JP2002291216A - Single pole rotation electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change the low voltage and large current characteristics of a single pole rotation machine to the characteristics of voltage, current, the number of revolution, and efficiency, equivalent to that of a DC rotation electric machine of standard specification, in order to make the single pole rotation machine usable in actual use and to eliminate the brushless. SOLUTION: One coil strip of an armature coil is housed in a surface slot of an armature core so as to interlink sufficiently with field system magnetic flux, and the other coil strip is housed in a deep slot of the armature core so as not to interlink with the field system magnetic flux as much as possible, wherein each housed coil forms one armature. The above two armatures are coupled magnetically and a field system is generated so that the field system magnetic flux penetrates the armatures, then magnetic flux is generated, which is interlinked effectively with the coil strip in the surface slot of the armature core, to form a field system for the single pole rotation electric machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for increasing the armature voltage of a single-pole rotating electric machine and improving the brushlessness.

[0002]

BACKGROUND OF THE INVENTION Monopolar rotating electrical machines are inherently low voltage,
It is reported in the literature that some of the products actually made with a large current have relatively high voltages of 300 kW, 500 V, and 3000 rpm. Also, some of the currently published applications generate a high voltage,
It is considered difficult to withstand practical use as a general generator or electric motor.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a low voltage and a large current, which are characteristics of a single-pole rotating electric machine, are put into practical use as voltages, currents, rotation speeds and efficiencies equivalent to those of a general DC rotating electric machine. And be brushless.

[0004]

Means for Solving the Problems In a DC generator, since an imbalance in the electromotive force occurs due to an unequal gap, which is a problem, a pressure equalizing ring has been conventionally used.

According to the present invention, the cause of the inconsistency of the electromotive force, which is a problem, is created in a unipolar rotating electric machine.
The electromotive force generated in the armature coil is taken out as an output, or power is taken out by applying power from the outside.

For this purpose, one of the coil sides of the armature coil is inserted into a slot on the surface of the armature core so as to sufficiently interlink with the field magnetic flux, and the other coil side is inserted into a deep slot or outside of the armature core. The armature is magnetically shielded with respect to the field magnetic flux in a slot so that the magnetic flux does not interlink with the field magnetic flux as much as possible.

One of the armatures is used as a main part of a single-pole rotating electric machine, and the other is used by using an armature coupling iron for magnetically coupling the two.

First, as a field for passing a field magnetic flux through an armature formed by combining two armatures, a magnetic flux is evenly transmitted to a coil side in a slot on the armature surface and iron loss of the field core is reduced. In order to achieve this, a magnetic pole ring, which is formed by punching silicon steel sheets in an annular shape and stacked, is attached to the tip of a field core having a width of one armature iron so that the field irons have the same polarity at the tips of adjacent neighbors. Energize the windings and attach the field iron core to the field coupling iron to magnetically couple the field to the other field, and on the opposite side the separation length of the two armatures Attach a field of the same shape as above to the remote position, excite it so that the polarity is opposite, and create a field that creates a magnetic flux that effectively links to the coil side in the slot on the surface of the armature core of the monopolar rotating electric machine. Field.

The following is also a field for an armature in which two armatures are connected, wherein the diameter of the central portion of a cylindrical field core concentric with the main shaft is determined by the width of the separation between the two armatures. Part is reduced, the field winding is housed, and a magnetic pole ring is mounted on the surface of the field iron core to reduce iron loss, and used as the field of a single-pole rotating electric machine. It can also have a structured structure.

As the field of the armature, a cylindrical permanent magnet is attached to the outer periphery of the central portion of the main shaft so as to have a separation length of the two armatures smaller than the inner diameter of the armature. Attach a soft magnetic body with the same inner and outer shape as the permanent magnet, and attach a cylindrical permanent magnet with a magnetic pole ring on the outside so that an appropriate gap can be formed with the armature. The field of the machine.

Next, as a field when one armature is used, the armature retains a gap with a magnetic pole ring or a field iron core,
In addition, the field winding is a field winding that is housed in a field iron core that has a cylindrical space that is concentric with the main shaft so that it can be housed in the back. On the side where there is, as the field of a single-pole rotating electric machine.

[0012] In this field, the field winding may be omitted, and the field iron core may be a permanent magnet.

In order to excite the above-mentioned various field windings to brushless excitation, when a single-pole rotating electric machine is used as a generator, a brushless exciter used in a synchronous generator or the like is also used. Although it is possible, a rotating armature type AC generator or the like is required, and when used as an electric motor, brushless excitation cannot be achieved at present.

However, in the present invention, the core of the outer iron-shaped transformer is separated into a fixed portion and a rotating portion by a cylindrical gap in the main shaft rotation direction, and the cylindrical portion in the main shaft rotation direction has a width of the silicon steel strip. It is wound step by step so that the cross section of the plane including the center axis of the spindle becomes trapezoidal, the bottom is made, and silicon steel plates are punched out stepwise and annularly so as to match the bottom slope, and the stacking side parts The primary winding is placed in the fixed part and the secondary winding is placed in the rotating part to form a rotationally coupled transformer.The output of the variable output inverter is added to the primary winding, and the output is obtained from the secondary winding. And supply it to the field winding.

A ferrite soft magnetic material can be used for the iron core of the rotary coupling transformer, but the rotating part has a portion facing the gap reinforced with a ring-shaped magnetic pole, and a surface in contact with the inner periphery of the secondary winding is silicon. If reinforced by winding a steel strip, it can withstand centrifugal force.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show a first embodiment. The coil side 5 is accommodated in the slot 48 on the surface of the armature core 2, the coil side 6 is accommodated in the deep slot 49 of the armature core 2, and each coil side is connected at the coil end 7 to form one armature coil 44. However, when a single-turn coil side is used, one coil end serves as a connection with the adjacent armature coil 44.
In the case of n-turn winding, the beginning and end of the winding play the role. An armature 4 in which the armature coil 44 is placed all around the armature core 2
The armature 45 is formed by magnetically coupling the armature 3 and the armature 43 a with the armature connecting iron 3.

In this connection, the armature core gap 4 makes it difficult for the armature connecting iron 3 to pass the magnetic field flux from the vertical direction to the silicon steel plate of the armature connecting iron 3, thereby reducing the iron loss of the armature connecting iron 3.

The armature coils 44 may be connected in series as necessary, such as voltage and current, or may be divided equally and connected in parallel. Alternatively, these connections can be switched and operated at any time by a thyristor or the like.

The field 46 comprises a magnetic pole ring 8, a field iron core 9, a field winding 10, and a field coupling iron 11. If the magnetic pole for the armature 43 is an N pole, the magnetic pole for the armature 43a is S.
Excitation to be pole.

If an exciting current is applied to the field winding 9, the magnetic flux coming out of the N pole will cause the gap 47 and the armature core 2 of the armature 43.
Coil side 5 in the slot 48 on the surface of the armature core 2,
Armature connecting iron 3, armature core 2 of armature 43a, coil side 5 in its surface slot 48, gap 47, S pole,
Since the magnetic flux passes through the field connecting iron 11 and the N pole and hardly interlinks with the coil side 6, when electric power is externally applied to the armature coil 44, the armature coil 44 rotates as an electric motor, and a rotation output appears from the main shaft 12. Is rotated by external power, an induced electromotive force is generated in the armature coil 44, and the generator becomes a generator.

FIG. 3 shows the field of the second embodiment. The armature is the same as that of the first embodiment, and the magnetic pole ring 8a is attached to the outer peripheral surface of the field iron core 13. The field winding 14 is placed on the outer peripheral surface of the motor, and is excited by using the rotary coupling transformer 51.

The rotary coupling transformer 51 includes a primary winding 19, a secondary winding 19a, a bottom portion 20 of the fixed core, a side portion 21 of the fixed core, a bottom portion 20a of the rotating core, and a side portion 2 of the rotating core.
1a is a main portion, and the bottom 20 of the fixed portion core is attached to a fixed portion 22 such as a bracket, and the bottom portion 20a of the rotating portion core is attached to the main shaft 12a via a pedestal 24 provided with a ventilation hole 23.

If an output variable inverter is connected to the primary winding 19 and power is supplied, an induced electromotive force is generated in the secondary winding regardless of whether the main shaft 12a is rotating or stopped. The output is rectified by a bridge rectifier 52 using the semiconductor rectifier 17 to excite the field winding 14. Note that these excitation methods are used in other embodiments.

FIG. 4 is a connection diagram of FIG.
3 shows a connection state from the connection to the field winding 14.

FIG. 5 is a single-turn winding diagram of the armature coils according to the first and second embodiments.

FIG. 6 is a two-turn winding diagram of the armature coil according to the first and second embodiments.

FIG. 7 is a developed view of a single turn of the armature coil according to the first and second embodiments.

FIG. 8 is a developed view of the armature coil according to the first and second embodiments in two turns.

FIG. 9 shows an n-turn armature coil according to the first and second embodiments.

FIG. 10 is a partial view of the armature used in the first and second embodiments. The coil side 6a is shielded from the field magnetic flux by a shield lid 28, a shield side surface 29, and a shield gap 30. .

FIG. 11 shows that the shield gap 30 in FIG. 10 is provided on the side surface and the bottom side like the shield gap 30a to enhance the shielding effect.

FIG. 12 shows a case where the non-magnetic material is stacked on the shield side surface bottom surface 29b in which the side surface and the bottom surface are integrated in the same manner as the armature core 2c, or the support members 31, 3 made of an insulator are used.
1a to form a shield gap 30b.

FIG. 13 is a partial view of an armature corresponding to a magnetic field according to the first and second embodiments. The armature core 2d has a gap 32
The coil sides 5b and 6d can be accommodated in the armature core 2d before assembling, and unnecessary magnetic flux circulating in the armature core 2 and the armature coupling iron 3b is divided. To reduce

FIG. 14 is similar to FIG. 13, except that the silicon steel plate of the armature connecting iron 3c is substantially perpendicular to the circumferential direction and that there is no gab 4b.

FIGS. 15 and 16 show a third embodiment. The field 54 is located at the back of a cylindrical space 55.
a is attached to the main shaft 12b, and the cylindrical armature 53 is attached to the bracket 34a.
7a is held and inserted into the cylindrical space 55.

FIG. 17 shows an n-turn armature winding according to the third embodiment. The connection portions 35 and 36 between the coil side 5d and the coil end 7c are on the surface of the armature core.

FIG. 18 shows the fourth embodiment.
4a is mounted on the outer frame 1b, the armature 53a is mounted on the armature mounting pedestal 42, and mounted on the main shaft 12c. Input and output of power to the armature 53a uses the current collector ring 41 and the brush 40.

FIG. 19 is a partial view of the armature according to the third and fourth embodiments, in which armature il sides 5f, 5g, 6h and 6i are accommodated on both the inside and outside of the armature core 2d.

FIG. 20 is a partial sectional view of the armature according to the third and fourth embodiments. By making the cuts 55, the bulges of the connecting portions 35, 35a, 36 and 36a can be eliminated.

FIG. 21 shows a fifth embodiment.
Although it is basically the same as the fourth embodiment, the armature core 2f is formed by winding a silicon steel strip in the circumferential direction of the main shaft 12d.

FIG. 24 shows a field used in the first and second embodiments. The field coupling iron 11e and the field iron core 13g use permanent magnets, and the field coupling iron 11f uses a soft magnetic material. .

FIG. 25 shows a sixth embodiment, which is basically the same as the fifth embodiment, except that the main shaft is divided into a main shaft 12e and a main shaft 12f so that the field magnetic flux can easily pass through. .

[0043]

The effects of the present invention are listed as follows. 1) It has both voltage, current, efficiency, rotation speed, and the like that are equal to or higher than those of a general rotating electric machine, and is not realized by a conventional single-pole rotating electric machine. 2) No brushing is possible including the excitation circuit. 3) Since the switching of the armature coil connection can be easily performed, the voltage, current and rotation speed can be easily changed. If the excitation current of the field is adjusted and used together with the bridge type reversible chopper, the speed control and the regenerative braking are performed. Can be made effective and highly efficient.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part according to a first embodiment of the present invention, and is a BB cross-sectional view of FIG.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a sectional view of a field according to a second embodiment.

FIG. 4 is a circuit diagram of an exciting portion of FIG.

FIG. 5 shows an armature coil 1 according to the first and second embodiments.
It is a winding figure of a winding.

FIG. 6 illustrates a second example of the armature coil according to the first and second embodiments.
It is a winding figure of a winding.

FIG. 7 shows one of the armature coils according to the first and second embodiments.
FIG.

FIG. 8 shows an armature coil 2 of the first and second embodiments.
FIG.

FIG. 9 is an n-turn armature coil according to the first and second embodiments.

FIG. 10 is a partial view of an improved armature of FIG. 2;

FIG. 11 is a partial view of a modified version of the armature of FIG. 2;

FIG. 12 is a partial view of an improved armature of FIG. 2;

FIG. 13 is a partial view of a modification of the armature of FIG. 2;

FIG. 14 is a partial view of a modification of the armature of FIG. 2;

FIG. 15 is a sectional view of the third embodiment,
It is -D sectional drawing.

16 is a sectional view taken along the line CC of FIG.

FIG. 17 shows an n-turn armature coil according to the third embodiment.

FIG. 18 is a cross-sectional view of the fourth embodiment.

FIG. 19 is a partial view of a modification of the armature of FIG. 16;

FIG. 20 is a partial view of a modification of the armature of FIG. 16;

FIG. 21 is a sectional view of a main part of the fifth embodiment.

FIG. 22 is a partial view of a side view of the armature shown in FIG. 21;

FIG. 23 is a partial view of an improved armature of FIG. 21;

FIG. 24 is a cross-sectional view using a permanent magnet for the field according to the second embodiment.

FIG. 25 is a sectional view of a main part of the sixth embodiment.

FIG. 26 is a partial view of a field according to a sixth embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Stator outer frame 2 ... Armature core 3 ... Armature connection iron 4 ... Armature core gap 5 ... Armature coil side of the surface slot of armature core 6 ... Armature coil side of deep slot in armature core 7 Armature coil end 8 Magnetic pole ring 9 Field iron core 10 Field winding 11 Field coupling iron 12 ..Main shaft 13 ... Field iron core of the second embodiment 14 ... Field of the second embodiment 19 ... Rotary coupling transformer primary winding 19a ... Rotary coupling transformer 2 Next winding 20 ... Bottom of core of rotation-coupled transformer fixing part 20a ... Bottom of core of rotation-coupled transformer rotation part 21 ... Side of core of rotation-coupled transformer fixing part 21a ... Rotation-coupled transformer Side part 43 of container rotating part iron core Armature 43a of first embodiment 43a Armature of first embodiment 44 ················································································ Gap 48: Slot on the surface of armature core 2 49: Deep slot on armature core 2

Claims (10)

[Claims] 1. An armature coil having one coil side provided in a surface or a slot of the armature core and sufficiently linked with a field magnetic flux, and the other coil side provided in a deep slot or outside of the armature core. A single-pole rotating electric machine having an armature that minimizes linkage with magnetic flux. 2. A single-pole rotating electric machine having an armature in which two armatures according to claim 1 are magnetically coupled with an armature connecting iron. 3. A single-pole rotating electric machine having an armature according to claim 1 or 2, wherein the armature in which a coil side accommodated in a deep slot of the armature core is shielded from field magnetic flux. 4. A magnetic pole ring made of a silicon steel plate in order to transmit magnetic flux evenly to coil sides in slots on the surface of the armature core of claim 2 or 3 and to reduce iron loss of the field core. Excitation current is applied to the field winding so that the field iron core attached to the tip of the field iron has the same polarity at the adjacent ends,
The base of the field core is attached to the field-coupling iron, and an exciting current is applied to the opposite side so that it has the same shape and different polarity as described above, and the magnetic flux effectively linked to the coil side in the slot on the armature core surface A unipolar rotating electric machine with a field to make. 5. A central portion of a cylindrical field iron core concentric with a main shaft to allow a magnetic flux of a magnetic field to effectively interlink with a coil side in a slot on a surface of an armature iron core according to claim 2 or 3. A single-pole rotating electric machine that has a field winding with a smaller diameter and a field winding with a magnetic pole ring attached to the surface of the field core to reduce iron loss. 6. The armature according to claim 1 or 3 holds a gap with a magnetic pole ring or a field core, and the field winding has a cylindrical space concentric with the main shaft so as to fit in the back. A single-pole rotating electric machine having a magnetic field in which a field winding is accommodated in a field core in which a magnetic pole ring is mounted on a side of an armature having a slot. 7. The iron core of a core-shaped transformer is separated into a fixed part and a rotating part by a cylindrical gap in the main shaft rotation direction, and the cylindrical part of the iron core in the main shaft rotation direction has a stepped width of the silicon steel strip. In place, the section including the center axis of the spindle is wound so that the cross section of the surface becomes trapezoidal, and the bottom is formed. Put the primary winding in the fixed part and the secondary winding in the rotating part and use it as a rotary coupling transformer, add the output of the variable output inverter to the primary winding, obtain the output from the secondary winding, rectify it with a semiconductor rectifier, and perform field winding. A unipolar rotating electric machine having a field exciter for exciting a wire. 8. A single-pole rotating electric machine according to claim 7, wherein the iron core is a ferrite-based soft magnetic material, and the rotating part has a field exciting device reinforced with a silicon steel plate and a steel plate. 9. The armature according to claim 2 or 3, wherein a cylindrical permanent magnet is provided on an outer peripheral portion of a central portion of a main shaft as a field of the armature. A soft magnetic body having the same inner and outer diameters as the above-mentioned permanent magnet is attached to both ends of the armature, and a cylindrical permanent magnet with a magnetic pole ring attached to the outer periphery is fitted with an appropriate gap with the armature. Single pole rotating electric machine with permanent magnet field made and mounted. 10. A single-pole rotating electric machine using the field of claim 5 or 6 as a permanent magnet.