WO2022137405A1 - 永久磁石式回転電機 - Google Patents
永久磁石式回転電機 Download PDFInfo
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- WO2022137405A1 WO2022137405A1 PCT/JP2020/048277 JP2020048277W WO2022137405A1 WO 2022137405 A1 WO2022137405 A1 WO 2022137405A1 JP 2020048277 W JP2020048277 W JP 2020048277W WO 2022137405 A1 WO2022137405 A1 WO 2022137405A1
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- stator
- teeth
- permanent magnet
- electric machine
- rotary electric
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- 238000004804 winding Methods 0.000 claims description 67
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 3
- 230000001133 acceleration Effects 0.000 description 39
- 230000009467 reduction Effects 0.000 description 25
- 230000004907 flux Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 230000010349 pulsation Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H49/00—Other gearings
- F16H49/005—Magnetic gearings with physical contact between gears
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- 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
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
-
- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/11—Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric clutches
-
- 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
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
- H02K21/40—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with flux distributors rotating around the magnets and within the armatures
-
- 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
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
- H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
-
- 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
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Definitions
- This disclosure relates to a permanent magnet type rotary electric machine.
- Patent Document 1 discloses a rotary electric machine which is a magnetic strain wave gearing device.
- the magnetic strain wave gearing described in the above publication includes a stator (stator), a low-speed rotor that rotates at a low speed (first rotor), and a high-speed rotor (second rotor) that rotates at a high speed according to a gear ratio. ing.
- the stator, low-speed rotor, and high-speed rotor are arranged in order from the outer peripheral side with the rotation axis as the center.
- the stator contains a coil.
- the coil is a coil for outputting the generated electric power or a coil for controlling the generated torque.
- the speed of the high-speed rotor can be changed in a state where the high-speed rotor and the low-speed rotor are not in contact with the stator, so that maintenance for dealing with mechanical wear and the like can be performed. Can be reduced. This reduces the maintenance load. Further, when the magnetic strain wave gearing device is used as a generator, the power generation system can be miniaturized because a mechanical transmission is not required.
- the stator coil (coil) is wound around the stator (stator) by distributed winding.
- the capacitance of the stator coil wound by the distributed winding becomes large, the workability of the stator coil decreases. Therefore, when the capacity of the permanent magnet type rotary electric machine described in the above publication becomes large, the workability of the stator coil is lowered. Further, when the capacity of the stator coil wound by the centralized winding becomes large, the deterioration of the workability of the stator coil is suppressed.
- stator coil of the permanent magnet type rotary electric machine described in the above publication is wound by centralized winding.
- torque pulsation may occur depending on the number of concentrated windings and the like.
- an index called a winding coefficient which indicates the ratio of the magnetic flux interlinking with the stator coil among the magnetic flux generated from the second magnetic pole piece (permanent magnet) is an evaluation of efficiency or output density. Used for. The larger the winding coefficient, the more the magnetic flux generated from the second magnetic pole piece is effectively interlinked with the stator coil, so that the efficiency or output density of the permanent magnet type rotary electric machine is large.
- the efficiency or the output density is also affected by the acceleration / reduction ratio. Therefore, if only the winding coefficient is considered, the efficiency or output density may not be sufficiently improved.
- the present disclosure has been made in view of the above problems, and an object thereof is to provide a permanent magnet type rotary electric machine capable of suppressing the occurrence of torque pulsation and sufficiently improving efficiency or output density.
- the permanent magnet type rotary electric machine of the present disclosure includes a stator, a first rotor, and a second rotor.
- the stator includes a stator core, a plurality of stator teeth, a plurality of stator slots, a plurality of stator magnets, and a stator coil.
- the stator core extends in a ring shape.
- the stator teeth project from the stator core toward the center of the stator core.
- Each of the plurality of stator slots is provided between the adjacent stator teeth among the plurality of stator teeth.
- Each of the plurality of stator magnets is housed in each of the plurality of stator slots.
- the stator coil is wound around each of the plurality of stator teeth.
- the first rotor is arranged inside the stator core rather than the plurality of stator magnets.
- the first rotor contains a plurality of first magnetic pole pieces.
- the plurality of first magnetic pole pieces are arranged along the circumferential direction of the stator core at intervals from the stator.
- the second rotor is arranged inside the stator core rather than the plurality of first magnetic pole pieces.
- the second rotor contains a plurality of second magnetic pole pieces.
- the plurality of second magnetic pole pieces are arranged along the circumferential direction of the stator core at intervals from the first rotor.
- the plurality of second magnetic pole pieces have a permanent magnet.
- the stator coil is wound around each of the plurality of stator teeth by a centralized winding.
- the ratio of the number of stator slots to the number of poles of the second pole pieces of the second rotor is greater than 1.25 and less than 1.5, or greater than 1.5 and greater than 3.0. Is also small.
- the ratio of the number of the stator slots to the number of poles of the plurality of second magnetic pole pieces of the second rotor is larger than 1.25 and smaller than 1.5. Or greater than 1.5 and less than 3.0. Therefore, it is possible to suppress the occurrence of torque pulsation, and it is possible to sufficiently improve efficiency or output density.
- FIG. 1 It is a schematic diagram schematically showing the structure of the permanent magnet type rotary electric machine which concerns on Embodiment 1.
- FIG. It is a graph which shows roughly the relationship between the number of slots / the number of poles and a winding coefficient which concerns on Embodiment 1.
- FIG. It is a graph which shows roughly the relationship between the number of slots / number of poles and the acceleration / deceleration ratio which concerns on Embodiment 1.
- FIG. It is a graph which shows roughly the relationship between the number of slots / number of poles and winding coefficient ⁇ acceleration / reduction ratio which concerns on Embodiment 1.
- FIG. It is a graph which shows roughly the relationship between the number of slots / the number of poles and the 5th order winding coefficient which concerns on Embodiment 1.
- FIG. It is a graph which shows roughly the relationship between the number of slots / the number of poles and the 7th winding coefficient which concerns on Embodiment 1.
- FIG. It is an enlarged view of the VII region of FIG.
- FIG. It is a schematic diagram schematically showing the structure of the permanent magnet type rotary electric machine which concerns on Embodiment 2.
- FIG. It is a schematic diagram schematically showing the structure of the stator of the permanent magnet type rotary electric machine which concerns on Embodiment 2.
- FIG. It is a schematic diagram schematically showing the structure of the permanent magnet type rotary electric machine which concerns on Embodiment 3.
- FIG. It is a schematic diagram schematically showing the structure of the stator of the permanent magnet type rotary electric machine which concerns on Embodiment 3.
- FIG. 1 It is a schematic diagram schematically showing the structure of the stator of the permanent magnet type rotary electric machine which concerns on Embodiment 4.
- FIG. 2 It is a schematic diagram which shows schematic structure of the permanent magnet type rotary electric machine which concerns on Embodiment 5.
- FIG. 5 It is a schematic diagram schematically showing the structure of the stator, the 1st power source, the 2nd power source and the 3rd power source of the permanent magnet type rotary electric machine which concerns on Embodiment 5.
- Embodiment 1 The configuration of the permanent magnet type rotary electric machine 100 according to the first embodiment will be described with reference to FIG. In the present embodiment, the configuration and operation when the permanent magnet type rotary electric machine 100 is used as a generator will be described. However, in the configuration of the permanent magnet type rotary electric machine 100, the permanent magnet type rotary electric machine 100 is used as an electric machine. It is applicable even if it is done.
- the permanent magnet type rotary electric machine 100 is a permanent magnet type rotary electric machine 100 having a speed change mechanism.
- the permanent magnet type rotary electric machine 100 is a permanent magnet type rotary electric machine 100 having a three-phase winding.
- the permanent magnet type rotary electric machine 100 includes a stator 1, a first rotor 2, and a second rotor 3.
- the stator 1, the first rotor 2, and the second rotor 3 are arranged concentrically.
- the stator 1 includes a stator core 11, a plurality of stator teeth 12, a plurality of stator slots 13, a plurality of stator magnets 15, and a stator coil 14.
- the stator coil 14 is indicated by diagonal lines.
- the number of the plurality of stator teeth 12, the number of the plurality of stator slots 13 and the number of the plurality of stator magnets 15 are the same.
- the stator core 11 extends in a ring shape.
- the center of the first rotor 2 and the center of the second rotor 3 are arranged at the same positions as the center C of the stator core 11.
- the stator teeth 12 project from the stator core 11 toward the center C of the stator core 11.
- Each of the plurality of stator slots 13 is provided between the stator teeth 12 adjacent to each other among the plurality of stator teeth 12.
- the stator coil 14 is wound around each of the plurality of stator teeth 12.
- the stator coil 14 is wound around each of the plurality of stator teeth 12 by a centralized winding. That is, the permanent magnet type rotary electric machine 100 according to the present embodiment is a centralized winding permanent magnet type rotary electric machine.
- Each of the plurality of stator magnets 15 is housed in each of the plurality of stator slots 13. Each of the plurality of stator magnets 15 is sandwiched between the stator teeth 12 adjacent to each other among the plurality of stator teeth 12. Each of the plurality of stator magnets 15 is magnetized. The polar orientation of each of the plurality of stator magnets 15 is the same along the radial direction of the stator core 11. Therefore, for example, when the center C side of the stator core 11 of the plurality of stator magnets 15 is the N pole, the center C side of the stator core 11 of the plurality of stator teeth 12 is the S pole.
- stator 1 and one stator teeth 12 constitute a pair of magnetic poles. Since the number of the plurality of stator teeth 12, the number of the plurality of stator slots 13 and the number of the plurality of stator magnets 15 are the same, the stator 1 has the same number of poles as the number of the plurality of stator slots 13. It has a logarithm. In this embodiment, the number of the plurality of stator slots 13 is NL . In the permanent magnet type rotary electric machine 100 shown in FIG. 1, NH is 54. The number of the plurality of stator slots 13 may be described as the number of slots.
- the first rotor 2 is arranged inside the stator core 11 rather than the plurality of stator magnets 15.
- the first rotor 2 is configured as a low speed rotor.
- the first rotor 2 includes a plurality of first magnetic pole pieces 21.
- the plurality of first magnetic pole pieces 21 are arranged along the circumferential direction of the stator core 11 at intervals from the stator 1.
- the plurality of first magnetic pole pieces 21 are arranged in an annular shape.
- the number of the plurality of first magnetic pole pieces 21 is NS .
- NS is 66.
- the second rotor 3 is arranged inside the stator core 11 with respect to the plurality of first magnetic pole pieces 21.
- the second rotor 3 is configured as a high-speed rotor.
- the second rotor 3 includes a plurality of second magnetic pole pieces 31 and a support portion 32.
- the plurality of second magnetic pole pieces 31 are arranged along the circumferential direction of the stator core 11 at intervals from the first rotor 2.
- the plurality of second magnetic pole pieces 31 are arranged in an annular shape.
- the plurality of second magnetic pole pieces 31 are supported by the support portion 32.
- the plurality of second magnetic pole pieces 31 are arranged on the outer periphery of the support portion 32.
- the plurality of second magnetic pole pieces 31 have permanent magnets.
- the number of the plurality of second magnetic pole pieces 31 is NH . Therefore, the number of pole pairs of the plurality of second magnetic pole pieces 31 is NH . Therefore, the number of poles of the plurality of second magnetic pole pieces 31 is 2NH .
- NH is 12.
- the ratio of the number of stator slots 13 to the number of poles of the plurality of second magnetic pole pieces 31 of the second rotor 3 is greater than 1.25 and less than 1.5. Greater than 1.5 and less than 3.0.
- the ratio of the number of the plurality of stator slots 13 to the number of poles of the plurality of second magnetic pole pieces 31 of the second rotor 3 is described as NS / 2NH .
- the ratio of the number of the plurality of stator slots 13 to the number of poles of the plurality of second magnetic pole pieces 31 of the second rotor 3 may be described as the number of slots / the number of poles.
- the stator 1, the first rotor 2, and the second rotor 3 are configured as a transmission. Specifically, the number N L of the plurality of stator slots 13, the number NS of the plurality of first magnetic pole pieces 21 and the number N H of the plurality of second magnetic pole pieces 31 satisfy the following relationship of number 1. In this case, the stator 1, the first rotor 2 and the second rotor 3 function as a transmission.
- the number NS of the plurality of stator slots 13, the number N L of the plurality of first magnetic pole pieces 21 and the number N H of the plurality of second magnetic pole pieces 31 satisfy the above-mentioned relationship of the number 1. ing. Therefore, the stator 1, the first rotor 2, and the second rotor 3 function as a transmission. Negative torque is generated in the plurality of first rotors 2 due to the interaction between the magnetic force of the plurality of stator magnets 15 and the magnetic force of the plurality of two rotors. On the other hand, when the first rotor 2 is rotated by an external power, an input is obtained to the first rotor 2.
- a current is passed through the stator 1 so that the second rotor 3 rotates in a free-run state.
- the free-run state is a state in which the rotor can rotate by inertia.
- the second rotor 3 rotates at a speed N L / N H times that of the first rotor 2.
- the permanent magnet type rotary electric machine 100 functions as a transmission.
- the second rotor 3 rotates at a rotation speed of N L / NH times that of the first rotor 2
- an induced electromotive force is generated in the stator coil 14.
- the generated power is output from the stator coil 14.
- the acceleration / reduction ratio is a magnification of the rotation speed of the second rotor 3 with respect to the rotation speed of the first rotor 2.
- the acceleration / reduction ratio, the number of the plurality of stator slots 13, and the number of the plurality of second rotors 3 satisfy the relationship of the following equation 2.
- the ratio of the magnetic flux generated from the plurality of magnetic pole pieces that contributes to the power generation of the stator coil 14 is called the winding coefficient. At least a part of the magnetic flux generated from the plurality of second magnetic pole pieces 31 is interlinking with the stator coil 14, and the magnetic flux generated from the plurality of second magnetic pole pieces 31 contributes to the power generation of the stator coil 14. .. Therefore, the winding coefficient in the present embodiment is a ratio of the magnetic flux generated from the plurality of second magnetic pole pieces 31 that contributes to the power generation of the stator coil 14.
- the winding coefficient is indicated by the following equation 3.
- N is the spatial harmonic order.
- the fundamental wave of the spatial harmonic order is 1.
- ⁇ is a shortness. The shortness is indicated by the following number 4.
- Q' is the number of slots for each pole and each phase.
- the number of phases is 3. It is shown using the following number 4, and when the right side of the number 5 is a decimal number, it is the smallest integer obtained by multiplying the value of the right side by an integer.
- the efficiency or output of the permanent magnet type rotary electric machine is evaluated by the winding coefficient. There is. Therefore, it is evaluated that the efficiency or output density of the permanent magnet type rotary electric machine increases as the winding coefficient increases. That is, only the winding coefficient is used as an index for evaluation of the permanent magnet type rotary electric machine.
- the permanent magnet type rotary electric machine 100 having a speed change mechanism like the permanent magnet type rotary electric machine 100 according to the present embodiment it is necessary to further consider the acceleration / reduction ratio of the second rotor 3.
- Each of the winding coefficient and the acceleration / reduction ratio is calculated based on the number of stator teeth 12 and the number of poles of the second magnetic pole piece 31. Therefore, if the number of stator teeth 12 and the number of poles of the second magnetic pole piece 31 are determined only in consideration of the improvement of the winding coefficient, the required acceleration / reduction ratio may not be obtained.
- the efficiency or output of the permanent magnet type rotary electric machine 100 is evaluated by the winding coefficient ⁇ acceleration / reduction ratio. That is, the winding coefficient ⁇ acceleration / reduction ratio is used as an index for evaluation of the permanent magnet type rotary electric machine 100.
- the induced voltage generated in the stator coil 14 is the winding coefficient ⁇ acceleration / deceleration ratio. Proportional. Therefore, the efficiency or output density of the permanent magnet type rotary electric machine 100 is improved by increasing the winding coefficient ⁇ acceleration / reduction ratio.
- FIG. 2 is a graph showing the relationship between NS / 2NH and the winding coefficient. As shown in FIG. 2, as NS / 2NH decreases, the winding coefficient increases. Therefore, when only the improvement of the winding coefficient is considered, it is desirable that NS / 2NH is small .
- FIG. 3 is a graph showing the relationship between NS / 2NH and the acceleration / deceleration ratio. As shown in FIG. 3, as NS / 2NH increases, the acceleration / reduction ratio increases.
- FIG. 4 is a graph showing the relationship between NS / 2NH and the winding coefficient ⁇ acceleration / deceleration ratio.
- the range of N L / 2NS according to the present embodiment is a range surrounded by the alternate long and short dash line.
- the point of NS / 2NH 1.5 is not included in the range of NS / 2NH according to the present embodiment.
- the winding coefficient ⁇ acceleration / reduction ratio increases as NS / 2NH increases.
- the winding coefficient ⁇ acceleration / reduction ratio is significantly larger than the increasing tendency.
- the point P (1.2) corresponds to the case where NS / 2NH is 1.2.
- the winding coefficient ⁇ acceleration / reduction ratio is, for example, 3.17.
- the acceleration / reduction ratio when NS / 2NH is 1.2 is not sufficiently large.
- the winding coefficient ⁇ acceleration / reduction ratio is, for example, 3.17. Therefore, the winding coefficient ⁇ acceleration / deceleration ratio when NS / 2NH is 1.239 is substantially the same as the winding coefficient ⁇ acceleration / deceleration ratio when NS / 2NH is 1.2. ..
- the winding coefficient ⁇ acceleration / reduction ratio when NS / 2NH is 1.260 is, for example, 3.19.
- the winding coefficient ⁇ acceleration / deceleration ratio when NS / 2NH is 1.260 is larger than the winding coefficient ⁇ acceleration / deceleration ratio when NS / 2NH is 1.2. Therefore, the winding coefficient ⁇ acceleration / deceleration ratio when NS / 2NH is 1.25 is larger than the winding coefficient ⁇ acceleration / deceleration ratio when NS / 2NH is 1.2. Further, the acceleration / deceleration ratio when NS / 2NH is 1.25 is larger than the acceleration / deceleration ratio when NS / 2NH is 1.2. Therefore, the acceleration / reduction ratio is sufficiently large. Therefore, it is preferable that NS / 2NH is larger than 1.25.
- the winding coefficient ⁇ acceleration / reduction ratio is, for example, 3.46.
- NS / 2NH when NS / 2NH is 1.5, the 5th order winding coefficient (spatial 5th harmonic) and the 7th order winding coefficient (spatial 7th order). Harmonics) are prominently large. Therefore, the performance of the permanent magnet type rotary electric machine 100 may deteriorate due to spatial harmonics such as torque fluctuation width (torque ripple) and loss due to harmonic flux. For example, when the fluctuation range of the torque is large, the permanent magnet type rotary electric machine 100 pulsates. The pulsation of the permanent magnet type rotary electric machine 100 due to the fluctuation of torque is called torque pulsation. Therefore, it is preferable that NS / 2NH is not 1.5.
- the winding coefficient ⁇ acceleration / reduction ratio is 1 for NS / 2NH larger than 1.25. It is larger than the winding coefficient x acceleration / reduction ratio when it is smaller than .5. Therefore, it is more preferable that NS / 2NH is greater than 1.5 and less than 3.0 than when NS / 2NH is greater than 1.25 and less than 1.5.
- NS / 2NH When NS / 2NH is 3.0, the number of the plurality of stator slots 13 is the same as the number of the stator slots 13 in the permanent magnet type rotary electric machine 100 of the distributed winding. Therefore, when NS / 2NH is 3, there is a problem in the distributed winding that the workability of the stator coil 14 deteriorates due to the large number of the plurality of stator slots 13. Further, when NS / 2N H is larger than 3, the workability of the stator coil 14 deteriorates as in the case where NS / 2N H is 3 . Therefore, it is not preferable that NS / 2NH is 3.0 or more.
- the ratio of the number of the plurality of stator slots 13 to the number of poles of the plurality of second magnetic pole pieces 31 is 9. : 4.
- NS / 2NH is 2.25.
- Table 3 when NS / 2NH is 2.25, the winding coefficient ⁇ acceleration / reduction ratio is 3.39.
- the point P (2.25) corresponds to the case where NS / 2NH is 2.25.
- FIG. 7 is a schematic diagram showing a part of the permanent magnet type rotary electric machine 100 according to the first embodiment.
- the entire permanent magnet type rotary electric machine 100 shown in FIG. 1 has a plurality of parts of the permanent magnet type rotary electric machine 100 shown in FIG. 7.
- the entire permanent magnet type rotary electric machine 100 shown in FIG. 1 has six parts of the permanent magnet type rotary electric machine 100 shown in FIG. 7.
- a part of the permanent magnet type rotary electric machine 100 shown in FIG. 7 is periodically arranged.
- the number of stator slots 13 included in a part of the permanent magnet type rotary electric machine 100 shown in FIG. 7 is, for example, 9. Further, since the number of the second magnetic pole pieces 31 included in a part of the permanent magnet type rotary electric machine 100 shown in FIG. 7 is 2, the number of pole pairs of a part of the permanent magnet type rotary electric machine 100 shown in FIG. Is 4. Further, the number of the plurality of first magnetic pole pieces 21 included in a part of the permanent magnet type rotary electric machine 100 shown in FIG. 7 is 11.
- the action and effect of the present embodiment will be described.
- the number of the stator slots 13 with respect to the number of poles of the plurality of second magnetic pole pieces 31 of the second rotor 3 The ratio ( NS / 2NH ) is greater than 1.25 and less than 1.5, or greater than 1.5 and less than 3.0. Therefore, as shown in FIG. 4, the winding coefficient ⁇ acceleration / reduction ratio can be increased. Therefore, the efficiency or output density of the permanent magnet type rotary electric machine 100 is sufficiently improved. Also, NS / 2NH is not 1.5. Therefore, it is possible to prevent the fifth-order winding coefficient and the seventh-order winding coefficient from becoming prominently large.
- the ratio of the number of the stator slots 13 to the number of poles of the plurality of second magnetic pole pieces 31 is 9: 4.
- NS / 2NH is 2.25.
- NS / 2N H is 2 in the range where NS / 2N H is greater than 1.25 and less than 1.5 and in the range greater than 1.5 and less than 3.0.
- the winding coefficient x acceleration / reduction ratio is the largest. Therefore, the efficiency or output density of the permanent magnet type rotary electric machine 100 is sufficiently improved.
- Embodiment 2 Next, the configuration of the permanent magnet type rotary electric machine 100 according to the second embodiment will be described with reference to FIGS. 4 and 8.
- the second embodiment has the same configuration and operation and effect as the first embodiment, unless otherwise specified. Therefore, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will not be repeated.
- the ratio of the number of the plurality of stator slots 13 to the number of poles of the plurality of second magnetic pole pieces 31 is 18:14. be.
- the NS / 2NH according to the present embodiment is 1.286 .
- FIG. 4 corresponds to the case where the point P (1.286) has a ratio of the number of the plurality of stator slots 13 to the number of poles of the plurality of second magnetic pole pieces 31 at 18:14.
- FIG. 8 is a schematic view showing a part of the permanent magnet type rotary electric machine 100 according to the second embodiment. The entire permanent magnet type rotary electric machine 100 has a plurality of parts of the permanent magnet type rotary electric machine 100 shown in FIG.
- the number of stator slots 13 included in a part of the permanent magnet type rotary electric machine 100 shown in FIG. 8 is 18. Further, since the number of the second magnetic pole pieces 31 included in a part of the permanent magnet type rotary electric machine 100 shown in FIG. 8 is 7, the number of pole pairs of a part of the permanent magnet type rotary electric machine 100 shown in FIG. Is 14. Further, the number of the first magnetic pole pieces 21 included in a part of the permanent magnet type rotary electric machine 100 shown in FIG. 8 is 25.
- the stator coil 14 includes a plurality of coil portions C0.
- the plurality of coil portions C0 are connected in parallel with each other.
- One coil portion C0 is wound around each of the stator teeth 12 of 18 by a concentrated winding. Therefore, a parallel circuit is configured for each of the 18 stator teeth 12. Therefore, the induced voltage is equal to every 12 stator teeth of 18.
- a part of the permanent magnet type rotary electric machine 100 shown in FIG. 8 includes one coil portion C0 out of a plurality of coil portions C0. In a part of the permanent magnet type rotary electric machine 100 shown in FIG. 8, one coil portion C0 out of a plurality of coil portions C0 is shown.
- the permanent magnet type rotary electric machine 100 is a permanent magnet type rotary electric machine 100 having a three-phase winding. Therefore, the number of the plurality of stator slots 13 is a multiple of 3. Further, since one second magnetic pole piece 31 includes two poles, the number of poles of the plurality of second magnetic pole pieces 31 of the second rotor 3 is a multiple of 2 (even number). Therefore, in the range where NS / 2N H is larger than 1.25 and smaller than 1.5, when NS / 2N H is 1.25 or more, the specific number of stator slots 13 is big.
- the minimum number of stator slots 13 for NS / 2NH to be 1.45 is 87, and the number of poles of the second magnetic pole piece 31 is 60 (the number of the second magnetic pole pieces 31 is 30). Is).
- each of the plurality of coil portions C0 is periodically arranged every 87 slots.
- the number of times one coil portion C0 is wound around one stator teeth 12 needs to be an integer, the larger the number of the plurality of stator slots 13, the greater the degree of freedom in designing the winding of the coil portion C0. small. Further, when the number of the plurality of parallel circuits by each of the plurality of coil portions C0 is large, the number of turns of each of the plurality of coil portions C0 becomes small.
- the ratio between the stator slot 13 and the number of poles of the second magnetic pole piece 31 is 12:10 ( NS /).
- the degree of freedom in designing the winding is low.
- Table 4 shows the phase and phase of the coil portion C0 wound around the plurality of stator teeth 12 according to the present embodiment.
- the plurality of stator teeth 12 include the first stator teeth T101 to the eighteenth stator teeth T118.
- the phases of the first stator teeth T101 to the eighteenth stator teeth T118 are each shifted by 140 degrees.
- a three-phase current including a U phase, a V phase, and a W phase flows through the plurality of coil portions C0. Further, the plurality of coil portions C0 are wound around the stator teeth 12 in the forward direction or the reverse direction. The direction of the rotating magnetic field generated by the three-phase current is illustrated by the white arrow.
- the phases of the adjacent stator teeth 12 are shifted by 140 degrees. Therefore, the stator teeth 12 of 18 shift the phase by a total of 2520 degrees. 2520 is a multiple of 360. Therefore, since the phase of the current is equal to each of the stator teeth 12 of 18, the induced voltage is equal to each of the stator teeth 12 of 18. Therefore, it is possible to suppress the generation of circulating current between the plurality of parallel circuits.
- the ratio of the number of the plurality of stator slots 13 to the number of poles of the plurality of second magnetic pole pieces 31 is 18 :. It is 14. Therefore, since the number of the plurality of stator slots 13 is small, it is possible to suppress the degree of freedom in designing the winding. Further, a parallel circuit is configured for each of the 18 stator teeth 12. Therefore, it is possible to suppress the generation of circulating current.
- Embodiment 3 the configuration of the permanent magnet type rotary electric machine 100 according to the third embodiment will be described with reference to FIGS. 10 and 11. Unless otherwise specified, the third embodiment has the same configuration and operation and effect as the second embodiment. Therefore, the same components as those in the second embodiment are designated by the same reference numerals, and the description thereof will not be repeated.
- the stator coil 14 includes a first coil portion C1 and a second coil portion C2.
- each of the plurality of coil portions C0 includes a first coil portion C1 and a second coil portion C2.
- the second coil portion C2 is connected in parallel to the first coil portion C1.
- the plurality of stator teeth 12 includes a plurality of first teeth portions T1 and a plurality of second teeth portions T2.
- a first coil portion C1 is wound around each of the plurality of first teeth portions T1.
- a second coil portion C2 is wound around each of the plurality of second teeth portions T2.
- the number of the plurality of first teeth portions T1 is the same as the number of the plurality of second teeth portions T2.
- Each of the plurality of first teeth portions T1 and each of the plurality of second teeth portions T2 are arranged alternately.
- the plurality of first teeth portions T1 include the first first teeth portion T101 to the ninth first teeth portion T109.
- the plurality of second teeth portions T2 include a first second teeth portion T201 to a ninth second teeth portion T209.
- the number of the first teeth portion T1 and the number of the second teeth portions T2 are multiples of 9.
- each of the first coil portion C1 and the second coil portion C2 constitutes a parallel circuit. Therefore, one coil unit C0 includes two parallel circuits.
- the phase of the current of each phase in the first group is equal to the phase of the current of each phase in the second group.
- the group 1 is a plurality of first teeth portions T1 and first coil portions C1.
- the second group is a plurality of second teeth portions T2 and second coil portions C2.
- the third group is a plurality of third teeth portions T3 and third coil portions C3.
- the phases of the U-phase currents in one group are 0 degrees, 200 degrees, and 160 degrees.
- the phases of the U-phase currents in the second group are 340 degrees, 180 degrees, and 20 degrees. Therefore, the total induced voltage is equal. Therefore, it is possible to suppress the occurrence of a phase difference between the parallel circuit of the first group and the parallel circuit of the second group. Therefore, it is possible to suppress the generation of circulating current.
- each of the plurality of first teeth portions T1 and each of the plurality of second teeth portions T2 are arranged alternately. ing. Therefore, as shown in Table 5, the induced voltage of the first coil portion C1 wound around the plurality of first teeth portions T1 and the second coil portion C2 wound around the plurality of second teeth portions T2. The induced voltages are equal. Therefore, it is possible to suppress the generation of circulating current.
- the stator coil 14 includes a first coil portion C1 and a second coil portion C2.
- Each of the first coil portion C1 and the second coil portion C2 constitutes a parallel circuit. Therefore, the number of parallel circuits included in the permanent magnet type rotary electric machine 100 can be increased as compared with the case where the stator coil 14 constitutes one parallel circuit.
- Embodiment 4 the configuration of the permanent magnet type rotary electric machine 100 according to the fourth embodiment will be described with reference to FIG. 12. Unless otherwise specified, the fourth embodiment has the same configuration and operation and effect as the third embodiment. Therefore, the same components as those in the third embodiment are designated by the same reference numerals, and the description thereof will not be repeated.
- the plurality of first teeth portions T1 and the plurality of second teeth portions T2 are alternately arranged three by three.
- the phase of the current of each phase in the first group is equal to the phase of the current of each phase in the second group.
- the phases of the U-phase currents in one group are 0 degrees, 340 degrees, and 20 degrees.
- the phases of the U-phase currents in the two groups are 200 degrees, 180 degrees, and 160 degrees. Therefore, the total induced voltage of the U phase in the first group is equal to the total induced voltage of the U phase in the second group. Therefore, it is possible to suppress the occurrence of a phase difference between the parallel circuit of the first group and the parallel circuit of the second group. Therefore, it is possible to suppress the generation of circulating current.
- the action and effect of the present embodiment will be described.
- the plurality of first teeth portions T1 and the plurality of second teeth portions T2 are alternately arranged three by three. There is. Therefore, as shown in Table 6, the induced voltage of the first coil portion C1 wound around the plurality of first teeth portions T1 and the second coil portion C2 wound around the plurality of second teeth portions T2. The induced voltages are equal. Therefore, it is possible to suppress the generation of circulating current.
- the stator coil 14 includes a first coil portion C1 and a second coil portion C2.
- Each of the first coil portion C1 and the second coil portion C2 constitutes a parallel circuit. Therefore, the number of parallel circuits included in the permanent magnet type rotary electric machine 100 can be increased as compared with the case where the stator coil 14 constitutes one parallel circuit.
- Embodiment 5 the configuration of the permanent magnet type rotary electric machine 100 according to the fifth embodiment will be described with reference to FIGS. 13 and 14.
- the fifth embodiment has the same configuration and operation and effect as the third embodiment, unless otherwise specified. Therefore, the same components as those in the third embodiment are designated by the same reference numerals, and the description thereof will not be repeated.
- two parallel circuits are configured for each of the 18 stator coils 14.
- the permanent magnet type rotary electric machine 100 includes only one power supply, it is not possible to configure three parallel circuits for each of the stator coils 14 of 18.
- the permanent magnet type rotary electric machine 100 further includes a first power source P1, a second power source P2, and a third power source P3.
- Each of the first power supply P1, the second power supply P2, and the third power supply P3 is independent.
- the phases of the first power supply P1, the second power supply P2, and the third power supply P3 are shifted by 20 degrees.
- the plurality of stator teeth 12 includes a plurality of first teeth portions T1, a plurality of second teeth portions T2, and a plurality of third teeth portions T3.
- the plurality of first teeth portions T1 are electrically connected to the first power supply P1.
- the plurality of second teeth portions T2 are electrically connected to the second power source P2.
- the plurality of third teeth portions T3 are electrically connected to the third power supply P3.
- Each of the plurality of first teeth portions T1, each of the plurality of second teeth portions T2, and each of the plurality of third teeth portions T3 are connected to the stator core 11 so as to circulate in order.
- the stator coil 14 includes a first coil portion C1, a second coil portion C2, and a third coil portion C3.
- the third coil portion C3 is wound around each of the plurality of third teeth portions T3 by concentrated winding.
- the plurality of first teeth portions T1 include the first first teeth portion T101 to the sixth first teeth portion T106.
- the plurality of second teeth portions T2 include a first second teeth portion T201 to a sixth second teeth portion T206.
- the plurality of third teeth portions T3 include a first third teeth portion T301 to a sixth third teeth portion T306.
- the phase of the current of each phase in the first group is equal to the phase of the current of each phase in the second group.
- the phases of the U-phase currents in one group are 0 degrees, 340 degrees, and 20 degrees.
- the phases of the U-phase currents in the two groups are 200 degrees, 180 degrees, and 160 degrees. Therefore, the total induced voltage of the U phase in the first group is equal to the total induced voltage of the U phase in the second group. Therefore, it is possible to suppress the occurrence of a phase difference between the parallel circuit of the first group and the parallel circuit of the second group. Therefore, it is possible to suppress the generation of circulating current.
- the phase of the current of each phase in the 1st group is out of phase with respect to the phase of the current of each phase in the 2nd group and the phase of the current in the 3rd group.
- the phases of the U-phase currents in one group are 0 degrees and 180 degrees.
- the U-phase currents in the second group are 200 degrees and 20 degrees.
- the U-phase currents in the three groups are 340 degrees and 160 degrees. Therefore, the phase of the U-phase current in the second group is shifted by 20 degrees from the phase of the U-phase current in the first group.
- the phase of the U-phase current in the third group is shifted by 20 degrees from the phase of the U-phase current in the second group. That is, the 2nd group is offset by 20 degrees from the 1st group and the 3rd group.
- the phases of the first power supply P1, the second power supply P2, and the third power supply P3 are deviated by 20 degrees. Therefore, the phase shift of the first group, the second group, and the third group by 30 degrees is canceled by the shift of the first power supply P1, the second power supply P2, and the third power supply P3. As a result, the phases of the 1st group, the 2nd group and the 3rd group become equal to each other. Therefore, 3 parallel circuits can be configured for each of the 18 stator teeth 12.
- stator 1 stator, 2 first rotor, 3 second rotor, 11 stator core, 12 stator teeth, 13 stator slot, 14 stator coil, 15 stator magnet, 21 first magnetic pole piece, 31 second Magnetic pole piece, 100 permanent magnet type rotary electric machine, C1 1st coil part, C2 2nd coil part, P1 1st power supply, P2 2nd power supply, P3 3rd power supply, T1 1st teeth part, T2 2nd teeth part.
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Abstract
Description
図1を用いて、実施の形態1に係る永久磁石式回転電機100の構成を説明する。本実施の形態では、永久磁石式回転電機100が発電機として用いられた場合における構成および動作が説明されるが、永久磁石式回転電機100の構成は、永久磁石式回転電機100が電動機として用いられた場合であっても適用可能である。
複数の磁極片から生じる磁束のうち固定子コイル14の発電に寄与する割合は、巻線係数と呼ばれている。複数の第2磁極片31から生じる磁束のうち少なくとも一部の磁束が固定子コイル14に鎖交することで、複数の第2磁極片31から生じた磁束が固定子コイル14の発電に寄与する。このため、本実施の形態における巻線係数は、複数の第2磁極片31から生じた磁束のうち固定子コイル14の発電に寄与する割合である。巻線係数は、以下の数3によって示される。
実施の形態1に係る永久磁石式回転電機100によれば、図1に示されるように、第2回転子3の複数の第2磁極片31の極数に対する複数の固定子スロット13の数の割合(NS/2NH)は、1.25よりも大きく1.5よりも小さいか、1.5よりも大きく3.0よりも小さい。このため、図4に示されるように、巻線係数×増減速比を大きくすることができる。したがって、永久磁石式回転電機100の効率あるいは出力密度が十分に向上する。また、NS/2NHは、1.5ではない。このため、5次巻線係数および7次巻線係数が突出して大きくなることを抑制することができる。よって、トルクの変動幅(トルクリップル)および高調波磁束による損失等によるトルク脈動が生じることを抑制することができる。したがって、永久磁石式回転電機100の性能が悪化することを抑制することができる。
次に、図4および図8を用いて、実施の形態2に係る永久磁石式回転電機100の構成を説明する。実施の形態2は、特に説明しない限り、上記の実施の形態1と同一の構成および作用効果を有している。したがって、上記の実施の形態1と同一の構成には同一の符号を付し、説明を繰り返さない。
実施の形態2に係る永久磁石式回転電機100によれば、図8に示されるように、複数の固定子スロット13の数と複数の第2磁極片31の極数との比は、18:14である。このため、複数の固定子スロット13の数が小さいため、巻線の設計自由度が小さくなることを抑制することができる。また、18の固定子ティース12ごとに並列回路が構成される。よって、循環電流が生じることを抑制することができる。
次に、図10および図11を用いて、実施の形態3に係る永久磁石式回転電機100の構成を説明する。実施の形態3は、特に説明しない限り、上記の実施の形態2と同一の構成および作用効果を有している。したがって、上記の実施の形態2と同一の構成には同一の符号を付し、説明を繰り返さない。
実施の形態3に係る永久磁石式回転電機100によれば、図10に示されるように、複数の第1ティース部T1の各々と複数の第2ティース部T2の各々とは、交互に配置されている。このため、表5に示されるように、複数の第1ティース部T1に巻き回された第1コイル部C1の誘起電圧と複数の第2ティース部T2に巻き回された第2コイル部C2の誘起電圧は等しい。よって、循環電流が生じることを抑制することができる。
次に、図12を用いて、実施の形態4に係る永久磁石式回転電機100の構成を説明する。実施の形態4は、特に説明しない限り、上記の実施の形態3と同一の構成および作用効果を有している。したがって、上記の実施の形態3と同一の構成には同一の符号を付し、説明を繰り返さない。
実施の形態4に係る永久磁石式回転電機100によれば、図12に示されるように、複数の第1ティース部T1と複数の第2ティース部T2とは、3つずつ交互に配置されている。このため、表6に示されるように、複数の第1ティース部T1に巻き回された第1コイル部C1の誘起電圧と複数の第2ティース部T2に巻き回された第2コイル部C2の誘起電圧は等しい。よって、循環電流が生じることを抑制することができる。
次に、図13および図14を用いて、実施の形態5に係る永久磁石式回転電機100の構成を説明する。実施の形態5は、特に説明しない限り、上記の実施の形態3と同一の構成および作用効果を有している。したがって、上記の実施の形態3と同一の構成には同一の符号を付し、説明を繰り返さない。
実施の形態5に係る永久磁石式回転電機100によれば、第1電源P1、第2電源P2および第3電源P3の位相は、20度ずつずれている。このため、1群、2群および3群の位相の30度ずつのずれは、第1電源P1、第2電源P2および第3電源P3のずれによって打ち消されることで解消される。これにより、1群、2群および3群の各々の位相は、等しくなる。よって、18の固定子ティース12ごとに3の並列回路を構成することができる。
Claims (6)
- 環状に延在する固定子鉄心と、前記固定子鉄心から前記固定子鉄心の中心に向かって突出している複数の固定子ティースと、前記複数の固定子ティースのうち隣り合う固定子ティース同士の間にそれぞれ設けられた複数の固定子スロットと、前記複数の固定子スロットの各々にそれぞれ収納された複数の固定子磁石と、前記複数の固定子ティースの各々に巻き回された固定子コイルとを含む固定子と、
前記固定子から間隔を空けて前記固定子鉄心の前記周方向に沿って配置された複数の第1磁極片を含み、かつ前記複数の固定子磁石よりも前記固定子鉄心の内側に配置された第1回転子と、
前記第1回転子から間隔を空けて前記固定子鉄心の周方向に沿って配置されかつ永久磁石を有する複数の第2磁極片を含み、かつ前記複数の第1磁極片よりも前記固定子鉄心の内側に配置された第2回転子とを備え、
前記固定子コイルは、前記固定子ティースに集中巻によって巻き回されており、
前記第2回転子の前記複数の第2磁極片の極数に対する前記複数の固定子スロットの数の割合は、1.25よりも大きく1.5よりも小さいか、1.5よりも大きく3.0よりも小さい、永久磁石式回転電機。 - 前記複数の固定子スロットの数と前記複数の第2磁極片の極数との比は、9:4である、請求項1に記載の永久磁石式回転電機。
- 前記複数の固定子スロットの数と前記複数の第2磁極片の極数との比は、18:14である、請求項1に記載の永久磁石式回転電機。
- 前記固定子コイルは、第1コイル部と、前記第1コイル部に並列に接続された第2コイル部とを含み、
前記複数の固定子ティースは、前記第1コイル部が巻き回された複数の第1ティース部と、前記第2コイル部が巻き回された複数の第2ティース部とを含み、
前記複数の第1ティース部の数は、前記複数の第2ティース部の数と同じであり、
前記複数の第1ティース部の各々と前記複数の第2ティース部の各々とは、交互に配置されている、請求項3に記載の永久磁石式回転電機。 - 前記固定子コイルは、第1コイル部と、前記第1コイル部に並列に接続された第2コイル部とを含み、
前記複数の固定子ティースは、前記第1コイル部が巻き回された複数の第1ティース部と、前記第2コイル部が巻き回された複数の第2ティース部とを含み、
前記複数の第1ティース部の数は、前記複数の第2ティース部の数と同じであり、
前記複数の第1ティース部と前記複数の第2ティース部とは、3つずつ交互に配置されている、請求項3に記載の永久磁石式回転電機。 - 第1電源、第2電源および第3電源をさらに備え、
前記複数の固定子ティースは、前記第1電源に電気的に接続された複数の第1ティース部、前記第2電源に電気的に接続された複数の第2ティース部および前記第3電源に接続された複数の第3ティース部を含み、
前記複数の第1ティース部の各々、前記複数の第2ティース部の各々および前記複数の第3ティース部の各々は、順に循環するように前記固定子鉄心に接続されており、
前記第1電源、前記第2電源および前記第3電源の位相は、20度ずつずれている、請求項3に記載の永久磁石式回転電機。
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- 2020-12-23 US US18/267,103 patent/US20240120817A1/en active Pending
- 2020-12-23 CN CN202080107942.3A patent/CN116670985A/zh active Pending
- 2020-12-23 EP EP20966895.3A patent/EP4270745A4/en active Pending
- 2020-12-23 WO PCT/JP2020/048277 patent/WO2022137405A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110127869A1 (en) * | 2008-06-03 | 2011-06-02 | Magnomatics Limited | Magnetic gear |
WO2015137392A1 (ja) * | 2014-03-12 | 2015-09-17 | 株式会社Ihi | 環状磁極部材及び磁気波動歯車装置 |
WO2015178111A1 (ja) * | 2014-05-20 | 2015-11-26 | 株式会社Ihi | 磁気波動歯車装置 |
Non-Patent Citations (1)
Title |
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Also Published As
Publication number | Publication date |
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CN116670985A (zh) | 2023-08-29 |
US20240120817A1 (en) | 2024-04-11 |
JP7019105B1 (ja) | 2022-02-14 |
JPWO2022137405A1 (ja) | 2022-06-30 |
EP4270745A1 (en) | 2023-11-01 |
EP4270745A4 (en) | 2024-02-28 |
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