CN104508958A - Rotating electrical machine and wind generator system - Google Patents
Rotating electrical machine and wind generator system Download PDFInfo
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- CN104508958A CN104508958A CN201280074959.9A CN201280074959A CN104508958A CN 104508958 A CN104508958 A CN 104508958A CN 201280074959 A CN201280074959 A CN 201280074959A CN 104508958 A CN104508958 A CN 104508958A
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- rotating machine
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
- H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
This rotating electrical machine (1) has windings (15) wound with concentrated windings around the teeth (14) of a stator (11). The rotating electrical machine is configured such that the number of slots per-pole per-phase (q), which is a value calculated by dividing the number (Ns) of slots (13) by the number of magnetic poles (P) and the number of phases of voltage (m), is a fraction that satisfies 1/4 < q < 1/2, while the winding portion of one winding is arranged in one slot.
Description
Technical field
The present invention relates to electric rotating machine and wind generator system, particularly possess electric rotating machine and the wind generator system of the winding being wound in stator.
Background technology
In the past, the known electric rotating machine possessing the winding being wound in stator.Such as in Japanese Patent No. 4725684 publication, disclose such electric rotating machine.
In the generator (electric rotating machine) disclosed in above-mentioned Japanese Patent No. 4725684 publications, in the mode making MgO-ZrO_2 brick q meet 1 < q≤3/2, by winding distribution winding (mode being distributed in multiple groove with the coil of every extremely every phase reels), in the groove of stator, described MgO-ZrO_2 brick q is the value that the quantity of groove obtains divided by the quantity of magnetic pole and the number of phases of number of poles and voltage.And, be configured to 2 windings (winding part of winding) being configured with homophase or out-phase at 1 groove.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent No. 4725684 publication
Summary of the invention
Invent problem to be solved.
But, the electric rotating machine as above-mentioned Japanese Patent No. 4725684 publication, be configured with in the electric rotating machine of 2 windings (winding part of winding) at 1 groove, insulate between the inside of groove needs 2 windings, on the other hand, interval between 2 windings of inside being configured at groove is smaller (put on the voltage compare of winding high when), there is the situation being difficult to fully insulate to 2 windings.In this case, in the past, need to configure insulating element between every 2 windings, therefore need to configure multiple insulating element, correspondingly, number of components and assembling procedure increase.Therefore, in the past, being desirably in when not configuring insulating element makes the insulating properties between winding improve.
The present invention completes to solve problem as above, and 1 object of the present invention is to provide the electric rotating machine and wind generator system that the insulating properties between winding can be made when not configuring insulating element to improve.
For solving the means of problem
In order to reach above-mentioned purpose, the electric rotating machine of the 1st aspect possesses: stator, and described stator has groove and is arranged at the tooth between groove; And winding, described winding is wound in the tooth of stator by concentrating winding, described electric rotating machine is configured to, MgO-ZrO_2 brick q is the mark of satisfied 1/4 < q < 1/2, described MgO-ZrO_2 brick q is the value that the quantity Ns of groove obtains divided by the quantity of magnetic pole and the number of phases m of number of poles P and voltage, further, the winding part of 1 winding is configured with at 1 groove.
In electric rotating machine in the 1st, as mentioned above, by being configured to the winding part configuring 1 winding at 1 groove, thus be configured with tooth between adjacent 2 windings, therefore, it is possible to increase the interval between winding.Thereby, it is possible to make the insulating properties between winding improve when not configuring insulating element.Its result is, do not need to configure insulating element, correspondingly also can the increase of suppression component quantity and assembling procedure.Further, by being configured to the winding part configuring 1 winding at 1 groove, with configure the situation of 2 windings (winding part of winding) at 1 groove compared with, the quantity of winding can be reduced to half, therefore, it is possible to reduce the number of components of electric rotating machine.Thereby, it is possible to make the manufacturing engineering of electric rotating machine simplify.
The blade that the wind generator system of the 2nd aspect possesses generator and is connected with the rotating shaft of generator, described generator comprises: stator, and described stator has groove and is arranged at the tooth between groove; And winding, described winding is wound in the tooth of stator by concentrating winding, described power facility becomes, MgO-ZrO_2 brick q is the mark of satisfied 1/4 < q < 1/2, described MgO-ZrO_2 brick q is the value that the quantity Ns of groove obtains divided by the quantity of magnetic pole and the number of phases m of number of poles P and voltage, further, the winding part of 1 winding is configured with at 1 groove.
In wind generator system in the 2nd, as mentioned above, by being configured to the winding part configuring 1 winding at 1 groove, thus be configured with tooth between adjacent 2 windings, therefore, it is possible to increase the interval between winding.Thereby, it is possible to provide the wind generator system that the insulating properties between winding can be made when not configuring insulating element to improve.Its result is, can provide do not need to configure insulating element, correspondingly also can the wind generator system of increase of suppression component quantity and assembling procedure.Further, by being configured to the winding part configuring 1 winding at 1 groove, with configure the situation of 2 windings (winding part of winding) at 1 groove compared with, the quantity of winding can be reduced to half, therefore, it is possible to reduce the number of components of generator.Thereby, it is possible to make the manufacturing engineering of generator (wind generator system) simplify.
Invention effect
According to above-mentioned rotation electrode and wind generator system, the insulating properties between winding can be made to improve when not configuring insulating element.
Accompanying drawing explanation
Fig. 1 is the integrally-built figure of the wind generator system that an execution mode is shown.
Fig. 2 is the plane graph of the generator of the wind generator system of an execution mode.
Fig. 3 is the amplification view of the generator of the wind generator system of an execution mode.
Fig. 4 is the figure of the configuration of the winding of the generator of wind generator system for illustration of comparative example.
Fig. 5 is the figure of the configuration of the winding of the generator of wind generator system for illustration of an execution mode.
Fig. 6 is the figure of the position of the winding of each phase of the wind generator system that an execution mode is shown and the relation of electric phase place.
Fig. 7 is the integrally-built figure of the wind generator system that variation is shown.
Embodiment
Below, based on accompanying drawing, execution mode is described.
First, referring to figs. 1 through Fig. 6, the structure of the wind generator system 100 of present embodiment is described.In addition, below, the molecule (denominator) being meant to the fraction in lowest term of MgO-ZrO_2 brick q of the molecule (denominator) of MgO-ZrO_2 brick q.
As shown in Figure 1, wind generator system 100 is by generator 1, form for receiving the cabin 2 of generator 1, rotor hub 3, blade 4 and tower (support column) 5.Generator 1 is accommodated in cabin 2.Further, rotor hub 3 is installed on the rotating shaft 6 of generator 1.Further, rotor hub 3 is provided with multiple blade 4.Further, cabin 2 is installed in tower 5.In addition, generator 1 is an example of " electric rotating machine ".
As shown in Figure 2, generator 1 possesses stator 11 and rotor 12.Here, in the present embodiment, generator 1 is that the mode of the periphery surrounding stator 11 is to configure the external rotor form of rotor 12.
Further, as shown in Figures 2 and 3, stator 11 is provided with multiple groove 13.Be configured in the present embodiment, the quantity Ns of groove is the value that the number of phases m of the voltage that induction produces is multiplied by 4n (n is the natural number of more than 1) and obtains.Specifically, the number of phases m that the voltage produced responded to by generator 1 is 3 phases (U phase, V phase, W phases), and the quantity Ns of groove is 96 (=3 × 4 × 8).96 grooves 13 are to be arranged at stator 11 towards the mode of periphery side opening.In addition, in figure 3, the groove 13 that groove is numbered #1 ~ #24 is shown.Further, between adjacent groove 13, tooth 14 is provided with.
Further, winding 15 is wound with at groove 13.Be configured in the present embodiment, winding 15 is concentrated winding winding 15 being wound in the tooth 14 between adjacent groove 13.
Further, rotor 12 is provided with multiple permanent magnet 16.Be configured in the present embodiment, the quantity Ns (=96) of groove meets Ns-P=± 4n (n is integer) with the difference (Ns-P) of the quantity of magnetic pole and number of poles P.Specifically, permanent magnet 16 is provided with 100.That is, number of poles P is 100, and the quantity Ns of groove and the difference (Ns-P) of number of poles P are-4 (=96-100).Like this, the generator 1 of present embodiment to be number of poles P be more than 20 the generator of middle low speed (such as, revolutions per minute be more than 10 and less than 400).
Here, in the present embodiment, generator 1 is configured to the mark that MgO-ZrO_2 brick q is satisfied 1/4 < q < 1/2, and described MgO-ZrO_2 brick q is the value that the quantity Ns of groove obtains divided by the quantity of magnetic pole and the number of phases m of number of poles P and voltage.Specifically, generator 1 is configured to, and MgO-ZrO_2 brick q is 8/25 (=Ns/ (m × P)=96/ (3 × 100)).Further, generator 1 is configured to, and is more than 4 (such as, 4,6,8,10 or 12) by the value that number of poles P obtains divided by the denominator of the fraction in lowest term of MgO-ZrO_2 brick q.Specifically, generator 1 is configured to, and is 4 (=100/25) by the value that number of poles P (=100) obtains divided by the denominator (=25) of the fraction in lowest term of MgO-ZrO_2 brick q.
And, in the present embodiment, as shown in Figure 2, the group of the winding 15 of the winding 15 respectively containing multiple homophase (U phase, V phase or W phase) is configured to, the quantity (be in the present embodiment 4) equal with the value obtained divided by the denominator of the fraction in lowest term of MgO-ZrO_2 brick q with number of poles P, the group of winding 15 is configured at stator 11 with separated state respectively.Specifically, the group of the winding 15 of the winding 15 respectively containing 8 homophases (U phase, V phase or W phase) is configured to 4 (groups 1,2,3 and 4), and the group of 4 windings is configured at stator 11 with separated state.
As shown in Figure 2, in the present embodiment, the group of 4 windings 15 is configured at stator 11 with the angularly interval of roughly 90 degree in the circumferential.Further, the group of the group of the winding 15 of U phase, the group of the winding 15 of W phase and the winding 15 of V phase is configured at stator 11 with the state adjacent according to this order.In addition, U phase is an example of " the 1st group ", and W phase is an example of " the 2nd phase ".Further, V phase is an example of " the 3rd phase ".Specifically, the winding 15 of U phase is wound in the groove 13 that groove is numbered #2 ~ #9 (group 1), #26 ~ #33 (group 2), #50 ~ #57 (group 3) and #74 ~ #81 (group 4).Further, the winding 15 of V phase is wound in the groove 13 that groove is numbered #18 ~ #25, #42 ~ #49, #66 ~ #73 and #90 ~ #1.Further, the winding 15 of W phase is wound in the groove 13 that groove is numbered #10 ~ #17, #34 ~ #41, #58 ~ #65 and #82 ~ #89.
Next, with reference to Fig. 4 and Fig. 5, for the configuration of the winding 15 (with reference to Fig. 5) of each phase (U phase, V phase, W phase) of present embodiment, compare with the configuration of the winding 201 of the stator 200 of comparative example (with reference to Fig. 4) and be specifically described on one side.
As shown in Figure 4, in the stator 200 of comparative example, be configured to be configured with 2 windings 201 at 1 groove 202.Thus, winding 201 is wound in all teeth 203.Such as, the tooth 203a between the groove 202 being numbered #1 and #2 at groove is wound with winding 201, and the tooth 203b between the groove 202 being numbered #2 and #3 at groove is also wound with winding 201.Thus, the groove 202 being numbered #2 at groove is configured with 2 windings 201.Like this, in the stator 200 of comparative example, owing to being configured with 2 windings 201 at 1 groove 202, so need to configure insulating element (not shown) between 2 windings 201, insulate between 2 windings 201.Further, insulating element needs to be configured at all grooves 202.
On the other hand, in the present embodiment, as shown in Figure 5, winding 15 is wound in the side in adjacent tooth 14, and reels the opposing party, is configured to thus be configured with 1 winding 15 (winding part of winding 15) at 1 groove 13.In addition, the winding part of so-called winding 15, is meant to the part of the linearity of the winding 15 of the inside being configured at groove 13.Specifically, the side in adjacent 2 grooves 13 is configured with the winding of the half of winding 15, and is configured with the winding of residue half the opposing party.Thus, the tooth 14 (14a) being configured to be wound with winding 15 and the tooth 14 (14b) not being wound with winding 15 are alternately configured at stator 11.Specifically, #2 and #3 (#4 and #5, #6 and #7, #8 and #9 is numbered at groove ...) groove 13 between tooth 14a be wound with winding 15.On the other hand, #1 and #2 (#3 and #4, #5 and #6, #7 and #8 is numbered at groove ...) groove 13 between tooth 14b be not wound with winding 15.Its result is, is only configured with the winding 15 (winding part (half) of the winding 15 of U phase) of 1 U phase at 1 groove 13 (such as groove is numbered #2).And, the groove 13 being numbered #9 at the groove on the border as U phase and W phase is only configured with the winding 15 (winding part (half) of the winding 15 of U phase) of U phase, and be only configured with the winding 15 (winding part (half) of the winding 15 of W phase) of W phase at the groove 13 that groove is numbered #10, between two windings, be configured with tooth 14 (14b).Thus, different from the stator 200 of above-mentioned comparative example, the insulating element to insulating between winding 15 need not be set in groove 13.In addition, owing to being configured with 1 winding 15 at 1 groove 13, so the quantity of the winding 15 of present embodiment is the half being configured with the quantity of the winding 201 of the comparative example of 2 windings 201 at 1 groove 202.Thus, such as, when configuring 1 cooling water pipe to cool winding (stator) to 1 winding, in the present embodiment, the quantity that can make cooling water pipe compared with comparative example is half, therefore, it is possible to make the designs simplification of generator 1.
And, 1 winding 15 (winding part (half) of winding 15) is configured at 1 groove 13, the number of turn of 1 winding 15 of present embodiment is 2 times (2w, with reference to Fig. 6) configuring the number of turn (w) of 1 winding 201 in the comparative example of 2 windings 201 at 1 groove 202.Further, although not shown, in the stator 200 of above-mentioned comparative example and the stator 11 of present embodiment, for the insulating element of insulation (insulation against ground) between winding 15 and stator core 11a (with reference to Fig. 5) is configured in groove.
Next, with reference to Fig. 6, the position (groove numbering) of the winding 15 of each phase (U phase, V phase, W phase) and the relation electrically between phase place are described.
First, present embodiment generator 1 electric on slot-pitch angle be 187.5 degree of (=(π × P)/Ns)=(180 × 100)/96).In addition, slot-pitch angle is mechanically 3.75 degree (=2 π/Ns=360/96), and pole span is 3.6 degree (=360/100).And, be wound in groove and be numbered the winding 15 of the U phase of #3 and be wound in the electric phase 187.5 degree that groove is numbered the winding 15 of the U phase of #4.Similarly, be wound in groove be numbered the winding 15 of the U phase of #5 and be wound in the electric phase 187.5 degree that groove is numbered the winding 15 of the U phase of #6.Its result is, groove is numbered the winding 15 of the U phase of #3, #5, #7, #9, #26, #28, #30, #32, #51, #53, #55, #57, #74, #76, #78 and #80 towards N pole field.In addition, being wound in groove, to be numbered the electric phase place of the winding 15 of #3 with #51 identical.Similarly, being wound in groove, to be numbered the electric phase place of the winding 15 of #26 with #74 (#28 with #76, #5 with #53, #30 with #78, #7 with #55, #32 with #80, #9 with #57) identical.That is, the number of the groove vector towards N pole field (slot vector) of U phase is 8 (the thick arrows with reference to Fig. 6).That is, the number of groove vector is corresponding with the molecule 8 of MgO-ZrO_2 brick q (8/25).
Further, groove is numbered the winding 15 of the U phase of #2, #4, #6, #8, #27, #29, #31, #33, #50, #52, #54, #56, #75, #77, #79 and #81 towards S pole field.In addition, being wound in groove, to be numbered the electric phase place of the winding 15 of #2 with #50 identical.Similarly, being wound in groove, to be numbered the electric phase place of the winding 15 of #27 with #75 (#4 with #52, #29 with #77, #6 with #54, #31 with #79, #8 with #56, #33 with #81) identical.
The winding 15 of U phase comprises the winding 15 towards N pole field and these 2 groups of the winding 15 towards S pole field as described above.And 2 grooves (such as groove is numbered #3 and #51) for 1 groove vector assignment, as shown in Figure 2, the group of 4 (=2 groups × 2) windings 15 is configured at stator 11 with the angularly interval of roughly 90 degree in the circumferential.
Further, as shown in Figure 6, magnetomotive central axis (flowing through the winding of U phase and the central axis of the magnetic flux produced by electric current) of the winding of U phase is numbered the electrical angle of the groove 13 of #5 and groove is numbered between the electrical angle of groove 13 of #30 at groove.In addition, when slot-pitch angle (electrical angle) is for λ s, represented from magnetomotive central axis to the electrical angle of each groove 13 by (λ s/2)+n × λ s (n is the phase multiples of the slot-pitch angle from magnetomotive centre axis).
Further, in the winding 15 of V phase, groove is numbered the winding 15 of #19, #21, #23, #25, #42, #44, #46, #48, #67, #69, #71, #73, #90, #92, #94 and #96 towards N pole field.Further, in the winding 15 of V phase, groove is numbered the winding 15 of #18, #20, #22, #24, #43, #45, #47, #1, #66, #68, #70, #72, #91, #93, #95 and #49 towards S pole field.
Further, in the winding 15 of W phase, groove is numbered the winding 15 of #11, #13, #15, #17, #34, #36, #38, #40, #59, #61, #63, #65, #82, #84, #86 and #88 towards N pole field.Further, in the winding 15 of W phase, groove is numbered the winding 15 of #10, #12, #14, #16, #35, #37, #39, #41, #58, #60, #62, #64, #83, #85, #87 and #89 towards S pole field.Further, as shown in Figure 2, the winding 15 of V phase and W phase is also same, and the group of 4 windings 15 is configured at stator 11 with the angularly interval of roughly 90 degree in the circumferential.
Next, the scope of the molecule of the MgO-ZrO_2 brick q found after studying with keen determination especially present inventor is described in detail.
The molecule of MgO-ZrO_2 brick q be the situation of 3 (such as, the quantity Ns of groove is 54, number of poles P is 48, MgO-ZrO_2 brick q is 3/8=54/ (3 × 48)) under, the cycle of teeth groove is calculated by the molecule of fraction in lowest term (=48/54=8/9) of value that obtains divided by the quantity Ns of groove with number of poles P and the product (=8 × 9) of denominator.That is, known when MgO-ZrO_2 brick q is 3, the cycle of teeth groove was 72 cycles.On the other hand, the known molecule at MgO-ZrO_2 brick q be the situation of 4 (such as, the quantity Ns of groove is 48, number of poles P is 44, MgO-ZrO_2 brick q is 4/11=48/ (3 × 44)) under, the fraction in lowest term of the value that number of poles P obtains divided by the quantity Ns of groove is 11/12 (=44/48), and the cycle of teeth groove is 132 cycles (=11 × 12).In addition, teeth groove is the main cause producing velocity perturbation (pulsation of speed), the relation that cycle of velocity perturbation and teeth groove is inversely proportional.Namely, the molecule of MgO-ZrO_2 brick q is compared with the situation of 4 is the situation of 3 with the molecule of MgO-ZrO_2 brick q, cycle of fluctuation be about 2 times (132 cycle/72 cycles), therefore known: compared with the situation that velocity perturbation when MgO-ZrO_2 brick q is 4 and MgO-ZrO_2 brick q are 3, to alleviate only about half of.
Above-mentioned research as a result, present inventor finds preferably to make the molecular proportion 3 of MgO-ZrO_2 brick q large (being more than 4).Based on this discovery, in the present embodiment, the molecule of MgO-ZrO_2 brick q is made to be 8 (> 3).
Next, scope present inventor being studied with keen determination to the group number of rear discovery is described.
Such as known, be in the generator of concentrated winding of 2 at group number, when flowing through electric current in the windings, electromagnetic force is along play a role for rightabout 2 directions each other (for rotor, electromagnetic force is in 2 application points).Therefore known, the rotor deformation ovalisation of generator, therefore generator rotates along with rotor and vibrates.In addition we know, even if when group number is 1, because electromagnetic force acts on rotor along 1 direction, so rotor deforms, generator vibrates along with the rotation of rotor.
And known, when group number is 3, when flowing through electric current in the windings, electromagnetic force plays a role (for rotor, electromagnetic force is in 3 application points) along all directions in 3 directions.And when the size of the electromagnetic force played a role along 3 directions produces difference, power unequally can act on rotor, thus rotor deforms.Therefore known, when group number is 3, generator vibrates along with the rotation of rotor.
On the other hand, as shown in Figure 2, in the generator 1 of present embodiment, group number is 4, therefore known, when generator 1 rotates, such as, when flowing through electric current in the winding of U phase, electromagnetic force plays a role along 4 directions as indicated by the arrows of fig. 2 (for rotor 12, electromagnetic force is in 4 application points).It can thus be appreciated that electromagnetic force easily acts on rotor 12 equably, the rotor 12 of generator 1 can be suppressed to deform.Consequently, the known vibration that the distortion of rotor 12 can be suppressed to cause.Further, confirm: when group number is 6,8,10 and 12, also can in the same manner as the situation of above-mentioned group of number 4, suppress the rotor of generator to deform, therefore, it is possible to suppress the vibration that the distortion of rotor causes.Consequently, knownly inhibit the situation being applied with abnormal power at the bearing portion of generator, therefore, it is possible to extend the life-span of generator.
And known, when organizing number and being larger than 12, the molecule of MgO-ZrO_2 brick q diminishes (becoming 1 or 2), and the distributed effect of winding diminishes.That is, the waveform of the known voltage from generator output departs from sine wave significantly.Above-mentioned research as a result, present inventor finds preferably to make group number be 4,6,8,10 and 12.Based on this discovery, in the present embodiment, group number is made to be 4.
And, as mentioned above, be 4,6,8,10 and 12 by making group number, can by the group of multiple winding (such as, group 1 ~ 4) be all connected in series (group 1 ~ 4 being connected in series), be all connected in parallel (group 1 ~ 4 being connected in parallel) or (group 1 and 2 be connected in series being connected in series between the group after being connected in parallel, group 3 and 4 is connected in series, and they is connected in parallel) etc., improve the degree of freedom of the design of winding.
Next, the winding coefficient of the generator 1 of present embodiment is described.The winding coefficient of the first-harmonic (Fundamental) of the generator 1 of known present embodiment is 0.956.On the other hand, be configured with in the structure of 2 windings 201 at 1 groove 202 of the comparative example shown in Fig. 4, known winding coefficient is 0.954.Its result is, the winding coefficient confirming the generator 1 of present embodiment is larger than comparative example.In addition, so-called winding coefficient be relative to the output valve when configuration of the winding using obtaining maximum output or structure as 1 when the value (export than) of output, more better close to 1.
In the present embodiment, as mentioned above, by being configured to the winding part (half) configuring 1 winding 15 at 1 groove 13, thus tooth 14 is configured with between adjacent 2 windings 15, therefore, it is possible to increase the interval between winding 15.Thereby, it is possible to improve the insulating properties between winding 15 when not configuring insulating element.Its result is, does not need to configure insulating element, correspondingly also can the increase of suppression component quantity and assembling procedure.Further, by being configured to the winding part (half) configuring 1 winding 15 at 1 groove 13, and configuring at 1 groove 13 compared with the situation of 2 windings 15, the quantity of winding 15 can be reduced to half, therefore, it is possible to reduce the number of components of generator 1.Thereby, it is possible to make the manufacturing process of generator 1 simplify.
Further, in the present embodiment, as mentioned above, winding 15 is wound in the side in adjacent tooth 14, and does not reel the opposing party, be configured to the winding part (half) configuring 1 winding 15 at 1 groove 13 thus.Thereby, it is possible to be easily configured to configure 1 winding 15 at 1 groove 13.
Further, in the present embodiment, as mentioned above, the tooth 14 (14a) being configured to be wound with winding 15 and the tooth 14 (14b) not being wound with winding 15 are alternately configured at stator 11.Thus, stator 11 is configured to configure 1 winding 15 at 1 groove 13 on the whole, therefore at stator 11 on the whole, can improve the insulating properties between winding 15 when not configuring insulating element.
Further, in the present embodiment, be configured to as described above, make the molecule of the fraction in lowest term of MgO-ZrO_2 brick q be the even number larger than 3.Thus, be that the situation of odd number is different from the molecule of the fraction in lowest term of MgO-ZrO_2 brick q, can stator 11 on the whole alternately configure volumes be wound with the tooth 14 (14a) of winding 15 and be not wound with the tooth 14 (14b) (not configuring 2 windings 15 at 1 groove 13) of winding 15.
Further, in the present embodiment, be configured to as described above, the quantity Ns of groove 13 is the value that number of phases m is multiplied by 4n (n is the natural number of more than 1) and obtains.Thus, the quantity Ns of groove 13 is the multiple of 4, is therefore easily divided into 4 parts equably, consequently, the winding 15 of 4 groups can be configured at groove 13 with the angularly interval of roughly 90 degree.
Further, in the present embodiment, be configured to as described above, make the difference of the quantity Ns of groove 13 and number of poles P (Ns-P) meet Ns-P=± 4n (n is integer).Thus, when the quantity Ns of groove 13 be number of phases m be multiplied by 4n and obtain value (i.e. the multiple of 4), number of poles P also becomes the multiple of 4, therefore, it is possible to correspond to the magnetic pole of equal amount respectively with the winding 15 of 4 groups.
Further, in the present embodiment, as mentioned above, generator 20 is applied to number of poles P and is more than 20 and revolution per minute is more than 10 and the generator 1 of low speed in less than 400.Thus, be wound with in the generator 1 of low speed in winding 15 concentrating, can the increase of suppression component quantity and assembling procedure.
And, in the present embodiment, as mentioned above, be more than 4 by the value that number of poles P obtains divided by the denominator of the fraction in lowest term of MgO-ZrO_2 brick q, and the group of the winding 15 respectively containing multiple same phase winding 15 is configured to the quantity equal with the value obtained divided by the denominator of the fraction in lowest term of MgO-ZrO_2 brick q with number of poles P, the group of winding 15 is configured at stator 11 with separated state respectively.Thus, electromagnetic force acts on rotor 12 along directions more than 4 directions, therefore different from the situation that electromagnetic force acts on rotor 12 along 2 directions in direction opposite each other, and rotor 12 can be suppressed to be deformed into elliptical shape.Further, compared with being the situation of 3 with the group number of winding 15, power easily acts on rotor 12 equably, therefore, it is possible to suppress the distortion of rotor 12 further.They as a result, by the group number of winding 15 is set as more than 4, the vibration that the distortion of rotor 12 causes can be suppressed, therefore, it is possible to make concentrate be wound with the generator 1 of winding 15 characteristic improve.
Further, in the present embodiment, as mentioned above, make the quantity of the group of winding 15 be 4, and the group of 4 windings 15 is configured at stator 11 with the state at the angularly intervals separating roughly 90 degree in the circumferential.Thus, electromagnetic force acts on rotor 12 with the angularly interval of roughly 90 degree along all directions in 4 directions in the circumferential, therefore, it is possible to suppress rotor 12 to be deformed into elliptical shape.
And, in the present embodiment, as mentioned above, the number of phases m of the voltage that induction is produced is 3 phases comprising U phase, W phase and V phase, and the group of the group of the winding 15 of U phase, the group of the winding 15 of W phase and the winding 15 of V phase is configured at stator 11 with the state adjacent according to this order.Thereby, it is possible to the group of the winding 15 of U phase, W phase and V phase is configured with the circumference of the angularly interval of roughly 90 degree along rotor 12 respectively.
Further, in the present embodiment, be configured to as described above, MgO-ZrO_2 brick q is 8/25.Thus, smaller with the molecule of MgO-ZrO_2 brick q situation (such as, 1 or 2) is compared and can be reduced high frequency component.Consequently, can make to generate electricity the waveform of the voltage produced close to sinusoidal wave, therefore, it is possible to effectively realize the high efficiency of generator 1 by generator 1.
Further, in the present embodiment, as mentioned above, the number of phases m of the voltage that induction is produced is 3 phases, and the quantity Ns making groove 13 is 96, makes number of poles P be 100.Thereby, it is possible to make MgO-ZrO_2 brick q be 8/25=(96/ (3 × 100)).
Further, in the present embodiment, as mentioned above, the external rotor form by configuring rotor 12 in the mode of the periphery surrounding stator 11 is formed generator 1.Here, in the generator 1 of rotor configurations outside, rotor 12 is easily out of shape, and therefore in this case, by the group of 4 windings 15 is configured at stator 11 with the angularly interval of roughly 90 degree in the circumferential, can effectively suppress rotor 12 to be deformed into elliptical shape.
In addition, should think that this time disclosed execution mode is all illustrate in all, instead of restrict.Scope of the present invention be can't help the explanation of above-mentioned execution mode and is represented, but is represented by claims, and comprises all changes in the meaning and scope that are equal to claims.
Such as, in the above-described embodiment, show the example being configured to configure at 1 groove the winding part (half) of 1 winding in all grooves, but such as also in a part of groove in all grooves, the winding part of 2 windings can be configured at 1 groove.
Further, in the above-described embodiment, showing the group number being configured to winding is the example of 4, but the group number that such as also can be configured to winding is 6,8,10 or 12.In addition, when the group number of winding is 6,8,10 or 12, the group of winding is also configured at stator with roughly angularly interval in the circumferential.
In addition, in the above-described embodiment, showing and be configured to the example that MgO-ZrO_2 brick q is 8/25, but such as also can be configured to: being 96 by making the quantity Ns of groove, make number of poles P be 92, and make MgO-ZrO_2 brick q be 8/23 (=96/ (3 × 92)).In addition, organizing number is 4 (=92/23).Further, also can being configured to: by making the quantity Ns of groove be 84, making number of poles P be 100, and making MgO-ZrO_2 brick q be 7/25 (=84/ (3 × 100)).In addition, organizing number is 4 (=100/25).
In addition, in the above-described embodiment, show the example using the generator configuring the external rotor form of rotor in the mode of the periphery surrounding stator, but such as also can be used in the generator of the internal rotor form of the inner side configuration rotor of stator.
In addition, in the above-described embodiment, show MgO-ZrO_2 brick q be satisfied 1/4 < q < 1/2 mark and the structure that the group number of winding is 4 is applied to the example of generator, but such as also can be by MgO-ZrO_2 brick q the mark of satisfied 1/4 < q < 1/2 and the structure that the group number of winding is 4 is applied to motor.
In addition, in the above-described embodiment, show MgO-ZrO_2 brick q be the mark of satisfied 1/4 < q < 1/2 and the group number of winding be the generator application of 4 in the example of wind generator system, but such as also can by the system of this generator application beyond wind generator system.
In addition, in the above-described embodiment, the number of phases showing voltage is the example of 3, but such as, the number of phases of voltage also can be (such as single-phase) beyond 3.In this case, the value Ns/P that the quantity Ns being configured to groove obtains divided by the quantity of magnetic pole and number of poles P meets 2/3 < Ns/P < 3/2.Thus, due to the quantity Ns of groove and the difference of number of poles P smaller, therefore, it is possible to suppress winding coefficient diminish.
In addition, in the above-described embodiment, show the example that rotor hub is installed on the rotating shaft of generator, but the present invention is not limited thereto.Such as, also can the wind generator system 101 of variation as shown in Figure 7 such, gear 7 is set between rotor hub 3 and generator 1.
Label declaration
1: generator (electric rotating machine);
4: blade;
6: rotating shaft;
11: stator;
12: rotor;
13: groove;
14: tooth;
15: winding;
100,101: wind generator system.
Claims (20)
1. an electric rotating machine (1), it possesses:
Stator (11), described stator has groove (13) and is arranged at the tooth (14) between described groove; And
Winding (15), described winding is wound in the described tooth of described stator by concentrating winding,
Described electric rotating machine is configured to,
MgO-ZrO_2 brick q is the mark of satisfied 1/4 < q < 1/2, and described MgO-ZrO_2 brick q is the value that the quantity Ns of described groove obtains divided by the quantity of magnetic pole and the number of phases m of number of poles P and voltage, and,
The winding part of 1 described winding is configured with at 1 described groove.
2. electric rotating machine according to claim 1, wherein,
Described winding is wound in the side in adjacent described tooth, and is not wound in the opposing party, thus is configured to the winding part being configured with 1 described winding at 1 described groove.
3. electric rotating machine according to claim 2, wherein,
Described electric rotating machine is configured to, and the described tooth being wound with described winding and the described tooth not being wound with described winding are alternately configured at described stator.
4. electric rotating machine according to claim 1, wherein,
Described electric rotating machine is configured to, and the molecule of the fraction in lowest term of described MgO-ZrO_2 brick q is the even number larger than 3.
5. electric rotating machine according to claim 1, wherein,
Described electric rotating machine is configured to, and the quantity Ns of described groove is the value that number of phases m is multiplied by 4n (n is the natural number of more than 1) and obtains.
6. electric rotating machine according to claim 1, wherein,
Described electric rotating machine is configured to, and the quantity Ns of described groove and the difference (Ns-P) of described number of poles P meet Ns-P=± 4n (n is integer).
7. electric rotating machine according to claim 1, wherein,
Described electric rotating machine is applied to described number of poles P and is more than 20 and revolution per minute is more than 10 and the electric rotating machine of the middle low speed of less than 400.
8. electric rotating machine according to claim 1, wherein,
The value that described number of poles P obtains divided by the denominator of the fraction in lowest term of described MgO-ZrO_2 brick q is more than 4, constitute value that described number of poles P obtains divided by the denominator of the fraction in lowest term of described MgO-ZrO_2 brick q so much, the group of winding respectively containing multiple same phase winding, the group of described winding is configured at described stator with separated state respectively.
9. electric rotating machine according to claim 8, wherein,
Described electric rotating machine is configured to, and the quantity of the group of described winding is 4,6,8,10 or 12,
The group of the described winding that the quantity of the group of described winding is so much respectively with in the circumferential separately roughly angularly the state at interval be configured at described stator.
10. electric rotating machine according to claim 9, wherein,
The quantity of the group of described winding is 4, and the group of described 4 windings is configured at described stator with the state at the angularly intervals separating roughly 90 degree in the circumferential.
11. electric rotating machines according to claim 8, wherein,
The described number of phases m of the voltage that induction produces is 3 phases comprising the 1st phase, the 2nd phase and the 3rd phase,
The group of the group of the winding of described 1st phase, the group of the winding of described 2nd phase and the winding of described 3rd phase is configured at described stator with the state adjacent according to this order.
12. electric rotating machines according to claim 1, wherein,
Described electric rotating machine is configured to, and described MgO-ZrO_2 brick q is 8/25.
13. electric rotating machines according to claim 12, wherein,
The described number of phases m of the voltage that induction produces is 3 phases, and the quantity Ns of described groove is 96, and described number of poles P is 100.
14. electric rotating machines according to claim 1, wherein,
Described electric rotating machine is the external rotor form that the mode of the periphery surrounding described stator configures rotor (12).
15. electric rotating machines according to claim 1, wherein,
Described electric rotating machine is made up of generator (1).
16. 1 kinds of wind generator systems (100,101), it blade (4) possessing generator (1) and be connected with the rotating shaft of described generator,
Described generator comprises: stator (11), and described stator has groove (13) and is arranged at the tooth (14) between described groove; And winding (15), described winding is wound in the described tooth of described stator by concentrating winding, described power facility becomes, MgO-ZrO_2 brick q is the mark of satisfied 1/4 < q < 1/2, described MgO-ZrO_2 brick q is the value that the quantity Ns of described groove obtains divided by the quantity of magnetic pole and the number of phases m of number of poles P and voltage, further, the winding part of 1 described winding is configured with at 1 described groove.
17. wind generator systems according to claim 16, wherein,
Described winding is wound in the side in adjacent described tooth, and is not wound in the opposing party, thus is configured to the winding part being configured with 1 described winding at 1 described groove.
18. wind generator systems according to claim 17, wherein,
Described wind generator system is configured to, and the described tooth being wound with described winding and the described tooth not being wound with described winding are alternately configured at described stator.
19. wind generator systems according to claim 16, wherein,
Described wind generator system is configured to, and the molecule of the fraction in lowest term of described MgO-ZrO_2 brick q is the even number larger than 3.
20. wind generator systems according to claim 16, wherein,
Described wind generator system is configured to, and the quantity Ns of described groove is the value that number of phases m is multiplied by 4n (n is the natural number of more than 1) and obtains.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/071364 WO2014030246A1 (en) | 2012-08-23 | 2012-08-23 | Rotating electrical machine and wind generator system |
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| Publication Number | Publication Date |
|---|---|
| CN104508958A true CN104508958A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201280074959.9A Pending CN104508958A (en) | 2012-08-23 | 2012-08-23 | Rotating electrical machine and wind generator system |
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| Country | Link |
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| JP (1) | JPWO2014030246A1 (en) |
| CN (1) | CN104508958A (en) |
| WO (1) | WO2014030246A1 (en) |
Cited By (3)
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| CN109314436A (en) * | 2016-04-13 | 2019-02-05 | 詹尼斯机器人移动技术加拿大公司 | Axial flux machine including the inside thrust bearing of diameter and diameter outward thrust bearing |
| CN110086270A (en) * | 2019-06-17 | 2019-08-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator, motor and compressor |
| CN113692685A (en) * | 2019-04-09 | 2021-11-23 | 国家科学研究中心 | Stator winding arrangement |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2015061464A (en) * | 2013-09-20 | 2015-03-30 | 株式会社東芝 | Permanent magnet rotary electric machine and wind generator system |
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- 2012-08-23 WO PCT/JP2012/071364 patent/WO2014030246A1/en active Application Filing
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| CN2389440Y (en) * | 1999-09-09 | 2000-07-26 | 机械工业部广州电器科学研究所 | Brushless dc motor with multipole different winding |
| US20040155537A1 (en) * | 2001-12-20 | 2004-08-12 | Masatsugu Nakano | Permanent magnet type dynamo-electric machine and permanent magnet synchronous generator for wind power generation |
| JP2005012986A (en) * | 2003-05-29 | 2005-01-13 | Mitsubishi Electric Corp | Permanent magnet motor |
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| CN109314436A (en) * | 2016-04-13 | 2019-02-05 | 詹尼斯机器人移动技术加拿大公司 | Axial flux machine including the inside thrust bearing of diameter and diameter outward thrust bearing |
| CN109314436B (en) * | 2016-04-13 | 2020-10-27 | 詹尼斯机器人移动技术加拿大公司 | Axial flux electric machine comprising a radially inner thrust bearing and a radially outer thrust bearing |
| US11128188B2 (en) | 2016-04-13 | 2021-09-21 | Genesis Robotics And Motion Technologies Canada, Ulc | Electric machine |
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| CN110086270A (en) * | 2019-06-17 | 2019-08-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator, motor and compressor |
| WO2020253184A1 (en) * | 2019-06-17 | 2020-12-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator, motor and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2014030246A1 (en) | 2016-07-28 |
| WO2014030246A1 (en) | 2014-02-27 |
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