CN103795164B - Permasyn morot - Google Patents
Permasyn morot Download PDFInfo
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- CN103795164B CN103795164B CN201310494901.6A CN201310494901A CN103795164B CN 103795164 B CN103795164 B CN 103795164B CN 201310494901 A CN201310494901 A CN 201310494901A CN 103795164 B CN103795164 B CN 103795164B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The present invention provides a kind of to use the Magnet of relict flux density about 0.3T～0.5T, preferred ferrite magnet as premise the permasyn morot that can effectively reduce copper loss.The relict flux density of the permanent magnet of embedment rotor is set as the scope of 0.3T～0.5T, and the ratio St1/St2 of internal diameter (diameter) St1 and external diameter (diameter) St2 of stator of the stator of storage rotor is set as the scope of 0.53～0.69.Effectively reduce the copper loss of the permasyn morot of the permanent magnet that have employed the scope that relict flux density is in 0.3T～0.5T and seek the high efficiency of permasyn morot.
Description
Technical field
The present invention relates to permasyn morot, particularly relate to be embedded with the embedment structure type of permanent magnet in rotor core
Permasyn morot.
Background technology
In general, as at the automotive field such as electric automobile, hybrid vehicle and conditioner, refrigerator, adopt
With middle motor used such as the household appliance technical field such as the supplying hot water electrical equipment of heat pump, more use permasyn morot.Should
Permasyn morot is the synchronous motor employing permanent magnet in the magnetic field (magnetic pole) of rotor.
And, the widely used embedment structure having buried permanent magnet in rotor core underground in this permasyn morot
The permasyn morot (Interior Permanent Magnet Synchronous Motor) of type.This embedment structure type
Permasyn morot in magnetic field, imbed the rotor of permanent magnet by using, can not only utilize that permanent magnet is produced to be turned
Square, and (magnetic resistance turns to utilize the torque caused by asymmetry of the magnetic resistance (magnetic resistance) in magnetic field
Square).
But in order to improve the performance of permasyn morot, as long as the known magnetic field intensity strengthening the permanent magnet used
, the most more use rare earth element magnet using neodium magnet as representative as the strong Magnet of magnetic field intensity.Thereby, it is possible to
To little shape, high output, high efficiency permasyn morot.
Typically also, for, this permasyn morot according to installed machine (such as conditioner,
The heat pump of supplying hot water electrical equipment, refrigerator etc.) and limit its physique (so-called size).Therefore, permasyn morot with should answer
To problem corresponding to the exploration of optimum configuration, by not changing the external diameter of profile or stator side, and it is electronic to change composition
Size or the physical property of material, the characteristic etc. of the element (such as rotor, stator, winding wire etc.) of machine perform.
And, obtain as the exploration by this optimum configuration reducing cogging torque (cogging torque) forever
The example of magnetic-synchro motor, such as according to skill described in Japanese Unexamined Patent Publication 2006-101606 publication (patent documentation 1)
Art, proposes below scheme: so that use rare earth element magnet i.e. neodium magnet is as premise in the magnetic field of rotor, by the shape of groove (slot)
Shape is becomed privileged, and the relation of internal diameter (diameter) St1 of stator Yu external diameter (diameter) St2 of stator is set as St1/
St2=0.5～0.6, thus reduce reduction and the noise of the cogging torque of permasyn morot.
Patent documentation 1:JP JP 2006-101606 publication
But, it is high in the material cost of this permasyn morot middle rare earth class Magnet employing rare earth element magnet,
The raising of coercive force needs to add heavy rare earth class that yield as dysprosium (Dy) and terbium (Tb) is few in addition as purpose, therefore
Problem is there is from the viewpoint of material is prepared.It is therefore preferable that do not use rare earth element magnet and use can stable supplying with ferrum
Oxysome Magnet is the permanent magnet of representative.
But, usually the performance of permanent magnet is represented by relict flux density and coercive force the two physical quantity, such as, exist
In the case of ferrite magnet, relict flux density, coercive force are respectively substantially relative to the representative i.e. neodium magnet of rare earth element magnet
1/3 degree.Therefore, neodium magnet is merely being replaced in the permasyn morot of ferrite magnet, relict flux density
Reduction be associated with the increase to copper loss, the electric energy lost by the electrical resistance (winding wire resistance) of winding wire becomes many,
Significant performance is caused to reduce.
It addition, the above-mentioned technology described in patent documentation 1, for for reducing to use terres rares in the magnetic field of rotor
Magnet i.e. neodium magnet is as the exploration of the optimum configuration of the cogging torque of premise, for the permanent magnetism using ferrite magnet with reduction
The exploration of the optimum configuration of the problem that the problem of the copper loss of synchronous motor is different.
For usually, the relict flux density of neodium magnet arrives the most greatly 1.2T, but the relict flux of ferrite magnet is close
Degree is about 0.3T～0.5T.The most as described above, the permasyn morot of ferrite magnet is employed relative to making
By the permasyn morot of neodium magnet, the tendency phase increased with copper loss in result by the reduction of relict flux density
Association, the tendency of this change is the most different in addition.
On the other hand, the permasyn morot of ferrite magnet is employed relative to the permanent-magnet synchronous employing neodium magnet
Motor, relict flux density is little to about 0.3T～0.5T from about 1.2T, and therefore iron loss diminishes.But, if setting permanent-magnet synchronous
The torque becoming target of motor is identical, then employ the permasyn morot of ferrite magnet relative to employing neodymium magnetic
The permasyn morot of ferrum increases necessary current value.It is also relevant to increasing further of copper loss that current value increases this situation
Connection.
Therefore, the increasing of the permasyn morot of the ferrite magnet copper loss caused by the difference of Magnet is employed
Add and for obtaining becoming the increase of the electric current of the torque of target and that change is lost is big.Therefore, with the neodymium magnetic using same physique
The permasyn morot of ferrum is compared, and exists and employs the permasyn morot of ferrite magnet and reduce effect with causing big width
The problem of rate.
Make to use ferrite magnet by strongly owing to the preparation of neodium magnet becomes the background of the society of instability etc
Request, but due to above-mentioned reasons, the permasyn morot employ ferrite magnet can reduce copper loss
The exploration of optimum configuration becomes important.
It addition, represent at this ferrite magnet as can the Magnet of stable supplying, but this is exemplified with can be stably
The Magnet of the representative of supply, in addition may be used without replacing other Magnet of this Magnet, can use residual as this Magnet
Magnetic flux density is about the Magnet of 0.3T～0.5T.
Summary of the invention
It is an object of the invention to provide a kind of to use relict flux density to be about the Magnet of 0.3T～0.5T, preferred ferrum
Oxysome Magnet is as premise the permasyn morot that can be effectively reduced copper loss.
It is a feature of the present invention that the relict flux density of permanent magnet by embedment rotor is set as the model of 0.3T～0.5T
Enclose, and the ratio St1/St2 receiving internal diameter (diameter) St1 of the stator of rotor and external diameter (diameter) St2 of stator is set in
The scope of 0.53～0.69.
The effect of invention
By the present invention, it is effectively reduced the permanent magnet of the scope using relict flux density to be in 0.3T～0.5T forever
The copper loss of magnetic-synchro motor also seeks high efficiency.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the stator of the permasyn morot of one embodiment of the invention.
Fig. 2 be represent the internal diameter of the stator shown in Fig. 1 and the ratio i.e. boss ratio of external diameter and employ ferrite magnet with
And the performance plot of the relation of the copper loss of the permasyn morot of neodium magnet.
Fig. 3 is to represent the boss ratio of stator and the resistance value of winding wire and the square value of electric current flowed wherein
The performance plot of relation.
Fig. 4 is ratio i.e. summation external diameter ratio and the copper loss of summation and the external diameter of stator of the boss ratio to stator, tooth width
Relation be determined obtained mensuration figure.
Fig. 5 is ratio i.e. summation external diameter ratio and the copper loss of summation and the external diameter of stator of the boss ratio to stator, tooth width
Relation be determined obtained mensuration figure.
Fig. 6 is the longitudinal section of the stator of other permasyn morots implemented of the present invention.
Detailed description of the invention
Hereinafter, referring to the drawings embodiments of the present invention are described in detail, but the present invention is not limited to following
Embodiment, also includes various variation and application examples in the scope of the concept of the technology of the present invention.
It addition, as a example by enumerating ferrite magnet as permanent magnet in embodiments described below, but the present invention so that
Being about the Magnet of 0.3T～0.5T as premise by relict flux density, this is represented as ferrite magnet.
Fig. 1 represents the longitudinal section of the stator constituting permasyn morot.It addition, omit winding wire in FIG
The expression of (winding wire).Stator 10A is constituted by with lower part: core main body 12A being made up of magnetic；In core main body
Multiple groove 14A of the winding wire storage that the inner circumferential side of 12A is formed；Tooth (teeth) 16A formed between each groove 14A；With
Circular and the cross section that the outer circumferential side of core main body 12A is formed has the core back of the body (core back) 18A of the shape of waveform.
Tooth 16A has, with core back of the body 18A opposite side, the end 16A-1 that cross section is deformation T-shaped, this deformation T-shaped
End 16A-1 entirety forms the inner peripheral portion of stator 10A.Therefore, it is inserted into configuring rotor in the inner peripheral portion formed by end 16A-1
(not shown).The gap that rotor separates regulation in the inner peripheral portion of stator 10 is contained.Core back of the body 18A in groove 14A part outwards has
Big portion, the footpath 18A-1 of side bulging, little portion, the footpath 18A-2 fallen in inner side in tooth 16A part, this peripheral cross-section becomes waveform
Annulus.Being accommodated with the concentratred winding line being wound around by concentration in groove 14A, this stator 10A is based on concentrating the stator 10A being wound around.
In the stator 10A of this structure, carry out reducing use relict flux density and be about 0.3T～0.5T forever
Magnet (following, as being represented as ferrite magnet) is as the copper loss of the permasyn morot of the Magnet imbedded in the rotor
The exploration of optimum configuration.
The permasyn morot representing the permasyn morot using ferrite magnet in Fig. 2 and use neodium magnet
Boss ratio St1/St2 of the internal diameter St1 and external diameter St2 of stator 10A and the relation of the change of copper loss.Here, internal diameter St1 represents
The diameter of the inner peripheral portion of the stator 10A formed by the end 16A of deformation T-shaped, external diameter St2 represents that the footpath by core back of the body 18A is big
The diameter of the peripheral part of the stator 10A that portion 18A-1 is formed.
In Fig. 2, transverse axis being set to boss ratio St1/St2 of the internal diameter St1 and external diameter St2 of stator 10A, the longitudinal axis is set to forever
The size of the copper loss of magnetic-synchro motor.It addition, the exploration of the optimum configuration of permasyn morot is passed through in the present embodiment
Do not change the external diameter of stator, and change internal diameter and perform.In Fig. 2 in order to compare illustrate use ferrite magnet in the case of
Permasyn morot and employ the copper loss of permasyn morot in the case of neodium magnet.
As shown in Figure 2, the copper loss employing the permasyn morot in the case of ferrite magnet illustrates the most convex
Characteristic and there is the region that copper loss is low, the copper loss employing the permasyn morot in the case of neodium magnet has general planar
Characteristic.Therefore, it is known that in the case of employing ferrite magnet, there is the special region reducing copper loss as much as possible, exist
Even if exploring boss ratio St1/St2 in the case of employing neodium magnet to there is also copper loss less effective region.
And, its result, according to Fig. 2 understand like that the thickest in the direction, footpath thickness (St2-St1) of core region (in Fig. 2,
General boss ratio St1/St2 is 0.52 area below) and core direction, footpath thinner thickness region (in Fig. 2, probably inside and outside
Footpath is the region of more than 0.70 than St1/St2) in copper loss increase relatively big, boss ratio St1/St2 be 0.53≤St1/St2≤
The specific region copper loss of 0.69 reduces.It addition, below, St1/St2 is recited as 0.53～0.69.Therefore, it is known that if it is determined that
The internal diameter St1 and external diameter St2 of stator are so that this boss ratio St1/St2 enters into the scope of 0.53～0.69 and then can reduce copper
Damage.Additionally, even at boss ratio St1/St2=0.53～the scope of 0.69, boss ratio St1/St2 is preferably used and is in
The scope of 0.57≤St1/St2≤0.64 (St1/St2=0.57～0.64) then finds that copper loss reduces further.
Here, in the exploration of the present embodiment, footpath, the periphery St2 of big portion, the footpath 18A-1 of core back of the body 18A and the outermost of groove 14A
The core across back degree Lcb of the difference i.e. core back of the body 18A of the diameter St3 of perimembranous is decided to be 0.8 × 2T p≤Lcb≤1.6 × 2T p's
Scope.Here, the length of the cross-sectional width of the circumferential direction that T is tooth 16A, p is every every pole groove number mutually.The core back of the body of this core back of the body 18A
Width Lcb is the parameter that should consider on the basis of reducing copper loss.
As described above, in the present embodiment according to the stator 10 of the permasyn morot that have employed ferrite magnet
Boss ratio St1/St2 explore how copper loss changes, find to be in the 0.53 of specific scope in boss ratio St1/St2
～0.69 region in there is the state that copper loss is low.The region reduced as copper loss, finds more preferably in boss ratio St1/St2
It is that the scope of 0.57～0.64 can reduce copper loss further.Employ can be stably supplied therefore, it is possible to reduce as much as possible
The copper loss of permasyn morot of ferrite magnet, using the teaching of the invention it is possible to provide efficient permasyn morot.
It follows that copper loss is illustrated according to the relation of target torque and current value.
Such as in the case of being changed to ferrite magnet from neodium magnet, the relict flux density of permanent magnet becomes to be about 1/3.
The Magnet torque type of permasyn morot is represented by Formula 1 below.
(formula 1)
(τm: torque, E0: zero load induction power, ω: speed, iq:q shaft current, ΨP: magnetic flux)
It follows that magnetic flux ΨPProportional to the relict flux density of Magnet, therefore it is being changed to from neodium magnet
In the case of ferrite magnet, magnetic flux ΨPBecome to be about 1/3, in order to export the electricity of q shaft current necessary to same torque
Flow valuve needs about 3 times in the case of employing ferrite magnet.Accordingly, because copper loss (Joule heat) is by Formula 2 below table
Show, thus the increase of current value is the most preferred.
(formula 2)
Pcu=I2R
(PCU: copper loss, I: the electric current of flowing, the resistance of R: winding wire in winding wire)
I.e., in order to obtain same torque and the current value of q shaft current becomes to be about 3 times, if thus resistance value do not become
Change then by current value square and copper loss becomes about 9 times.9 times are become, it is known that have employed ferrite magnet by this copper loss
The efficiency of permasyn morot reduces.
In the case of have employed ferrite magnet as above, the composition of loss is that copper loss occupies major part, therefore
Increase magnet surface is needed to amass and guarantee magnetic flux in order to permasyn morot being carried out high efficiency with same physique
ΨPReduce copper loss.Amass and magnetic flux Ψ to increase magnet surfacePCan be by increasing embedment ferrite magnet
The diameter of rotor comes corresponding.I.e., the diameter of rotor is relevant to the internal diameter St1 of stator 10, therefore by suitable from 0.57～0.69
Local boss ratio St1/St2 selecting stator 10A can set suitable current value, can reduce current value.
On the other hand, copper loss P is constitutedcuThe resistance R of winding wire represented by Formula 3 below.
(formula 3)
R=ρ L/A
(sectional area of the length of ρ: resistivity, L: winding wire, A: winding wire)
Here, the sectional area of the groove portion 14A that sectional area A is the region being wound around winding wire of so-called winding wire and winding wire
Fill-in ratio (lamination factor) is long-pending, if not changing the external diameter St2 of stator 10A, then by the increasing of the diameter of rotor
Add, i.e. the increase of internal diameter St1 of stator 10A and the sectional area of groove 14 diminishes, thus the sectional area A of winding wire also reduces.
Setting boss ratio St1/St2 in Fig. 3 as transverse axis, the longitudinal axis represents resistance value and the flowing in winding wire of winding wire
The square value of electric current.The most also according to not changing the mode of external diameter of stator 10 to distribute boss ratio St1/St2.
The square value of electric current is thinning and subtract further along with direction, the footpath thickness St2-St1 of the increase of boss ratio St1/St2, i.e. core
Little, resistance value increases together with the increase of boss ratio St1/St2 and carries out in turn, these resistance values and the square value of electric current
The long-pending variation characteristic as the copper loss shown in Fig. 2 represent.Additionally, as it is shown on figure 3, resistance value is according to core across back degree Lcb's
Thickness and change, the management the most thus caused also is important.
Anticipation is copper loss P due to core across back degree LcbCUThe scope becoming minimum boss ratio St1/St2 is the most different.This
If length T of the width of tooth 16A, every the most every pole groove number p and the relation of core across back degree Lcb as described above in embodiment
It is 0.8 × 2T p≤Lcb≤1.6 × 2T p, then in boss ratio St1/St2=0.53 of stator 10～the scope of 0.69
Copper loss P can be reduced as much as possiblecu。
Additionally, it is believed that the region of copper loss step-down is indefinite in the case of have employed the permasyn morot of neodium magnet it is
The impact caused due to magnetic saturation is big, and magnet surface amasss and magnetic flux ΨPProportionate relationship be false.As it has been described above,
Employ and the permasyn morot of neodium magnet has the characteristic occurring specific regions as the present embodiment the most clearly.
On the other hand, as in the present embodiment, via the research (exploration that copper loss reduces) reducing copper loss etc as much as possible
Boss ratio St1/St2 making at least stator 10A is in the specific scope of 0.53～0.69 such that it is able to employ ferrum
The efficiency of the permanent magnet motor of oxysome Magnet increases significantly.
It follows that to summation Tt of length T of the width of full tooth 16A and the optimal relation of the external diameter St2 of stator 10A,
Summation external diameter illustrates than Tt/St2.Here, summation Tt tooth 16A in FIG is 9, therefore summation Tt=9 × T.And,
By the investigation of inventor etc., can distinguish that summation external diameter is bigger than Tt/St2 in the case of using easy magnetically saturated neodium magnet
More can reduce copper loss, in the case of using ferrite magnet, summation external diameter is less than Tt/St2 more can reduce copper loss.Additionally, sentence
Bright Tt/St2 also has dependency with boss ratio St1/St2 of above-mentioned stator 10.Therefore, it is known that if employing ferrum oxygen
In the permasyn morot of magnet body, boss ratio St1/St2 based on stator 10A, collects summation external diameter than Tt/St2
In the scope of regulation, then can reduce copper loss further.But, this summation external diameter body than Tt/St2 Yu permasyn morot
Lattice, the torque capacity becoming target also have dependency.
The scope of the summation external diameter that can reduce caused by the size of this torque capacity copper loss than Tt/St2 is said
Bright.Copper loss measured value shown in Fig. 4 is the ferrite magnet employing the scope that torque capacity τ m is in 1Nm≤τ m ＜ 5Nm
The measurement result of the copper loss of permasyn morot.Additionally, the output Pout of this permasyn morot be in 1kW≤Pout≤
The scope of 5kW.
In Fig. 4, transverse axis is boss ratio St1/St2 of stator 10A, and the longitudinal axis is that summation external diameter compares Tt/St2.Above-mentioned
In the scope of big torque the permasyn morot of operating with boss ratio St1/St2 of stator 10A be 0.53～0.69 and
Summation external diameter is Tt/St2≤0.73-20 (St1/St2-0.64) than Tt/St22Scope be operated as center.
And, Fig. 4 represents the line (hereinafter referred to as etc. copper loss line) of the value connecting identical copper loss.As shown in Figure 4, by
Boss ratio St1/St2 of stator 10 be 0.53～0.69 and summation external diameter be Tt/St2≤0.73-20 (St1/ than Tt/St2
St2-0.64)2The part that the scope determined is surrounded reduces copper loss.Such as Tt/St2≤0.73-20 (St1/St2-
0.64)2Scope can as inner side etc. value near copper loss line read.
As it has been described above, employ torque capacity τ m be in 1Nm≤τ m ＜ 5Nm scope ferrite magnet permanent magnetism with
In step motor, as the priority that can reduce copper loss, it is possible to determine in the following order: the internal-and external diameter of (1) stator 10A
It is Tt/St2≤0.73-20 (St1/St2-than the scope that St1/St2 is 0.53～0.69, (2) summation external diameter than Tt/St2
0.64)2Scope, (3) core across back degree Lcb be the scope of 0.8 × 2T p≤Lcb≤1.6 × 2T p, it is possible to be combined as
These conditions determine to employ the structure of the permasyn morot of ferrite magnet.
It follows that in the permasyn morot bigger than above-mentioned permasyn morot in torque capacity, it is possible to subtract
The scope of the little summation external diameter copper loss than Tt/St2 illustrates.Copper loss measured value shown in Fig. 5 is for employing torque capacity τ m
It is in the measurement result of the copper loss of the permasyn morot of the ferrite magnet of the scope of 10Nm≤τ m ＜ 25Nm.It addition, should
The scope that output Pout is 6kW≤Pout≤15kW of permasyn morot.
In Fig. 5, in the scope of above-mentioned torque capacity, the permasyn morot of operating is with the boss ratio of stator 10
St1/St2 be 0.53～0.69 and summation external diameter be 0.35+20 (St1/St2-0.64) than Tt/St22≤Tt/St2≤
1.2-20(St1/St2-0.64)2Scope be operated as center.
And, in Fig. 5 in the same manner as Fig. 4 the copper loss line such as expression.As shown in Figure 5, in boss ratio St1/ by stator 10A
St2 be 0.53～0.69 and summation external diameter be 0.35+20 (St1/St2-0.64) than Tt/St22≤Tt/St2≤1.2-20
(St1/St2-0.64)2In the part that the scope determined is surrounded, copper loss is reduced.Such as, 0.35+20 (St1/St2-
0.64)2≤Tt/St2≤1.2-20(St1/St2-0.64)2Scope can as inner side etc. copper loss line outside etc.
Value near copper loss line reads.
As it has been described above, employing the permanent magnetism of ferrite magnet that torque capacity τ m is in the scope of 10Nm≤τ m ＜ 25Nm
In synchronous motor, can be determined by following sequence as the priority that can reduce copper loss: the boss ratio of (1) stator 10
St1/St2 be 0.53～0.69 scope, (2) summation external diameter be 0.35+20 (St1/St2-0.64) than Tt/St22≤Tt/St2
≤1.2-20(St1/St2-0.64)2Scope, (3) core across back degree Lcb be the model of 0.8 × 2T p≤Lcb≤1.6 × 2T p
Enclose, as long as determining to employ the structure of the permasyn morot of ferrite magnet by these conditions appropriately combined.
Fig. 6 represents the variation of stator, and this stator 10B represents the example implementing distribution winding.Fig. 6 represents and constitutes forever
The winding wire of magnetic-synchro motor is distributed the longitudinal section of the stator of winding.It addition, omit the expression of winding wire in figure 6.
Stator 10B is constituted by with lower part: core main body 12B that is made up of magnetic, the winding wire formed in the inner circumferential side of core main body 12B
Storage multiple groove 14B, between each groove 14B formed tooth 16B, have core main body 12B outer circumferential side formed circular
Shape core the back of the body 18B.
It is being the end 16B-1 deforming T-shaped with core back of the body cross section, 18B opposition side that tooth 16B has, the end of this deformation T-shaped
All inner peripheral portion forming stator of portion 16B-1.Therefore, it is inserted into configuring rotor (not in the inner peripheral portion formed by end 16B-1
Diagram).The peripheral cross-section of core back of the body 18B becomes annulus.
Receiving the Distributed Winding line being wound around by distribution in groove 14B, each winding wire is overlapping in end.This Distributed Winding institute
The stator 10B constituted is known structure.And, it is distributed in the stator 10B of winding also described above at this, it is possible to the greatest extent may be used
Copper loss can be reduced.That is, as the priority that can reduce copper loss, it is possible to determined by following order: (1) stator 10 inside and outside
Footpath is Tt/St2≤0.73-20 (St1/St2-than the scope that St1/St2 is 0.53～0.69, (2) summation external diameter than Tt/St2
0.64)2, or summation external diameter be 0.35+20 (St1/St2-0.64) than Tt/St22≤Tt/St2≤1.2-20(St1/St2-
0.64)2Scope, (3) core across back degree Lcb be the scope of 0.8 × 2T p≤Lcb≤1.6 × 2T p.
In the above description, the stator 10A shown in Fig. 1 sets the number of groove 14A as 9 grooves, but substantially 3 grooves with
Upper, therefore it is not limited to this.Additionally, stator is in FIG for concentrating the stator 10A being wound around, but it is as shown in Figure 6
The stator 10B that distribution is wound around also has no relations.
Although additionally, not explanation in the present embodiment, but the embedded mode as the permanent magnet imbedded in the rotor has
Various modes, may be used without the embedded mode of U-shaped or V-shaped in the present embodiment.
The permasyn morot employing ferrite magnet discussed above can use, especially in more electrical equipment
Its torque capacity τ m is in the permasyn morot of the scope of 1Nm≤τ m ＜ 5Nm as in home-use conditioner
The power source of the compressor used is suitable for, and then torque capacity τ m is in the synchronous permanent-magnet motor of scope of 10Nm≤τ m ＜ 25Nm
Machine is suitable for as the power source of the compressor used in the conditioner of business.
And then, set permanent magnet in an embodiment as ferrite magnet, but the relict flux density if Magnet is 0.3T
～the Magnet between 0.5T then can stably obtain, being therefore not limited to ferrite magnet, also it doesn't matter for other permanent magnet.But
It is, due to past many uses ferrite magnet, therefore to there is known also easy to handle effect such as its characteristic, physical property etc..
Additionally, the material of stator in order to reduce vortex flow loss and also can be by the stacking silicon steel plate structure accumulated in axial direction
Become, it is possible to be made up of compressed-core etc..And then, it is possible to it is made up of noncrystalline metal etc..
As discussed above, according to the present invention, the relict flux density of the permanent magnet imbedded in the rotor is set
Be set to the scope of 0.3T～0.5T, and by external diameter (diameter) St2 of internal diameter (diameter) St1 of the stator of storage rotor and stator it
The scope of 0.53～0.69 it is set as than St1/St2.
As above, if the ratio St1/St2 of internal diameter (diameter) St1 of stator and external diameter (diameter) St2 of stator is set
Be set to 0.53～0.69, then the copper loss employing the permasyn morot in the case of ferrite magnet illustrates downwardly convex
Characteristic and there is the specific regions that copper loss is low.
Therefore, by the ratio St1/St2 of external diameter (diameter) St2 of the internal diameter of stator (diameter) St1 and stator is set as
The scope of 0.53～0.69, thus reduction have employed the permanent magnet of the scope that relict flux density is 0.3T～0.5T effectively
The copper loss of permasyn morot also seeks the high efficiency of permasyn morot.
The explanation of symbol
10A, 10B... stator, 12A, 12B... core main body, 14A, 14B... groove, 16A, 16B... tooth, 18A, 18B...
The core back of the body, the internal diameter of St1... stator, the external diameter of St2... stator, the width of T... tooth, Lcb... core across back degree.
Claims (9)
1. a permasyn morot, at least by possess the permanent magnet that configures in the way of constituting multipole at interior rotor and
The stator receiving above-mentioned rotor is constituted, and this permasyn morot is characterised by,
The relict flux density of above-mentioned permanent magnet is in the scope of 0.3T～0.5T, and the internal diameter St1 of said stator and above-mentioned
The ratio St1/St2 of the external diameter St2 of stator is in the scope of 0.53≤St1/St2≤0.69, and wherein, above-mentioned internal diameter and external diameter are
Diameter.
Permasyn morot the most according to claim 1, it is characterised in that
Ferrite magnet is used in above-mentioned permanent magnet.
Permasyn morot the most according to claim 1, it is characterised in that
Said stator is to concentrate the distribution concentrating winding stator or distribution to be wound around winding wire being wound around winding wire to be wound around in stator
Any one.
Permasyn morot the most according to claim 2, it is characterised in that
The ratio St1/St2 of the internal diameter St1 of said stator and the external diameter St2 of said stator is in 0.57≤St1/St2≤0.64
Scope, wherein, above-mentioned internal diameter and external diameter are diameter.
Permasyn morot the most according to claim 4, it is characterised in that
The torque capacity τ m of above-mentioned permasyn morot is in the scope of 1Nm≤τ m ＜ 5Nm, the width of the tooth of said stator
The ratio Tt/St2 of the length T i.e. Tt of the summation in circumferential direction and the external diameter St2 of said stator is in Tt/St2≤0.73-20
(St1/St2-0.64)2Scope, wherein, above-mentioned external diameter is diameter.
Permasyn morot the most according to claim 4, it is characterised in that
In the case of the torque capacity τ m of above-mentioned permasyn morot is in the scope of 10Nm≤τ m ＜ 25Nm, above-mentioned fixed
The ratio Tt/St2 of length T of the width of the tooth of son summation i.e. Tt and the external diameter St2 of said stator in circumferential direction is in
0.35+20(St1/St2-0.64)2≤Tt/St2≤1.2-20(St1/St2-0.64)2Scope, wherein, above-mentioned external diameter is straight
Footpath.
7. according to the permasyn morot described in claim 5 or 6, it is characterised in that
Length T of the width of above-mentioned tooth, every the most every pole groove number p and said stator external diameter St2 and said stator groove
The scope that relation is 0.8 × 2T p≤Lcb≤1.6 × 2T p of the core across back degree Lcb between periphery, wherein, above-mentioned external diameter
For diameter.
8. according to the permasyn morot described in claim 5 or 6, it is characterised in that
The compressor being arranged at conditioner is driven by above-mentioned permasyn morot.
Permasyn morot the most according to claim 2, it is characterised in that
The embedded mode of the above-mentioned permanent magnet imbedding above-mentioned rotor is U-shaped or V-shaped.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012233408A JP2014087143A (en) | 2012-10-23 | 2012-10-23 | Permanent magnet synchronous motor |
| JP2012-233408 | 2012-10-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103795164A CN103795164A (en) | 2014-05-14 |
| CN103795164B true CN103795164B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310494901.6A Active CN103795164B (en) | 2012-10-23 | 2013-10-21 | Permasyn morot |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014087143A (en) |
| CN (1) | CN103795164B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896862A (en) * | 2016-04-12 | 2016-08-24 | 精进电动科技（北京）有限公司 | Permanent magnet motor |
| CN107046353B (en) * | 2017-02-22 | 2023-06-30 | 广东美芝制冷设备有限公司 | Motor and compressor with same |
| JP2019030166A (en) | 2017-08-02 | 2019-02-21 | ミネベアミツミ株式会社 | motor |
| WO2021079508A1 (en) * | 2019-10-25 | 2021-04-29 | 三菱電機株式会社 | Electric motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013621A (en) * | 2005-12-22 | 2007-08-08 | 株式会社日立制作所 | Low loss magnet and magnetic circuit using the same |
| CN101013827A (en) * | 2005-12-22 | 2007-08-08 | 株式会社日立制作所 | Integral magnetic material motor |
| CN101488694A (en) * | 2008-01-18 | 2009-07-22 | 三菱电机株式会社 | Permanentmagnet-synchronmotor |
| CN101946386A (en) * | 2008-02-21 | 2011-01-12 | 株式会社东芝 | The assemble method of permanent magnet rotary electric machine, permanent magnet rotary electric machine, the decomposition method of permanent magnet rotary electric machine and permanent magnet motor drive system |
| CN202444343U (en) * | 2012-03-05 | 2012-09-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronous reluctance motor and rotor thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1075542A (en) * | 1996-08-29 | 1998-03-17 | Aichi Emerson Electric Co Ltd | Motor for driving compressor |
| JP2003224941A (en) * | 2002-01-29 | 2003-08-08 | Asmo Co Ltd | Stator for dynamo-electric machine |
| JP2006149158A (en) * | 2004-11-24 | 2006-06-08 | Hitachi Industrial Equipment Systems Co Ltd | Permanent magnet type rotary electric machine and compressor using the same |
| JP2010045872A (en) * | 2008-08-08 | 2010-02-25 | Fuji Electric Systems Co Ltd | Permanent magnet rotary machine |
| CN102823118A (en) * | 2010-03-25 | 2012-12-12 | 松下电器产业株式会社 | Motor and electrical apparatus housing same |
-
2012
- 2012-10-23 JP JP2012233408A patent/JP2014087143A/en active Pending
-
2013
- 2013-10-21 CN CN201310494901.6A patent/CN103795164B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013621A (en) * | 2005-12-22 | 2007-08-08 | 株式会社日立制作所 | Low loss magnet and magnetic circuit using the same |
| CN101013827A (en) * | 2005-12-22 | 2007-08-08 | 株式会社日立制作所 | Integral magnetic material motor |
| CN101488694A (en) * | 2008-01-18 | 2009-07-22 | 三菱电机株式会社 | Permanentmagnet-synchronmotor |
| CN101946386A (en) * | 2008-02-21 | 2011-01-12 | 株式会社东芝 | The assemble method of permanent magnet rotary electric machine, permanent magnet rotary electric machine, the decomposition method of permanent magnet rotary electric machine and permanent magnet motor drive system |
| CN202444343U (en) * | 2012-03-05 | 2012-09-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronous reluctance motor and rotor thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014087143A (en) | 2014-05-12 |
| CN103795164A (en) | 2014-05-14 |
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