WO2011148527A1

WO2011148527A1 - Rotating electric machine

Info

Publication number: WO2011148527A1
Application number: PCT/JP2010/069588
Authority: WO
Inventors: 敏則田中; 信一山口; 詠吾十時; 茂夫鈴木
Original assignee: 三菱電機株式会社
Priority date: 2010-05-28
Filing date: 2010-11-04
Publication date: 2011-12-01
Also published as: JP2013165532A; TW201143259A

Abstract

Provided is a rotating electric machine capable of suppressing the occurrence of circulating current in the coil and reducing the value of no-load induced voltage applied to an inverter. The rotating electric machine comprises: a field pole (1) having a plurality of magnets (4); and an armature (2) having an armature iron core (5) including a plurality of teeth (5b) provided side by side so as to face the magnets (4) and a plurality of coils (6) provided by winding a conductive wire around the teeth (5b) in a concentrated winding form and conducting three-phase AC current. Three or more in-phase coils (6) are sequentially disposed side by side in a direction toward which the teeth (5b) are provided side by side. The three or more in-phase coils (6) sequentially disposed side by side are combined so that the voltage between both ends of each line has the same phase, forming a parallel circuit.

Description

Rotating electric machine

The present invention relates to a rotating electrical machine that is driven by a three-phase alternating current flowing.

Conventionally, there is known a permanent magnet type synchronous motor provided with a cylindrical armature and a field pole provided inside the armature and rotatable with respect to the armature. The field pole has ten magnets arranged in the circumferential direction. The armature includes an armature core including 12 teeth facing the magnet, and two windings provided on each tooth and through which a three-phase AC current flows. Three in-phase windings are arranged side by side in the circumferential direction of the armature. Three windings arranged continuously in the circumferential direction of the armature are connected in series in order to prevent the generation of circulating current in the windings (see, for example, Patent Document 1).

JP 2007-221961 A

However, no-load induced voltage is generated in the winding due to the rotation of the field pole. Since the inverter connected to the permanent magnet type synchronous motor is applied with a voltage having a value obtained by adding the value of the no-load induced voltage generated in each of the three windings connected in series, the withstand voltage of the inverter is reduced. There was a problem that it had to be enlarged.

This invention provides a rotating electrical machine that can suppress the generation of a circulating current in a winding and reduce the value of a no-load induced voltage applied to an inverter.

A rotating electrical machine according to the present invention includes a field pole having a plurality of magnets, an armature iron core including a plurality of teeth arranged so as to face the magnets, and a conductive wire wound around the teeth in a concentrated winding. And an armature having a plurality of windings through which a three-phase alternating current flows, and three or more windings of the same phase are continuously arranged in the direction in which the teeth are arranged. The three in-phase windings arranged in succession and arranged side by side are combined so that the phase of the voltage between both ends of each column is the same to form a parallel circuit.

According to the rotating electrical machine according to the present invention, three or more windings through which in-phase current flows are arranged in a row in the direction in which the teeth are arranged, and three or more windings in the same phase arranged in succession. Since the lines are combined so that the phase of the voltage between both ends of each column is the same to form a parallel circuit, generation of circulating current in the windings can be suppressed and applied to the inverter The value of the no-load induced voltage can be reduced.

It is sectional drawing which shows a cross section perpendicular | vertical to the axial direction of the permanent-magnet-type synchronous motor which concerns on Embodiment 1 of this invention. It is a wiring diagram explaining the connection of the coil | winding of FIG. It is a vector diagram which shows the voltage of the coil | winding of FIG. It is a connection diagram explaining the connection of the winding in the conventional permanent magnet type synchronous motor. It is a vector diagram which shows the voltage of the coil | winding of FIG. It is a connection diagram explaining the connection of the winding in another conventional permanent magnet type synchronous motor. It is a vector diagram which shows the voltage of the coil | winding of FIG. It is sectional drawing which shows another conventional permanent magnet type synchronous motor. It is a connection diagram explaining the connection of the winding of FIG. FIG. 10 is a vector diagram showing voltages of windings in FIG. 9. FIG. 10 is a connection diagram illustrating another connection of the winding of FIG. 9. It is a vector diagram which shows the voltage of the coil | winding of FIG. FIG. 10 is a connection diagram illustrating still another connection of the windings of FIG. 9. It is a vector diagram which shows the voltage of the coil | winding of FIG. It is an enlarged view which shows the principal part of the armature of FIG. It is a figure which shows the principal part of an armature at the time of reducing the number of turns of the winding of FIG. It is sectional drawing which shows a cross section perpendicular | vertical to the axial direction of the permanent-magnet-type synchronous motor which concerns on Embodiment 2 of this invention. It is a connection diagram explaining the connection of the winding of FIG. It is a vector diagram which shows the voltage of the coil | winding of FIG. It is a connection diagram explaining the connection of the winding in the conventional permanent magnet type synchronous motor. It is a vector diagram which shows the voltage of the coil | winding of FIG. It is a top view which shows the principal part of the permanent magnet type synchronous motor which concerns on Embodiment 3 of this invention. It is a top view which shows the principal part of the armature of FIG. It is a perspective view which shows the 1st insulator of FIG. It is a top view which shows the principal part of the armature of the other example of FIG. It is a perspective view which shows the 1st insulator of FIG. It is a top view which shows the principal part of the armature of the further another example of FIG. It is a figure which shows the number of turns of the conducting wire in each coil | winding of the permanent-magnet-type synchronous motor which concerns on Embodiment 4 of this invention. FIG. 29 is a vector diagram showing winding voltages when all the windings in FIG. 28 have the same number of turns. It is a table | surface which shows the number of turns of the coil | winding of FIG. It is a connection diagram explaining the connection of the coil | winding of the permanent-magnet-type synchronous motor which concerns on Embodiment 5 of this invention. FIG. 32 is a connection diagram illustrating connection of windings when the number of parallel connection circuits of the permanent magnet type synchronous motor of FIG. 31 is one. FIG. 32 is a connection diagram illustrating connection of windings when the number of parallel connection circuits of the permanent magnet synchronous motor of FIG. 31 is two. FIG. 32 is a connection diagram illustrating connection of windings when the number of parallel connection circuits of the permanent magnet type synchronous motor of FIG. 31 is four. It is sectional drawing which shows a cross section perpendicular | vertical to the axial direction of the permanent-magnet-type synchronous motor which concerns on Embodiment 6 of this invention. It is an enlarged view which shows the principal part of the armature of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding members and parts will be described with the same reference numerals.

Embodiment 1 FIG.
1 is a cross-sectional view showing a cross section perpendicular to the axial direction of a permanent magnet type synchronous motor according to Embodiment 1 of the present invention. In the figure, a permanent magnet type synchronous motor (rotating electric machine) includes a rotatable field pole 1 and an armature 2 provided around the field pole 1. The permanent magnet type synchronous motor is connected to an inverter (not shown).

The field pole 1 has a shaft 3 and ten magnets 4 fixed to the outer peripheral surface of the shaft 3. The magnets 4 are arranged at equal intervals in the circumferential direction of the shaft 3. Moreover, the magnet 4 is arrange | positioned so that the polarity of the adjacent magnet 4 may differ.

The armature 2 has an armature core 5 and a winding 6 through which current of each phase of three-phase alternating current flows. The armature core 5 includes a cylindrical base portion 5 a and twelve teeth 5 b that are formed to extend radially inward from the base portion 5 a and face the magnet 4. The base portion 5a is disposed concentrically with the shaft 3. The teeth 5b are arranged at equal intervals in the circumferential direction of the shaft 3. A pair of windings 6 are arranged on each tooth 5b. The winding 6 is formed by winding the conductive wire around the tooth 5b in a concentrated manner. That is, in this example, the field pole 1 has 10 magnetic poles and the armature 2 has 12 teeth.

The number of windings 6 through which the current of each phase of the three-phase alternating current flows is eight.
The names of the windings 6 through which the U-phase current flows are U11, U12, U13, U14, U21, U22, U23, and U24. The names of the windings 6 through which the V-phase current flows are V11, V12, V13, V14, V21, V22, V23, and V24. The names of the windings 6 through which the W-phase current flows are W11, W12, W13, W14, W21, W22, W23 and W24.

U11, U14, U22, U23, V12, V13, V21, V24, W12, W13, W21 and W24 have the same winding polarity (winding direction). The winding polarities of U12, U13, U21, U24, V11, V14, V22, V23, W11, W14, W22 and W23 are the same. The winding polarity of U11 and the winding polarity of U12 are opposite to each other. In FIG. 1, in order to indicate the winding polarity of each winding 6, + or-is attached to the rear part of each name.

U12 and U13 are arranged on the same tooth 5b. U11 is arrange | positioned at one teeth 5b of the pair of teeth 5b adjacent to the teeth 5b where U12 and U13 are arrange | positioned. U14 is arrange | positioned at the teeth 5b different from the teeth 5b in which U11 is arrange | positioned among the pair of teeth 5b adjacent to the teeth 5b in which U12 and U13 are arrange | positioned.

U21 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which U11 is arrange | positioned. U22 and U23 are arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which U12 and U13 are arrange | positioned. U24 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which U14 is arrange | positioned.

V11 is arranged on the tooth 5b where U14 is arranged. V12 and V13 are arranged in a tooth 5b different from the tooth 5b in which U12 and U13 are arranged, out of a pair of teeth 5b adjacent to the tooth 5b in which V11 is arranged. V14 is arrange | positioned at the teeth 5b different from the teeth 5b in which V11 is arrange | positioned among the pair of teeth 5b adjacent to the teeth 5b in which V12 and V13 are arrange | positioned.

V21 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which V11 is arrange | positioned. V22 and V23 are disposed on the tooth 5b at a position opposite to the tooth 5b on which V12 and V13 are disposed. V24 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which V14 is arrange | positioned.

W11 is arranged in the tooth 5b in which V24 is arranged. W12 and W13 are arranged in a tooth 5b different from the tooth 5b in which V22 and V23 are arranged, out of a pair of teeth 5b adjacent to the tooth 5b in which W11 is arranged. W14 is arrange | positioned at the teeth 5b in which U11 is arrange | positioned.

W21 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which W11 is arrange | positioned. W22 and W23 are arranged on the tooth 5b at a position facing the teeth 5b on which W12 and W13 are arranged. W24 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which W14 is arrange | positioned.

In other words, regarding the arrangement of the windings 6 described above, the combination of the windings 6 provided in the same tooth 5b is represented by (/), and the windings 6 in which the currents of the three-phase alternating currents flow are represented by U, V, and W. When the winding polarity of the winding 6 is represented by + and −, the winding 6 is arranged in the following order in the direction in which the teeth 5b are arranged.
(U12 + / U13 +) (U14- / V11 +) (V12- / V13-) (V14 + / W21-) (W22 + / W23 +) (W24- / U21 +) (U22- / U23-) (U24 + / V21-) (V22 + / V23 +) (V24- / W11 +) (W12- / W13-) (W14 + / U11-)
The arrangement order of the pair of windings 6 provided on the same tooth 5b may be reversed. That is, in this example, for example, U13 is disposed on the radially inner side of the shaft 3 with respect to U12, but U13 may be disposed on the radially outer side of the shaft 3 with respect to U12.

FIG. 2 is a connection diagram for explaining the connection of the winding 6 in FIG. In the figure, U11 and U14 are connected in series. U12 and U13 are connected in series. U21 and U24 are connected in series. U22 and U23 are connected in series. U11 and U14 connected in series, U12 and U13 connected in series, U21 and U24 connected in series, and U22 and U23 connected in series are connected in parallel. That is, U11 and U14 connected in series, U12 and U13 connected in series, U21 and U24 connected in series, and U22 and U23 connected in series constitute a U-phase parallel circuit. The numbers of turns of U11, U14, U21 and U24 are all the same. The numbers of turns of U12, U13, U22, and U23 are all the same.

V11 and V14 are connected in series. V12 and V13 are connected in series. V21 and V24 are connected in series. V22 and V23 are connected in series. V11 and V14 connected in series, V12 and V13 connected in series, V21 and V24 connected in series, and V22 and V23 connected in series are connected in parallel. That is, V11 and V14 connected in series, V12 and V13 connected in series, V21 and V24 connected in series, and V22 and V23 connected in series constitute a V-phase parallel circuit. The numbers of turns of V11, V14, V21 and V24 are all the same. The numbers of turns of V12, V13, V22, and V23 are all the same.

W11 and W14 are connected in series. W12 and W13 are connected in series. W21 and W24 are connected in series. W22 and W23 are connected in series. W11 and W14 connected in series, W12 and W13 connected in series, W21 and W24 connected in series, and W22 and W23 connected in series are connected in parallel. That is, W11 and W14 connected in series, W12 and W13 connected in series, W21 and W24 connected in series, and W22 and W23 connected in series constitute a W-phase parallel circuit. The numbers of turns of W11, W14, W21 and W24 are all the same. The numbers of turns of W12, W13, W22, and W23 are all the same.

Each phase is Y-connected. The number of parallel connection circuits, which is the number of columns connected in parallel for each phase of the permanent magnet synchronous motor, is four.

FIG. 3 is a vector diagram showing the voltage of the winding 6 in FIG. The voltage phases of U12 and U13 are the same because U12 and U13 are arranged in the same tooth 5b. The phase of the voltage of U11 is delayed by 30 degrees with respect to the phase of the voltage of U12 or U13. The phase of the voltage of U14 is advanced 30 degrees with respect to the phase of the voltage of U12 or U13. That is, the phase of the voltage of U11 and U14 is shifted in the opposite direction by the same angle around the phase of the voltage of U12 or U13.

Since the number of turns of U11 is equal to the number of turns of U14, the direction of the combined vector obtained by combining the voltage vector of U11 and the voltage vector of U14 is the same as the direction of the voltage vector of U12 and U13. Thereby, it is suppressed that a circulating current flows between U11 and U14 and U12 and U13 which were connected in parallel.

Similarly, the flow of circulating current is also suppressed between U21 and U24 and U22 and U23 connected in parallel. That is, in the U phase, the phase of the voltage between both ends of each column of the parallel circuit is the same, and the generation of circulating current is suppressed. Also in the V phase and the W phase, similarly to the U phase, the phase of the voltage between both ends of each column of the parallel circuit is the same, and the generation of circulating current is suppressed.

Next, the no-load induced voltage applied to the inverter will be described. In general, in an SPM motor in which a magnet is attached to the outer peripheral surface of a shaft and an embedded magnet type IPM motor in which a magnet is embedded radially inward from the outer peripheral surface of the shaft, the interlinkage magnetic flux Φ to the winding is When used, the no-load induced voltage E induced in the winding by the rotation of the field pole satisfies the following formula (1).
E =-(dΦ / dt) (1)
The interlinkage magnetic flux Φ satisfies the following formula (2) using the gap magnetic flux density B, the cross-sectional area S of the winding, and the number of turns W of the winding.
Φ = W ・ B ・ S (2)
From the above formula (1) and the above formula (2), the no-load induced voltage E satisfies the following formula (3).
E = −WS (dB / dt) (3)

Therefore, the no-load induced voltage E is proportional to the number of turns W of the winding. When designing the motor, the no-load induced voltage is determined in consideration of the power supply voltage of the inverter. For example, when the power supply voltage of the inverter is halved from V to V / 2, it is necessary to increase the number of parallel connection circuits or reduce the number of turns W of the winding in order to reduce the no-load induced voltage. There is.

4 is a connection diagram for explaining the connection of the winding 6 in the conventional permanent magnet synchronous motor, and FIG. 5 is a vector diagram showing the voltage of the winding 6 in FIG. All the in-phase windings 6 are connected in series. Therefore, the number of parallel circuit connections of this conventional permanent magnet type synchronous motor is one. In this case, since there is no circuit through which the circulating current flows, generation of the circulating current is prevented. However, since all the in-phase windings 6 are all connected in series, the no-load induced voltage applied to the inverter is larger than that in the case of the permanent magnet synchronous motor according to the first embodiment of the present invention. End up.

6 is a connection diagram for explaining the connection of the winding 6 in another conventional permanent magnet type synchronous motor, and FIG. 7 is a vector diagram showing the voltage of the winding 6 in FIG. The in-phase windings 6 are connected in parallel in two rows. Therefore, the number of parallel circuit connections of this conventional permanent magnet type synchronous motor is two. The direction of the combined vector of the voltage vectors U11, U12, U13, and U14 and the direction of the combined vector of the voltage vectors U21, U22, U23, and U24 are the same. Therefore, it is suppressed that a circulating current flows between U11, U12, U13 and U14 and U21, U22, U23 and U24 connected in parallel. However, since U11, U12, U13, and U14 are connected in series, and U21, U22, U23, and U24 are connected in series, the no-load induced voltage applied to the inverter is the same as that in the first embodiment of the present invention. Compared with the case of the permanent magnet type synchronous motor, it becomes larger.

FIG. 8 is a sectional view showing still another conventional permanent magnet type synchronous motor. In the figure, the number of teeth 5b and the number of magnets 4 are the same as those of the permanent magnet type synchronous motor according to the first embodiment of the present invention. One winding 6 is disposed on each tooth 5b. The number of windings 6 through which the current of each phase of the three-phase alternating current flows is four. The names of the windings 6 through which the U-phase current flows are U11, U12, U21, and U22. The names of the windings 6 through which the V-phase current flows are V11, V12, V21, and V22. The names of the windings 6 through which the W-phase current flows are W11, W12, W21, and W22.

The winding polarities of U11, U22, V12, V21, W12, and W21 are the same. The winding polarities of U12, U21, V11, V22, W11, and W22 are the same. The winding polarity of U11 and the winding polarity of U12 are opposite to each other. In FIG. 8, in order to indicate the winding polarity of each winding 6, + or-is added to the rear of each name.

U11 and U12 are disposed on adjacent teeth 5b. U21 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which U11 is arrange | positioned. U22 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which U12 is arrange | positioned.

V11 and V12 are arranged in adjacent teeth 5b. V21 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which V11 is arrange | positioned. V22 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which V12 is arrange | positioned.

W11 and W12 are arranged on adjacent teeth 5b. W21 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which V11 is arrange | positioned. W22 is arrange | positioned at the teeth 5b in the position which opposes the teeth 5b in which W12 is arrange | positioned.

U12 and V11 are arranged in adjacent teeth 5b. V12 and W21 are arranged on adjacent teeth 5b.

FIG. 9 is a connection diagram for explaining the connection of the winding 6 in FIG. In the figure, U11, U12, U21 and U22 are connected in series. V11, V12, V21 and V22 are connected in series. W11, W12, W21 and W22 are connected in series. Therefore, the number of parallel circuit connections of this conventional permanent magnet type synchronous motor is one. The numbers of turns of U11, U12U21, U22, V11, V12, V21, V22, W11, W12, W21 and W22 are all the same.

FIG. 10 is a vector diagram showing the voltage of the winding 6 in FIG. Since there is no circuit through which the circulating current flows in each phase, the generation of the circulating current is prevented. However, since all the in-phase windings 6 are all connected in series, the no-load induced voltage applied to the inverter is larger than that in the case of the permanent magnet synchronous motor according to the first embodiment of the present invention. End up.

FIG. 11 is a connection diagram illustrating another connection of the winding 6 in FIG. In the figure, U11 and U12 are connected in series. U21 and U22 are connected in series. U11 and U12 and U21 and U22 are connected in parallel. V11 and V12 are connected in series. V21 and V22 are connected in series. V11 and V12 and V21 and V22 are connected in parallel. W11 and W12 are connected in series. W21 and W22 are connected in series. W11 and W12 and W21 and W22 are connected in parallel. The number of parallel circuit connections of this conventional permanent magnet type synchronous motor is two.

FIG. 12 is a vector diagram showing the voltage of the winding 6 in FIG. The direction of the combined vector obtained by combining the voltage vectors of U11 and U12 is equal to the direction of the combined vector obtained by combining the voltage vectors of U21 and U22. Therefore, the circulating current is suppressed from flowing between U11 and U12 and U21 and U22 connected in parallel.

FIG. 13 is a connection diagram for explaining still another connection of the winding 6 in FIG. In the figure, U11, U12, U21 and U22 are all connected in parallel. V11, V12, V21 and V22 are all connected in parallel. W11, W12, W21 and W22 are all connected in parallel. Therefore, the number of parallel circuit connections of this conventional permanent magnet type synchronous motor is four.

FIG. 14 is a vector diagram showing the voltage of the winding 6 in FIG. U11 and U21, and U12 and U22 are out of phase with the applied voltage. Therefore, a circulating current flows between U11 and U21 and U12 and U22. In order to suppress the generation of circulating current, the number of parallel circuit connections of the permanent magnet type synchronous motor needs to be two or less.

15 is an enlarged view showing the main part of the armature 2 of FIG. 8, and FIG. 16 is a view showing the main part of the armature 2 when the number of turns of the winding 6 of FIG. 8 is reduced. The number of turns of each winding 6 is 18 turns. In order to reduce the no-load induced voltage by half while maintaining the number of parallel connection circuits of the permanent magnet type synchronous motor as one, the number of turns of each winding 6 is reduced by a factor of 1/2 according to the above equation (3). It needs to be reduced to 9 turns. However, when the number of turns is reduced by a factor of 1/2, the current flowing through each winding 6 must be increased by a factor of 2, which increases the copper loss in the winding 6 due to the increase in the current flowing through the winding 6. In order to prevent this, it is necessary to double the diameter of the conductive wire of each winding 6 by √2.

When the wire diameter of each winding 6 is doubled, the gap between adjacent conductors becomes large. As a result, the number of turns of each winding 6 cannot be 9 turns, and the number of turns of each winding 6 may have to be 8 turns. That is, it is difficult to reduce the number of turns of the winding 6 and increase the wire diameter of the conductive wire constituting the winding 6 without increasing the number of parallel circuit connections of the permanent magnet type synchronous motor.

As described above, according to the permanent magnet type synchronous motor according to the first embodiment of the present invention, three windings 6 through which in-phase current flows are arranged side by side in the direction in which teeth 5b are arranged. The three in-phase windings 6 arranged side by side are combined so that the phase of the voltage between both ends of each column is the same to form a parallel circuit. The generation of current can be suppressed and the value of the no-load induced voltage applied to the inverter can be reduced.

Also, the combination of windings 6 provided on the same tooth 5b is represented by (/), the windings 6 of each phase of the three-phase alternating current are represented by U, V, W, and the winding polarity is represented by +,-. The windings 6 are arranged in the following order in the direction in which the teeth 5b are arranged, and (U12 + / U13 +) (U14− / V11 +) (V12− / V13−) (V14 + / W21−) (W22 +) / W23 +) (W24- / U21 +) (U22- / U23-) (U24 + / V21-) (V22 + / V23 +) (V24- / W11 +) (W12- / W13-) (W14 + / U11-) and U12 + And U13 + are connected in series, V12− and V13− are connected in series, W22 + and W23 + are connected in series, U22− and U23− are connected in series, and V22 + and V23 + are connected in series. W12− and W13− are connected in series, U11− and U14− are connected in series, V11 + and V14 + are connected in series, W21− and W24− are connected in series, and U21 + and U24 + are connected in series. V21− and V24− are connected in series, W11 + and W14 + are connected in series, U12 + and U13 + are connected in parallel with U11− and U14−, and V12− and V13− are connected in parallel with V11 + and V14 +. W22 + and W23 + and W21− and W24− are connected in parallel, U22− and U23− and U21 + and U24 + are connected in parallel, V22 + and V23 + and V21− and V24− are connected in parallel, and W12 -And W13- and W11 + and W14 + are connected in parallel, In can be suppressed the occurrence of circulating currents in the windings 6, decreasing the value of no-load induced voltage applied to the inverter.

Embodiment 2. FIG.
FIG. 17 is a cross-sectional view showing a cross section perpendicular to the axial direction of a permanent magnet type synchronous motor according to Embodiment 2 of the present invention. In the figure, eight magnets 4 are arranged at equal intervals in the circumferential direction of the shaft 3. Nine teeth 5b are arranged at equal intervals in the circumferential direction of the shaft 3. One winding 6 is arranged for each tooth 5b. That is, in this example, the number of poles of the field pole 1 is 8, and the number of teeth of the armature 2 is 9.

The number of windings 6 through which the current of each phase of the three-phase AC flows is three each. The names of the windings 6 through which the U-phase current flows are U11, U12, and U13. The names of the windings 6 through which the V-phase current flows are V11, V12, and V13. The names of the windings 6 through which the W-phase current flows are W11, W12, and W13.

The winding polarities of U11, U13, V11, V13, W11 and W13 are the same. The winding polarities of U12, V12 and W12 are the same. The winding polarity of U11 and the winding polarity of U12 are opposite to each other. In FIG. 17, + or − is added to the rear of each name to indicate the winding polarity of each winding 6.

U11, U12, and U13 are continuously arranged in the direction in which the teeth 5b are arranged such that U11 and U13 sandwich U12. V11, V12, and V13 are continuously arranged in the direction in which the teeth 5b are arranged such that V11 and V13 sandwich V12. W11, W12, and W13 are continuously arranged in the direction in which the teeth 5b are arranged such that W11 and W13 sandwich W12. U13 and V11 are adjacent to each other. V13 and W11 are adjacent to each other. W13 and U11 are adjacent to each other.

FIG. 18 is a connection diagram for explaining the connection of the winding 6 in FIG. In the figure, U11 and U13 are connected in series. U11 and U13 and U12 are connected in parallel. That is, U11 and U13, and U12 constitute a U-phase parallel circuit. Each turn number of U11 and U13 is the same.

V11 and V13 are connected in series. V11 and V13 and V12 are connected in parallel. That is, V11, V13, and V12 constitute a V-phase parallel circuit. The number of turns of V11 and V13 is the same.

W11 and W13 are connected in series. W11 and W13 and W12 are connected in parallel. That is, W11, W13, and W12 form a W-phase parallel circuit. The number of turns of W11 and W13 is the same.

Each phase is Y-connected. The number of parallel connection circuits of the permanent magnet type synchronous motor according to Embodiment 2 of the present invention is two.

FIG. 19 is a vector diagram showing the voltage of the winding 6 in FIG. The phase of the voltage of U11 is delayed by 20 degrees with respect to the phase of the voltage of U12. The phase of the voltage of U13 is advanced 20 degrees with respect to the phase of the voltage of U12. That is, the phase of the voltage of U11 and U13 is shifted in the opposite direction by the same angle around the phase of the voltage of U12.

Since the number of turns of U11 is equal to the number of turns of U13, the direction of the combined vector obtained by combining the voltage vector of U11 and the voltage vector of U13 is the same as the direction of the voltage vector of U12. As a result, the circulating current is suppressed from flowing between U11 and U13 and U12 connected in parallel. That is, in the U phase, the phase of the voltage between both ends of each column of the parallel circuit is the same, and the generation of circulating current is suppressed.

In the V phase and the W phase, similarly to the U phase, the phase of the voltage between both ends of each column of the parallel circuit is the same, and the generation of circulating current is suppressed. Other configurations are the same as those in the first embodiment.

FIG. 20 is a connection diagram for explaining the connection of the winding 6 in the conventional permanent magnet type synchronous motor. In the figure, U11, U12 and U13 are connected in series. V11, V12 and V13 are connected in series. W11, W12 and W13 are connected in series. Therefore, the number of parallel connection circuits of this conventional permanent magnet synchronous motor is one.

FIG. 21 is a vector diagram showing the voltage of the winding 6 in FIG. Since there is no circuit through which the circulating current flows in each phase, the generation of the circulating current is prevented. However, since all in-phase windings 6 are all connected in series, the no-load induced voltage applied to the inverter is larger than that in the case of the permanent magnet synchronous motor according to the second embodiment of the present invention. End up.

As described above, according to the rotating electric machine according to the second embodiment of the present invention, only three windings 6 having the same phase are continuously arranged in the direction in which the teeth 5b are arranged. A pair of windings 6 located at both ends of three in-phase windings 6 arranged side by side are connected in series and located at the center of three in-phase windings 6 arranged in series. Since the winding 6 is connected in parallel with a pair of windings 6 connected in series, the generation of a circulating current in the winding 6 is suppressed with a simple configuration, and the no-load induced voltage applied to the inverter is reduced. The value can be reduced.

Embodiment 3 FIG.
FIG. 22 is a plan view showing a main part of a permanent magnet type synchronous motor according to Embodiment 3 of the present invention. In the figure, each of U11, U12, U13 and U14 is constituted by a continuous winding of a conducting wire. The winding start portion and the winding end portion of the conductive wires constituting U11, U12, U13, and U14 are connected to be conductive. A connecting wire 7 is provided in each of the portion of the conducting wire between U11 and U12 and the portion of the conducting wire between U13 and U14.

Each of U21, U22, U23 and U24 is constituted by a continuous winding of conductive wires. The winding start portion and the winding end portion of the conductors constituting U21, U22, U23, and U24 are connected to be conductive. A connection line is provided in each of the portion of the conductive wire between U21 and U22 and the portion of the conductive wire between U23 and U24.

Each of V11, V12, V13, and V14 is comprised by the continuous winding of conducting wire. The winding start portion and the winding end portion of the conducting wires constituting V11, V12, V13, and V14 are connected to be conductive. A connection line is provided on each of the conductive wire portion between V11 and V12 and the conductive wire portion between V13 and V14.

Each of V21, V22, V23 and V24 is constituted by a continuous winding of a conducting wire. The winding start portion and the winding end portion of the conductive wires constituting V21, V22, V23, and V24 are connected to be conductive. A connection line is provided in each of the conductive wire portion between V21 and V22 and the conductive wire portion between V and V24.

Each of W11, W12, W13, and W14 is comprised by the continuous winding of conducting wire. The winding start portion and the winding end portion of the conducting wires constituting W11, W12, W13, and W14 are connected to be conductive. A connection line is provided in each of the conductive wire portion between W11 and W12 and the conductive wire portion between W13 and W14.

Each of W21, W22, W23 and W24 is constituted by a continuous winding of a conducting wire. The winding start portion and the winding end portion of the conductive wires constituting W21, W22, W23, and W24 are connected to be conductive. A connection line is provided in each of the conductive wire portion between W21 and W22 and the conductive wire portion between W23 and W24.

FIG. 23 is a plan view showing a main part of the armature 2 of FIG. A first insulator 8 or a second insulator 9 is attached to each tooth 5b. The 1st insulator 8 and the 2nd insulator 9 are arrange | positioned so that it may mutually adjoin. The winding 6 is attached to the tooth 5b via the first insulator 8 or the second insulator 9.
FIG. 24 is a perspective view showing the first insulator 8 of FIG. The first insulator 8 has an insulator body 8a, a first pin 8b, a second pin 8c, and a third pin 8d. The first pin 8b, the second pin 8c, and the third pin 8d are made of metal. Therefore, the first pin 8b, the second pin 8c, and the third pin 8d have conductivity. The first pin 8b, the second pin 8c, and the third pin 8d are attached to the insulator body 8a. Further, the first pin 8 b, the second pin 8 c, and the third pin 8 d protrude from the insulator body 8 a in the axial direction of the armature 2. The 1st pin 8b and the 2nd pin 8c are arrange | positioned at the one end part about the circumferential direction of the armature 2 of the insulator main body 8a. The 1st pin 8b is arrange | positioned in the radial direction inside of the armature 2 rather than the 2nd pin 8c. The 3rd pin 8d is arrange | positioned at the other end part about the circumferential direction of the armature 2 of the insulator main body 8a. The connection line 7 is disposed on the third pin 8d.

23, the second insulator 9 includes an insulator body 9a having the same shape as the insulator body 8a of the first insulator 8, and a first pin 9b. The first pin 9b is made of metal. Therefore, the first pin 9b has conductivity. The first pin 9b is attached to the insulator body 9a. The first pin 9 b protrudes from the insulator body 9 a in the axial direction of the armature 2. The 1st pin 9b is arrange | positioned at the other end part about the circumferential direction of the armature 2 of the insulator main body 9a. That is, the first pin 9 b of the insulator body 9 a is disposed at a position adjacent to the first pin 8 b of the insulator body 8 a of the insulator 8 adjacent to the insulator 9. The connection line 7 is disposed on the first pin 9b.

Next, the procedure for winding the conductive wire around the teeth 5b will be described. First, a conducting wire is wound around the first pin 8b of the first insulator 8 on which U11 is disposed. Then, a conducting wire is wound around the insulator body 8a to form U11, and the conducting wire is further wound around the third pin 8d. Subsequently, the conductor is wound around the insulator body 9a of the second insulator 9 adjacent to the first insulator 8 around which the conductor is wound to form U12 and U13, and then wound around the first pin 9b. In this example, U13 is formed continuously with U12.

Then, the insulator body 8a of the second insulator 8 different from the second insulator 8 around which the conducting wire is already wound, out of the pair of first insulators 8 adjacent to the second insulator 9 around which the conducting wire is wound. A conductive wire is wound around to form U14, and is further wound around the second pin 8c. The conducting wire wound around the second pin 8c is again wound around the first pin 8b around which the conducting wire is wound. Thereby, each of U11, U12, U13, and U14 is comprised by the continuous winding of conducting wire, and is connected so that the winding start part and winding end part of conducting wire may be conducted. The same applies to U21, U22, U23 and U24. The same applies to the V phase and the W phase. Other configurations are the same as those in the first embodiment.

As described above, according to the permanent magnet type synchronous motor according to the third embodiment of the present invention, each of U11−, U12 +, U13 + and U14− is constituted by a continuous winding of a conducting wire, and the winding of the conducting wire is performed. The beginning portion and the end portion of the winding are connected so as to be conductive, and each of V11 +, V12−, V13− and V14 + is constituted by a continuous winding of the conducting wire, and the winding start portion and the winding end portion of the conducting wire W21−, W22 +, W23 + and W24− are each constituted by a continuous winding of a conducting wire, and the winding start portion and winding end portion of the conducting wire are conducted to each other. U21 +, U22−, U23−, and U24 + are each configured by a continuous winding of a conductor, and the winding start portion of the conductor V21−, V22 +, V23 + and V24− are each constituted by a continuous winding of the conductor, and the winding start portion and the winding end portion of the conductor are conductive. W11 +, W12−, W13− and W14 + are each constituted by a continuous winding of a conducting wire, and are connected so that a winding start portion and a winding end portion of the conducting wire are electrically connected, U11 -The portion of the lead between U12 +, the portion of the lead between U13 + and U14-, the portion of the lead between V11 + and V12-, the portion of the lead between V13- and V14 +, W21- The portion of the conductor between W22 +, the portion of the conductor between W23 + and W24−, the portion of the conductor between U21 + and U22−, the portion of the conductor between U23− and U24 +, The portion of the conductor between 21- and V22 +, the portion of the conductor between V23 + and V24-, the portion of the conductor between W11 + and W12-, and the portion of the conductor between W13- and W14 + Since the connection line 7 provided for each is further provided, the time for producing the permanent magnet type synchronous motor can be shortened.

The first insulator 8 may further include an insulating wall 8e provided on the insulator body 8a as shown in FIGS. The insulating wall 8e is disposed in the middle portion in the longitudinal direction of the tooth 5b. In the first insulator 8, windings 6 of different phases are arranged. The insulating wall 8e can prevent the windings 6 of different phases from coming into contact with each other.

Further, as shown in FIG. 27, the second insulator 9 may further include a second pin 9c provided on the insulator body 9a. In this case, as a procedure for winding the conducting wire around the tooth 5 b, first, the conducting wire is wound around the second pin 9 c of the second insulator 9. Then, a conducting wire is wound around the insulator body 9a to form U12 and U13, and the conducting wire is wound around the first pin 9b. Then, after forming U14, a conducting wire is wound around the second pin 8c of the first insulator 8 on which U14 is disposed, and further, the conducting wire is provided on the first pin 8b of the first insulator 8 on which U11 is disposed. Wrap. Here, the conducting wire is cut.

Thereafter, U22, U23 and U24 are formed in the same manner. Similarly to the U phase, the corresponding V-phase and W-phase windings 6 are formed. Then, a conducting wire is wound around the first pin 8b of the first insulator 8 provided with U11 to further form U11. Then, after winding a conducting wire around the second pin of the first insulator 8, the conducting wire is again wound around the second pin 9c of the second insulator 9 on which the conducting wire was first wound.

Thereafter, U21 is formed in the same manner. Similarly to the U-phase, the corresponding V-phase and W-phase windings 6 are formed, and the formation of the windings 6 is completed. By using this method of forming the winding, for example, when forming W14, it is possible to prevent the conductive wire between U11 and U12 from being caught.

In the third embodiment, the first insulator 8 having three pins and the second insulator 9 having one pin have been described, but the number of pins of each insulator is as follows. Not limited, you may increase / decrease according to an installation.

Embodiment 4 FIG.
FIG. 28 is a diagram showing the number of turns of the conductive wire in each winding 6 of the permanent magnet type synchronous motor according to Embodiment 4 of the present invention. In the figure, when the pair of windings 6 provided on the same tooth 5b is the same-phase winding 6, the number of turns of each winding 6 is T, and the pair of windings 6 provided on the same tooth 5b. The number of turns of each winding 6 is 2 × T / √3 when is a different-phase winding 6. Other configurations are the same as those in the first embodiment.

FIG. 29 is a vector diagram showing the voltage of the winding 6 when all the windings 6 in FIG. 28 have the same number of turns. The phase of the voltages of U11 and U14 is shifted by 30 degrees with respect to the phase of the voltages of U12 and U13. Therefore, the direction of the combined vector obtained by combining the respective voltage vectors of U11 and U14 and the direction of the voltage vector of U12 and U13 are the same.

However, when the number of turns of U11, U12, U13, and U14 is the same, the magnitude of the combined vector obtained by combining the voltage vectors of U11 and U14 is that of the combined vector obtained by combining the respective voltage vectors of U12 and U13. It will be smaller than the size. By setting the number of turns of the conductors in U11 and U14 to 2 / √3 times the number of turns of the conductors in U12 and U13, the magnitude of the combined vector obtained by combining the voltage vectors of U11 and U14, The size of the combined vector obtained by combining the respective voltage vectors is the same.

Since 2 / √3 = 1.154700, 2 / √3 is not an integer. Therefore, when actually manufacturing a permanent magnet synchronous motor, the number of turns is determined using a number close to 2 / √3. For example, if the number of turns of U12 and U13 is 10, the number of turns of U11 and U14 is 2 / (√3) × 10 = 11.54705. In this case, since U12 and U13 are connected in series, the combined vector has a size corresponding to 20 turns. On the other hand, if each of U11 and U14 is 11 turns, the size of the combined vector is 2 × 11 × cos (30) = 19.052. If each of U11 and U14 is 12 turns, the size of the combined vector is 2 × 12 × cos (30) = 2.784. Therefore, when the number of turns of U11 and U14 is set to 12, the magnitude of the combined vector of U11 and U14 becomes a value closer to the magnitude of the combined vector of U12 and U13.

FIG. 30 is a table showing the number of turns of the winding 6 in FIG. As shown in the figure, by selecting the number of turns of each winding 6 in consideration of the magnitude of the voltage vector, the difference in magnitude of the voltage vector can be reduced.

As described above, according to the permanent magnet type synchronous motor according to the fourth embodiment of the present invention, each winding in the case where the pair of windings 6 provided on the same tooth 5b are the windings 6 of the same phase. Assuming that the number of turns of the wire 6 is T, the number of turns of each winding 6 when the pair of windings 6 provided in the same tooth 5b are different-phase windings 6 is 2 × T / √3. The difference in voltage magnitude between the both ends of each column of the parallel circuit can be reduced. As a result, generation of circulating current can be suppressed.

Embodiment 5 FIG.
FIG. 31 is a connection diagram for explaining the connection of winding 6 of the permanent magnet type synchronous motor according to the fifth embodiment of the present invention. In the figure, U11, U12, U13, and U14 are connected in series in the order of U14, U11, U12, and U13. U21, U22, U23 and U24 are connected in series in the order of U24, U21, U22 and U23.

・ Current is input to U14. A switch SW1 is provided between U14 and U24. When the switch SW1 is turned on, U14 and U24 are connected.

U14 and U13 are connected via a switch SW2. When the switch SW2 is turned on, U14 and U13 are conducted.

U13 and U24 are connected via a switch SW3. When the switch SW3 is turned on, U13 and U24 are conducted.

U24 and U23 are connected via a switch SW4. When the switch SW4 is turned on, U24 and U23 are conducted.

U11 and U12 and U24 are connected via a switch SW5. When the switch SW5 is turned on, U11 and U12 are connected to U24.

The output current line 10 through which current is output is connected to U21 and U22 via the switch SW6. When the switch SW6 is turned on, U21 and U22 and the output current line 10 are conducted.

U11 and U12 and the output current line 10 are connected via a switch SW7. When the switch SW7 is turned on, U11 and U12 and the output current line 10 are conducted.

U23 and the output current line 10 are connected via a switch SW8. When the switch SW8 is turned on, U23 and the output current line 10 are brought into conduction.

32 is a connection diagram for explaining the connection of the winding 6 when the number of parallel connection circuits of the permanent magnet type synchronous motor of FIG. 31 is one. By setting the switch SW1, the switch SW2, the switch SW4, the switch SW5, the switch SW6, and the switch SW7 to the off state and the switch SW3 and the switch SW6 to the on state, the U11, U14, U12, and U13 are connected in series. U24 and U22 and U23 are connected in series. Further, U11, U12, U13, and U14 connected in series and U21, U22, U23, and U24 connected in series are connected in series.

FIG. 33 is a connection diagram for explaining the connection of the windings 6 when the number of parallel connection circuits of the permanent magnet type synchronous motor of FIG. 31 is two. The switches SW1, SW3, SW7 and SW8 are turned off, and the switches SW2, SW4, SW5 and SW6 are turned on, so that U11 and U14 are connected in parallel to U12 and U13, and U21 and U24 and U22 and U23 are connected in parallel. Furthermore, U11, U12, U13 and U14 and U21, U22, U23 and U24 are connected in series.

FIG. 34 is a connection diagram for explaining the connection of the windings 6 when the number of parallel connection circuits of the permanent magnet synchronous motor of FIG. 31 is four. By turning on the switch SW1, the switch SW2, the switch SW4, the switch SW6 and the switch SW7 and turning off the switch SW3, the switch SW5 and the switch SW8, the U11 and U14 are connected in parallel with the U12 and U13. U24 and U22 and U23 are connected in parallel. Furthermore, U11, U12, U13 and U14 and U21, U22, U23 and U24 are connected in parallel.

As described above, by switching the switch SW1, the switch SW2, the switch SW3, the switch SW4, the switch SW5, the switch SW6, the switch SW7, and the switch SW8 to the on state or the off state, between the U12 and U13 and the U11 and U14 The connection can be switched between a serial connection and a parallel connection, and the connection between U22 and U23 and U21 and U24 can be switched between a series connection and a parallel connection. , U12, U13, and U14 connected in series with U21, U22, U23, and U24 can be switched between series connection and parallel connection. The same applies to the V phase and the W phase.

As described above, according to the permanent magnet type synchronous motor according to the fifth embodiment of the present invention, the connection between U12 and U13 and U11 and U14 can be switched between series connection and parallel connection, The connection between V12 and V13 and V11 and V14 can be switched between a series connection and a parallel connection, and the connection between W22 and W23 and W21 and W24 can be switched between a series connection and a parallel connection. Yes, the connection between U22 and U23 and U21 and U24 can be switched between series connection and parallel connection, and the connection between V22 and V23 and V21 and V24 can be switched between series connection and parallel connection. The connection between W12 and W13 and W11 and W14 can be switched between a series connection and a parallel connection. It is possible to easily change the number of parallel connection circuit of formula synchronous motor. As a result, the winding 6 can be easily adapted in switching between the low-speed rotation and the high-speed rotation of the permanent magnet type synchronous motor.

The connection between U11, U12, U13 and U14 connected in series and U21, U22, U23 and U24 connected in series can be switched between series connection and parallel connection, and V11 connected in series, Connections between V21, V22, V23 and V24 connected in series with V12, V13 and V14 can be switched between series connection and parallel connection, and connected in series with W21, W22, W23 and W24 connected in series. Since the connection between W21, W22, W23 and W24 can be switched between series connection and parallel connection, the width of the parallel connection circuit number of the permanent magnet synchronous motor can be further increased. be able to. Thereby, the freedom degree of design of the coil | winding 6 can be improved. That is, at the time of mass production of the permanent magnet type synchronous motor, the winding 6 can be applied to the teeth 5b with the same equipment and the same setting.

Embodiment 6 FIG.
35 is a cross-sectional view showing a cross section perpendicular to the axial direction of a permanent magnet type synchronous motor according to Embodiment 6 of the present invention, and FIG. 36 is an enlarged view showing the main part of the armature 2 of FIG. In the figure, a first insulating material 11 and a second insulating material 12 are provided between a first insulator 8 and a second insulator 9. The first insulating material 11 is arranged extending in the radial direction of the armature 2. The first insulating material 11 is disposed between the different-phase windings 6 adjacent to each other in the circumferential direction of the armature 2. The second insulating material 12 is disposed between the different-phase windings 6 adjacent to each other in the radial direction of the armature 2.

When the wire diameter of the conducting wires constituting U12 and U13 is φa, and the wire diameter of the conducting wires constituting U11 and U14 is φb, φa> φb. Other configurations are the same as those in the first embodiment.

The space between the teeth 5b adjacent in the circumferential direction of the shaft 3 is narrowed by the first insulating material 11 and the second insulating material 12. Thereby, the effective cross-sectional area which can wind a conducting wire around the teeth 5b in the space between the teeth 5b adjacent to the circumferential direction of the shaft 3 decreases.

When the number of turns of each of U12 and U13 is 10 turns, as described in the fourth embodiment, it is necessary to set the number of turns of U11 and U14 to 12 turns in order to suppress the generation of the circulating current. is there. That is, the number of turns of U11 and U14 must be larger than the number of turns of U12 and U13.

If the wire diameter of the conductors constituting U12 and U13 is φa, and the wire diameter of the conductors constituting U11 and U14 is φb, then φa> φb, so the first insulator 8 and the second insulator 9 Even if the effective cross-sectional area in which the conductive wire can be wound around the tooth 5b is reduced by providing the first insulating material 11 and the second insulating material 12 between them, the number of turns of U11 and U14 is reduced to U12 and U13. It becomes easy to make more than the number of turns.

As described above, according to the permanent magnet type synchronous motor according to the sixth embodiment of the present invention, each winding when the pair of windings 6 provided in the same tooth 5b are the windings 6 of the same phase. The diameter of each conducting wire constituting each winding 6 in the case where the diameter of each conducting wire constituting the wire 6 is φa and the pair of windings 6 provided on the same tooth 5b are windings 6 of different phases is used. When φb is φb, since φa> φb, the pair of windings 6 provided in the same tooth 5b are provided in the same tooth 5b rather than the number of turns of the windings when the pair of windings 6 are in-phase windings. When the pair of windings 6 are different-phase windings 6, the number of turns of the windings 6 can be easily increased.

In each of the first, third, fourth, fifth, and sixth embodiments, the permanent magnet type synchronous motor in which the number of magnetic poles of the field pole 1 is 10 and the number of teeth of the armature 2 is 12 has been described. The number of magnetic poles P and the number of teeth Q of the armature 2 are expressed by P = 5 × n, Q = 6 × n, or P = 7 × n, Q, where n is an even number equal to or greater than 2. Any permanent magnet type synchronous motor represented by = 6 × n may be used.

Further, in each of the above embodiments, the electric motor is described as an example of the rotating electric machine, but a generator may be used.

In each of the above embodiments, the armature core 5 having the cylindrical base portion 5a has been described. However, the shape of the base portion 5a is not limited to the cylindrical shape. For example, an armature core having a plurality of base portions divided in the circumferential direction may be used.

In each of the above embodiments, the field pole 1 in which a plurality of magnets 4 are attached to the outer peripheral surface of the shaft 3 has been described. However, a field pole in which a ring magnet having a plurality of poles is attached may be used. .

1 field pole, 2 armatures, 3 shafts, 4 magnets, 5 armature cores, 5a base, 5b teeth, 6 windings, 7 connection lines, 8 first insulator, 8a insulator body, 8b first pin, 8c 2nd pin, 8d 3rd pin, 8e insulating wall, 9 second insulator, 9a insulator body, 9b first pin, 9c second pin, 10 output current line, 11 first insulating material, 12 Second insulating material.

Claims

A field pole having a plurality of magnets;
An armature core including a plurality of teeth provided side by side so as to face the magnet, and a plurality of windings provided by winding a conductive wire around the teeth in a concentrated winding and through which a three-phase AC current flows And an armature having
The windings of the same phase are arranged three or more consecutively in the direction in which the teeth are arranged,
A rotating electric machine characterized in that three or more of the same-phase windings arranged side by side are combined so that the phase of the voltage between both ends of each column is the same to form a parallel circuit.
The windings of the same phase are arranged side by side in a continuous manner in the direction in which the teeth are arranged,
A pair of the windings located at both ends of the windings of the same phase arranged in a row three in series, are connected in series,
The winding located at the center of the three in-phase windings arranged side by side in series is connected in parallel to a pair of windings connected in series. The rotating electrical machine described.
The number P of the field poles and the number Q of the armature teeth are expressed by P = 5 × n, Q = 6 × n, or P = 7 × n, where n is an even number equal to or greater than 2. , Q = 6 × n, and each tooth is a rotating electrical machine in which a pair of windings are disposed,
When the combination of the windings provided in the same tooth is represented by (/), the winding of each phase of the three-phase alternating current is represented by U, V, W, and the winding polarity is represented by +,- The windings are arranged in the following order or a repetition thereof in the direction in which the teeth are arranged,
(U12 + / U13 +) (U14- / V11 +) (V12- / V13-) (V14 + / W21-) (W22 + / W23 +) (W24- / U21 +) (U22- / U23-) (U24 + / V21-) (V22 + / V23 +) (V24− / W11 +) (W12− / W13−) (W14 + / U11−),
Further, the U12 + and the U13 + are connected in series, the V12− and the V13− are connected in series, the W22 + and the W23 + are connected in series, the U22− and the U23− are connected in series, The V22 + and the V23 + are connected in series, the W12− and the W13− are connected in series, the U11− and the U14− are connected in series, the V11 + and the V14 + are connected in series, and the W21 -And W24- are connected in series, U21 + and U24 + are connected in series, V21- and V24- are connected in series, W11 + and W14 + are connected in series,
Further, the U12 +, the U13 +, the U11−, and the U14− are connected in parallel, the V12−, the V13−, the V11 +, and the V14 + are connected in parallel, the W22 +, the W23 +, the W21−, and W24− is connected in parallel, U22− and U23− are connected in parallel with U21 + and U24 +, V22 + and V23 + are connected in parallel with V21− and V24−, and W12− The rotating electrical machine according to claim 1 or 2, wherein the W13-, the W11 +, and the W14 + are connected in parallel.
Each of the U11−, the U12 +, the U13 +, and the U14− is constituted by a continuous winding of the conducting wire, and is connected so that a winding start portion and a winding end portion of the conducting wire are electrically connected,
Each of the V11 +, the V12−, the V13−, and the V14 + is constituted by a continuous winding of the conducting wire, and is connected so that a winding start portion and a winding end portion of the conducting wire are electrically connected,
Each of the W21−, the W22 +, the W23 +, and the W24− is configured by continuous winding of the conductive wire, and is connected so that a winding start portion and a winding end portion of the conductive wire are electrically connected,
Each of the U21 +, the U22−, the U23−, and the U24 + is configured by a continuous winding of the conductive wire, and is connected so that a winding start portion and a winding end portion of the conductive wire are electrically connected,
Each of the V21−, the V22 +, the V23 +, and the V24− is configured by continuous winding of the conductive wire, and is connected so that a winding start portion and a winding end portion of the conductive wire are electrically connected,
Each of the W11 +, the W12−, the W13−, and the W14 + is configured by continuous winding of the conducting wire, and is connected so that a winding start portion and a winding end portion of the conducting wire are electrically connected,
A portion of the conductive wire between the U11− and the U12 +, a portion of the conductive wire between the U13 + and the U14−, a portion of the conductive wire between the V11 + and the V12−, the V13− and the A portion of the conducting wire between V14 +, a portion of the conducting wire between W21− and W22 +, a portion of the conducting wire between W23 + and W24−, and between U21 + and U22−. A portion of the conducting wire, a portion of the conducting wire between the U23− and the U24 +, a portion of the conducting wire between the V21− and the V22 +, a portion of the conducting wire between the V23 + and the V24−, And further comprising a connecting wire provided in each of the portion of the conducting wire between W11 + and W12- and the portion of the conducting wire between W13- and W14 +. The rotating electrical machine according to claim 3.
When the number of turns of each of the windings when the pair of windings provided in the same tooth is the same-phase winding is T, the pair of windings provided in the same tooth 5. The rotating electrical machine according to claim 3, wherein the number of turns of each of the windings in the case of the different-phase windings is 2 × T / √3.
The connection between the U12 + and the U13 + and the U11− and the U14− can be switched between a series connection and a parallel connection,
The connection between the V12− and the V13− and the V11 + and the V14 + can be switched between a series connection and a parallel connection,
The connection between the W22 + and the W23 + and the W21− and the W24− can be switched between a series connection and a parallel connection,
The connection between the U22− and the U23− and the U21 + and the U24 + can be switched between a series connection and a parallel connection,
The connection between the V22 + and the V23 + and the V21− and the V24− can be switched between a series connection and a parallel connection,
6. The connection between the W12− and the W13− and the W11 + and the W14 + can be switched between a series connection and a parallel connection. Rotating electric machine.
The connection between the U11−, U12 +, U13 + and U14− connected in series with the U21 +, U22−, U23− and U24 + connected in series is switched between a serial connection and a parallel connection. Is possible,
The connection between the V11 +, the V12−, the V13− and the V14 + connected in series with the V21−, the V22 +, the V23 + and the V24− connected in series is switched between a series connection and a parallel connection. Is possible,
The connection between W21−, W22 +, W23 + and W24− connected in series with W21−, W22 +, W23 + and W24− connected in series is switched between series connection and parallel connection. The rotating electrical machine according to claim 6, which is possible.
When the pair of windings provided in the same tooth is the same-phase winding, the wire diameter of each of the conductive wires constituting each winding is φa, and the pair provided in the same tooth When the wire diameter of each said conducting wire which comprises each said coil | winding in case the said coil | winding of a different phase is said coil | winding is set to (phi) b, it is (phi) a> (phi) b. The rotating electrical machine according to any one of 7.