (6n ± 1) │ ≠ 1 should be met.In order to this Reeb, r0 rank can not be formed, │ Z1-Z2 │ ≠ r0 should be met, │ Z1-Z2 │ ≠ 2p ± r0, as r0 > 6, generally not need to consider the impact of high-order Reeb, because masterpiece is used on a very short arm at that time; The size of stator amount of deflection and the high cube of stator yoke are inversely proportional to, the vibration that higher-order (being greater than 2 rank) occurs in multipolar dynamo in Reeb impact comes to be easy to many compared with the few pole motor often having quite large yoke high, therefore, especially concerning just necessary the high-voltage asynchronous motor with open slot of multipole.
The selection of rotor slot fit has stray loss largely to be affected, absolute portions in stray loss is the supplementary load loss of high order harmonic component, stray loss is a regulation general estimated value 0.5% in GB GB755-2008 " electric rotating machine quota and performance ", and the supplementary load loss caused due to high order harmonic component in engineering often make stray loss substantially exceed 0.5%, even part large-size machine reaches 1.5%, very large problem is brought to the type approval test of dispatching from the factory, product is caused to dispatch from the factory, or eat tolerance and dispatch from the factory, cause product fine rate significantly to reduce.Have supplementary load loss in the high-voltage motor mouse cage of open slot to limit stator, recommendations for selection number of stator slots is greater than rotor number, so motor be always likely designed to rotor need not the structure of skewed slot.In order to effectively reduce the pulsation loss in supplementary load loss, stator groove width (6) is 3 with the ratio of stator rabbet high (7), and rotor slot opening (8) is 1 with the ratio of rotor notch high (9).Number of stator slots is more, and the harmonic loss of high order harmonic component is less, and then reduces stray loss; Air gap (5) is less, and the exciting current of motor is less, and power factor is higher, but when air gap (5) is too small, is difficult to realize, and reduces motor reliability of operation when technique can be caused to assemble.
A lot of rotor slot fit can use flume structure when selecting, a stator tooth distance was turned round by rotor, because when certain slot fit must use, and its high order harmonic component amplitude is too high, rotor chute so just can be adopted to eliminate the impact of specific high order harmonic component, because the phase place of high order harmonic component and first-harmonic are identical, therefore cannot eliminate by the mode of stator winding short distance.If but select number of stator slots to be greater than rotor number, in possible situation be, comparatively suitable rotor slot fit can be found, make the amplitude of high order harmonic component lower, doing so avoids and use rotor chute structure, because flume structure complex process, and flume structure can bring the extra iron loss of rotor radial.When stator winding adopts delta-connection, rotor slot fit should meet │ Z1-Z2 │ ≠ 2p, 4p, 8p; When having parallel branch, winding solution used should make secondary armature reaction not produce, and loaded vehicle rotor surface is to prevent short circuit between sheet, and it is better that stator inner circle does not want loaded vehicle, if silicon steel sheet is unannealed, should use sharp keen pressing equipment.Slot fit of the present utility model mainly uses straight trough, does not need vertically by stator slot or the certain slot pitch of rotor skew.
The slot fit structure of 30 sextupole threephase asynchronous machine stators of the present utility model and rotor, mainly be applicable to 30 sextupole threephase asynchronous machines, wherein the groove number of stator punching (1) is 324, the groove number of rotor punching (2) is respectively 300,276,264,258, form four kinds of comparatively reasonably rotor slot fit schemes altogether, and 324/300,324/276,324/264,324/258.Stator groove width (6) is 3 with the ratio of stator rabbet high (7), and rotor slot opening (8) is 1 with the ratio of rotor notch high (9).The stator slot (3) of stator punching (1) is rectangular aperture type, and the rotor (4) of rotor punching stator punching (2) is the half-open shape of the mouth as one speaks of rectangle.
When rotor slot fit is 324/300 scheme, stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 15, is namely formed by 15 the first rotor fanning strips (12) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process.When rotor slot fit is 324/276 scheme, stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely formed by 12 the second rotor fanning strips (13) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process.When rotor slot fit is 324/264 scheme, stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely formed by 12 third trochanter fanning strips (14) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process.When rotor slot fit is 324/258 scheme, stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely connected in turn by 6 fourth trochanter fanning strips (15) and 6 the 5th rotor fanning strips (16); The lamination process of rotor punching (2) is 1/2 lamination process.
The utility model has started the rotor lamination structure of 30 sextupole threephase asynchronous machines, solve the problem that 30 sextupole threephase asynchronous machines are selected without rotor slot fit, by rationally arranging burst quantity and the mode of stator punching and rotor punching, inhibit the shaft voltage problem that stator produces because of burst; By limiting air gap value between rotor, making motor obtain higher power factor, also solving the stator core technological problems that frame bore that is that produce is overproof because air gap value is too small simultaneously.Comprehensive from the viewpoint of torque, noise, supplementary load loss, straight trough skewed slot etc., have selected comparatively reasonable four kinds of rotor slot fit, namely 324/300,324/276,324/264,324/258, make 30 sextupole threephase asynchronous machines can obtain larger starting torque, lower electromagnetic noise and vibration, higher efficiency and power factor, lower supplementary load loss.
Accompanying drawing explanation
The slot fit structure structure chart of Fig. 1 30 sextupole threephase asynchronous machine stators of the present utility model and rotor
Fig. 2 is I zoomed-in view of Fig. 1
Fig. 3 is a kind of rotor slot fit number of Fig. 1 is the schematic structure diagram of 324/300
Fig. 4 is a kind of rotor slot fit number of Fig. 1 is the schematic structure diagram of 324/276
Fig. 5 is a kind of rotor slot fit number of Fig. 1 is the schematic structure diagram of 324/264
Fig. 6 is a kind of rotor slot fit number of Fig. 1 is the schematic structure diagram of 324/258
Fig. 7 is the zoomed-in view of the item 11 of Fig. 3, Fig. 4, Fig. 5, Fig. 6
Fig. 8 is the zoomed-in view of the item 12 of Fig. 3
Fig. 9 is the zoomed-in view of the item 13 of Fig. 4
Figure 10 is the zoomed-in view of the item 14 of Fig. 5
Figure 11 is the zoomed-in view of the item 15 of Fig. 6
Figure 12 is the zoomed-in view of the item 16 of Fig. 6
Figure 13 to be rotor slot fit number be 324/300 unloaded electromagnetic torque curve figure
Figure 14 to be rotor slot fit number be 324/276 unloaded electromagnetic torque curve figure
Figure 15 to be rotor slot fit number be 324/264 unloaded electromagnetic torque curve figure
Figure 16 to be rotor slot fit number be 324/258 unloaded electromagnetic torque curve figure
Figure 17 to be rotor slot fit number be 324/300 load electromagnetic torque curve figure
Figure 18 to be rotor slot fit number be 324/276 load electromagnetic torque curve figure
Figure 19 to be rotor slot fit number be 324/264 load electromagnetic torque curve figure
Figure 20 to be rotor slot fit number be 324/258 load electromagnetic torque curve figure
Embodiment:
Fig. 1 is the slot fit structure structure of 30 sextupole threephase asynchronous machine stators and rotor, comprise stators and rotators, described stators and rotators is overrided to form by stator punching 1 and rotor punching 2 respectively, on this rotor slot fit application three generations nuclear power sea water circulating pump motor, motor model is YLKS7700-36, and number of poles is 30 sextupoles, rated speed 164r/min, nominal torque is 450000Nm, and breakdown torque is 810000Nm.
As shown in Figure 1, the groove number of stator punching 1 is 324, and rotor punching groove number divides 4 kinds to be 300,276,264,258, and stators and rotators is straight groove structure.
As shown in Figure 2, stator punching 1 is provided with stator slot 3, is provided with stator rabbet 10 in stator slot 3 lower end, and stator slot 3 is rectangular aperture type, and stator groove width 6 is 3 with the ratio of stator rabbet high 7; Rotor punching 2 is provided with rotor 4, and rotor 4 is the half-open shape of the mouth as one speaks of rectangle, and rotor slot opening 8 is 1 with the ratio of rotor notch high 9; Between stator punching 1 and rotor punching 2, air gap 5 is 3 ~ 6mm, and air gap 5 is 4.5mm.
As shown in Figure 3, the groove number of stator punching 1 is 324, and stator punching 1 is divided into 18, namely by 18 stator sector piece 11 successively uniform be connected form, the lamination process of stator punching 1 is 1/3 lamination process; The groove number of rotor punching 2 is 300, and rotor punching 2 is divided into 15, and namely formed by 15 the first rotor fanning strips 12 successively uniform being connected, each, the lamination process of rotor punching 2 is 1/2 lamination process.
As shown in Figure 4, the groove number of stator punching 1 is 324, and stator punching 1 is divided into 18, namely by 18 stator sector piece 11 successively uniform be connected form, the lamination process of stator punching 1 is 1/3 lamination process; The groove number of rotor punching 2 is 276, and rotor punching 2 is divided into 12, and namely formed by 12 the second rotor fanning strips 13 successively uniform being connected, each, the lamination process of rotor punching 2 is 1/2 lamination process.
As shown in Figure 5, the groove number of stator punching 1 is 324, and stator punching 1 is divided into 18, namely by 18 stator sector piece 11 successively uniform be connected form, the lamination process of stator punching 1 is 1/3 lamination process; The groove number of rotor punching 2 is 264, and rotor punching 2 is divided into 12, and namely formed by 12 third trochanter fanning strips 14 successively uniform being connected, each, the lamination process of rotor punching 2 is 1/2 lamination process.
As shown in Figure 6, the groove number of stator punching 1 is 324, and stator punching 1 is divided into 18, namely by 18 stator sector piece 11 successively uniform be connected form, the lamination process of stator punching 1 is 1/3 lamination process; The groove number of rotor punching 2 is 264, and rotor punching 2 is divided into 12, is namely connected in turn by 6 fourth trochanter fanning strips, 15 and 6 the 5th rotor fanning strips 16; The lamination process of rotor punching 2 is 1/2 lamination process.
As shown in Figure 7, the groove number of stator sector piece 11 is 18.
As shown in Figure 8, the groove number of the first rotor fanning strip 12 is 20.
As shown in Figure 9, the groove number of the second rotor fanning strip 13 is 23.
As shown in Figure 10, the groove number of third trochanter fanning strip 14 is 22.
As shown in figure 11, the groove number of fourth trochanter fanning strip 15 is 21.
As shown in figure 12, the groove number of the 5th rotor fanning strip 16 is 22.
As shown in figure 13, rotor slot fit number is the unloaded electromagnetic torque curve figure of 324/300,30 sextupole threephase asynchronous machine starting under no loads of application rotor slot fit 324/300 are steady, before torque curve, the significantly vibration interval of 0.25s is electromagnetic field establishment stage, electromagnetic field brings sags and crests without obvious high order harmonic component after setting up, and starting asynchronous motor is smooth.
As shown in figure 14, rotor slot fit number is the unloaded electromagnetic torque curve figure of 324/276,30 sextupole threephase asynchronous machine starting under no loads of application rotor slot fit 324/276 are steady, before torque curve, the significantly vibration interval of 0.25s is electromagnetic field establishment stage, electromagnetic field brings sags and crests without obvious high order harmonic component after setting up, and starting asynchronous motor is smooth.
As shown in figure 15, rotor slot fit number is the unloaded electromagnetic torque curve figure of 324/264,30 sextupole threephase asynchronous machine starting under no loads of application rotor slot fit 324/264 are steady, before torque curve, the significantly vibration interval of 0.25s is electromagnetic field establishment stage, electromagnetic field brings sags and crests without obvious high order harmonic component after setting up, and starting asynchronous motor is smooth.
As shown in figure 16, rotor slot fit number is the unloaded electromagnetic torque curve figure of 324/258,30 sextupole threephase asynchronous machine starting under no loads of application rotor slot fit 324/258 are steady, before torque curve, the significantly vibration interval of 0.25s is electromagnetic field establishment stage, electromagnetic field brings sags and crests without obvious high order harmonic component after setting up, and starting asynchronous motor is smooth.
As shown in figure 17, rotor slot fit number is the load electromagnetic torque curve figure of 324/300,30 sextupole threephase asynchronous machine bringing onto loads of application rotor slot fit 324/300 start steadily, before torque curve, the significantly vibration interval of 0.3s is electromagnetic field establishment stage, electromagnetic field brings sags and crests without obvious high order harmonic component after setting up, starting asynchronous motor is smooth, and asynchronous machine enters plateau after 1s, and its nominal torque is 446626 (Nm).
As shown in figure 19, rotor slot fit number is the load electromagnetic torque curve figure of 324/264,30 sextupole threephase asynchronous machine bringing onto loads of application rotor slot fit 324/264 start steadily, before torque curve, the significantly vibration interval of 0.3s is electromagnetic field establishment stage, electromagnetic field brings sags and crests without obvious high order harmonic component after setting up, starting asynchronous motor is smooth, and asynchronous machine enters plateau after 1.25s, and its nominal torque is 446211 (Nm).
As shown in figure 20, rotor slot fit number is the load electromagnetic torque curve figure of 324/258,30 sextupole threephase asynchronous machine bringing onto loads of application rotor slot fit 324/258 start steadily, before torque curve, the significantly vibration interval of 0.3s is electromagnetic field establishment stage, electromagnetic field brings sags and crests without obvious high order harmonic component after setting up, starting asynchronous motor is smooth, asynchronous machine enters plateau after 1.3s, and its nominal torque is 446342 (Nm) (Nm).
Table 1: each scheme is unloaded, load electromagnetic noise A weighted sound power level contrast number table
As shown in table 1, each scheme is unloaded, load electromagnetic noise A weighted sound power level contrast number, visible rotor slot fit, when number of stator slots does not become 324, when rotor number is 258 by 300 variations, electromagnetic noise time unloaded is down to 64.1dB by 84.4dB, and electromagnetic noise during load is down to 78.1dB by 93.5dB, and under each scheme, load is unloaded noise and exceeds about 10dB.
Table 2: each scheme motor performance calculation of parameter tables of data
As shown in table 2, each scheme motor performance calculation of parameter data, visible rotor slot fit, when number of stator slots does not become 324, when rotor number is 258 by rotor number by 300 variations, because air gap value all adopts 4.5mm, therefore exciting current does not change substantially, starting current increases, starting torque reduces, and rated current increases slightly, and nominal torque and rated speed are substantially constant, efficiency is down to 96.0% by 96.2%, and power factor is also slightly down to 0.7438 from 0.7582; Number of stator slots differs nearer with rotor number, and stray loss is lower, and efficiency is higher, and power factor (PF) is higher; But number of stator slots differs far away with rotor number as known from Table 14, and electromagnetic noise is lower; When motor is strict to noise requirements, can first-selected 324/258, secondly 324/264,324/276,324/300, when motor steadily requires strict to starting performance and torque, can first-selected 324/300, secondly 324/276,324/264,324/258.
In GB/T10069.3-2008 " electric rotating machine noise level measurement method and limit value the 3rd part: noise level limit ", be 5500kW to power, synchronous speed is 375rpm, the IC81W type of cooling of large-size machine, type of protection is IP55, and time unloaded, noise criteria is 104dB.Applicable motor stator of the present utility model is 30 sextupoles, and synchronous speed is 166.7rpm, and power is 7700kW, and standard GB/T10069.3-2008 specifies, idle operator lamp standard should more than 104dB.In the motor that number of poles is more, electromagnetic noise is larger than ventilation noise, the lower 4 kinds of schemes (324/300 of slot fit structure of 30 sextupole threephase asynchronous machine stators of the present utility model and rotor, 324/276, 300/264, 300/258), the total noise of motor can be made to be respectively 87.4 when zero load, 82.1dB, 76.1dB, 64.1dB, Wei 93.5dB at load time-division, 94.2dB, 89.1dB, 78.1dB, be far smaller than the constraint of standard 104dB, at the peripheral support of electric machine iron core, under the parcel of cover and peripheral denoising structure, total noise can also reduce about 15 ~ 20dB, consider, the motor of these four kinds of rotor slot fit runs overall noise all can not more than 85dB.
Claims (5)
1. the slot fit structure of 30 sextupole threephase asynchronous machine stators and rotor, it is characterized in that: comprise stators and rotators, described stators and rotators is overrided to form by stator punching (1) and rotor punching (2) respectively, the groove number of described stator is 324, and described rotor number is between 258 to 300; Rotor is straight groove structure, and between stator punching (1) and rotor punching (2), air gap (5) is 3 ~ 6mm; The stator slot (3) of stator punching (1) is rectangular aperture type, and the rotor (4) of rotor punching (2) is the half-open shape of the mouth as one speaks of rectangle; Stator groove width (6) is 3 with the ratio of stator rabbet high (7), and rotor slot opening (8) is 1 with the ratio of rotor notch high (9).
2. the slot fit structure of 30 sextupole threephase asynchronous machine stators according to claim 1 and rotor, it is characterized in that: the groove number of stator is 324, rotor number is 300, described stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 15, is namely formed by 15 the first rotor fanning strips (12) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process, and air gap (5) is 4.5mm.
3. the slot fit structure of 30 sextupole threephase asynchronous machine stators according to claim 1 and rotor, it is characterized in that: the groove number of stator is 324, rotor number is 276, described stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely formed by 12 the second rotor fanning strips (13) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process.
4. the slot fit structure of 30 sextupole threephase asynchronous machine stators according to claim 1 and rotor, it is characterized in that: the groove number of stator is 324, rotor number is 264, described stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely formed by 12 third trochanter fanning strips (14) successively uniform being connected; The lamination process of rotor punching (2) is 1/2 lamination process.
5. the slot fit structure of 30 sextupole threephase asynchronous machine stators according to claim 1 and rotor, it is characterized in that: the groove number of stator is 324, rotor number is 258, described stator punching (1) is divided into 18, namely by 18 stator sector piece (11) successively uniform be connected form; The lamination process of stator punching (1) is 1/3 lamination process, and rotor punching (2) is divided into 12, is namely connected in turn by 6 fourth trochanter fanning strips (15) and 6 the 5th rotor fanning strips (16); The lamination process of rotor punching (2) is 1/2 lamination process.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935136A (en) * | 2015-06-18 | 2015-09-23 | 哈尔滨电气动力装备有限公司 | Groove matching structure of stator and rotor of 36-pole three-phase asynchronous motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935136A (en) * | 2015-06-18 | 2015-09-23 | 哈尔滨电气动力装备有限公司 | Groove matching structure of stator and rotor of 36-pole three-phase asynchronous motor |
| CN104935136B (en) * | 2015-06-18 | 2017-05-10 | 哈尔滨电气动力装备有限公司 | Groove matching structure of stator and rotor of 36-pole three-phase asynchronous motor |
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