JP7288337B2 - three phase alternator - Google Patents

Description

The present invention relates to a three-phase alternator in which a rotor and a stator are arranged within a housing.

Patent Document 1 discloses a structure in which a cylindrical outer stator and an inner stator are coaxially arranged in a housing, and a rotor is coaxially arranged between the outer stator and the inner stator. It is In Patent Document 1, the rotor has a structure in which 12 permanent magnets are arranged in a ring shape with magnetic poles alternately directed, and the rotor has a structure in which 18 coils are arranged in a ring shape.

Patent Document 2 discloses a structure of a stator of a motor. The stator includes a plurality of coils arranged in a ring in the circumferential direction, and lead wires extending from the coils are sandwiched between an inner mold and an outer mold and bent to form a first straight portion and a second straight portion. . Twelve coils are shown in this prior art such that after one coil is wound the conductor is wound on an adjacent core.

In some cases, the coil is not wound around adjacent cores but is wound around cores that are separated from each other, but this does not increase the voltage taken out.

JP 2018-108007 A JP 2018-074861 A

In order to increase the amount of electricity taken out from the three output terminals (U, V, W) of a three-phase alternator, it is necessary to increase the number of coils and the number of coil turns. The number of coils and the number of turns in the coils are also naturally limited due to the limited capacity of the rotor.

Conventionally, one end of a single conductor wire is connected to a U terminal, a V terminal or a W terminal, this conductor wire is wound around a first core to form a first coil, and then a conductor wire extending from the first coil is connected. Conductive wires are sequentially wound around adjacent cores so that a second coil is formed by winding a second core, and a conductive wire extending from the sixth coil is connected to the neutral terminal (in the case of star connection).

When the conductor wire forming one coil is wound around the adjacent core to form the next coil as described above, since the number of series circuits formed is constant, a higher voltage cannot be taken out.

In order to solve the above problems, a three-phase alternator according to the present invention has a rotor and a stator coaxially arranged in a housing, and the rotor has a magnet whose surface facing the stator has an N pole. and S pole magnets are alternately arranged in an annular shape, and the stator has a coil group consisting of six coils arranged opposite to each of the magnets, and each coil group has a winding direction of Identical and adjacent coil groups are wound in opposite directions, and a conductor wire having one end connected to a U, V or W terminal is wound on the core in a first pattern followed by winding on the core in a second pattern. After that, the second pattern is wound repeatedly, the first pattern is wound on the first core, and then the fifth core skipped four in the forward direction, and then the conductor is wound The wire is wound in the forward direction on the 6th core skipped 5, then the conductor is wound in the reverse direction back on the 5th core skipped by 4, and the second pattern continues from the previous pattern. Then the conductor is wound on the 6th core skipped forward 5, then the conductor is wound on the 5th core skipped forward 4, then the conductor is wound on the 5th core skipped forward The structure is such that the conductor is wound around the sixth core, and then the conductor wire is wound back to the fifth core skipping four cores in the opposite direction.

The total number of coils may be 36n (n is an integer), and the number of coil conductors connected to the U, V and W terminals may be two or more.

According to the present invention, when the conducting wire is wound around the core from one terminal (U, V, W) toward the other terminal, the winding is partially reversed, so that a series circuit is formed. As the number increases, the voltage that can be extracted increases, and power generation efficiency can be improved more than before.

The figure which shows the structure of the three-phase alternating current generator which concerns on this invention. The figure explaining the winding order of the conductor wire of the coil connected to U terminal. The figure explaining the winding order of the conductor of the coil connected to V terminal. FIG. 4 is a diagram for explaining the winding order of the conductor wire of the coil connected to the W terminal; The figure which shows another Example.

As shown in FIG. 1, the three-phase alternator according to the present invention has a rotor 2 and a stator 3 arranged coaxially within a housing 1 . A rotating shaft 4 is arranged at the center. In the illustrated example, the rotor 2 is on the outside and the stator 3 is on the inside, but the rotor 2 may be on the inside and the stator 3 on the outside. A stator may be arranged.

In the rotor 2, six magnets 5 each having an N pole facing the stator 3 and three magnets 6 each having an S pole facing the stator 3 are alternately arranged in a ring. A gap is formed between the magnets 5 and 6 and the stator 3 .

The stator 3 has 36 coils 7 . Six of the 36 coils 7 . ing.

In this example, coils C1-C6, C13-C18, C25-C30 are right-handed and coils C7-C12, C19-C24, C31-C36 are left-handed.

FIG. 2 shows the winding order of the coil conductors, one end of which is connected to the U-terminal, in this embodiment the conductors are first wound on the first core to form coil C1, followed by coil C1 and the same coil. Winding on the sixth core of the group to form coil C6, followed by coil C6 on the twelfth core of coil group 7 adjacent in the forward direction to form coil C12, followed by coil C12 on the same returning in the opposite direction of coil group 7 to form coil C7, winding on the 13th core of the adjacent coil group in the forward direction following coil C7 to form coil C13; Following the coil C13, the coil C18 is formed by winding on the 18th core in the forward direction of the same coil group 7, and the coil C24 is formed by winding the coil C18 on the 24th core of the adjacent coil group in the forward direction. to form coil C24 followed by winding back to the 19th core of the same coil group in the opposite direction to form coil C19, followed by coil C19 in the forward direction to the 25th core of the adjacent coil group. Winding to form coil C25, winding following coil C25 on the 30th core in the forward direction of the same coil group to form coil C30, following coil C30 on the 36th core of the forward adjacent coil group. coil C36, followed by winding on the 31st core of the same coil group in the opposite direction to form coil C31, and the lead wire from coil C31 is connected to the neutral terminal (star connection ).

FIG. 3 shows the winding order of the coil wire with one end connected to the V terminal, in this embodiment the wire is first wound on the fifth core to form coil C5, followed by coil C5 in the forward direction. coil C10 is wound on the 10th core of the adjacent coil group to form coil C10, followed by coil C10 in the forward direction and wound on the 16th core of the adjacent coil group to form coil C16; Then return to the adjacent coil group in the reverse direction and wind on the 11th core to form the coil C11, and then wind on the 17th core of the adjacent coil group in the forward direction to form the coil C17. Then, after the coil C17, it is wound around the 22nd core of the forwardly adjacent coil group to form the coil C22, and after the coil C22, it is wound around the 28th core of the forwardly adjacent coil group. Forming coil C28, winding back to the 23rd core of the adjacent coil group in the reverse direction following coil C28 to form coil C23, and following coil C23, winding back to the 29th core of the adjacent coil group in the forward direction. to form coil C29, followed by coil C29 on the 34th core in the same coil group in the forward direction to form coil C34, followed by coil C34 in the adjacent coil group in the forward direction to form a coil C4, followed by winding on the 35th core of the adjacent coil group in the opposite direction following the coil C4 to form a coil C35; connect to.

FIG. 4 shows the winding order of the coil wire with one end connected to the W terminal, in this embodiment the wire is first wound on the ninth core to form coil C9, followed by coil C9 in the forward direction. coil C14 is wound on the 14th core of the adjacent coil group to form coil C14, followed by coil C14 in the forward direction and wound on the 20th core of the adjacent coil group to form coil C20, and coil C20 followed by Then return to the adjacent coil group in the reverse direction and wind on the 15th core to form the coil C15, and following the coil C15, wind on the 21st core of the adjacent coil group in the forward direction to form the coil C21. Then, after the coil C21, it is wound around the 26th core of the forwardly adjacent coil group to form the coil C26, and after the coil C26, it is wound around the 32nd core of the forwardly adjacent coil group. Forming coil C32, winding back to the 27th core of the adjacent coil group in the reverse direction following coil C32 to form coil C27, and following coil C27 to the 33rd core of the adjacent coil group in the forward direction. to form a coil C33, wound on the second core of the group of coils adjacent in the forward direction following the coil C33 to form a coil C2, and following coil C2 in the forward direction. The eighth core of the group is wound to form coil C8, the third core of the adjacent coil group in the opposite direction following coil C8 is wound to form coil C3, and the conductor from coil C3 is wound to neutral. terminal.

The winding method described above consists of a first pattern followed by a second pattern, and the second pattern is repeated. The first pattern is a pattern of jumping two forwards and back one backward, and the second pattern is a pattern of jumping three forwards and back one backward.

Specifically, in the first pattern, the conductor wound on the first core is skipped forward by four and wound on the fifth core, then skipped forward by five and wound on the sixth core. It is wound around a core, then reversed four turns and wound around a fifth core.

In the second pattern, the conductor wound on the last core of the previous pattern is wound on the sixth core, skipping 5 forwards from that core, then skipping 4 forwards, and wound on the 5th core. It is wound on the first core, then skips five forwards and is wound on the sixth core, then reverses four turns and is wound on the fifth core.

If the number of coils is 36, the second pattern is repeated twice, and if the number of coils is 72, the second pattern is repeated five times.

FIG. 5 shows another embodiment, in which, in addition to the embodiment shown above, a second lead wire is connected in parallel to the U, V and W terminals to increase the generated voltage. In the figure, the lower part of U, V, and W is the added coil.

That is, at the U terminal, first, the conductor wire is wound around the second core to form the coil C2, and after the coil C2, the conductor wire is wound around the seventh core of the adjacent coil group in the forward direction to form the coil C7, Coil C7 is followed in the forward direction by winding on the 13th core of the adjacent coil group to form coil C13, and Coil C13 is followed in the reverse direction by winding back on the adjacent coil group and winding on the 8th core to form coil C13. C8 is wound on the 14th core of the forwardly adjacent coil group following coil C8 to form coil C14, followed by coil C14 on the 19th core of the forwardly adjacent coil group. Winding to form coil C19, winding following coil C19 on the 25th core of the forwardly adjacent coil group to form coil C25, winding following coil C25 on the 20th core of the reversely adjacent coil group. winding back to the second core to form coil C20, winding in the forward direction following coil C20 on the 26th core of the adjacent coil group to form coil C26, and following coil C26 in the forward direction. The 31st core of the adjacent coil group is wound to form the coil C31, followed by the coil C31 in the forward direction to the first core of the adjacent coil group to form the coil C1, followed by the coil C1. is wound around the 32nd core of the adjacent coil group in the opposite direction to form the coil C32, and the lead from the coil C32 is connected to the neutral terminal.

At the V terminal, the conductor is first wound around the sixth core to form a coil C6, followed by winding around the eleventh core of the coil group adjacent in the forward direction to form a coil C11. followed by winding on the 17th core of the adjacent coil group in the forward direction to form coil C17; formed, followed by coil C12 and wound on the 18th core of the forwardly adjacent coil group to form coil C18, and wound on the 23rd core of the forwardly adjacent coil group following coil C18. to form a coil C23, wound on the 29th core of the coil group adjacent in the forward direction following the coil C23 to form a coil C29, and following the coil C29, the 24th core of the coil group adjacent in the reverse direction. Winding back on the core to form coil C24, winding on the 30th core of the group of coils forwardly adjacent to coil C24 to form coil C30, and forwardly adjacent to coil C30. Winding on the 35th core of the coil group to form coil C35, following coil C35 in the forward direction to forming coil C5 on the 5th core of the adjacent coil group, and following coil C5 on the reverse. A coil C36 is wound around the 36th core of the directionally adjacent coil group, and a lead from coil C36 is connected to the neutral terminal.

At the W terminal, the conductor is first wound around the 10th core to form the coil C10, followed by the coil C10 and then around the 15th core of the adjacent coil group in the forward direction to form the coil C15. Next, the coil C21 is wound on the 21st core of the adjacent coil group in the forward direction to form the coil C21. is wound on the 22nd core of the forwardly adjacent coil group following the coil C16 to form the coil C22, and is wound on the 27th core of the forwardly adjacent coil group following the coil C22. to form a coil C27, wound around the 33rd core of the coil group adjacent in the forward direction following the coil C27 to form the coil C33, and following the coil C33, the 28th core of the coil group adjacent in the reverse direction is wound. Winding back on the core to form coil C28, winding on the 34th core of the group of coils forwardly adjacent to coil C28 to form coil C34, and forwardly adjacent to coil C34. Winding on the third core of the coil group to form coil C3, followed by coil C35 in the forward direction and winding on the ninth core of the adjacent coil group in the forward direction to form coil C9, followed by coil C9 and then inverse. A fourth core of a directionally adjacent coil group is wound to form coil C4, and a lead from coil C4 is connected to the neutral terminal.

In the embodiment, the order of winding is shown when the number of coils is 36, but the number of coils may be 36n (n is an integer), such as 72 or 108.

The three-phase AC generator according to the present invention can be used as a private power generator for buildings or as a generator for automobiles.

1... housing 2... rotor 3... stator 4... rotary shaft 5, 6... magnet 7... coil (C1 to C36)
8... Coil group

Claims (3)

A three-phase alternator comprising a rotor and a stator coaxially arranged in a housing, wherein the rotor has a magnet with an N pole and a magnet with an S pole facing the stator. Six coils are alternately arranged in a ring, and the stator consists of 36 coils formed by winding conductive wires around 36 cores arranged in a ring inside the rotor. Among them, a coil group consisting of six coils is arranged so as to face each of the magnets. Each coil group has the same winding direction and adjacent coil groups have opposite winding directions. A conductor connected to one of the V or W terminals is wound on the core in a first pattern and a conductor connected at one end to one of the remaining two of the U, V or W terminals. is wound on the core in a second pattern and a conductor having one end connected to the remaining one of the U, V or W terminals is wound on the core in a third pattern,
The first pattern is wound on the first core out of the 36 cores, then wound on the sixth core skipped by four in the forward direction, and then the conductor wire is skipped by five in the forward direction. The wire is wound on the 12th core, then the wire is wound in the reverse direction skipping 4 back to the 7th core, then the wire is wound in the forward direction on the 13th core skipping 5, and then The conductor wire is wound on the 18th core skipped in the forward direction by 4, then the conductor wire is wound on the 24th core skipped in the forward direction by 5, then the conductor wire is wound on the 19th core skipped in the reverse direction by 4. The wire is wound back on the core, then the wire is wound on the 25th core skipped forward 5, then the wire is wound on the 30th core skipped 4 forward, and then the wire is wound on the 30th core skipped forward 4. The conductor is wound on the 36th core skipped 5 in the direction, then the conductor is wound back on the 31st core skipped 4 in the opposite direction,
The second pattern is wound on the 5th core and then on the 10th core skipped by 4 in the forward direction, and then the conductor is wound on the 16th core skipped by 5 in the forward direction. Then the wire is wound back to the 11th core skipped by 4 in the reverse direction, then the wire is wound to the 17th core skipped by 5 in the forward direction, then the wire is skipped by 4 in the forward direction. the conductor is then wound on the 28th core skipped 5 in the forward direction, then the conductor is wound in the reverse direction back on the 23rd core skipped by 4, Then the conductor is wound on the 29th core skipped forward 5, then the conductor is wound on the 34th core skipped forward 4, then the conductor is wound on the 4th core skipped forward 5 , then the conductor is wound back to the 35th core skipped four in the opposite direction,
The third pattern is wound on the 9th core and then on the 14th core skipped by 4 in the forward direction, and then the conductor is wound on the 20th core skipped by 5 in the forward direction. Then the wire is wound back to the 15th core skipped by 4 in the reverse direction, then the wire is wound to the 21st core skipped by 5 forward, then the wire is wound to the 21st core skipped forward by 4. the conductor is then wound on the 32nd core skipped 5 in the forward direction, then the conductor is wound in the reverse direction back on the 27th core skipped by 4, Then the wire is wound on the 33rd core skipped forward 5, then the wire is wound on the 2nd core skipped forward 4, then the wire is wound on the 8th core skipped forward 5 A three-phase alternator characterized in that the conductor is wound around a core of 1, and then the conductor is wound back to a third core skipped by four in the opposite direction . 2. A three-phase alternator according to claim 1 , wherein the number of said coils is 36n (n is an integer). 3. A three-phase alternator according to claim 1, wherein said one end of said three-phase alternator is connected to said U, V or W terminal by two conductors.

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