JP2613740B2 - Single opposing magnetic pole induction generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single opposed magnetic pole induction generator. An induction generator has been known as one of electric machines for a long time, and there are various types according to applications. For example, in addition to power plants, ships, aviation engines, and the like, those used at home, leisure, and the like have been developed and widely used.

[0002] These induction generators convert kinetic energy into electric energy, and are required to have high energy conversion efficiency from the viewpoint of increasing the energy utilization rate.

[0003]

2. Description of the Related Art In an induction generator, as is well known, an induced electromotive force is generated in a coil in proportion to a decrease in the number of magnetic fluxes due to a change in the number of magnetic fluxes linked to the coil (Faraday's law of electromagnetic induction). ) The phenomenon is used. According to Lenz's law, the induced electromotive force generated by electromagnetic induction is generated in a direction that generates a current that prevents a change in the number of magnetic fluxes.

For example, as shown in FIGS. 10A and 10B, if a magnetic flux Φ orthogonal to the circular coil 1 moves from A to B in the direction of the arrow, the current I ₁ is calculated according to Faraday's law of electromagnetic induction. Flows, and the pointer of galvanometer 2 is clockwise (+
Direction) and return to the zero position. On the other hand, if the magnetic flux Φ has moved to C from B in the direction of the arrow, current I ₂ flows, guidance galvanometer 2 returns to the zero position after deflected counterclockwise (direction).

In general, an induction generator generates an induced electromotive force in accordance with Fleming's right-hand rule, depending on whether the conductor cuts the magnetic flux or the magnetic flux cuts the conductor as described with reference to FIG. It has a structure. Among them, all the rotor portions are N-pole and S-pole alternating rotating magnetic poles in a one-sided body. Two poles face NS, and four poles, six poles, and so on. The shape of NS is formed.

However, as a special case in the related art, an electromotive force is generated when one conductor cuts or moves or rotates a magnetic flux in the same direction, and a direct current is generated through a sliding ring (slip ring). There are some unipolar induction machines that can be moved in the same direction.

[0007]

However, in the above-mentioned conventional magnetic induction generator, the ferrite or rare earth type high energy product and the reversible magnetic permeability (recoil magnetic permeability) are used.
It is conceivable that the rotor is composed of small magnets, or the magnetic circuit configuration has the same magnetic poles, and the energy conversion efficiency is increased by reducing the demagnetization of the demagnetizing field of the induction coil between one magnetic circuit. However, the demagnetization effect of the rotor core due to the demagnetizing field, that is, the reduction in energy conversion efficiency due to the demagnetizing field of the armature reaction has been an important issue.

The present invention has been made in view of the above points, and has as its object to provide a single opposed magnetic pole induction generator with high energy conversion efficiency.

[0009]

According to the first aspect of the present invention, there is provided a rotating shaft made of a non-magnetic material and driven from the outside, and a rotating shaft around the rotating shaft. Are arranged at a slight gap from each other, and have an even number of four or more stator cores having the same cross-sectional shape, and are axially mounted on the rotating shaft and surrounded by the even number of stator cores. A first single opposing magnetic pole rotor having first and second magnets, which are magnetized on the stator core side and have the same polarity facing the even-numbered stator cores in an arc shape in a direction orthogonal to the rotation axis; And the first and second stator cores are axially mounted on the rotating shaft so as to face the first single opposed magnetic pole rotor and are surrounded by the even number of stator cores.
A second magnet having third and fourth magnets whose stator cores are magnetized so as to have opposite polarities to the first and second magnetic poles, which are opposite to the even number of stator cores in the same direction as the magnets of the first and second arcs. A single opposing magnetic pole rotor, wherein the arc length of each of the first and second magnets of the first single opposing magnetic pole rotor; The arc length of each of the third and fourth magnets of the single opposing magnetic pole rotor is the same as the arc length of the even number of stator cores, and is wound around the first stator core of the even number of stator cores. A turned first winding, a second winding wound around a second stator core adjacent to the first stator core in a direction opposite to a winding direction of the first winding, and a second winding wound around the second winding. A third stator core adjacent to the stator core is wound in the same direction as the winding direction of the first winding. The predetermined third winding and a fourth winding wound in a direction opposite to the winding direction of the third winding on the fourth stator core adjacent to the third stator core by a predetermined connection. The first and second single opposing magnetic pole rotors are rotationally driven to be connected to the even number of stator cores in accordance with the positions of the first, second, third and fourth magnets. When a sequentially excited rotating magnetic field is generated,
The number of magnetic fluxes interlinking with one of the first to fourth windings increases, and at the same time, the number of magnetic fluxes interlinking with another winding adjacent to the one winding decreases. The first, second, third, and fourth windings are configured to combine and output periodic rectangular wave electromotive forces.

According to the second aspect of the present invention, there is provided a rotating shaft made of a non-magnetic material, which is externally driven, and is disposed on a circumference centered on the rotating shaft with a slight gap therebetween. Four or more even-numbered stator cores having the same shape in the shape of an arc, and are attached to the rotating shaft and are surrounded by the even-numbered stator cores, and the even-numbered stator cores are arranged in a direction orthogonal to the rotating shaft. A first single opposing magnetic pole rotor having first and second magnets having the same polarity magnetized on the stator core side and facing the stator core in an arc shape, and the first single opposing magnetic pole rotor. The first and second stator cores are axially opposed to the rotating shaft and are surrounded by the even-numbered stator cores, and arcuately face the even-numbered stator cores in the same direction as the first and second magnetic poles. So that they have opposite polarities to the second magnet A second single opposing magnetic pole rotor having third and fourth magnets magnetized on the data core side, wherein the first single opposing magnetic pole rotor is The arc lengths of the first and second magnets and the arc lengths of the third and fourth magnets of the second wheel-opposing magnetic pole rotor are the same as the arc lengths of the even-numbered stator cores. And the first of the even number of stator cores.
A first winding wound in a predetermined direction around the first stator core, and a second winding wound in series with the first winding and adjacent to the first stator core in a direction opposite to the predetermined direction. A second winding wound, a third winding connected in series with the second winding and wound on a third stator core adjacent to the second stator core in the predetermined direction; A fourth winding wound in series with the third winding and wound on the fourth stator core adjacent to the third stator core in a direction opposite to the predetermined direction; When the single opposing magnetic pole rotor is driven to rotate to generate a rotating magnetic field that is sequentially excited in the even number of stator cores according to the positions of the first, second, third, and fourth magnets. And the number of magnetic fluxes linked to one of the first to fourth windings increases. A first series circuit that outputs a periodic first rectangular wave electromotive force by repeating a decrease in the number of magnetic fluxes linked to the other winding adjacent to the one winding at the same time; A fifth winding wound on the first stator core in a direction opposite to the predetermined direction, and a fifth winding wound in series with the fifth winding and wound on the second stator core in the predetermined direction. A sixth winding, a seventh winding connected in series with the sixth winding and wound around the third stator core in a direction opposite to the predetermined direction, and a seventh winding connected in series with the seventh winding. The eighth stator wound in the predetermined direction around the fourth stator core
The first and second single opposing magnetic pole rotors are rotationally driven to rotate the even number of stator cores according to the positions of the first, second, third and fourth magnets. When a rotating magnetic field that is sequentially excited is generated, the number of magnetic fluxes linked to one of the fifth to eighth windings increases, and at the same time, another winding adjacent to the one winding A second series circuit that outputs a second rectangular wave electromotive force having the same period as that of the first rectangular wave electromotive force by repeating the decrease in the number of magnetic fluxes interlinking with the first rectangular wave electromotive force; And a rotation position detecting means for detecting a rotation position of the second single opposed magnetic pole rotor;
The positive component of the first square wave electromotive force from the first series circuit and the second square wave electromotive force from the second series circuit in response to a detection signal from the rotational position detecting means. And a switching means for alternately and selectively outputting the positive component at every 180 ° of electrical angle, and combining and outputting the DC electromotive force.

[0011]

According to the first aspect of the present invention, the first
When the second single opposed magnetic pole rotor is driven to rotate, a rotating magnetic field is generated which is sequentially excited in an even number of stator cores according to the positions of the first, second, third and fourth magnetic poles. Sometimes, the number of magnetic fluxes interlinking with one of the first to fourth windings increases, and at the same time, the number of magnetic fluxes interlinking with another winding adjacent to one winding decreases. Since the electromotive force generated when the number of magnetic fluxes interlinking with one winding increases and the electromotive force generated when the number of magnetic fluxes interlinking with another winding decreases, periodic, that is, alternating current The square wave electromotive force is converted into the first, second, third and fourth
And outputs the combined signal.

According to the second aspect of the present invention, the first
Are sequentially excited in an even number of stator cores according to the positions of the first, second, third and fourth magnetic poles by rotating the first and second single opposed magnetic pole rotors. When a rotating magnetic field is generated, the number of magnetic fluxes linking to one of the first to fourth windings increases, and at the same time, the number of magnetic fluxes linking to one winding and another winding adjacent to the winding increases. By repeating the decrease, a periodic first rectangular wave electromotive force is output, and the second series circuit is configured to rotate the first and second single opposing magnetic pole rotors to generate the first first square wave electromotive force. And when a rotating magnetic field that is sequentially excited in an even number of stator cores is generated according to the positions of the second, third, and fourth magnetic poles, one of the fifth to eighth windings is interlinked. As the number of magnetic fluxes increases, the number of magnetic fluxes linked to one winding and another winding adjacent to the winding decreases. It acts to output a second square wave electromotive force of the same cycle in the first rectangular wave electromotive force and inverse phase repeating that.

The switching means is responsive to the detection signal from the rotational position detecting means for detecting the positive component of the first rectangular wave electromotive force from the first series circuit and the second component from the second series circuit. The positive component of the square wave electromotive force is alternately and selectively output at every electrical angle of 180 °, thereby acting to synthesize and output the DC electromotive force.

[0014]

FIG. 1 is a diagram showing a first embodiment of the present invention.
1 (A) is a side perspective view, and FIG. 1 (B) is 1 in FIG. 1 (A).
It is a sectional arrow view shown by B-1B '. In FIGS. 1A and 1B, reference numeral 3 denotes a rotating shaft made of a non-magnetic material and driven from the outside, 4a and Ab denote bearings for bearing the rotating shaft 3, and 5a and 5b denote bearings 4a and Ab. Reference numeral 6 denotes a cylindrical case cover for supporting the flanges 5a and 5b.

[0015] on a circumference around the rotary shaft 3, with a slight gap _{g 1} equal, the stator core 7 and 8,
9 and 10 are provided. Each stator core 7,
8, 9, and 10 have the same cross section in the shape of an arc. The rotating shaft 3 has an N-pole single opposed magnetic pole rotor 1
1N and a single opposed magnetic pole rotor 11S having an S pole are axially attached to face each other as shown in the figure. Each single opposed magnetic pole rotor 11
N and 11S are with a slight rotation gap _{g 0,} and is surrounded by the stator core 7, 8, 9, and 10.

[0016] Windings 7c and 9c are wound around the stator cores 7 and 9, respectively, clockwise in FIG. 1B. In addition, windings 8c and 10c are respectively wound around the stator cores 8 and 10 in a left-handed manner in FIG. 1B. Each of the windings 7c, 8c, 9c, and 10c is connected by a predetermined connection as described later.

FIG. 2 shows a single opposed magnetic pole rotor 11N.
2A is a longitudinal sectional view, and FIG. 2B is a side view. The single opposing magnetic pole rotor 11N has a 180 ° opposing arc-shaped magnet 12 whose front surface, that is, the surface side facing the stator cores 7 to 10 is magnetized to the N pole, and thus the opposing surface side is magnetized to the S pole. 13. The arc-shaped magnets 12 and 13 are shaped so as to face the above-described stator cores 7, 8, 9, and 10 in an arc shape.

A rotor piece 14 is interposed between the arc-shaped magnetic poles 12 and 13. Rotor piece 1
Reference numeral 4 denotes an iron core composed of a medium formed by mixing low-carbon iron with a few percent of non-ferrous molten metal, and maintaining a magnetic field balance such that the saturation point approximates the magnetic permeability under the same magnetic field.
The rotor piece 14 is brought into a state where the side in contact with the arc-shaped magnets 12 and 13 is magnetized to the S pole by the arc-shaped magnets 12 and 13. Here, FIG. 3 is a diagram showing the single opposed magnetic pole rotor 11S, FIG. 3 (A) is a longitudinal sectional view, and FIG. 3 (B) is a side view.

The single opposing magnetic pole rotor 11S has a 180 ° opposing arc shape in which the surface, that is, the surface side facing the stator cores 7 to 10 is magnetized to the S pole, and the opposing surface side is magnetized to the N pole. It has magnets 15 and 16. The arc-shaped magnetic poles 15 and 16 are shaped to face each of the above-described stator cores 7, 8, 9, and 10 in an arc shape.

A rotor piece 17 is interposed between the arc-shaped magnetic poles 15 and 16. Rotor piece 1
Numeral 7 is an iron core made of a medium formed by mixing low-carbon iron with a few percent of non-ferrous metal, and maintaining the balance of the magnetic field so that the magnetic permeability is approximately the saturation point at the same magnetic field.
The rotor piece 17 is in a state where the side in contact with the arc-shaped magnets 15 and 16 is magnetized to the N pole by the arc-shaped magnets 15 and 16. The arc lengths of the arc-shaped magnetic poles 12, 13, 15, and 16 are the same, and the stator cores 7, 8, 9, and 1 have the same length.
It is equal to the arc length inside 0. That is, 36
The arc length is obtained by dividing the length obtained by subtracting 4 g ₁ from the circumference of 0 ° into four equal parts. Also, in FIGS. 1 to 3,
The rotation gap g ₀ = R ₁ −R.

Next, FIG. 4 (A) ~ (C) is a diagram showing the wiring method of each winding, _{T 1} is the beginning winding of each winding, _{T 2} the end turns of each winding 18 and 19 output Indicates terminals. That is, FIG. 4A shows a series connection method, FIG. 4B shows a series-parallel connection method, and FIG. 4C shows a parallel connection method. The series connection method is suitable for high-voltage output because the electromotive force induced in each winding is added and output. The parallel connection method is suitable for a large current output because a current due to an electromotive force induced in each winding is added and output.

Here, the power generation operation in the case of the series connection method will be described with reference to FIGS. FIG. 5 (A)
FIG. 7 is a model diagram showing a state where the rotating magnetic fields generated by the single opposed magnetic pole rotors 11S and 11N interlink with the windings 7c to 10c.

In FIG. 5A, Φ ₁ and Φ ₂ are 2π
It is given by a rotating magnetic pole that rotates on the circumference of R. The state where the arc-shaped magnets 12 and 15 are opposed to the entire surface of the stator core 7 and the arc-shaped magnets 13 and 16 are opposed to the entire surface of the stator core 9 is shown.

At this time, the magnetic flux Φ ₁ forms the following magnetic path as shown in FIG. Rotor piece 14-
Arc-shaped magnet 12 (N) - rotation gap _{g 0} - stator core 7
- rotation gap g ₀ - arcuate magnet 15 (S) - The rotor piece 17, this time the magnetic flux [Phi ₂ forms a magnetic path such as the following.

Rotor piece 14-arc magnet 13
(N ′) − rotation gap g ₀ −stator core 9−rotation gap g ₀ −arc-shaped magnet 16 (S ′) − rotor piece 17 Therefore, a parallel magnetic path is formed, and in this state, magnetic flux Φ ₁
The interlinked winding 7c and chains, magnetic flux [Phi ₂ is interlinked winding 9c and chains.

Here, the change in the interlinkage state between each winding and Φ ₁ will be described, focusing only on the rotation of the magnetic flux Φ ₁ . In output voltage waveform of FIG. 6, the magnetic flux [Phi ₁ all at time _{t 1} winding 10
and interlink c and chains, all at time t ₂ are interlinked winding 7c and chains, all at time t ₃ is interlinked winding 8c and chains, which interlink all winding 9c and chain at time t _4, all at time t ₅ in winding 10c interlinked so, the magnetic flux [Phi ₁ is assumed to be one rotation at a constant speed during the time T in a clockwise direction in FIG.

[0027] From the time _{t 1} to time _{t 2,} the magnetic flux Φ
By winding 10c magnetic flux interlinking number of ₁ is reduced, winding 10c generates decreasing triangular wave electromotive force as shown in FIG. 6 I. At the same time, the winding 7 of the magnetic flux Φ ₁
As the number of magnetic fluxes interlinking with c increases, the winding 7c generates an increasing triangular wave electromotive force as indicated by I 'in FIG. Therefore, a positive rectangular wave obtained by adding and combining these triangular waves is output between the output terminals 18 and 19.

[0028] from the time _{t 2} to time _{t 3,} the magnetic flux Φ
By winding 7c and the number of crossing magnetic fluxes of ₁ is reduced, winding 7c generates increasing triangular wave electromotive force as shown in FIG. 6 II. At the same time, winding 8c of the magnetic flux Φ ₁
The winding 8c generates a decreasing triangular wave electromotive force as shown by II 'in FIG. Therefore, a negative rectangular wave obtained by adding and combining these triangular waves is output between the output terminals 18 and 19.

[0029] from time _{t 3} to time _{t 4,} the magnetic flux Φ
By winding 8c magnetic flux interlinking the number of ₁ is reduced, winding 8c generates decreasing triangular wave electromotive force as shown in FIG. 6 III. At the same time, the winding 9 out of the magnetic flux Φ ₁
As the number of magnetic fluxes interlinking with c increases, the winding 9c generates an increasing triangular wave electromotive force as shown by III 'in FIG. Therefore, a positive rectangular wave obtained by adding and combining these triangular waves is output between the output terminals 18 and 19.

[0030] from the time _{t 4} to time _{t 5,} the magnetic flux Φ
By winding 9c magnetic flux interlinking number of ₁ is reduced, winding 9c generates increasing triangular wave electromotive force as shown in FIG. 6 IV. At the same time, the winding 10 out of the magnetic flux Φ ₁
When the number of magnetic fluxes interlinking with c increases, the winding 10 c
Generates a decreasing triangular wave electromotive force as indicated by IV 'in FIG. Therefore, a negative rectangular wave obtained by adding and combining these triangular waves is output between the output terminals 18 and 19.

[0031] While such magnetic flux [Phi ₁ makes one rotation, the period T / 2 becomes rectangular wave electromotive force as shown in FIG. 6 is synthesized output. Since the magnetic flux Φ ₁ makes one rotation and the magnetic flux Φ ₂ makes one rotation, the same rectangular wave electromotive force is synthesized and output.
The electromotive force obtained between 8, 19 is actually twice as large as that in FIG.

As described above, according to the present embodiment, it is possible to obtain a single opposed magnetic pole induction generator with high energy conversion efficiency by absorbing the demagnetizing field. As a result of a commissioned test, the driving torque was able to be increased to a high energy conversion efficiency of up to 1 / 5.2 as compared with a conventional generator of another company.

FIG. 7 is a view showing a second embodiment of the present invention. FIG. 7 (A) is a side perspective view, and FIG. 7 (B) is FIG. 7 (A).
It is sectional arrow view shown by middle 7B-7B '. In FIGS. 7A and 7B, reference numeral 3 denotes a rotating shaft made of a non-magnetic material and driven from the outside, 4a and Ab denote bearings for bearing the rotating shaft 3, and 5a and 5b denote bearings 4a and Ab. Reference numeral 6 denotes a cylindrical case cover for supporting the flanges 5a and 5b.

[0034] on a circumference around the rotary shaft 3, with a slight gap _{g 1} equal, the stator core 7 and 8,
9 and 10 are provided. Each stator core 7,
8, 9, and 10 have the same cross section in the shape of an arc. The rotating shaft 3 has an N-pole single opposed magnetic pole rotor 1
1N and a single opposed magnetic pole rotor 11S having an S pole are axially attached to face each other as shown in the figure. Each single opposed magnetic pole rotor 11
N and 11S are with a slight rotation gap _{g 0,} and is surrounded by the stator core 7, 8, 9, and 10.

On each of the stator cores 7 and 9, windings 7c and 9c are wound rightward in FIG. 7B, and windings 27c and 29c are wound leftward in FIG. 7B. In addition, windings 8c and 10c are wound leftward in FIG. 7B and windings 28c and 30c are wound rightward in stator cores 8 and 10, respectively. Each winding 7c, 8c, 9c, 10c, 2
7c, 28c, 29c, and 30c are connected by a predetermined connection as described later.

A magnetic sensor 31 is disposed between the stator cores 7 and 10 as a rotational position detecting means. Between the stator cores 7 and 8, a magnetic sensor 32 as a rotational position detecting means is also provided. Magnetic sensors 31 and 32
Can detect the magnetic field to provide a single opposed magnetic pole rotor 11N
And the rotational position of 11S.

The single opposed magnetic pole rotor 11N and the single opposed magnetic pole rotor 11S have the shapes shown in FIGS. 2 and 3 as described above. That is, the single opposed magnetic pole rotor 1
The 1N has arc-shaped magnets 12 and 13 facing each other at 180 ° and having the same N pole on the surface side. The arc-shaped magnets 12 and 13 are connected to the stator cores 7, 8,
9 and 10 are arc-shaped.

Further, a rotor piece 14 is interposed between the arc-shaped magnets 12 and 13. Rotor piece 1
Reference numeral 4 denotes an iron core made of a medium in which low-carbon iron is mixed with a few percent of a non-ferrous molten metal, and in which the magnetic field is balanced so that the magnetic permeability becomes a saturation point approximation value in the same magnetic field.

The single opposed magnetic pole rotor 11S has 180 ° facing arc-shaped magnets 15 and 16 each having the same S pole on the surface side. Arc shaped magnets 15 and 16
Has a shape facing the above-mentioned stator cores 7, 8, 9, and 10 in an arc shape.

A rotor piece 17 is interposed between the arc-shaped magnetic poles 15 and 16. Rotor piece 1
Reference numeral 7 denotes an iron core made of a medium in which low-carbon iron is mixed with a few percent of non-ferrous molten metal, and in which the magnetic field is balanced so that the saturation point approximates the permeability in the same magnetic field.

The arc-shaped magnets 12, 13, 15, and 1
6 have the same arc length, and the stator cores 7, 8,.
It is equal to the arc length inside 9 and 10. That is, the arc length is obtained by dividing the length obtained by subtracting 4 g ₁ from the circumference of 360 ° into four equal parts. Also, FIG. 2, 3 and 7, there is a rotational clearance _g 0 _{= R} 1 -R.

Next, FIG. 8 is a diagram showing the wiring method of each winding, T ₁ is the beginning winding of each winding, T ₂ the end turns of each winding 18 and 19 show the output terminal. Each winding constitutes two series circuits, and these series circuits are alternately selectively connected by switches SW1 and SW2 as switching means. The switches SW1 and SW2 are switched according to detection signals from the magnetic sensors 31 and 32.

As shown in FIG. 8, the first series circuit includes a winding 7c wound right-hand around the stator core 7, and a left-hand winding around the stator core 8 connected in series with the winding 7c and adjacent to the stator core 7. Winding 8c and a stator core 9 connected in series with the winding 8c and adjacent to the stator core 8
And a winding 10c wound in a clockwise direction and a winding 10c connected in series with the winding 9c and wound leftward on the stator core 10 adjacent to the stator core 9.

As shown in FIG. 8, the second series circuit includes a winding 27c wound leftward around the stator core 7, and a winding 28c wound rightward around the stator core 8 and connected in series with the winding 27c. , A winding 29 c which is connected in series with the winding 28 c and is wound leftward around the stator core 9.
And the stator core 10 connected in series with the winding 29c.
And a winding 30c wound clockwise.

According to the above-described structure, the single opposing magnetic pole rotors 11N and 11S are driven to rotate, so that the stator cores 7 to 10 are sequentially excited in accordance with the positions of the arc-shaped magnets 12, 13, 15, and 16. When a rotating magnetic field is generated, as described with reference to FIGS. 5 and 6,
By repeatedly increasing the number of magnetic fluxes interlinking one of the windings 7c to 10c and simultaneously decreasing the number of magnetic fluxes interlinking with another winding adjacent thereto, the rotation period becomes one.
A first rectangular wave electromotive force similar to that of FIG. 6 having a period of / 2 is output from the first series circuits (7c to 10c).

At this time, the number of magnetic fluxes interlinking with one of the windings 27c to 30c increases and the number of magnetic fluxes interlinking with another winding adjacent thereto decreases at the same time. A second rectangular wave electromotive force having the same phase as that of the first rectangular wave electromotive force and having the same phase as that of the first rectangular wave electromotive force, that is, a phase opposite to that of FIG. 6 is output from the second series circuits (27c to 30c).

Then, the switches SW1 and SW2 are switched at every mechanical angle of 90 ° in accordance with the detection signals from the magnetic sensors 31 and 32, so that the first series circuit outputs the first signal from the first series circuit as shown in FIG. Positive components I and II of square wave electromotive force
I and the positive components II and IV of the second square wave electromotive force from the second series circuit are alternately selected at every electrical angle of 180 ° and output between the output terminals 18 and 19.

That is, according to the present embodiment, a positive DC electromotive force is synthesized and output with high energy conversion efficiency by absorbing the demagnetizing field. Also, by shifting the switching phase by 180 °, a negative DC electromotive force can be synthesized and output.

[0049]

As described above, according to the first aspect of the present invention, the first and second single opposed magnetic pole rotors are rotationally driven to generate a rotating magnetic field which is sequentially excited in an even number of stator cores. When the number of magnetic fluxes interlinking with one of the first to fourth windings increases, the number of magnetic fluxes interlinking with another adjacent winding decreases at the same time. Is generated when the number of magnetic fluxes linked to the other winding increases and the electromotive force generated when the number of magnetic fluxes linked to other windings decreases, so that a periodic AC square wave electromotive force is generated. Are synthesized and output, the demagnetizing field is absorbed, and high energy conversion efficiency can be obtained.

According to the second aspect of the present invention, the first series circuit is configured to rotate the first and second single opposing magnetic pole rotors to be sequentially excited by an even number of stator cores. When a magnetic field is generated, the number of magnetic fluxes linked to one of the first to fourth windings increases and the number of magnetic fluxes linked to another adjacent winding decreases at the same time. To output a periodic first rectangular wave electromotive force,
Further, at this time, the second series circuit increases the number of magnetic fluxes linked to one of the fifth to eighth windings and decreases the number of magnetic fluxes linked to another adjacent winding at the same time. By repeating this, the second rectangular wave electromotive force having the same cycle as the first rectangular wave electromotive force is output in the opposite phase. Then, the switching means performs the first operation in response to the detection signal from the rotational position detection means.
The positive component of the first square wave electromotive force from the series circuit of
And the positive component of the second rectangular wave electromotive force from the series circuit is alternately and alternately output at every electrical angle of 180 ° to synthesize and output the DC electromotive force. There is a feature that can be made efficient.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 shows a single opposed magnetic pole rotor 11 according to the first embodiment of the present invention.
FIG.

FIG. 3 is a single opposed magnetic pole rotor 11 according to the first embodiment of the present invention;
It is a figure showing S.

FIG. 4 is a diagram showing a connection method according to the first embodiment of the present invention.

FIG. 5A is a diagram schematically showing a state in which the rotating magnetic field of the first embodiment of the present invention interlinks with each of the windings 7c to 10c. (B) is a diagram showing a magnetic path to be formed.

FIG. 6 is a diagram showing an output voltage waveform according to the first embodiment of the present invention.

FIG. 7 is a diagram showing a second embodiment of the present invention.

FIG. 8 is a diagram showing a connection method according to a second embodiment of the present invention.

FIG. 9 is a diagram showing an output voltage waveform according to the second embodiment of the present invention.

FIG. 10 is a diagram illustrating the principle of an induction generator.

[Explanation of symbols]

3 Rotation axis 7-10, 27-30 Stator core 7c, 8c, 9c, 10c, 27c, 28c, 29c,
30c Winding 11N, 11S Single opposed magnetic pole rotor 12, 13, 15, 16 Circular magnet 31, 32 Magnetic sensor SW1, SW2 Switch

Claims (2)

(57) [Claims] 1. A rotating shaft made of a non-magnetic material and driven from the outside, and disposed on a circumference centered on the rotating shaft with a slight gap therebetween, having the same cross-sectional shape of an arc. And at least four even-numbered stator cores, which are axially attached to the rotating shaft and are surrounded by the even-numbered stator cores, and arcuately opposed to the even-numbered stator cores in a direction orthogonal to the rotating shaft. The same polarity
A first single opposing magnetic pole rotor having a first and second magnets magnetized in stator core side, opposed to the single opposed pole rotor of the first with the pivotally attached to said rotary shaft the even is surrounded in several of the stator core, so that the first and second magnetic pole opposite polarities facing the first and second magnets in the same direction into several stator core and the circular arc shape the even A second opposed magnetic pole induction generator comprising: a second single opposed magnetic pole rotor having third and fourth magnets magnetized on the stator core side , wherein the first opposed magnetic pole induction generator comprises: single opposing pole first and the arc length of the second magnet rotor, and a single opposing pole rotor of the third of the second
And the arc length of the fourth magnet is the same as the arc length of the even number of stator cores, and the first winding wound on the first stator core of the even number of stator cores; A second winding wound on the second stator core adjacent to the first stator core in a direction opposite to the winding direction of the first winding; and a third stator core adjacent to the second stator core. A third winding wound in the same direction as the winding direction of the first winding, and a fourth stator core adjacent to the third stator core wound in a direction opposite to the winding direction of the third winding. The turned fourth winding is connected by a predetermined connection, and the first and second single opposing magnetic pole rotors are driven to rotate, so that the first, second, third and third windings are rotated. A rotating magnetic field is generated which is sequentially excited in the even number of stator cores according to the positions of the four magnets. When the number of magnetic fluxes linked to one of the first to fourth windings increases, the number of magnetic fluxes linked to another winding adjacent to the one winding decreases at the same time. A single opposed magnetic pole induction generator characterized in that by repeating the same, periodic rectangular wave electromotive force is synthesized and output by the first, second, third, and fourth windings. 2. A rotating shaft made of a non-magnetic material, which is driven from the outside, and is disposed on a circumference centered on the rotating shaft with a slight gap therebetween, and has an arc-shaped cross section. And at least four even-numbered stator cores, which are axially attached to the rotating shaft and are surrounded by the even-numbered stator cores, and arcuately opposed to the even-numbered stator cores in a direction orthogonal to the rotating shaft. each other the same polarity is stearyl to
A first single opposing magnetic pole rotor having first and second magnets magnetized on the side of the rotor core; The first and second magnets are surrounded by the even-numbered stator cores, and have opposite polarities to the first and second magnets, which are opposite to the even-numbered stator cores in the same direction as the first and second magnetic poles. A second single opposing magnetic pole rotor having third and fourth magnets magnetized on the stator core side , wherein the first single opposing magnetic pole generator comprises: The respective arc lengths of the first and second magnets of the pole rotor and the third arc length of the second single opposing pole rotor;
And the arc length of each of the fourth magnets is the same as the arc length of the even-numbered stator cores, and the first winding wound in a predetermined direction on the first stator core of the even-numbered stator cores A second winding wound in a direction opposite to the predetermined direction on a second stator core connected in series with the first winding and adjacent to the first stator core.
And a third winding connected in series with the second winding and wound in a predetermined direction on a third stator core adjacent to the second stator core, and a third winding. A fourth winding wound in a direction opposite to the predetermined direction on a third stator core and a fourth stator core adjacent to the third stator core, the first and second single opposing magnetic poles being connected in series; When the rotor is rotationally driven to generate a rotating magnetic field that is sequentially excited in the even-numbered stator cores according to the positions of the first, second, third, and fourth magnets, the first magnetic field is generated. In addition, the number of magnetic fluxes interlinking with one of the fourth windings increases, and the number of magnetic fluxes interlinking with another winding adjacent to the one winding decreases at the same time. A first series circuit for outputting a first rectangular wave electromotive force; A fifth winding wound in a direction opposite to the predetermined direction, and a sixth winding connected in series with the fifth winding and wound around the second stator core in the predetermined direction.
And a seventh winding connected in series with the sixth winding and wound around the third stator core in a direction opposite to the predetermined direction.
, And an eighth winding connected in series with the seventh winding and wound around the fourth stator core in the predetermined direction. When the rotating magnetic field is generated by sequentially rotating the stator cores in accordance with the positions of the first, second, third, and fourth magnets, the fifth to the fifth to fourth stator magnets are sequentially excited. By repeatedly increasing the number of magnetic fluxes interlinking with one of the eighth windings and decreasing the number of magnetic fluxes interlinking with another winding adjacent to the one winding, the first winding is repeated. A second series circuit that outputs a second rectangular wave electromotive force having the same period and a phase opposite to that of the rectangular wave electromotive force, and a rotational position for detecting a rotational position of the first and second single opposing magnetic pole rotors. Detection means, and the first series circuit from the first series circuit in response to a detection signal from the rotational position detection means. Switching means for selectively outputting a positive component of the square wave electromotive force and a positive component of the second rectangular wave electromotive force from the second series circuit alternately at every electrical angle of 180 °. A single opposed magnetic pole induction generator characterized by combining and outputting a DC electromotive force.