JP2007228656A - Dynamo-electric machine utilizing inductive repulsion/attraction principle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dynamo-electric machine for utilizing an inductive repulsion/attraction principle, using a magnetic bearing for eliminating a necessity of a control, improving the reliability, and extending a lifetime. <P>SOLUTION: The dynamo-electric machine for utilizing the inductive repulsion/attraction principle is provided with a cylindrical rotor (1), a stator (4) disposed on an outer circumference of the rotor (1) and having first U, V, W-phase coils and second U, V, W-phase coils (10) adjacently connected in a figure of 8 in the axial direction of the rotor (1) and sequentially and circumferentially disposed, and U, V, W-phase wires (12) connected to null connections (11) between the first U, V, W-phase coils and the second U, V, W-phase coils. The first U, V, W-phase coils and the second U, V, W-phase coils are connected in parallel on both sides of the U, V, W-phase wires. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rotating electrical machine using an induction repulsive suction principle, and more particularly to a highly reliable electric motor and generator having a long life due to a magnetic bearing that does not require control.

  In conventional active control magnetic bearings, improvement in reliability due to control is a problem. In particular, the life of the bearing is a major factor that determines the life of the rotating electric machine of the motor or generator.

  For example, in the case of a gas turbine generator, it is common to rotate the generator from the output shaft of the gas turbine via a speed reducer. If the machines can be directly connected, a compact and highly reliable power generation system can be configured.

The present applicant has already used a magnetic levitation device as a form of use of the magnetic levitation device, transferring energy to the flywheel without going through the rotating shaft, and ensuring a sufficient gap between the rotor and the stator, while maintaining low loss and high efficiency. A flywheel storage system has been proposed (see Patent Document 1 below).
JP 11-341708 A

  In view of the above circumstances, an object of the present invention is to provide a rotating electrical machine that uses a repulsive suction principle that has high reliability and a long life by using a magnetic bearing that does not require control.

  [1] In a rotating electrical machine using the induction repulsive suction principle, a rotor (1) configured in a cylindrical shape and an outer peripheral surface of the rotor (1) are arranged in the axial direction of the rotor (1). A first U-phase coil (5), a first V-phase coil (6), a first W-phase coil (7), a second U-phase coil (8), which are connected in an adjacent 8-shape; A stator (4) having a structure in which a second V-phase coil (9) and a second W-phase coil (10) are sequentially arranged in the circumferential direction; the first U-phase coil (5); The U-phase wiring (12) connected to the null connection point (11) to the second U-phase coil (8), and the null connection point to the first V-phase coil (6) and the second V-phase coil (9) V-phase wiring (13) connected to (11), and W-phase wiring (11) connected to the null connection point (11) to the first W-phase coil (7) and the second W-phase coil (10). 4), and a first U-phase coil (5) and a first V-phase coil on both sides of the U-phase wiring (12), the V-phase wiring (13), and the W-phase wiring (14). (6) The first W-phase coil (7), the second U-phase coil (8), the second V-phase coil (9), and the second W-phase coil (10) are connected in parallel. It is characterized by that.

  [2] In the rotating electrical machine using the induction repulsive suction principle described in [1] above, the rotor (1) is made of a permanent magnet, and a U-phase power source (17) is connected to the U-phase wiring (12). A V-phase power supply (18) is connected to the phase wiring (13), and a W-phase power supply (19) is connected to the W-phase wiring (14) to form a permanent magnet type synchronous motor.

  [3] In the rotating electrical machine using the induction repulsive suction principle described in [1], the rotor (1) is a superconducting coil, and the U-phase wiring (12), the V-phase wiring (13), and the W-phase wiring. (14) is a superconducting generator that outputs electric power.

[4] In a rotating electric machine using the induction repulsive suction principle,
[A] (a) A first U-phase coil (31), a first V-phase coil (32), and a first W-phase that are configured in a cylindrical shape and are connected in an axially adjacent 8-shape. A coil (33), a second U-phase coil (34), a second V-phase coil (35), and a second W-phase coil (36) are sequentially arranged in the circumferential direction, and (b) the first A U-phase wiring (38) connected to a null connection point (37) to a first U-phase coil (31) and a second U-phase coil (34); a first V-phase coil (32); A V-phase wiring (39) connected to the V-phase coil (35) to the null connection point (37), and a null connection point (37 to the first W-phase coil (33) and the second W-phase coil (36). W-phase wiring (40) connected to the first U-phase wiring (38), and (c) the first U-side wiring on both sides with the U-phase wiring (38), V-phase wiring (39) and W-phase wiring (40) as the center. Coil (31), first V phase coil (32), first W phase coil (33), second U phase coil (34), second V phase coil (35), second W A stator (30) formed by connecting a phase coil (36) in parallel;
[B] A rotor arranged on the outer peripheral surface of the stator (30).

  [5] In the rotating electrical machine using the induction repulsive suction principle described in [4] above, the rotor is made of a permanent magnet, and a U-phase power source (43) is connected to the U-phase wiring (38), and the V-phase wiring ( 39) is connected to a V-phase power source (44), and a W-phase power source (45) is connected to the W-phase wiring (40) to form a permanent magnet type synchronous motor.

  [6] In the rotating electrical machine using the induction repulsive suction principle described in [4] above, the rotor is a superconducting coil, and the U-phase wiring (38), the V-phase wiring (39), and the W-phase wiring (40). It is a superconducting generator that outputs electric power.

  [7] A rotating electrical machine using the induction repulsive suction principle according to any one of [1] to [6] above, wherein the permanent magnet rotor is a permanent magnet rotor with a Halbach arrangement. Features.

  [8] A rotating electrical machine using the induction repulsive suction principle according to any one of [1] to [6] above, wherein the permanent magnet type rotor is an embedded permanent magnet type to which a magnetic body is coupled. It is a rotor.

  [9] A rotating electrical machine using the induction repulsive suction principle according to any one of [1] to [8], wherein the permanent magnet type rotor has four poles.

  [10] A rotating electrical machine using the induction repulsive suction principle according to any one of [1] to [8], wherein the permanent magnet type rotor has eight poles.

  According to the present invention, there is provided a rotating electrical machine that utilizes the principle of induction repulsive attraction with high reliability and long life by a magnetic bearing that does not require control.

  A rotating electrical machine that uses the principle of induction repulsive suction of the present invention is a rotor configured in a cylindrical shape, and is arranged on the outer peripheral surface of the rotor, and is connected in an 8-shaped configuration adjacent to the rotor in the axial direction. The first U-phase coil, the first V-phase coil, the first W-phase coil, the second U-phase coil, the second V-phase coil, and the second W-phase coil are sequentially arranged in the circumferential direction. A N-phase connected to the first U-phase coil and the second U-phase coil, and a null connection to the first V-phase coil and the second V-phase coil. V-phase wiring, and W-phase wiring null-connected to the first W-phase coil and the second W-phase coil, and the U-phase wiring, V-phase wiring, and W-phase wiring are centered on both sides. 1 U-phase coil, 1st V-phase coil, 1st W-phase coil, 2nd U-phase coil, 2nd V-phase coil, 2nd W-phase coil A connected in parallel.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic view of an electric motor that is rotated according to the principle of a permanent magnet type synchronous motor according to an embodiment of the present invention. FIG. 1 (a) is a perspective view thereof, FIG. 1 (b) is a sectional view thereof, and FIG. c) is a partial development view thereof. FIG. 2 is a circuit diagram of the stator of this electric motor.

  As shown in FIG. 1, the rotor 1 is composed of N pole 2A and S pole 3C, S pole 3A and N pole 2C, N pole 2B and S pole 3D, and S pole 3B and N pole 2D. That is, the 4-pole inner rotor has a cylindrical shape. On the outer peripheral surface of the rotor 1, a first U-phase coil 5, a first V-phase coil 6, a first W-phase coil 7, and a second wire connected in the shape of a figure 8 adjacent in the axial direction. A stator 4 having a structure in which a U-phase coil 8, a second V-phase coil 9, and a second W-phase coil 10 are sequentially arranged in the circumferential direction is formed, and from these rotor 1 and stator 4, an electric motor is formed. Is configured. This principle can also be used as a superconducting generator when the permanent magnet is replaced with a superconducting coil.

  As shown in FIG. 2, the stator 4 includes a first U-phase coil 5, a first V-phase coil 6, a first W-phase coil 7, a second U-phase coil 8, and a second V-phase coil 9. , The second W-phase coil 10, and each coil 5, 6, 7, 8, 9, 10 is two coil elements 5A, 5B, 6A, 6B, 7A, 7B adjacent in the axial direction of the motor. 8A, 8B, 9A, 9B, 10A, 10B, and two of them are a set of coil elements 5A, 5B, 6A, 6B, 7A, 7B, 8A, 8B, 9A, 9B, 10A, 10B. The first U-phase coil 5, the first V-phase coil 6, the first W-phase coil 7, the second U-phase coil 8, the second U-phase coil 8, etc. 1 V-phase coil 9 and 1st W-phase coil 10 are each null-connected at a null connection point 11 to form a first U-phase. The first coil 5 and the second U-phase coil 8 are connected to the U-phase wiring 12, the first V-phase coil 6 and the second V-phase coil 9 are connected to the V-phase wiring 13, and the first W-phase coil 7 and the second W-phase coil 10 is connected to W-phase wiring 14. Further, in the case of this permanent magnet type synchronous motor, the U-phase power supply 17 is connected to the U-phase wiring 12 by the connection point 12A, the V-phase power supply 18 is connected to the V-phase wiring 13 by the connection point 13A, and the W-phase wiring 14 is A W-phase power source 19 is connected to each other by an end connection point 14A. Further, a connection point 12B at the rear end of the U-phase wiring 12, a connection point 13B at the rear end of the V-phase wiring 13, and a connection point 14B to the W-phase wiring 14 are respectively connected to the connection point 16 through the connection line 15. Configured to connect. Note that the U-phase power supply 17, the V-phase power supply 18, and the W-phase power supply 19 are connected in a Y shape having a neutral point 20.

  Hereinafter, the operation of this electric motor will be described.

  FIG. 3 is a circuit diagram of a rotational torque generating current circuit of a motor that is rotated on the principle of the permanent magnet type synchronous motor of the present invention.

  As shown in FIG. 3, the U-phase current 21 is supplied from the U-phase power source 17 to the first U-phase coil 5 and the second U-phase coil 8 via the U-phase wiring 12, and the first V-phase coil 6 and the second U-phase coil 8. A V-phase current 22 is supplied to the V-phase coil 9 from the W-phase power supply 18 via the V-phase wiring 13, and a W-phase power supply 19 is supplied to the first W-phase coil 7 and the second W-phase coil 10 via the W-phase wiring 14. Torque is generated by passing a W-phase current 23. That is, torque can be generated based on the principle of a permanent magnet type synchronous motor by flowing a three-phase current through the stator (armature coil).

  FIG. 4 is a current guide circuit diagram in the direction perpendicular to the axis of the motor rotating on the principle of the permanent magnet type synchronous motor of the present invention.

  As shown in FIG. 4, the principle of torque generation in the direction perpendicular to the axis of the electric motor is as follows: the first U-phase coil 5, the first V-phase coil 6, the first W-phase coil 7, and the second Since the U-phase coil 8, the second V-phase coil 9, and the second W-phase coil 10 are connected in parallel, when the permanent magnet type rotor 1 is displaced in the direction perpendicular to the motor shaft, An induced current is induced. A guide force in a direction perpendicular to the axis is generated by the electromagnetic force acting between the induced current and the permanent magnet type rotor 1.

  FIG. 5 is a current guide circuit diagram in a direction parallel to the axis of an electric motor rotated on the principle of the permanent magnet type synchronous electric motor of the present invention.

  As shown in this figure, the principle of generation of torque force in the direction parallel to the shaft of the electric motor is such that the first U-phase coil 5 and the first V-phase coil 6 are in the direction parallel to the motor shaft. The first W-phase coil 7, the second U-phase coil 8, the second V-phase coil 9, and the second W-phase coil 10 are each connected in the shape of 8 and are parallel to the axis of the motor. When the permanent magnet type rotor 1 is displaced in the right direction, an induced current flows through the figure 8 circuit. A guide force in a direction perpendicular to the axis is generated by the electromagnetic force acting between the induced current and the permanent magnet type rotor 1.

  In the above embodiment, the operation as an electric motor has been described, but this principle can also be used as a superconducting generator when a permanent magnet as a rotor is replaced with a superconducting coil.

  In the above embodiment, a so-called inner rotor type rotating electric machine has been described. However, an outer rotor type rotating electric machine can also be configured.

  FIG. 6 is a sectional view showing an outer rotor type rotating electric machine according to another embodiment of the present invention, and FIG. 7 is a wiring diagram of the stator.

  In FIG. 6, reference numeral 30 denotes a cylindrical stator, which is wired in the same manner as shown in FIG. The wiring is shown in FIG. A rotor 50 is disposed on the outer periphery of the stator 30. This is a so-called outer rotor type rotating electrical machine.

  In FIG. 7, the stator 30 includes a first U-phase coil 31, a first V-phase coil 32, a first W-phase coil 33, a second U-phase coil 34, a second V-phase coil 35, a second W coil 36, each coil 31, 32, 33, 34, 35, 36 is two coil elements 31A, 31B, 32A, 32B, 33A, 33B, 34A, 34B adjacent in the axial direction of the motor. , 35A, 35B, 36A, 36B, and two of them are used as a set of coil elements 31A, 31B, 32A, 32B, 33A, 33B, 34A, 34B, 35A, 35B, 36A, 36B. The first U-phase coil 31, the first V-phase coil 32, the first W-phase coil 33, the second U-phase coil 34, and the first V that are connected in the shape of the figure 8 Phase coil 35, no. The W-phase coil 36 is null-connected at a null connection point 37, and the first U-phase coil 31 and the second U-phase coil 34 are connected to the U-phase wiring 38, and the first V-phase coil 32 and the second V-phase coil 34 are connected. Phase coil 35 is connected to V-phase wiring 39, and first W-phase coil 33 and second W-phase coil 36 are connected to W-phase wiring 40, respectively. Further, in the case of this permanent magnet type synchronous motor, the U-phase power supply 43 is connected to the U-phase wiring 38 by the connection point 38A, the V-phase power supply 44 is connected to the V-phase wiring 39 by the connection point 39A, and the W-phase wiring 40 is connected. The W-phase power supply 45 is connected to each other by the connection point 40A. Further, the connection point 38B at the rear end of the U-phase wiring 38, the connection point 39B at the rear end of the V-phase wiring 39, and the connection point 40B at the rear end of the W-phase wiring 40 are connected together via a connection line 41, respectively. 42 is connected. Note that the U-phase power supply 43, the V-phase power supply 44, and the W-phase power supply 45 are connected in a Y shape having a neutral point 46.

  Except for the fact that it operates as an outer rotor type synchronous motor in this way, its operation is the same as that shown in FIGS.

  Moreover, the following modifications can be given.

  In the above embodiment, the 4-pole permanent magnet type rotor has been described. However, as shown in FIG. 8, the permanent magnet type rotor can be an 8-pole permanent magnet type rotor 51. In that case, four sets of stator U, V, W three-phase coils 52 provided on the outside are configured to correspond to the 8-pole permanent magnet rotor 51. Naturally, an outer rotor type rotating electrical machine in which the coils of the stator are arranged on the inner side and the permanent magnet type rotor is arranged on the outer side may be used. In addition, it is also possible to comprise more than 8 poles, for example, 12 poles and 16 poles.

  Further, as shown in FIG. 9, the permanent magnet type rotor may be configured as a permanent magnet type rotor 53 having a Halbach arrangement. A U, V, W three-phase coil 54 is disposed outside as a stator.

  Furthermore, as shown in FIG. 10, the permanent magnet rotor may be configured as an embedded permanent magnet rotor 55 in which the permanent magnet 56 and the magnetic body 57 are connected. A three-phase coil 58 of U, V, and W is disposed as a stator on the outside. Furthermore, you may comprise so that an iron core may be inserted in a coil.

  In addition, a three-phase four-wire system in which the above-described connection points 16 and 42 and the neutral points 20 and 46 of the three-phase power supply (not shown) of Y, U, and W are connected by a neutral wire (not shown). It can also be configured as an equation.

  Naturally, also in FIGS. 9 and 10, an outer rotor type rotating electrical machine in which the coils of the stator are arranged on the inner side and the rotors are arranged on the outer side may be used.

  In addition, this invention is not limited to the said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.

  The rotating electrical machine using the induction repulsive suction principle of the present invention can be used for a rotary motor or generator with high reliability and long life due to a magnetic bearing that does not require control.

It is a schematic diagram of the electric motor rotated by the principle of the permanent magnet type synchronous motor which shows the Example of this invention. It is a circuit diagram of a stator of a permanent magnet type synchronous motor showing an embodiment of the present invention. It is a rotation torque generation electric current circuit diagram of the electric motor rotated by the principle of the permanent magnet type synchronous electric motor of the present invention. It is a current guide circuit diagram regarding the direction perpendicular to the axis of the motor rotated on the principle of the permanent magnet type synchronous motor of the present invention. It is a current guide circuit figure regarding the direction parallel to an axis of the electric motor rotated on the principle of the permanent magnet type synchronous motor of the present invention. It is sectional drawing which shows the outer-rotor type rotary electric machine which shows the other Example of this invention. It is a wiring diagram of the stator of the outer rotor type rotary electric machine which shows the other Example of this invention. It is a figure which shows the coil arrangement | positioning of the stator which made the permanent magnet rotor of this invention 8 poles. It is a figure which shows the modification (the 1) of the permanent magnet type | mold rotor of the permanent magnet type | mold synchronous motor of this invention. It is a figure which shows the modification (the 2) of the permanent magnet type | mold rotor of the permanent magnet type | mold synchronous motor of this invention.

Explanation of symbols

1 Rotor 2A, 2B, 2C, 2D Permanent magnet N pole 3A, 3B, 3C, 3D Permanent magnet S pole 4,30 Stator 5,31 First U-phase coil 5A, 5B, 6A, 6B, 7A , 7B, 8A, 8B, 9A, 9B, 10A, 10B, 31A, 31B, 32A, 32B, 33A, 33B, 34A, 34B, 35A, 35B, 36A, 36B Coil element 6, 32 First V-phase coil 7 , 33 First W-phase coil 8, 34 Second U-phase coil 9, 35 Second V-phase coil 10, 36 Second W-phase coil 11, 37 Null connection point 12, 38 U-phase wiring 12A, 12B , 13A, 13B, 14A, 14B, 16, 38A, 38B, 39A, 39B, 40A, 40B, 42 Connection point 13, 39 V phase wiring 14, 40 W phase wiring 15, 41 Connection line 17, 43 U phase Source 18, 44 V-phase power supply 19, 45 W-phase power supply 20, 46 Neutral point of three-phase power supply 21 U-phase current 22 V-phase current 23 W-phase current 51 8-pole permanent magnet rotor 52, 54, 58 U , V, W three-phase coil 53 Permanent magnet type rotor arranged in Halbach 55 Embedded permanent magnet type rotor 56 Permanent magnet 57 Magnetic body

Claims (10)

(A) a rotor (1) configured in a cylindrical shape;
(B) a first U-phase coil (5) disposed on the outer peripheral surface of the rotor (1) and connected in an 8-shaped configuration adjacent to the axial direction of the rotor (1); a first V Phase coil (6), first W-phase coil (7), second U-phase coil (8), second V-phase coil (9), and second W-phase coil (10) sequentially in the circumferential direction A stator (4) having a structure arranged in
(C) U-phase wiring (12) connected to the null connection point (11) to the first U-phase coil (5) and the second U-phase coil (8), and a first V-phase coil (6 ) And the second V-phase coil (9), the V-phase wiring (13) connected to the null connection point (11), the first W-phase coil (7), and the second W-phase coil (10) W-phase wiring (14) connected to the null connection point (11),
(D) a first U-phase coil (5), a first V-phase coil (6) on both sides around the U-phase wiring (12), the V-phase wiring (13), and the W-phase wiring (14); The first W-phase coil (7), the second U-phase coil (8), the second V-phase coil (9), and the second W-phase coil (10) are connected in parallel. A rotating electrical machine that uses the principle of induction repulsive suction.   The rotating electrical machine using the induction repulsive suction principle according to claim 1, wherein the rotor (1) is made of a permanent magnet, a U-phase power source (17) is connected to the U-phase wiring (12), and the V-phase wiring (13). ) And a W-phase power source (19) connected to the W-phase wiring (14), respectively, to form a permanent magnet type synchronous motor. .   The rotating electrical machine using the induction repulsive suction principle according to claim 1, wherein the rotor (1) is a superconducting coil, and the U-phase wiring (12), the V-phase wiring (13), and the W-phase wiring (14) A rotating electrical machine utilizing the principle of induction repulsive suction, characterized by being a superconducting generator that outputs electric power. [A] (a) A first U-phase coil (31), a first V-phase coil (32), and a first W-phase that are configured in a cylindrical shape and are connected in an axially adjacent 8-shape. The coil (33), the second U-phase coil (34), the second V-phase coil (35), and the second W-phase coil (36) are sequentially arranged in the circumferential direction,
(B) a U-phase wiring (38) connected to a null connection point (37) to the first U-phase coil (31) and the second U-phase coil (34); and a first V-phase coil (32). ) And the second V-phase coil (35), the V-phase wiring (39) connected to the null connection point (37), the first W-phase coil (33), and the second W-phase coil (36). W-phase wiring (40) connected to the null connection point (37),
(C) A first U-phase coil (31), a first V-phase coil (32) on both sides around the U-phase wiring (38), the V-phase wiring (39), and the W-phase wiring (40), A stator comprising a first W-phase coil (33), a second U-phase coil (34), a second V-phase coil (35), and a second W-phase coil (36) connected in parallel. (30),
[B] A rotating electrical machine using the principle of induction repulsion suction, comprising a rotor disposed on the outer peripheral surface of the stator (30).   5. The rotating electrical machine using the induction repulsive suction principle according to claim 4, wherein the rotor is made of a permanent magnet, a U-phase power source (43) is connected to the U-phase wiring (38), and a V-phase wiring (39) is connected to the V-phase wiring (39). A rotating electrical machine using an induction repulsion attracting principle, wherein a phase power supply (44) is a permanent magnet type synchronous motor by connecting a W phase power supply (45) to the W phase wiring (40).   5. The rotating electrical machine using the induction repulsive suction principle according to claim 4, wherein the rotor is a superconducting coil and outputs electric power to the U-phase wiring (38), the V-phase wiring (39), and the W-phase wiring (40). A rotating electrical machine using the principle of induction repulsive suction, characterized in that it is a superconducting generator.   The induction repulsive attraction using the induction repulsive attraction principle according to any one of claims 1 to 6, wherein the permanent magnet type rotor is a permanent magnet type rotor having a Halbach arrangement. Rotating electric machine using the principle.   7. A rotating electrical machine using the induction repulsive suction principle according to claim 1, wherein the permanent magnet type rotor is an embedded permanent magnet type rotor to which a magnetic body is connected. A rotating electric machine that uses the principle of induced repulsive suction.   9. A rotating electrical machine using the induced repulsive suction principle according to claim 1, wherein the permanent magnet type rotor has four poles. .   9. A rotating electric machine using the induction repulsive suction principle according to claim 1, wherein the permanent magnet type rotor has eight poles. .

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