JPS62166756A - Magneto generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a magnet generator, and particularly to a rotor in which a plurality of magnets are arranged on the inner peripheral surface of a cylindrical yoke.

In an epidermal magnet generator including a stator in which a power generation winding is wound around each armature core having a plurality of magnetic poles facing the magnets of the rotor, the stator has three-phase magnetic poles. This invention relates to a magnet generator that is capable of outputting three-phase and single-phase outputs by providing an armature core with a single-phase magnetic pole configuration in a part of the stator.

(Problems to be Solved by the Prior Art and the Invention) In general, in an external rotor type magnet generator, magnets 2, 2, . ... (8 poles in the example shown in FIG. 4), armature cores 3, 3 . A so-called three-phase magnetic pole configuration is known in which the number of poles is 1.5 times (12 poles in the example shown in FIG. 4).

2 Although not shown, the armature core 3°3,
... are divided into groups of three, and a three-phase power generation winding is wound around each of the three armature cores divided into groups.

For example, when an engine ignition voltage is required, a method has been taken in which a magnet generator for high voltage output is installed in addition to a magnet generator with a three-phase magnetic pole configuration.

However, it goes without saying that this conventional means does not.

There were undesirable problems such as increased cost and increased weight.

Therefore, consideration has been given to means of obtaining a high voltage by connecting the power generation windings (not shown) wound around the three grouped armature cores into a single-phase connection. That is, the output voltage in this case is as shown in the vector diagram shown in FIG. '', the output voltage of the three single-phase connected power generation windings is ``
2". However, in the case of such a configuration, the output voltage is "2" with three power generation windings, resulting in poor efficiency.

(Means for Solving the Problems) The present invention aims to solve the above problems and demands.
A rotor including a plurality of magnets arranged circumferentially along the inner peripheral surface of a cylindrical yoke.

In an epidermal magnet generator including a stator in which a power generation wire is wound around each armature core having a plurality of magnetic poles facing the magnets of the rotor, the stator has a three-phase An armature core with a magnetic pole configuration and an armature core with a single-phase magnetic pole configuration are provided in a part of the stator, and a single-phase AC voltage is output by a power generation winding wound around the armature core with a single-phase magnetic pole configuration. The power generating winding is wound around the armature core having the three-phase magnetic pole configuration, and is configured to output a three-phase alternating current voltage. This will be explained below with reference to one drawing.

(Embodiment) FIG. 1 is a structural diagram of an embodiment of the present invention, and FIG. 2 is a detailed explanatory diagram of the armature core in the embodiment illustrated in FIG.

FIG. 3 shows an output voltage vector diagram for explaining the output voltage of the single-phase power generation winding in the embodiment shown in FIG.

The embodiment shown in FIG. 1 has two rotor magnets, namely magnets 2, 2. . . . shows an embodiment of the present invention in which the number of poles is 8. And, except for the fact that a part of the armature core constituting the stator is provided with an armature core (indicated by reference numerals 3' and 3') having a single-phase magnetic pole configuration, It has basically the same structure as the example shown in the figure. That is, the stator of the magnet generator of the present invention is as follows.

Armature core with three-phase magnetic pole configuration 3, 3. ... and armature cores 3', 3' having a single-phase magnetic pole configuration. And the armature core 3, 3. ... are divided into groups of three, and each of the three armature cores 3 in each group is divided into groups of three.
, 3.3 is wound with a three-phase power generation winding (not shown), and a single-phase power generation winding (not shown) is wound around the armature cores 3' and 3'. .

The armature core in the embodiment shown in FIG. 1 will be described below with reference to FIG. 2.

Magnet 2 provided in the rotor in the illustrated embodiment in FIG.
Since the number of 0 pieces is 8 pieces, the 9-pole armature core 3,3
．． ... and two-pole armature cores 3', 3' constitute a stator. And V! P matching armature core 3, 3. ... has a central angle of 30°, and armature cores 3', 3' having a central angle of 45° are provided at a central angle of 37.5° from each of the armature cores 3, 3 at both ends. There is. The embodiment shown in FIGS. 1 and 2 is for the case where the number of magnets in the rotor is 8 as described above, and the number of poles of the armature core 3.3, . . . 3.3. ..., 3'.

It goes without saying that the central angle between 3' is necessarily determined in accordance with the number of magnets.

Next, the output voltage of the single-phase power generation winding (not shown) wound around the armature cores 3', 3' will be explained with reference to FIG. Now, the armature core 3'.

If the number of turns of the power generation winding wound around each of the armature cores 3' and 3' is equal to the number of turns of the power generation winding explained in relation to FIG. The output voltage of each power generation winding is also 1
” You can think that. Therefore, the armature core 3', 3
The combined output voltage of the power generation winding wound around ' is "2" as shown in FIG. That is, the output voltage becomes equal compared to the case where a single-phase winding is applied to an armature core having a three-phase magnetic pole configuration as described in connection with FIG.

As explained above, the single-phase power generation winding according to the present invention is
The same voltage can be output with a number of turns that is two-thirds of the total number of turns of the three power generation windings in the example related to FIG. 5.

Furthermore, since the effective winding space of the power generation winding for the armature cores 3', 3' in the present invention is large as is clear from FIG. 2, the number of turns of the power generation winding may be increased. is possible. Therefore, a higher voltage single-phase output can be obtained in accordance with the number of turns of the power generation winding.

Furthermore, when converting the single-phase output to direct current, there is an advantage that only two rectifying elements (for example, diodes) are required due to the single-phase output.

Although the present invention has been described above in connection with the embodiment shown in Figure 1, the present invention is not limited to this embodiment, and can also be applied to a magnet generator equipped with a rotor having magnetic poles other than 8 poles. can do.

(Effects of the Invention) As explained above, according to the present invention, by making a part of the magnetic poles of the three-phase stator into a single-phase structure, in addition to the three-phase output, one A magnet generator capable of outputting a phase output can be provided.

[Brief explanation of drawings]

FIG. 1 is a structural diagram of one embodiment of the present invention, and FIG. 2 is a detailed explanatory diagram of the armature core in the embodiment illustrated in FIG. FIG. 3 is an output voltage vector diagram for explaining the output voltage of the single-phase power generation winding in the embodiment shown in FIG. Figure 4 is a general structural diagram of an external rotor type magnet generator, and Figure 5 is an output voltage vector diagram when a single-phase power generation winding is attached to the three-phase magnetic poles in the example shown in Figure 4. shows. In the figure, 1 represents a yoke, 2 represents a magnet, and 3 and 3' represent an armature core. Patent applicant: Sawafuji Electric Co., Ltd. Representative Patent Attorney Mori 1) Hiroshi (2 others) Figure 1
Figure 2 Figure 4

Claims (1)

[Claims] A power generation winding is wound around a rotor having a plurality of magnets arranged circumferentially along the inner peripheral surface of a cylindrical yoke, and an armature core having a plurality of magnetic poles facing the magnets of the rotor. In an external rotor type magnet generator equipped with a rotating stator, the stator has an armature core with a three-phase magnetic pole configuration and an armature core with a single-phase magnetic pole configuration in a part of the stator. In addition, a single-phase AC voltage is output by the power generation winding wound around the armature core having the single-phase magnetic pole configuration, and a three-phase AC voltage is output by the power generation winding wound around the armature core having the three-phase magnetic pole configuration. A magnet generator characterized in that it is configured to output.