JPS59220057A - Magnetizing method of synchronous machine - Google Patents

Abstract

PURPOSE:To simplify the manufacture of a synchronous machine and to reduce the size of a magnetizing DC power source by energizing a DC with an armature winding after completing the assembling of the machine, thereby magnetizing a field. CONSTITUTION:A ferromagnetic unit 41a is associated in a rotor 41 in the not magnetized state, and assembled as a synchronous machine. Slots are formed at a stator 42, and armature windings are wound in the respective slots. A current from a DC power source is flowed to the windings to form magnetic fluxes, and the unit 41a is magnetized to form a permanent magnet. In this case, since a gap between the rotor 41 and the stator 41 is small, they can be efficiently magnetized.

Description

[Detailed Description of the Invention] This invention relates to a method for magnetizing a synchronous machine, and in particular, after completing the assembly of a synchronous machine, a direct current is applied to the Kaiiso thousand windings, thereby magnetizing the field (making it a permanent magnet). The present invention relates to a method of magnetizing a synchronous machine characterized by the following.

A permanent magnet is used as the field VC of a well-known small synchronous machine. For example, in a small rotating field type synchronous machine, a permanent magnet is used in the rotor.In this case, the rotor is magnetized in advance by the magnetizing device shown in Fig. 1, and then assembled into the synchronous machine. be talented

More specifically, in FIGS. 1 and 2, a rotor 31 having a ferromagnetic material 31a...
The ferromagnetic material 31a is inserted into the magnet 2, fixed and magnetized, and the ferromagnetic material 31a becomes a permanent magnet. Here, the magnetizing device 32 is a DC power source 33
It consists of a magnetizing coil 34 and a yoke 35 made to match the shape of the rotor 31. By passing a direct current through the magnetizing coil 34, a magnetic flux is created as shown by the broken line in the figure. Then, the magnetization is performed. In addition, the second
Reference numeral 36 in the figure is a positioning stand.

On the other hand, in a rotating armature type synchronous machine, the permanent magnet 7 (.
field) is used, the magnetizing device is installed in the stator 111! Furthermore, it is also possible to assemble the rotor and stator using a single permanent magnet that has been modified in a similar electrocardiographic device α.

By the way, according to the conventional magnetization method described above, the rotor,
A special magnetized bag tube with a yoke jig that matches the shape of the fixed permanent magnet or single permanent magnet is required. Furthermore, rotors and stators can be manufactured using magnetized permanent magnets,
Magnetized rotor? When assembling the stator into a synchronous machine, there is a great deal of carelessness in handling as the permanent magnets may attract magnetic material or ferrous chips from other parts, or the permanent magnets may chip when they hit other magnetic materials. There was a drawback that it was not necessary.

This invention provides a method for magnetizing a synchronous machine that eliminates the above-mentioned drawbacks, and includes a step of assembling the synchronous machine in MiJ after magnetizing the field, and a step of assembling the synchronous machine in the MiJ after magnetizing the field, and after completing the assembly of the synchronous machine, the armature is The present invention is characterized in that it consists of direct production on the winding wire and a second part that magnetizes the gd field magnet. The figure is a partial sectional view of a three-phase rotating field type synchronous machine, and the second figure is a sectional view taken along the line IV-N in FIG. 3, in which the stator side is the armature and the rotor side is the field magnet. In these figures, 41 is a rotor, and a ferromagnetic material 41 is placed on the outer W surface of the rotor.
a... is provided. Here, the ferromagnetic material 41a is assembled into the rotor 41 in an unmagnetized state and assembled as a synchronous machine. 042 is a stator, and the stator 42 is provided with 2ψ slots 1 to 24. Armature windings 43a, 43b, and 43c shown in FIG. S are wound.

For example, in Fig. wired in series. Then, the DC current supplied to the terminal U sequentially flows through each of the windings ~c4 and flows out to the terminal. Then, this direct current forms a magnetic flux shown by a broken line in Fig. 1, and magnetizes the ferromagnetic material 41a described in 1ttf.
Permanent (petrified. Scarce, winding C3~c'8.c9~5
J to 43b and 43c, each composed of 2
I wonder if you can get the same effect even if you go to work. Note that illustration of connections connecting the windings C5 to C8+cfl to CI2 is omitted. Although the above-mentioned communication was also performed by the DC IF source 44, it was performed by a pre-installed capacitor. In addition, in FIG. 3, the reference numeral 46 indicates a frame.

47 is a cover, 48 is a shaft, and 494 is a bearing.

Now, magnetize the rotor 41 as described above.
>The gap between the rotor 41 and the id setter 42 is 02m1f
Since it is as small as 1 to 70 dragons, efficient magnetization is possible, and the DC 11f source 44 can be made smaller.

Next, FIG. 6 is a connection diagram of a J-type wire in which the apertured rotor windings 43a to 43c are connected in a delta manner, and each core is connected to the apertured rotor windings 43a to 43c.
43CG; is constructed in the same manner as the embodiment described above.

Then, for example, mark 71 a direct current on the IIA terminal U-X curve.
1] If the magnetic material 41.1 is turned, the flow shown in FIG. 4 will flow, and the ferromagnetic material 41.1 can be permanently turned into stone in the same manner as in the first embodiment described above. F. Even if the other armature windings 43b and 43c are energized, the same result can be obtained.

In this way, in the above-mentioned embodiment, a DC current of 11M'r is applied only to the l-phase portion of the J-phase winding mechanism @43a to 43C.
4f, magnetization can be performed after the synchronous machine is completed.

Next, Figure 7 is a cross-section showing the configuration of a single-phase rotating field-capable synchronous switch.
FIG. Here, in the 2≠ slots 1 to 24 of the stator 42, a restraining mechanism winding gA51 consisting of a main -l coil 51a and an auxiliary coil 51b shown in Fig. g is wound. For example, in FIG. 7, the main coil 51a has slots 24→19, 23→20, 13→18, 14→1
Winding d that bends 7, 12 → 7, 11 → 8, 1 → 6, 2 → 5
, ~d8 and the Wj gravel that connects these, 1~Acts
The DC current supplied to the terminal U flows through each of the main lines d1 to d8 to the ship and flows out to the terminal The magnetic flux shown is generated, the ferromagnetic material 41a is magnetized, and the ferromagnetic material 41a is made into a permanent magnet.
The auxiliary coil 51b is located in the 71A slot 3 → 22, 16 →
21, 15 → 10, 4-19 consists of winding patterns d and ~d12 (each winding curve is connected and the illustration of 6 connections is 4 H6
It has been done. ), the disturbance '1'' between terminals V-X can produce a similar effect.

In addition, although all of the above examples of actual parts have been explained using rotating field type synchronous machines as examples, even in rotating axle type synchronous machines, after assembling the stationary + (field) without magnetizing it, The stator can be made into a permanent magnet by tracing the IK current to the child winding. It consists of the first process and the small λ process of increasing the magnetization of the magnetic field after the synchronous machine is assembled. Dedicated magnetizing device it'
& L can make the field magnet worth tin 0. With this, it is possible to miniaturize the synchronous machine's replacement wheel and the @magnetic direct)'f+E mechanism.

lA+1 Ll'ij O) l'#i 4t 7F!
Figure 4 is a hemostasis diagram showing an example of impediment in a conventional magnetizing device, Figure 2 is a sectional view taken along the line ■-■ of Figure Kai iwagata synchronized part 11jt
Figures m and φ are cross-sectional views taken along line IV-4 in Figure 3, Figure 5 is a wiring diagram when the core armature windings of the above synchronous machine are Y-connected, and Figure 6 is a diagram of the upper synchronous machine. ``Wiring diagram when the center rotor winding is connected △, Figure 7 shows the four configurations of the main parts of a single-phase rotating field type synchronous machine, ``F is a schematic diagram, and Figure 11 shows the synchronous machine. It is a wiring diagram showing the wiring of the heart armature winding.

31.41...Rotor (field), 31a, 41
a...Ferromagnetic material (permanent magnet), 43a to 43C
・・・・・・Pairing machine winding (3-phase winding), 51・・・・・・
- Heart armature winding (single-phase winding), 51a...Main coil (main winding), 51b...Auxiliary coil (m turns m)
0

Claims (1)

[Claims] il+ A method for magnetizing a synchronous machine having a field made of permanent magnets, which includes a first step of assembling the synchronous machine before magnetizing the field, and a step of assembling the synchronous machine after completing the assembly of the synchronous machine. A method for magnetizing a synchronous machine comprising the step of magnetizing the field by passing a direct current through the child winding. +21 qiJ Note 'The Kameisogo winding is a three-phase winding, and the scope of claim 1 is characterized in that the winding is a three-phase winding, and has an opening for passing direct current only to the f-phase to magnetize the field. Synchronous Xin 5 magnetizing force method. 131 +jiJkitunisosenshu winding is a single-phase winding, and its main winding bottom 7't is characterized by applying 1jJJ of direct current only to the auxiliary winding to gradually change the field (Bj). A method for magnetizing a synchronous machine according to claim f.