JPS5846854A - Pole number change three-phase armature winding - Google Patents

Abstract

PURPOSE:To obtain an armature winding with a high ratio of pole numbers and a good utilization rate of winding, by providing armature windings of single windings in the fixed number of grooves, and inverting the current of the fixed coil side forming the pole on a high speed side resulting in the formation of the pole on a low speed side. CONSTITUTION:When the pole number on a high speed side P1 is e.e. four, and the pole number on a low speed side P2 is e.g. 16, the number of grooves Z is P1+2P2, i.e. 36, the groups of three-phase windingsI, II equipped with three pairs wherein two coils are in series for each phase are provided, and a fixed coil is connected to each terminal. When forming four poles, power sources are connected to terminals U1, V1, W1 resulting in connection by short circuitting the fixed terminal. On the other hand, when forming 16 poles, power sources are connected to terminals U10, V10, W10 resulting in Y connection by shortcircuitting the fixed terminal. Thus, the current direction for the coil side of each groove is inverted with two pieces alternately at an interval of two windings for every group of three-phase windingsI, II.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a single winding (two-pole conversion three-phase 14-armature winding).
Two matters.

Conventional pole number conversion three-phase armature windings require switching of a small number of terminals with a single winding when the pole number ratio on the high-speed side and low-speed side is 1 = 2 (although it was possible to form it with two windings). When the pole number ratio is large, the number of terminals becomes very large when a single winding is performed by switching the terminals, so two sets of ゛4 armature wires are used on the high-speed side and low-speed side in the general case. ◎For this reason, in the winding work process, it is necessary to wind the high-speed side and low-speed side winding twice, and it is also necessary to separate the high-speed side and low-speed side windings for insulation. As a result, the amount of insulators increased and the winding space factor could not be maintained high.Also, regarding the operating conditions (2), in the case of high-speed operation, the winding on the low-speed side, and in the case of low-speed operation, Because the winding on the high-speed side was not used and the winding utilization rate was poor, the dimensions of the armature core became large, creating a problem in terms of downsizing the motor.

The present invention has a high speed ratio, can be formed with a single winding with a small number of terminals, can shorten the manufacturing process, has good winding utilization, and is small and inexpensive. The purpose is to provide

Hereinafter, one embodiment of the present invention will be described with reference to FIG.
The number of poles P1 on the high speed side is 4 poles, and the number P1 on the low speed side is 16 poles. The relationship is 2=Pm
+ 2 Pm, that is, 36=4+2x16.

In Figure 1 ζ:, the thin line indicates the υ phase coil, the broken line indicates the V phase coil, and the thick line indicates the W phase coil, UIIUIO, U2゜U3
O*vl, VIO, V2, V2O, Wl, Wlo
, W2, W2O/IiU phase, v phase, and W phase terminals, respectively. Among these coils, the coil side is serial number 1 → $7. +12→$8゜$3→$9. ...
......-18→1124-The one with two people is called 1st three-phase winding details 4 (I), and number 19→$25. $2
0→No.26゜＄21→$27. . . . s36 → What is included in ro 6 is the second three-phase winding group (2). The coils for one phase in each three-phase winding group are arranged in three sets of two consecutive coils, for example, U@ (two and the first three-phase winding group (
Let the set of coils in I) be a, b, c, and the set of coils in the second Sanwa winding group (6) be I, b/C/,
The connection is a-c-, I-C/ as one circuit,
Connect one end to terminal υ20, the other end to terminal U2, b-b
' is another circuit, and both ends of it are terminals υ1. UIO
Connect to. Same area 2V phase, W4@- Even if there are two, connect. The coil pitch of this winding is -1
There is no difference from the conventional 36-groove overlapping winding method that spans from 1762 to 1762.

When forming four poles with these windings, as shown in the arrow A in Fig. 1, as will be explained in detail in the operation section, the first three-way winding group (I) & two are the υ phase. The left side of the coil, i.e. $
The current direction between the two thin wire coil sides in the grooves 1 to -6 and the coil side of the thick wire in the left side of the W phase, that is, the thick wire coil side in the grooves -7 to -12. Then, move the left coil side of the V phase, that is, the coil side of the broken line in the grooves $13 to 18, in the downward Iζ direction.The right side of the coil is the opposite direction. Of course, the same applies to the second Sanwa winding group @Koji.To do this, fall rock 1: As shown, make a 1 × Δ connection, and connect the terminal υ1.
#V1. W1. (Connect two power supplies to terminal UIO and U.)
2. U3Oto V1. VIOtoV2゜V2OtoW1.
WIG W2. W2O Ul t"soit('
If you want to set tl1M to make it 16 poles, follow the line row arrow B in Figure 1.
As shown in C2, among the current directions on the coil side of the 6-groove armature winding that forms the magnetic pole on the high-speed side, the Sanwa winding group (1),
(2) 4111: Reverses the current direction of every second battery. Therefore, ≦2 is 1 knee 1x as shown in Figure 3.
Y connection, terminal υ10. V10. WIOl: 41 source connected ff1L, fi children U1 and U2. Vl and V2. WB:
W2゜Short U2O, W2O, and V2O, respectively.

Next i = Effect 6 Two explanations 0 As shown in Figure 2 1: Connect, U phase winding 1: +1.0・
V-phase winding (=-α5tW-phase winding) When a current corresponding to knee 05 is applied, the direction of the current on the side of the coil in each station is as indicated by the arrow in the line in Fig. 1. Therefore, Fig. 4 The magnetomotive force waveform becomes as shown in Figure 3, and it can be seen that 4 poles are formed.Connect 4 = as shown in Figure 3, and connect the U-phase winding to +10.V-phase winding ζ;-α5t W-phase winding ζ''- -0,54: When the corresponding current is applied, the direction of the current on the side of the coil in each groove is indicated by the line array arrow B in Figure 1, and the tip portion is reversed.
, Fig. 5 - It can be seen that 9.12 real poles and 4 virtual poles are generated as a result of the magnetomotive force waveform of 2 and 2, forming 16 poles.

It should be noted that the present invention is as described above and in the drawings (only the added embodiments (
It goes without saying that the present invention is not fixed and can be implemented with various modifications without changing the gist thereof.

As explained above, it has a high speed ratio, has a small number of terminals, and can be formed with a single winding.
It is possible to shorten the manufacturing work by one piece, improve the utilization of the windings, and provide a compact and inexpensive pole number-converted three-phase armature winding.

[Brief explanation of drawings]

Fig. 11 is a winding development diagram showing an embodiment of the pole number conversion three-phase armature winding of the present invention, Figs. FIG. 5 is a magnetomotive force waveform diagram corresponding to FIG. 92 and FIG. 3C2. No. 1 to 3... Sequential number I... 1st three-phase winding group ■
...Second three-phase winding embroidery group [Jl, U10IU2. U3O, Vl, VlG, V2
．． V2O, Wl, WlG, W2. W2O...Terminal symbol M...Inner arrow indicating current direction B...Outer arrow indicating reverse current direction

Claims (1)

[Claims] Switching the terminal with a single winding C: Pole number conversion to obtain higher speed and lower speed pole numbers In a three-phase armature winding, the number of armature grooves in which the armature winding is inserted is 2, and the number of poles on the high speed side is P1. Approximate number Pm on the low speed side
Relationship (2) Among the current directions on the coil sides of the armature windings in each groove that form the magnetic pole on the high-speed side, every two for each three-phase winding group ζ: The current direction is reversed every two. 62), pole number conversion three-phase armature winding characterized by forming a low-speed side magnetic pole◎