CN104716802B - The sine-wave permanent magnet synchronous motor and its manufacture method of a kind of low slot effect - Google Patents
The sine-wave permanent magnet synchronous motor and its manufacture method of a kind of low slot effect Download PDFInfo
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- CN104716802B CN104716802B CN201510161868.4A CN201510161868A CN104716802B CN 104716802 B CN104716802 B CN 104716802B CN 201510161868 A CN201510161868 A CN 201510161868A CN 104716802 B CN104716802 B CN 104716802B
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Abstract
The invention provides a kind of sine-wave permanent magnet synchronous motor of low slot effect and its manufacture method, wherein, motor includes semi-enclosed slot Stamped steel type stator and surface-mount type rare earth permanent-magnetic material excitation rotor, provided with 36 stator slots in semi-enclosed slot Stamped steel type stator；Surface-mount type Rare-Earth Magnetic material excitation rotor includes steel bushing, magnet steel and rotor punching；Eight blocks of magnet steel are separately mounted between positioning tooth two-by-two, and steel bushing is set in the periphery of eight blocks of magnet steel.Manufacture method is including step：Calculate per the slot number corresponding to extremely every phase, the magnetic pole angular range that distribution magnetic pole takes in rotor circumference, sets the positioning tooth of corresponding radian spacing, magnet steel is fixed between each positioning tooth, the steel bushing on the periphery set of magnet steel, rotor is pivotally mounted in stator.Each magnetic pole reasonable distribution in rotor circumference, is made the teeth groove magnetic resistance of rotor unspecified angle in 360 ° of mechanical angles of stator circumference equal, improves the stationarity and control accuracy of motor torque by the motor and its manufacture method.
Description
Technical field
The invention provides a kind of sine-wave permanent magnet synchronous motor and its manufacture method, especially a kind of low slot effect
Sine-wave permanent magnet synchronous motor and its manufacture method.
Background technology
The slot effect of rare earth permanent-magnet synchronization motor, has been the bad effect existed always since being come out from permagnetic synchronous motor
Should, and be the thorny problem that Electrical Engineers have to try every possible means to solve.Domestic and international magneto is made a general survey of, engineers are thought
Many methods, for example:Stator punching uses closed slot；Open slot magnetic slot-seal；Skewed stator slot；Skewed-rotor；Siemens's electricity
Machine is using methods such as interval magnet short-cut path design philosophys.It is optimal using west gate sub-motor effect from the point of view of histamine result.Other method
It can not effectively weaken the harmful effect that slot effect is brought.It is right but the manufacturing process technology difficulty of west gate sub-motor is very big
Mould requires very high, and assembly technology is special, and motor stator is disposable, if stator burns, it is impossible to repair.Therefore
It is domestic not yet to use such a technology.
The content of the invention
The technical problem to be solved in the present invention is that the slot effect inhibition of existing sine-wave permanent magnet synchronous motor is poor,
Influence the delivery efficiency of sine-wave permanent magnet synchronous motor.
In order to solve the above-mentioned technical problem, the invention provides a kind of sine-wave permanent magnet synchronous motor of low slot effect,
Including semi-enclosed slot Stamped steel type stator and surface-mount type rare earth permanent-magnetic material excitation rotor, sine-wave permanent magnet synchronous motor is three-phase
Motor and facies tract are provided with 36 stator slots in 60 °, semi-enclosed slot Stamped steel type stator；Surface-mount type Rare-Earth Magnetic material excitation rotor bag
Include a steel bushing, eight blocks of magnet steel and rotor punching；The center of rotor punching is provided with armature spindle mounting hole, armature spindle mounting hole
Circumferential edges provided with eight semicircular synchronous breach；The excircle of rotor punching is provided with eight positioning tooths, eight blocks of magnetic
Steel is pasted respectively to be fixedly mounted between positioning tooth two-by-two；Angle between eight positioning tooths respectively be 50 °, 44 °, 44 °,
44 °, 46 °, 44 °, 44 ° and 44 °；Steel bushing is set in the periphery of eight blocks of magnet steel, and eight blocks of magnet steel are between steel bushing and rotor punching
Between；The locating notch of a top beveling is additionally provided with the circumferential edges of armature spindle mounting hole.
The motor uses and 36 stator slots is set in stator, and provided between eight angles on the excircle of rotor punching
Every respectively 50 °, 44 °, 44 °, 44 °, 46 °, 44 °, 44 ° and 44 ° of positioning tooth, make rotor in 360 ° of mechanical angles of stator circumference
Interior unspecified angle is all that teeth groove magnetic resistance is equal, effectively increases stationarity and the control of sine-wave permanent magnet synchronous motor torque
Precision processed；The periphery of eight blocks of magnet steel is set in using steel bushing, effectively magnet steel can be prevented to be thrown out of, the installation for improving magnet steel is strong
The security that degree and rotor are used；Armature spindle rotor driven punching synchronous axial system can be facilitated using synchronous breach；Using top
The locating notch of portion's beveling can either further synchronize fixation to rotor punching, can prevent again when rotor punching is stacked
There is the problem of positive and negative is reverse；It can effectively prevent magnet steel from being rocked on rotor punching using positioning tooth, improve and turn
Steadiness of the son in operation process.
Scheme as a further improvement on the present invention, rotor punching it is unilateral on be uniformly provided with multiple lightening holes.Using subtracting
Repeated hole can effectively reduce the rotary inertia of rotor, can also save production cost.
Present invention also offers a kind of method for the sine-wave permanent magnet synchronous motor for manufacturing low slot effect, including following step
Suddenly：
Step 1, the radian according to corresponding to the number of stator slots, the number of phases and facies tract of motor calculate every extremely every phase；
Step 2, exist further according to the radian and the rotor magnetic pole number of motor corresponding to every extremely every phase to distribute each magnetic pole
Shared magnetic pole angular range, makes the teeth groove magnetic resistance of rotor unspecified angle in 360 ° of mechanical angles of stator circumference in rotor circumference
It is equal；
Step 3, the positioning tooth of corresponding radian spacing is fixedly installed in rotor circumference further according to magnetic pole angular range, and will
The magnet steel of corresponding radian is fixed between two positioning tooths of corresponding position；
Step 4, steel bushing then in the periphery of magnet steel is covered, magnet steel is located between steel bushing and rotor circumference；
Step 5, rotor is inserted in stator, and rotary type is installed.
Using per extremely per the radian and the rotor magnetic pole number of motor corresponding to phase come reasonable distribution each magnetic pole in rotor
Shared magnetic pole angular range, makes the teeth groove magnetic resistance phase of rotor unspecified angle in 360 ° of mechanical angles of stator circumference on circumference
Deng effectively weakening slot ripples, improve the counter potential waveform of motor.
The beneficial effects of the present invention are：(1) using 36 stator slots of setting in stator, and in the cylindrical of rotor punching
Week, provided with the positioning tooth that eight angle intervals are respectively 50 °, 44 °, 44 °, 44 °, 46 °, 44 °, 44 ° and 44 °, makes rotor exist
Unspecified angle in 360 ° of mechanical angles of stator circumference is all that teeth groove magnetic resistance is equal, effectively increases sine-wave permanent magnet synchronous motor
The stationarity and control accuracy of torque；(2) periphery of eight blocks of magnet steel is set in using steel bushing, can effectively prevent that magnet steel from being got rid of
Go out, improve the security that the installation strength and rotor of magnet steel are used；(3) armature spindle can be facilitated to drive using synchronous breach
Rotor punching synchronous axial system；(4) locating notch chamfer using top further can either synchronize fixation to rotor punching,
It can prevent occurring the problem of positive and negative is reverse when rotor punching is stacked again；(5) magnet steel can effectively be prevented using positioning tooth
Rocked on rotor punching, improve steadiness of the rotor in operation process.
Brief description of the drawings
Fig. 1 is rotor punching structure schematic diagram of the invention；
Cogging torque view when Fig. 2 is decile rotor magnetic pole in the prior art；
Fig. 3 is the cogging torque view after magnetic pole dutycycle optimization in the motor of the present invention；
Nominal torque curve maps of the Fig. 4 for motor of the invention in startup and operation；
As shown in Fig. 2 the longitudinal axis is the shock range of cogging torque, unit Nm, transverse axis is rotor rotational angle, and unit is
Degree；
As shown in figure 3, the longitudinal axis is the shock range of cogging torque, unit Nm, transverse axis is rotor rotational angle, and unit is
Degree；
As shown in figure 4, the longitudinal axis is nominal torque value, unit is Nm, and transverse axis is run time, and unit is millisecond.
Embodiment
As shown in figure 1, the sine-wave permanent magnet synchronous motor of the low slot effect of the present invention includes：Semi-enclosed slot Stamped steel type is determined
Son and surface-mount type rare earth permanent-magnetic material excitation rotor, sine-wave permanent magnet synchronous motor is three phase electric machine and facies tract is 60 °, semi-closure
Provided with 36 stator slots in mouth groove Stamped steel type stator.
Surface-mount type Rare-Earth Magnetic material excitation rotor includes a steel bushing 1, eight blocks of magnet steel 2 and rotor punching 3.Wherein, exist
The center of rotor punching 3 is provided with armature spindle mounting hole 8, provided with eight semicircles on the circumferential edges of armature spindle mounting hole 8
Synchronous breach 4；Provided with eight positioning tooths 6 on the excircle of rotor punching 3, eight blocks of magnet steel 2 are pasted respectively to be fixedly mounted on
Two-by-two between positioning tooth 6；Angle between eight positioning tooths 6 respectively is α 1=50 °, α 2=44 °, α 3=44 °, α 4=
44 °, α 5=46 °, α 6=44 °, α 7=44 ° and α 8=44 °；Steel bushing 1 is set in the periphery of eight blocks of magnet steel 2, and eight blocks of magnet steel 2
Between steel bushing 1 and rotor punching 3；The positioning of a top beveling is additionally provided with the circumferential edges of armature spindle mounting hole 8
Breach 5；Rotor punching 3 it is unilateral on be uniformly provided with multiple lightening holes 7.
The sine-wave permanent magnet synchronous motor of the low slot effect of the present invention during fabrication, comprises the following steps：
Step 1, the radian according to corresponding to the number of stator slots, the number of phases and facies tract of motor calculate every extremely every phase；
Step 2, exist further according to the radian and the rotor magnetic pole number of motor corresponding to every extremely every phase to distribute each magnetic pole
Shared magnetic pole angular range, makes the teeth groove magnetic resistance of rotor unspecified angle in 360 ° of mechanical angles of stator circumference in rotor circumference
It is equal；
Step 3, the positioning tooth 6 of corresponding radian spacing is fixedly installed on the circumference of punching 3 further according to magnetic pole angular range, its
In, the angle interval between positioning tooth 6 is respectively α 1=50 °, α 2=44 °, α 3=44 °, α 4=44 °, α 5=46 °, α 6 two-by-two
=44 °, α 7=44 ° and α 8=44 °, and by the magnet steel 2 of corresponding radian be fixed on corresponding position two positioning tooths 6 it
Between；
Step 4, steel bushing 1 then in the periphery of magnet steel 2 is covered, magnet steel 2 is located between steel bushing 1 and the circumference of rotor punching 3；
Step 5, rotor is inserted in stator, and rotary type is installed.
If as shown in Fig. 2 in the case of not using any measure in the prior art, and rotor magnetic pole only is carried out into equally divided position
During reason, cogging torque will appear in the waveform shape of the dipping and heaving centered on 0Nm, and shock range even can reach -9Nm
~9Nm, if carrying out motor control under the conditions of such cogging torque, will cause driver low speed occur in controlled motor and trembles
Dynamic phenomenon and low speed stepping phenomenon.
As shown in figure 3, the sine-wave permanent magnet synchronous motor using the present invention or the sine of the method manufacture using the present invention
Ripple permagnetic synchronous motor, provided with 36 stator slots in the stator of motor, pastes provided with eight blocks of magnet steel on rotor punching circumference
2, the angle of the circumference of rotor punching 3 occupied by eight blocks of magnet steel 2 is respectively α 1=50 °, α 2=44 °, α 3=44 °, α 4=44 °, α 5
=46 °, α 6=44 °, α 7=44 ° and α 8=44 °, so that magnetic pole dutycycle be optimized, make rotor in stator circumference
The teeth groove magnetic resistance of unspecified angle is equal in 360 ° of mechanical angles.Then in the control process of driver, as a result of above-mentioned
The optimization of magnetic pole dutycycle, cogging torque, all close to 0Nm, essentially eliminates what cogging torque was operated to motor in any position
Influence, realizes steady torque, smooth speed control, vibrates small and small noise effect, improve fast response time, the control of motor
Performance and control accuracy processed.
As shown in figure 4, when sine-wave permanent magnet synchronous motor starts, due to justifying to rotor punching 3 occupied by eight blocks of magnet steel 2
The angle in week is optimized, and it is respectively α 1=50 °, α 2=44 °, α 3=44 °, α 4=44 °, α 5=46 °, α 6 to make all angles
=44 °, α 7=44 ° and α 8=44 °, then nominal torque larger concussion is occurred in that in 20 milliseconds of electric motor starting, and
Shock range tends towards stability in 20~40 milliseconds, i.e., tended to be steady rapidly in motor can be upon actuation 40 milliseconds, and
250Nm or so is maintained essentially in, higher response speed and operation stability is shown.
Claims (2)
1. a kind of sine-wave permanent magnet synchronous motor of low slot effect, including semi-enclosed slot Stamped steel type stator and surface-mount type rare earth
Permanent-magnet material excitation rotor, it is characterised in that：The sine-wave permanent magnet synchronous motor is three phase electric machine and facies tract is 60 °, described
Provided with 36 stator slots in semi-enclosed slot Stamped steel type stator；The surface-mount type Rare-Earth Magnetic material excitation rotor include steel bushing,
Eight blocks of magnet steel and rotor punching；The center of the rotor punching is provided with armature spindle mounting hole, the armature spindle mounting hole
Circumferential edges are provided with eight semicircular synchronous breach；The excircle of the rotor punching is provided with eight positioning tooths, eight pieces
Magnet steel is pasted respectively to be fixedly mounted between positioning tooth two-by-two；Angle between eight positioning tooths respectively be 50 °, 44 °,
44 °, 44 °, 46 °, 44 °, 44 ° and 44 °；The steel bushing is set in the periphery of eight blocks of magnet steel, and eight blocks of magnet steel between steel bushing and
Between rotor punching；The locating notch of a top beveling is additionally provided with the circumferential edges of the armature spindle mounting hole；
The rotor punching it is unilateral on be uniformly provided with multiple lightening holes.
2. a kind of method of the sine-wave permanent magnet synchronous motor of the low slot effect described in manufacturing claims 1, it is characterised in that
Comprise the following steps：
Step 1, the radian according to corresponding to the number of stator slots, the number of phases and facies tract of motor calculate every extremely every phase；
Step 2, each magnetic pole is distributed in rotor further according to the radian and the rotor magnetic pole number of motor corresponding to every extremely every phase
Shared magnetic pole angular range, makes the teeth groove magnetic resistance phase of rotor unspecified angle in 360 ° of mechanical angles of stator circumference on circumference
Deng；
Step 3, the positioning tooth of respective angles spacing is fixedly installed in rotor circumference further according to magnetic pole angular range, and will be corresponding
The magnet steel of radian is fixed between two positioning tooths of corresponding position；
Step 4, steel bushing then in the periphery of magnet steel is covered, magnet steel is located between steel bushing and rotor circumference；
Step 5, rotor is inserted in stator, and rotary type is installed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161868.4A CN104716802B (en) | 2015-04-07 | 2015-04-07 | The sine-wave permanent magnet synchronous motor and its manufacture method of a kind of low slot effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161868.4A CN104716802B (en) | 2015-04-07 | 2015-04-07 | The sine-wave permanent magnet synchronous motor and its manufacture method of a kind of low slot effect |
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| CN104716802A CN104716802A (en) | 2015-06-17 |
| CN104716802B true CN104716802B (en) | 2017-08-22 |
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| CN110350694A (en) * | 2019-08-21 | 2019-10-18 | 苏州金莱克汽车电机有限公司 | A kind of low noise and the strong permanent magnet synchronous AC motor of fan-out capability |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4742259A (en) * | 1987-05-11 | 1988-05-03 | Franklin Electric Co., Inc. | Permanent magnet rotor for electric motor |
| EP1217713B1 (en) * | 2000-12-20 | 2010-02-10 | Yamaha Motor Electronics Kabushiki Kaisha | Permanent magnet type rotor and permanent magnet type rotary electrical machine |
| CN201107841Y (en) * | 2007-10-22 | 2008-08-27 | 沈阳工业大学 | Permanent magnet synchronous motor of sine pole width modulation |
| CN201918814U (en) * | 2010-11-22 | 2011-08-03 | 重庆红宇精密工业有限责任公司 | Rotor of servo permanent-magnet synchronous motor |
| CN203301264U (en) * | 2013-04-12 | 2013-11-20 | 杭州中科赛思伺服电机有限公司 | Permanent magnet servo motor rotor magnetic steel fixed topology structure |
| CN203301256U (en) * | 2013-04-12 | 2013-11-20 | 杭州中科赛思伺服电机有限公司 | Segmented rotor skew pole structure |
| CN203339916U (en) * | 2013-07-02 | 2013-12-11 | 杭州通灵自动化股份有限公司 | Permanent-magnet synchronous motor rotor |
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