JP5344125B2 - Winding method of detector winding and brushless type rotation detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of winding a coil for a detector, which suppresses a reduction in accuracy of detecting an angle by reducing interference of magnetic flux leaking from a rotating transformer to a stator without adding new components nor new work processes. <P>SOLUTION: In a method of winding a coil for a detector, a winding group for one phase is constructed so that a magnetic flux distribution obtained by connecting a winding group wound around fixed magnetic poles in series may follow a sine wave distribution of 2P poles, and a winding group for n phases is constructed by using a plurality of winding groups for one phase so as to obtain a sine wave magnetic flux distribution of 2P poles and n phases. Crossover wires between the fixed magnetic poles in the winding groups for one phase are so formed that a half of the crossover wires (for example, crossover wires of winding group 1) and the remaining half of the crossover wires (for examples, crossover wires of the winding group 4) are in opposite directions along the circumferential direction of a stator core and that the total length may be the same. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a winding method for a detector winding, and in particular, for a detector winding disposed in a brushless type rotation detector, a group of windings wound around each fixed magnetic pole is connected in series to provide one phase. A winding method for forming a winding group and obtaining a 2P-pole and n-phase sinusoidal magnetic flux by winding such a one-phase winding group for n phases, and a stator for magnetic flux leaking from a rotary transformer The present invention relates to a winding method that can suppress a decrease in angle detection accuracy of a brushless type rotation detector by reducing interference with the motor.

  Brushless type rotation detectors such as a brushless resolver and a brushless sync perform signal transmission using a rotary transformer instead of a brush. FIG. 10 is a cross-sectional view showing the structure of a brushless resolver as an example of a conventional brushless type rotation detector.

  In FIG. 10, the conventional brushless resolver is provided with a resolver portion and a rotary transformer in a ring-shaped case 1. The resolver unit includes a resolver stator 3 and a resolver rotor 18. The resolver stator 3 includes a stator core 15, an insulator 6 provided on the stator core 15, and a resolver stator winding wound around the insulator. It is comprised by 2. The resolver rotor 18 includes a rotor core 10 and a resolver excitation winding 9 wound around the rotor core 10.

  The rotary transformer includes a stator transformer 5 and a rotor transformer 12. The stator transformer 5 includes an outer core 8, a bobbin 7 provided inside the outer core 8, and a stator transformer winding 4 wound around the bobbin 7. Is done. The rotor transformer 12 includes an inner core 14 and a rotor transformer output winding 11 wound around the inner core 14.

  A resolver stator 3 and a stator transformer 5 are arranged side by side on the case 1 side, and a resolver rotor 18 and a rotor transformer 12 are connected to a rotating shaft (not shown) rotatably provided inside the case 1. They are arranged side by side through the holder 13. The resolver excitation winding 9 and the rotor transformer output winding 11 are connected to each other, and current supply and signal input / output to / from the resolver excitation winding 9 are performed via the rotor transformer output winding 11. The stator core 15, the rotor core 10, the outer core 8, and the inner core 14 are formed by, for example, laminating or drawing silicon steel sheets.

  In the rotary transformer used in the conventional brushless resolver configured as described above, leakage of magnetic fluxes Φ1 and Φ2 as shown in FIG. 10 occurs, which interferes with the resolver stator 15 and the resolver rotor 10, There was a problem that the angle detection accuracy was lowered.

  Conventionally, a shielding structure for a brushless type rotation detector, in which a stator magnetic shielding portion capable of magnetic shielding is provided between the stator core and the stator transformer, has been disclosed (for example, patents). Reference 1). In the brushless type rotation detector of Patent Document 1, this structure is intended to reduce the interference of the magnetic flux leaking from the rotary transformer to the stator core and the rotor core, and to suppress the decrease in angle detection accuracy. .

Japanese Patent Laying-Open No. 2005-102374

  However, the brushless type rotation detector described in Patent Document 1 has the following problems. That is, since the stator magnetic shielding part is arranged between the stator core and the stator transformer, it is necessary to secure a space for arranging the stator magnetic shielding part. As a result, the brushless type detector The dimensions become large. In addition, when the stator magnetic shielding part is a single member, there is a problem that the number of parts increases, and parts cost and assembly man-hour increase. Further, even when the stator magnetic shield is formed integrally with the case, there is a problem that the number of processing steps increases.

  The problem to be solved by the present invention is to reduce the magnetic flux leaking from the rotary transformer from interfering with the stator without requiring any additional parts or additional man-hours, except for the problems of the prior art. And it is providing the winding method of the coil | winding for detectors which can suppress the fall of an angle detection accuracy.

  The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further, while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

(1) In a winding method for a detector winding included in a brushless type rotation detector having a rotary transformer, an arbitrary number (S) of fixed magnetic poles each having magnetic pole teeth are arranged on the inner diameter side of a ring-shaped stator core. The magnetic flux distribution obtained by connecting a total of S winding groups that are projected and wound around the fixed magnetic pole in series with the arbitrary number (S) is one phase so that the sine wave distribution of 2P poles is obtained. A winding group is configured, and further, an n-phase split winding group is configured by using a plurality of the one-phase winding groups, and a 2P-pole and n-phase sinusoidal magnetic flux is obtained , The connecting wires between the fixed magnetic poles in the single-phase winding group are arranged such that half the number of connecting wires and the other half of the connecting wires are opposite to each other along the circumferential direction of the stator core, and with the total length is formed to be the same, over the number of half of the entire The formed first, after which the winding process of detector winding and forming the remaining number of jumper wires (claim 1).

(2) In the winding method for the detector winding according to (1) , a resolver is configured by using the n-phase shunt group as a two-phase shunt group of a SIN phase and a COS phase, and the SIN phase The COS phase is composed of windings provided alternately on the inner side and the outer side of the fixed magnetic pole, and each one-phase winding group of the SIN phase and the COS phase Each of the winding groups of half the number (S / 2) which bisects the winding group is wound continuously to the adjacent pole with respect to the fixed magnetic pole . A method (claim 2).

(3) In the winding method for the detector winding according to (1), a resolver is configured by using the n-phase winding group as a two-phase winding group of a SIN phase and a COS phase, and the SIN phase The COS phase is composed of windings provided alternately on the inner side and the outer side of the fixed magnetic pole, and each one-phase winding group of the SIN phase and the COS phase Each of the winding groups of half the number (S / 2) that bisects the winding group is wound continuously around the fixed magnetic pole every other pole. Line method (Claim 3).

(4) In the winding method for the detector winding according to the item (3), the winding group of the half number (S / 2) has the same number of turns in the fixed magnetic pole and the winding directions are opposite to each other. A winding method for a winding for a detector, characterized in that the winding method is constituted by a plurality of winding pairs each having a winding in a direction (Claim 4).

(5) In the winding method for the detector winding according to the item (3), the SIN phase one-phase winding group and the COS phase one-phase winding group include the number of turns in the fixed magnetic pole, A winding method for a detector winding, wherein the winding direction and the winding position are all constituted by the same combination of windings.

(6) A brushless type rotation detector provided with a rotary transformer, and an annular stator core having an arbitrary number (S) of fixed magnetic poles each having magnetic pole teeth projecting toward the inner diameter side; The one-phase winding group is configured so that the magnetic flux distribution obtained by connecting a total of S winding groups matching the arbitrary number (S) wound in series is a sine wave distribution of 2P poles. And a detection winding configured to obtain a 2P-pole and n-phase sine wave magnetic flux by using a plurality of the one-phase winding groups to form an n-phase winding group. In the one-phase winding group, the connecting wires between the fixed magnetic poles are half the whole number of connecting wires and the other half of the connecting wires along the circumferential direction of the stator core. It is formed to be opposite to each other and have the same total length, and half of the whole Connecting wire is formed first, then, a brushless type rotation detector, characterized in that the remaining number of bridge lines are formed (claim 6).

  According to the winding method for the detector winding of the present invention, it is possible to reduce the interference of the magnetic flux leaking from the rotary transformer to the stator without requiring any additional parts or additional work man-hours. A decrease in the angle detection accuracy of the rotation detector can be suppressed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, for comparison, a conventional general method for winding a detector winding will be described. FIG. 1A is a side view of a resolver stator 3a of a brushless resolver showing an example of a winding method of a conventional detector winding, and FIG. 1B is a resolver stator 3a shown in FIG. It is the fragmentary sectional view cut | disconnected by ZZ '.

  In the resolver stator 3a shown in FIG. 1 (a), twelve fixed magnetic poles 16a protrude from the inner diameter side of a ring-shaped stator core 15a, and each fixed magnetic pole 16a has a magnetic pole tooth 17a (magnetic pole tooth No. .1 to 12). In the resolver stator 3a, the detector winding is a series of winding groups (not shown) wound around the fixed magnetic poles 16a to form a one-phase winding group. By winding the winding group for two phases (one each for SIN phase and COS phase) to form a two-phase winding group, it is arranged by a winding method that obtains 2P poles and two-phase sinusoidal magnetic flux Has been.

    Table 1 shows the arrangement method of the winding groups constituting each phase of the resolver stator 3a of FIG. 1A for each fixed magnetic pole 16a. FIG. 2 is a developed view schematically showing the arrangement pattern of the winding groups arranged by the method shown in Table 1 as viewed from the inner diameter side of the stator core 15a. Here, S1 to S4, S1 ′, and S3 ′ in Table 1 and FIG. 2 are winding start / end positions S1 to S4, S1 ′, S1 ′, S3 ′, and the fixed magnetic poles 16a illustrated in FIG. S3 'is shown.

  The arrangement method of the winding group which comprises each phase is demonstrated using Table 1. FIG. First, the winding group of the SIN phase is a magnetic pole tooth no. Are sequentially wound in series connection on the corresponding fixed magnetic poles 16a in the order of 1, 2, 3, 4, 5, 6 to form half of the SIN phase single-phase winding group (S1). Starting from and ending at S1 ′). At this time, the winding position of each fixed magnetic pole 16a is determined by the magnetic pole tooth No. The fixed magnetic poles 16a corresponding to 1 to 6 are all inside the fixed magnetic pole 16a ((B) in FIG. 1B). The fixed magnetic poles 16a corresponding to 1 to 6 are all counterclockwise when viewed from the inner diameter side of the stator core 15a (CCW direction shown in FIG. 2, hereinafter simply referred to as CCW).

  Next, the winding group of the COS phase is magnetic pole tooth No. 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 2, and 3, each of which is continuously wound in series with the corresponding fixed magnetic pole 16 a and is one phase of the COS phase A shunt group is formed (starting at S2 and ending at S4). At this time, the winding position of each fixed magnetic pole 16a is determined by the magnetic pole tooth No. For each of the fixed magnetic poles 16a corresponding to 7 to 12, the inside of the fixed magnetic pole 16a ((B) in FIG. The fixed magnetic poles 16a corresponding to 1 to 6 are outside the fixed magnetic pole 16a ((F) in FIG. 1B). Further, the winding direction of each fixed magnetic pole 16a is determined by the magnetic pole tooth No. 4 to 9, each of the fixed magnetic poles 16a is clockwise (CW direction shown in FIG. 2; hereinafter simply referred to as CW) as viewed from the inner diameter side of the stator core 15a. The fixed magnetic poles 16a corresponding to 1 to 3 and 10 to 12 are CCW.

  Next, the winding group of the SIN phase is magnetic pole tooth No. 7, 8, 9, 10, 11, and 12 are sequentially wound around the corresponding fixed magnetic poles 16 a in series connection to form the other half of the SIN phase single-phase winding group. (Start from S3 ′ and end at S3). At this time, the winding position of each fixed magnetic pole 16a is determined by the magnetic pole tooth No. Each of the fixed magnetic poles 16a corresponding to 7 to 12 is outside the fixed magnetic pole 16a ((F) in FIG. 1 (b)). All the fixed magnetic poles 16a corresponding to 7 to 12 are CW. Finally, the end position S1 'and the start position S3' are connected to form a SIN phase one-phase winding group.

  In the arrangement pattern of the detector windings in the resolver stator 3a, as shown in FIG. 2, the connecting wire between the fixed magnetic poles 16a is connected to the stator core 15a in the one-phase winding group constituting each phase. They are all arranged in the same direction along the circumferential direction. For this reason, the influence of the leakage magnetic flux from the rotary transformer received by the crossover is added without being canceled and superimposed on the output signal, so that the angle detection accuracy is significantly lowered.

  In the SIN phase single-phase winding group, magnetic pole teeth No. 1 and 7, 2 and 8, 3 and 9, 4 and 10, 5 and 11, and 6 and 12 are wound around the fixed magnetic pole 16a, and the same number of turns (number of turns) are compared. In this case, the winding direction is opposite in every winding pair, but the winding length is different depending on the winding position (inner side and outer side). For this reason, the influence of the leakage magnetic flux from the rotating transformer received by this one-phase winding group is added and superimposed on the output signal without canceling the difference in winding length between windings having the same number of turns. Therefore, the angle detection accuracy further decreases.

  On the other hand, in the one-phase winding group of the COS phase, the magnetic pole tooth No. 1 and 6, 2 and 5, 3, 3 and 4, 7 and 12, 8 and 11, and 9 and 10 are compared with each other. For winding pairs, the winding direction is opposite and the winding position (and hence the winding length) is the same, so the angle detection accuracy decreases due to the difference in winding length between windings of the same number of turns. Does not occur.

  As described above, the conventional winding method has a problem that the influence of the leakage magnetic flux from the rotary transformer is different between the SIN phase and the COS phase, and the angle detection accuracy is different.

  Hereinafter, an embodiment of a winding method for a detector winding according to the present invention, which is compared with the above-described conventional example, will be described with reference to the accompanying drawings.

(First embodiment)
FIG. 3A is a side view of the resolver stator 3b of the brushless resolver for illustrating the winding method of the detector winding according to the first embodiment of the present invention, and FIG. It is the fragmentary sectional view cut | disconnected by ZZ 'of the resolver stator 3b shown to a). In FIG. 3, the same reference numerals are given to components common to the conventional resolver stator 3a shown in FIG.

  In the resolver stator 3b of FIG. 3A, twelve fixed magnetic poles 16b protrude from the inner diameter side of the annular stator core 15b, and each fixed magnetic pole 16b has magnetic pole teeth 17b (magnetic pole teeth No. 1-12). In the resolver stator 3b, the detector winding is a series of winding groups (not shown) wound around the fixed magnetic poles 16b in the same manner as the conventional example of FIG. By configuring such a one-phase winding group for two phases (one SIN phase and one COS phase) to form a two-phase winding group, a sine wave of 2P poles and two phases It is arranged by a winding method for obtaining magnetic flux.

  Table 2 shows an arrangement method of the winding group constituting each phase of the resolver stator 3b of FIG. 3A for each fixed magnetic pole 16b. FIG. 4 is a developed view schematically showing the arrangement pattern of the winding groups arranged by the method shown in Table 2 as viewed from the inner diameter side of the stator core 15b. Here, S1 to S4, S1 ′, and S3 ′ in Table 2 and FIG. 4 indicate winding start / end positions S1 to S4, S1 ′, and the like for each fixed magnetic pole 16b illustrated in FIG. S3 'is shown.

  With reference to Table 2, a method of arranging winding groups constituting each phase will be described. First, the winding group of the SIN phase is a magnetic pole tooth no. In the order of 1, 11, 9, 7, 5 and 3, the corresponding fixed magnetic poles 16b are continuously wound in series, and half of the SIN phase single-phase winding group (referred to as group 1) is formed. Formed (starting from S1 and ending at S1 ′). At this time, the winding position of each of the fixed magnetic poles 16b is the magnetic pole tooth No. The fixed magnetic poles 16b corresponding to 1, 11, 9, 7, 5, and 3 are all located inside the fixed magnetic pole 16b ((B) in FIG. 3B). Further, the winding direction of each fixed magnetic pole 16b is the same as that of the magnetic pole tooth No. Each of the fixed magnetic poles 16b corresponding to Nos. 1, 11, and 9 is clockwise (CW direction shown in FIG. 4; hereinafter simply referred to as CW) as viewed from the inner diameter side of the stator core 15b. The fixed magnetic poles 16b corresponding to 7, 5, and 3 are counterclockwise when viewed from the inner diameter side of the stator core 15b (CCW direction shown in FIG. 4, hereinafter simply referred to as CCW).

  Next, the winding group of the COS phase is magnetic pole tooth No. Are sequentially wound around the corresponding fixed magnetic poles 16b in series in the order of 10, 8, 6, 4, 2, 12, 1, 3, 5, 7, 9, and 11, respectively. A shunt group is formed (starting at S2 and ending at S4). At this time, the winding position of each of the fixed magnetic poles 16b is the magnetic pole tooth No. For each fixed magnetic pole 16b corresponding to 10, 8, 6, 4, 2, 12, the inner side of the fixed magnetic pole 16b ((B) in FIG. 3B) (this winding group is called group 2), the magnetic pole Tooth No. The fixed magnetic poles 16b corresponding to 1, 3, 5, 7, 9, and 11 are outside the fixed magnetic pole 16b ((F) in FIG. 3B) (this winding group is referred to as a group 3). . The winding method of each fixed magnetic pole 16b is as follows. For the fixed magnetic poles 16b corresponding to 10, 8, 6, 5, 7, and 9, CW, magnetic pole tooth No. The fixed magnetic poles 16b corresponding to 4, 2, 12, 1, 3, and 11 are CCW.

  Next, the winding group of the SIN phase is magnetic pole tooth No. 4, 6, 8, 10, 12, and 2 are sequentially wound in series with the corresponding fixed magnetic poles 16 b, and the other half of the SIN phase single-phase winding group (referred to as group 4). ) Is formed (starting from S3 ′ and ending at S3). At this time, the winding position of each of the fixed magnetic poles 16b is the magnetic pole tooth No. The fixed magnetic poles 16b corresponding to 4, 6, 8, 10, 12, and 2 are all outside the fixed magnetic pole 16b ((F) in FIG. 3B). Further, the winding direction of each fixed magnetic pole 16b is the same as that of the magnetic pole tooth No. For the fixed magnetic poles 16b corresponding to 4, 6, 2, CCW, magnetic pole teeth No. The fixed magnetic poles 16b corresponding to 8, 10, and 12 are set to CW.

  Finally, the end position S1 'of the group 1 and the start position S3' of the group 4 are connected to form a SIN phase one-phase winding group.

  Next, with reference to FIG. 4, the arrangement pattern of the detector windings arranged by the winding method in the present embodiment will be described.

  In the present embodiment, each of the SIN phase and COS phase one-phase winding groups is divided into half the number of winding groups (groups 1 to 2 in this embodiment) that bisect the one-phase winding group. Each of 4) is wound continuously around the fixed magnetic pole 16b every other pole. At this time, the SIN phase and the COS phase consist of windings provided so as to be alternately positioned inside and outside the fixed magnetic pole 16b. More specifically, in this embodiment, each winding constituting the SIN phase one-phase winding group and each winding constituting the COS-phase one-phase winding group are adjacent to the fixed magnetic pole 16b. In particular, as shown in FIG. 4, in the magnetic pole tooth No. 1, the SIN phase is on the inside and the COS phase is on the outside, as shown in FIG. In the magnetic pole tooth No. 2, the SIN phase is outside and the COS phase is inside, and in the magnetic pole tooth No. 3, the SIN phase is inside and the COS phase is outside again (hereinafter the same pattern is repeated). It has become.

  Further, in the winding method of the detector winding in the present embodiment, the crossover wires for the one-phase winding group of each phase are configured as follows. That is, as shown in FIG. 4, for the SIN phase, the connecting wire between the fixed magnetic poles 16b in the one-phase winding group is the connecting wire of the group 1 winding group and the group 4 winding group. It is divided into two. Then, half the number of crossover wires (one of the crossover wires of the group 1 winding group and one of the group 4 winding groups) and the other half of the crossover wires (the group 1 winding wires). The other of the connecting wire of the line group and the connecting wire of the winding group of the group 4 is opposite to each other along the circumferential direction of the stator core 16b and has the same total length. As a result, the influence of the leakage magnetic flux from the rotary transformer received by the crossover is canceled out and is not superimposed on the output signal, so that a decrease in angle detection accuracy can be suppressed.

  For the COS phase, the connecting wire between the fixed magnetic poles 16b in the one-phase winding group is divided into the connecting wire of the group 2 winding group and the connecting wire of the group 3 winding group. Half the number of crossover wires (one of the crossover wires of the group 2 winding group and the group 3 winding group) and the other half of the crossover wires (of the group 2 winding group) The other of the connecting wire and the connecting wire of the winding group of group 3) is opposite to each other along the circumferential direction of the stator core 15b and has the same total length. As a result, similarly to the SIN phase, the influence of the leakage magnetic flux from the rotary transformer received by the crossover is canceled and is not superimposed on the output signal, so that a decrease in angle detection accuracy can be suppressed.

  The winding group of each group is composed of a plurality of winding pairs composed of windings having the same number of turns (number of turns) with respect to the fixed magnetic pole 16b and the winding directions being opposite to each other. The winding positions (and hence the winding lengths) of the windings constituting each winding pair with respect to the fixed magnetic pole 16b are the same. For example, in the winding group of group 1, magnetic pole teeth No. The windings wound around the fixed magnetic pole 16b corresponding to 1 and 7, 3, 9, 5, and 11 have the same number of turns (number of turns) with respect to the fixed magnetic pole 16b. Are compared with each other, the winding direction is the opposite direction and the winding position is the same (in this case, inside). Therefore, the influence of the leakage magnetic flux from the rotary transformer received by each winding is not canceled by the windings having the same number of turns and is not superimposed on the output signal, so that a decrease in angle detection accuracy can be suppressed. Since the other groups (group 2, group 3, group 4) have the same configuration, the same effects can be obtained.

  Further, the SIN phase one-phase winding group and the COS-phase one-phase winding group are constituted by a combination of windings in which the number of turns, the winding direction, and the winding position of the fixed magnetic pole 16b are all the same. Has been. In other words, each winding constituting the SIN phase one-phase winding group and each winding constituting the COS-phase one-phase winding group have the same number of turns, winding direction, and winding position. The windings correspond to one to one. Specifically, in the present embodiment, the SIN phase single phase winding group (1 to 6, 19 to 24 in winding order) and the COS phase single phase winding group (7 to 18 in winding order) are: 1 and 7, 2 and 8, 3 and 9, 4 and 10, 5 and 11, 6 and 12, 13 and 19, 14 and 20, 15 and 21, 16 and 22, 17 and 23, 18 and 24, respectively Are the same for all of the number of windings, the winding direction, and the winding position. As a result, there is no difference between the SIN phase and the COS phase with respect to the influence of the leakage magnetic flux from the rotary transformer received by each one-phase winding group, so that good detection angle accuracy is obtained.

(Second Embodiment)
Next, a second embodiment of the winding method for the detector winding according to the present invention will be described. FIG. 5A is a side view of a resolver stator 3c of a brushless resolver for illustrating a winding method of a detector winding according to the second embodiment of the present invention, and FIG. It is the fragmentary sectional view cut | disconnected by ZZ 'of the resolver stator 3c shown to a). In FIG. 5, the same reference numerals are given to components common to the resolver stator 3 b shown in FIG. 3.

  In the resolver stator 3c of FIG. 5A, twelve fixed magnetic poles 16c protrude from the inner diameter side of the annular stator core 15c, and each fixed magnetic pole 16c has a magnetic pole tooth 17c (magnetic pole tooth No. 1) at its tip. 1-12). In the resolver stator 3c, the detector winding is a series of windings (not shown) wound around the fixed magnetic poles 16c connected in series like the resolver stator 3b of FIG. The two-phase winding group and the two-phase winding group are formed by winding the one-phase winding group into two phases (one each of the SIN phase and the COS phase) to form a two-phase winding group. They are arranged by a winding method for obtaining a sinusoidal magnetic flux.

  Table 3 shows an arrangement method of the winding group constituting each phase of the resolver stator 3c of FIG. 5A for each fixed magnetic pole 16c. FIG. 6 is a developed view schematically showing the arrangement pattern of the winding groups arranged by the method shown in Table 3 as viewed from the inner diameter side of the fixed core 15c. Here, S1 to S4 and S1 ′ to S4 ′ in Table 3 and FIG. 6 are winding start / end positions S1 to S4 and S1 ′ to S1 ′ to S4 ′ shown in FIG. S4 'is shown.

  With reference to Table 3, a method of arranging winding groups constituting each phase will be described. First, the winding group of the SIN phase is a magnetic pole tooth no. 1, 2, 3, 4, 5 and 6 are wound in series on the corresponding fixed magnetic poles 16c in series to form a half of the SIN phase single-phase winding group (referred to as group 1). (Starting from S1 and ending at S1 ′). At this time, the winding position of each fixed magnetic pole 16c is the magnetic pole tooth No. The fixed magnetic poles 16c corresponding to 1, 2, 3, 4, 5 and 6 are all inside the fixed magnetic pole 16c ((B) in FIG. 5B). No. The fixed magnetic poles 16c corresponding to 1, 2, 3, 4, 5, and 6 are all counterclockwise when viewed from the inner diameter side of the stator core 15c (CCW direction shown in FIG. 6; hereinafter simply referred to as CCW). .

  Next, the winding group of the COS phase is magnetic pole tooth No. 4, 5, 6, 7, 8, and 9, each of which is continuously wound in series with the corresponding fixed magnetic pole 16 c, and half of the COS phase single-phase winding group (referred to as group 2). Formed (starting at S2 and ending at S2 ′). At this time, the winding position of each fixed magnetic pole 16c is the magnetic pole tooth No. For each of the fixed magnetic poles 16c corresponding to 4, 5, and 6, the outside of the fixed magnetic pole 16c ((F) in FIG. 5B), the magnetic pole teeth No. Each of the fixed magnetic poles 16c corresponding to 7, 8, and 9 is on the inner side of the fixed magnetic pole 16c ((B) of FIG. 5B). All the fixed magnetic poles 16c corresponding to 4, 5, 6, 7, 8, and 9 are CCW.

  Next, the winding group of the COS phase is magnetic pole tooth No. 3, 2, 1, 12, 11, and 10, and the other half of the COS phase single-phase winding group (group 3 and Are called) (starting from S4 ′ and ending at S4). At this time, the winding position of each fixed magnetic pole 16c is the magnetic pole tooth No. For each of the fixed magnetic poles 16c corresponding to 3, 4, and 1, the outside of the fixed magnetic pole 16c ((F) in FIG. 5B), the magnetic pole teeth No. Each of the fixed magnetic poles 16c corresponding to 12, 11, and 10 is on the inner side of the fixed magnetic pole 16c ((B) in FIG. 5B). The fixed magnetic poles corresponding to 3, 2, 1, 12, 11, and 10 are all clockwise when viewed from the inner diameter side of the stator core 15c (CW direction shown in FIG. 6; hereinafter, simply referred to as CW).

  Next, the winding group of the SIN phase is magnetic pole tooth No. In the order of 12, 11, 10, 9, 8, and 7, the corresponding fixed magnetic pole 16c is continuously wound in series connection, and the other half of the SIN phase single-phase winding group (group 4 and Are called) (starting from S3 ′ and ending at S3). At this time, the winding position of each fixed magnetic pole 16c is the magnetic pole tooth No. The fixed magnetic poles 16c corresponding to 12, 11, 10, 9, 8, and 7 are all outside the fixed magnetic poles 16c ((F) in FIG. 5B). No. All the fixed magnetic poles 16c corresponding to 12, 11, 10, 9, 8, and 7 are CW.

  Finally, the end position S1 ′ of group 1 and the start position S3 ′ of group 4 are connected to form a single-phase winding group of SIN phase, and the end position S2 ′ of group 2 and the start position S4 ′ of group 3 are formed. Are connected to form a one-phase winding group of the COS phase.

  Next, with reference to FIG. 6 and FIG. 7, the arrangement pattern of the detector windings arranged by the winding method in this embodiment will be described. Here, FIG. 7 is a diagram showing the crossover path in the winding group disposed in the resolver stator 3c, where (a) is the SIN phase crossover path and (b) is the COS phase. The crossover route is shown.

  As shown in FIG. 6, in the present embodiment, the number of halves of the SIN phase and the COS phase for each one-phase winding group is half that of the one-phase winding group (six in this embodiment). Each of the winding groups (groups 1 to 4) is wound continuously around the fixed magnetic pole 16c to the adjacent pole, and the divided winding groups are in-phase (group 1 and group 4, group 2 and group). Each one-phase winding group is configured by connecting in 3). At this time, the SIN phase and the COS phase consist of windings provided so as to be alternately positioned inside and outside the fixed magnetic pole 16c. Specifically, in the present embodiment, the SIN-phase single-phase winding group and the COS-phase single-phase winding group are alternately positioned inside and outside the fixed magnetic pole 16c for each half of the fixed magnetic poles 16c. Specifically, as shown in FIG. 6, in the magnetic pole teeth No. 1 to 6, the SIN phase is the inside and the COS phase is the outside, and in the magnetic pole teeth No. 7 to 12, the SIN phase Is an arrangement pattern in which the COS phase is on the inside and the COS phase is on the inside.

  Further, in the winding method of the detector winding in the present embodiment, the crossover of the one-phase winding group of each phase is configured as follows. That is, as shown in FIG. 6, for the SIN phase, the connecting wire between the fixed magnetic poles 16c in the one-phase winding group is from the starting position S1 to the ending position S1 ′ that is the connecting wire of the group 1 winding group. Is formed by connecting the connecting wire (corresponding to the path A1 in FIG. 7A) formed between the fixed magnetic poles 16c and the end position S1 ′ of the group 1 and the start position S3 ′ of the group 4. Crossover wire (corresponding to the route B1 in FIG. 7A) (hereinafter referred to as “crossover wire belonging to group 1”) and the start position S3 ′ which is the crossover of the winding group of group 4 to the end position S3 A crossover line formed between the fixed magnetic poles 16c (corresponding to the path A1 ′ in FIG. 7A) and a crossover formed from the end position S3 of the group 4 to the start position S1 of the group 1 which is the output position. Line (path B1 in FIG. 7A) Considerable) (hereinafter, which is divided into as belonging connecting wire) to the group 4.

  The connecting wire (path A1) of the winding group of group 1 and the connecting wire (path A1 ′) of the winding group of group 4 are opposite to each other along the circumferential direction of the stator core 15c and have a length. The crossover line (path B1) formed from the end position S1 ′ to the start position S3 ′ and the crossover line (path B1 ′) formed from the end position S3 to the start position S1 are also fixed. Opposite to each other along the circumferential direction of the child core 15c, the total length is the same. Therefore, also in this embodiment, about the SIN phase single-phase winding group, the number of crossover lines (one of the crossover lines belonging to group 1 and 4) and the remaining number Half of the crossover lines (the crossover line belonging to group 1 and the crossover line belonging to group 4) are opposite to each other along the circumferential direction of the stator core 15c and have the same total length. is there. As a result, in all the SIN phase paths, the influence of the leakage magnetic flux from the rotary transformer received by the crossover is canceled out and is not superimposed on the output signal, so that a decrease in angle detection accuracy can be suppressed.

  For the COS phase, each fixed magnetic pole is connected between the start position S2 and the end position S2 ′ where the connecting line between the fixed magnetic poles 16c in the one-phase winding group is the connecting line of the group 2 winding group. 16c (corresponding to the path A2 in FIG. 7B) and the connecting line formed by connecting the end position S2 ′ of the group 2 and the start position S4 ′ of the group 3 (FIG. 7 ( b) (corresponding to the path B2) (hereinafter referred to as a “crossover wire belonging to group 2”) and the fixed magnetic pole 16c between the start position S4 ′ and the end position S4, which are crossover lines of the group 3 winding group. Crossover lines formed between them (corresponding to the path A2 ′ in FIG. 7B) and the crossover lines formed from the end position S4 of the group 3 to the start position S2 of the group 2 that is the output position (FIG. 7B) (Corresponding to route B2 ') It has been divided into two parts as belonging connecting wire) to flop 3.

  The connecting wire (path A2) of the winding group of group 2 and the connecting wire (path A2 ′) of the winding group of group 3 are opposite to each other along the circumferential direction of the stator core 15c and have a length. The crossover line (path B2) formed from the end position S2 ′ to the start position S4 ′ and the crossover line (path B2 ′) formed from the end position S4 to the start position S2 are also fixed. Opposite to each other along the circumferential direction of the child core 15c, the total length is the same. Therefore, also in the present embodiment, about the COS phase one-phase winding group, the number of crossover wires (one of the crossover wires belonging to group 2 and group 3) and the remaining half of the whole number Half the number of crossover lines (the crossover line belonging to group 2 and the crossover line belonging to group 3) are opposite to each other along the circumferential direction of the stator core 15c and have the same total length. is there. As a result, in all the paths of the COS phase, the influence of the leakage magnetic flux from the rotary transformer received by the crossover is canceled and is not superimposed on the output signal. Can be suppressed.

(Third embodiment)
Next, a third embodiment of the winding method of the present invention will be described.
FIG. 8A is a side view of the resolver stator 3d of the brushless resolver for illustrating a winding method of the detector winding according to the third embodiment of the present invention, and FIG. It is the fragmentary sectional view cut | disconnected by ZZ 'of the resolver stator 3d shown to a). In FIG. 8, the same components as those of the resolver stator 3b shown in FIG.

  In the resolver stator 3d of FIG. 8A, twelve fixed magnetic poles 16d protrude from the inner diameter side of the annular stator core 15d, and each fixed magnetic pole 16d has a magnetic pole tooth 17d (magnetic pole tooth No. 1-12). In the resolver stator 3d, the detector windings are connected in series to winding groups (not shown) wound around the fixed magnetic poles 16d in the same manner as the resolver stator 3b in FIG. A wire group is formed, and such a one-phase winding group is wound in two phases (a SIN phase and a COS phase are each one phase) to form a two-phase winding group. The winding method is used to obtain a sinusoidal magnetic flux.

  Table 4 shows the arrangement method of the winding groups constituting each phase of the resolver stator 3d in FIG. 8 for each fixed magnetic pole 16d. FIG. 9 is a developed view schematically showing the arrangement pattern of the winding groups arranged by the method shown in Table 4 as viewed from the inner diameter side of the stator core 15d. Here, S1 to S4 and S1 ′ to S4 ′ in Table 4 and FIG. 9 indicate winding start / end positions S1 to S4 and S1 ′ to S1 ′ to S4 ′ illustrated in FIG. S4 'is shown.

  With reference to Table 4, an arrangement method of the winding groups constituting each phase will be described. First, the winding group of the SIN phase is a magnetic pole tooth no. 1, 2, 3, 4, 5 and 6 are sequentially wound around the corresponding fixed magnetic poles 16d in series, and half of the single-phase winding group (referred to as group 1) of the SIN phase is wound. Formed (starting from S1 and ending at S1 ′). The winding position of each fixed magnetic pole 16d is the magnetic pole tooth No. The fixed magnetic poles corresponding to 1, 2, 3, 4, 5, and 6 are all inside the fixed magnetic pole 16d ((B) in FIG. 8B). . The fixed magnetic poles corresponding to 1, 2, 3, 4, 5, and 6 are all counterclockwise when viewed from the inner diameter side of the stator core 15d (CCW direction in FIG. 9, hereinafter simply referred to as CCW).

  Next, the winding group of the COS phase is magnetic pole tooth No. 4, 5, 6, 7, 8, and 9, each of the corresponding fixed magnetic poles 16 d is continuously wound in series, and half of the COS phase single-phase winding group (referred to as group 2) is formed. Formed (starting at S2 and ending at S2 ′). At this time, the winding position of each fixed magnetic pole 16d is set to the magnetic pole teeth 17dNo. For each of the fixed magnetic poles 16d corresponding to 4, 5, and 6, the outside of the fixed magnetic pole 16d ((F) in FIG. 8B), the magnetic pole teeth No. The fixed magnetic poles 16d corresponding to 7, 8, and 9 are inside the fixed magnetic pole 16d ((B) in FIG. 8B). All the fixed magnetic poles corresponding to 4, 5, 6, 7, 8, and 9 are CCW.

  Next, the COS-phase winding group) 10, 11, 12, 1, 2, and 3, and the other half of the one-phase winding group of the COS phase (referred to as group 3). ) Is formed (starting from S4 and ending at S4 ′). The winding position of each fixed magnetic pole 16d is the magnetic pole tooth No. For each of the fixed magnetic poles 16d corresponding to 10, 11, and 12, the inside of the fixed magnetic pole 16d ((B) in FIG. 8B), the magnetic pole teeth No. Each of the fixed magnetic poles 16d corresponding to 1, 2, and 3 is outside the fixed magnetic pole 16d ((F) in FIG. 8B). The fixed magnetic poles 16d corresponding to 10, 11, 12, 1, 2, 3 are all CCW.

  Next, the winding group of the SIN phase is magnetic pole tooth No. 7, 8, 9, 10, 11, and 12, and the other half of the SIN phase single-phase winding group (referred to as group 4). ) Is formed (starting from S3 and ending at S3 ′). The winding position of each fixed magnetic pole 16d is the magnetic pole tooth No. The fixed magnetic poles 16d corresponding to 7, 8, 9, 10, 11, and 12 are all outside the fixed magnetic poles 16d ((F) in FIG. 8B). No. All the fixed magnetic poles 16d corresponding to 7, 8, 9, 10, 11, 12 are CCW.

  Finally, the end position S1 ′ of group 1 and the end position S3 ′ of group 4 are connected to form a single-phase winding group of SIN phase, and the end position S2 ′ of group 2 and the end position S4 ′ of group 3 are formed. Are connected to form a one-phase winding group of the COS phase.

  In the winding method of the detector winding in the present embodiment, the one-phase winding group is divided into two for each of the SIN phase and COS phase winding groups, as in the second embodiment described above. Each of the half (six in this embodiment) winding groups (groups 1 to 4) is continuously wound around the fixed magnetic pole 16d to the adjacent pole, and the divided winding groups are the same. By connecting the phases to each other (group 1 and group 4, group 2 and group 3), each one-phase winding group is configured. At this time, the SIN phase and the COS phase are the same as in the second embodiment in that the SIN phase and the COS phase are composed of windings provided so as to be alternately positioned inside and outside the fixed magnetic pole 16d.

  When this embodiment is compared with the above-described second embodiment, in the winding group of group 3 and the winding group of group 4 in each embodiment, the winding order of winding the winding group around the fixed magnetic pole and The difference is that the winding direction of each winding constituting the winding group is reversed, and the other points are the same. Then, the group 1 and the group 4 constituting the SIN phase one-phase winding group are connected at the end position S1 ′ of the group 1 and the end position S3 ′ of the group 4, and the one-phase winding group of the COS phase is connected. By connecting the group 2 and the group 3 to be configured at the end position S2 ′ of the group 2 and the end position S4 ′ of the group 3, as a result, the same connection state as that of the second embodiment is obtained.

  Accordingly, the crossover path in the winding group disposed in the resolver stator 3d is the same as the path shown in FIG. 7, and as in the second embodiment, the entire SIN phase path and the COS In all the phase paths, the influence of the leakage magnetic flux from the rotary transformer received by the crossover is canceled and is not superimposed on the output signal, so that a decrease in angle detection accuracy can be suppressed.

As mentioned above, although this invention was demonstrated by preferable embodiment, this invention is not limited to embodiment mentioned above, A various deformation | transformation and application are possible within the range of the technical idea of this invention.
For example, in the above-described embodiment, the n-phase shunt group is formed by winding the one-phase shunt group into two phases (one SIN phase and one COS phase), However, the present invention is not limited to this phase configuration. The rotation detector to which the winding method of the detector winding according to the present invention is applied is not limited to the brushless resolver, and can be applied to a rotation detector such as a brushless sync if it is a brushless type. It is.

  In the above embodiment, the number of fixed magnetic poles of the stator core is 12. However, the number is not limited to this number, and other numbers may be used. Furthermore, specific embodiments such as winding order, winding direction, and winding position for each fixed magnetic pole are not limited to the above-described embodiments, and various embodiments are possible without departing from the spirit of the present invention. Can be changed.

(A) is a side view of a resolver stator of a brushless resolver showing an example of a winding method of a conventional detector winding, and (b) is cut along ZZ ′ of the resolver stator shown in (a). FIG. FIG. 3 is a development view schematically showing an arrangement pattern of winding groups arranged by a conventional winding method as viewed from the inner diameter side of the stator core shown in FIG. 1. (A) is a side view of the resolver stator of the brushless resolver showing the winding method of the detector winding according to the first embodiment of the present invention, (b) is a Z of the resolver stator shown in (a) It is the fragmentary sectional view cut | disconnected by -Z '. FIG. 4 is a development view schematically showing an arrangement pattern of winding groups arranged by the winding method according to the first embodiment of the present invention as viewed from the inner diameter side of the stator core shown in FIG. 3. (A) is a side view of the resolver stator of the brushless resolver showing the winding method of the detector winding according to the second embodiment of the present invention, (b) is a Z of the resolver stator shown in (a) It is the fragmentary sectional view cut | disconnected by -Z '. FIG. 6 is a development view schematically showing an arrangement pattern of winding groups arranged by a winding method according to a second embodiment of the present invention as viewed from the inner diameter side of the stator core shown in FIG. 5. FIGS. 7A and 7B are diagrams illustrating a crossover path in a winding group disposed in the resolver stator illustrated in FIG. 6, wherein FIG. 7A is a SIN phase crossover path, and FIG. 7B is a COS phase crossover path. FIG. (A) is a side view of a resolver stator of a brushless resolver showing a winding method of a detector winding according to a third embodiment of the present invention, and (b) is a Z of the resolver stator shown in (a). It is the fragmentary sectional view cut | disconnected by -Z '. It is. FIG. 10 is a development view schematically showing an arrangement pattern of winding groups arranged by the winding method according to the third embodiment of the present invention as seen from the inner diameter side of the stator core shown in FIG. 8. It is sectional drawing which shows the structure of a brushless resolver as an example of the conventional brushless type rotation detector.

Explanation of symbols

3a, 3b, 3c, 3d: resolver stator, 15a, 15b, 15c, 15d: stator core, 16a, 16b, 16c, 16d: fixed magnetic pole, 17a, 17b, 17c, 17d: magnetic pole teeth, B: winding Winding position (inside), F: winding position (outside), S1 to S4, S1 ′ to S4 ′: winding start / end position of winding group

Claims (6)

In the winding method of the detector windings included in the brushless type rotation detector having a rotary transformer, an arbitrary number (S) of fixed magnetic poles each having magnetic pole teeth are projected toward the inner diameter side of the annular stator core, One-phase winding group so that the magnetic flux distribution obtained by connecting a total of S winding groups corresponding to the arbitrary number (S) wound around the fixed magnetic pole in series becomes a sine wave distribution of 2P poles. constitute further forms a n-phase winding group by using a plurality of the one phase winding group, and configured to obtain a sinusoidal magnetic flux of 2P poles and n-phase, the one phase The connecting wires between the fixed magnetic poles in the winding group are formed such that the entire number of connecting wires and the remaining number of connecting wires are opposite to each other along the circumferential direction of the stator core and have a length. with total is formed so that the same, previously the number of jumper wires half of the entire Formed, subsequently, the winding method of the detector winding and forming the remaining number of jumper wires. The n-phase shunt group is configured as a two-phase shunt group of a SIN phase and a COS phase, and the resolver is configured so that the SIN phase and the COS phase are alternately positioned inside and outside the fixed magnetic pole. Each of the SIN phase and the COS phase of each one-phase winding group, each of which is half the number of winding groups (S / 2) that bisects the one-phase winding group. The winding method for a detector winding according to claim 1 , wherein the winding is continuously wound around an adjacent pole with respect to the fixed magnetic pole . The n-phase shunt group is configured as a two-phase shunt group of a SIN phase and a COS phase, and the resolver is configured so that the SIN phase and the COS phase are alternately positioned inside and outside the fixed magnetic pole. Each of the SIN phase and the COS phase of each one-phase winding group, each of which is half the number of winding groups (S / 2) that bisects the one-phase winding group. the winding method of detector winding according to claim 1, characterized in that wound continuously in one pole every respect to the fixed pole.   The half number (S / 2) winding group is composed of a plurality of winding pairs each including windings having the same number of turns in the fixed magnetic pole and opposite in winding direction. The winding method of the winding for detectors of Claim 3 characterized by these.   The SIN-phase single-phase winding group and the COS-phase single-phase winding group are configured by a combination of windings in which the number of turns, the winding direction, and the winding position of the fixed magnetic pole are all the same. The winding method of the winding for detectors of Claim 3 characterized by the above-mentioned. A brushless type rotation detector with a rotary transformer,
A ring-shaped stator core in which an arbitrary number (S) of fixed magnetic poles each having magnetic pole teeth are projected to the inner diameter side;
One-phase winding so that the magnetic flux distribution obtained by connecting a total of S winding groups corresponding to the arbitrary number (S) wound around the fixed magnetic pole in series is a sine wave distribution of 2P poles. And a detection winding configured to obtain a 2P-pole and n-phase sinusoidal magnetic flux by using the plurality of one-phase winding groups to form an n-phase winding group. And
In the one-phase winding group, the connecting wires between the fixed magnetic poles have half the whole number of connecting wires and the other half the number of connecting wires facing each other along the circumferential direction of the stator core, And the total number of the crossovers is formed first, and then the remaining number of crossovers is formed after that. Brushless type rotation detector.

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