JP2009183060A - Single-phase magnet type generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a single-phase magnet type generator capable of efficiently reducing a rotational driving force required for making a rotor rotate. <P>SOLUTION: The single-phase magnet type generator 1 includes a rotor 2, having a plurality of N-pole permanent magnets 22N and S-pole permanent magnets 22S arranged alternately in the circumferential direction C, and with a stator 3, having a plurality of winding poles 4 wound with a winding 6 arranged in the circumferential direction C. The single-phase magnet type generator 1 is configured, to perform single-phase AC generation by the alternately and opposed arrangement of the N-pole permanent magnets 22N and the S-pole permanent magnets 22S, with respect to the plurality of winding poles 4. In the rotor 2, the N-pole permanent magnets 22N and the S-pole permanent magnets 22S are arranged at the same pitch P between centers in the circumferential direction C. In the stator 3, the pitches Q between centers, wherein the plurality of winding poles 4, are arranged in the circumferential direction C are made mutually different, in the pitch between centers between certain winding poles 4 and in the pitch between centers between the other winding poles 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a single-phase magnet generator configured to generate single-phase AC power.

The magnet generator has a rotor configured by arranging a plurality of N-pole and S-pole permanent magnets alternately in the circumferential direction, and a stator configured by arranging a plurality of poles wound with windings in the circumferential direction. is doing. For example, when the rotor rotates by receiving a rotational driving force from an engine or the like, a magnetic field generated by an N-pole permanent magnet and a magnetic field generated by an S-pole permanent magnet are alternately and alternately opposed to a plurality of poles. As a result, AC voltage is generated in the winding wound around the plurality of poles.
For example, in the generator of Patent Document 1, in a plurality of N-pole and S-pole magnets provided on the rotor, a first magnetic pole portion whose circumferential length is set to a first angle, and a circumferential length Forms a second magnetic pole portion set at a second angle. Further, in the stator, stator teeth equipped with a power generation coil are arranged at equal intervals in the circumferential direction. Thereby, the phase of the cogging torque generated between each tooth and the magnetic pole is shifted to reduce the cogging torque of the generator, and the driving means for driving the generator is miniaturized.

  Further, for example, in the three-phase magnet generator disclosed in Patent Document 2, a plurality of the same-phase voltages are formed by making the number of teeth of the stator wound with the power generation coil different from the number of magnetic poles of the permanent magnet fixed to the rotor. These teeth have the same polarity and are out of phase. Thereby, the driving torque by the engine is reduced, and the engine can be downsized. Note that the circumferential lengths (inter-center pitches) of the plurality of permanent magnets in the rotor and the inter-center pitches of the plurality of teeth in the stator are all equally spaced.

  However, in Patent Documents 1 and 2, in order to reduce the cogging torque generated in the generator and reduce the rotational driving force, the pitch (phase) between the centers of a plurality of poles (or teeth) in the stator is varied. There is no ingenuity. Therefore, it is not sufficient for effectively reducing the rotational driving force of the rotor.

JP 2003-134769 A JP 2001-112226 A

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a single-phase magnet generator that can effectively reduce the rotational driving force required to rotate the rotor. .

The present invention relates to a rotor in which a plurality of N-pole permanent magnets and S-pole permanent magnets are alternately arranged in the circumferential direction, and a stator in which a plurality of winding poles around which windings are wound are arranged in the circumferential direction. Have
A single-phase magnet generator configured to generate single-phase AC power by alternately arranging the N-pole permanent magnets and the S-pole permanent magnets with respect to the plurality of winding poles. In
The N-pole permanent magnet and the S-pole permanent magnet are arranged at the same center-to-center pitch in the circumferential direction,
The pitch between the centers in which the plurality of winding poles are arranged in the circumferential direction is a single pitch characterized in that the pitch between the centers of any of the winding poles and the pitch between the centers of the other winding poles are different from each other. It exists in a phase magnet type generator (Claim 1).

The single-phase magnet generator according to the present invention is devised in the arrangement state of a plurality of winding poles constituting the stator.
Specifically, in the present invention, a plurality of permanent magnets constituting the rotor are arranged at the same center-to-center pitch (inter-center angle) in the circumferential direction, whereas a plurality of windings constituting the stator are arranged. The poles are arranged such that the center-to-center pitch between any of the winding poles and the center-to-center pitch between the other winding poles are different from each other.

  As a result, when the rotor of a single-phase magnet generator is driven to rotate, the timing at which the circumferential center position of one of the winding poles matches the circumferential center position of the permanent magnet, and the other winding pole It is possible to shift the timing at which the center position in the circumferential direction coincides with the center position in the circumferential direction of the permanent magnet. Therefore, it is possible to disperse and reduce the cogging torque that is the torque that hinders the rotation of the rotor, which is generated when the winding pole receives the magnetic attraction force by the permanent magnet.

  Therefore, according to the single-phase magnet generator of the present invention, the rotational driving force required for rotating the rotor can be effectively reduced.

A preferred embodiment of the present invention described above will be described.
In the present invention, the single-phase magnet generator can be an outer rotor type in which a rotor is disposed on the outer peripheral side of the stator. In this case, the torque for driving the rotor is larger than that of the inner rotor type in which the rotor is arranged on the inner peripheral side of the stator. The effect obtained by making the pitch different from the center-to-center pitch between the line poles can be obtained more remarkably.
Note that the single-phase magnet generator may be an inner rotor type in which a rotor is disposed on the inner peripheral side of the stator.

In addition, in the state where the phase of the same-phase pole that is one of the plurality of winding poles matches the phase of the N-pole or S-pole permanent magnet, the other winding poles other than the same-phase pole Includes a phase advance pole whose phase is shifted to one side in the circumferential direction with respect to the phase of the N pole or S pole permanent magnet, and the other side in the circumferential direction with respect to the phase of the N pole or S pole permanent magnet. It is preferable to include a phase delay pole whose phase is shifted to the side.
In this case, by forming a phase advance pole and a phase delay pole with respect to the same phase pole, the cogging torque is further reduced, and the rotational driving force required to rotate the rotor is more effectively reduced. Can be made.
The amount of phase shift between the phase advance pole and the phase delay pole is determined within a range of angles smaller than the center-to-center pitch (inter-center angle) of the plurality of permanent magnets.

  In addition, the state where the phase of the in-phase pole coincides with the phase of the N-pole or S-pole permanent magnet means that the circumferential center position of the in-phase pole coincides with the circumferential center position of the N-pole or S-pole permanent magnet. It means the state that was done. The state where the phase of the phase advance pole is shifted to one side in the circumferential direction with respect to the phase of the N pole or S pole permanent magnet means that the center position in the circumferential direction of the phase advance pole is an N pole or S pole permanent magnet. It is in a state shifted to one side in the circumferential direction from the circumferential center position. Further, the state where the phase of the phase delay pole is shifted to the other side in the circumferential direction with respect to the phase of the N pole or S pole permanent magnet means that the center position in the circumferential direction of the phase delay pole is an N pole or S pole permanent magnet. This means a state shifted from the circumferential center position to the other circumferential side.

In addition to the winding poles, the stator includes a winding reduction pole in which the number of turns of the winding is reduced or the winding is not wound. And the number of winding reduction poles, the total number of poles is preferably the same as the number of poles of the rotor including the number of N-pole permanent magnets and the number of S-pole permanent magnets. (Claim 3).
In this case, by providing a winding reduction pole, the line area ratio (winding in the stator) caused by making the center pitch between any of the winding poles different from the center pitch between the other winding poles. A decrease in the ratio of the line) can be suppressed.

Further, in a state where the phase of the same-phase pole that is one of the plurality of winding poles matches the phase of the N-pole or S-pole permanent magnet, the phase of the winding reduction pole is N It is preferable that the phase of the pole or south pole of the permanent magnet matches.
In this case, a reduction in winding space due to the arrangement of the phase advance pole and the phase delay pole can be compensated for in the winding reduction pole.

In addition, the phase advance pole and the winding reduction pole are sequentially adjacent to one side in the circumferential direction with respect to the same phase pole, and the phase delay pole and the winding reduction pole are sequentially provided on the other side in the circumferential direction with respect to the same phase pole. One or a plurality of adjacent pole groups can be arranged on the stator.
In this case, the arrangement of each pole is appropriate, the reduction of the winding space due to the arrangement of the phase advance pole and the phase delay pole is compensated in the winding reduction pole, the line area ratio of the winding in the stator is It is possible to make it as close as possible to the line area ratio of the winding in the stator where there is no phase shift of the winding pole.

Preferably, the number of the in-phase poles, the number of the phase advance poles, the number of the phase lag poles, and the number of the winding reduction poles are the same. .
In this case, the line area ratio of the windings in the stator can be as close as possible to the line area ratio of the windings in the stator with no phase shift of the winding poles.

Further, the in-phase pole, the phase advance pole, the phase delay pole, and the winding reduction pole are arranged such that the winding reduction pole, the phase advance pole, It is preferable to repeatedly arrange the same phase pole and the phase delay pole in this order.
In this case, the arrangement order of the in-phase pole, the phase advance pole, the phase delay pole, and the winding reduction pole is appropriate, and the line area ratio of the winding in the stator is determined by the winding in the stator without the phase deviation of the winding pole. It can be equivalent to the line product ratio of the line.

Further, in the arrangement of a plurality of the same phase poles, the phase delay pole is adjacent to one side in the circumferential direction with respect to the winding reduction pole and the phase advance pole is adjacent to the other side in the circumferential direction with respect to the winding reduction pole. The stator may be formed by arranging one or a plurality of the set of poles.
Also in this case, the arrangement of the respective poles is appropriate, and the reduction of the winding space due to the arrangement of the phase advance pole and the phase delay pole can be compensated in the winding reduction pole.

Embodiments of the single-phase magnet generator according to the present invention will be described below with reference to the drawings.
Example 1
As shown in FIGS. 1 and 2, the single-phase magnet generator 1 of this example includes a rotor 2 in which a plurality of N-pole permanent magnets 22N and S-pole permanent magnets 22S are alternately arranged in the circumferential direction C. The stator 3 is formed by arranging a plurality of winding poles 4 around which the winding 6 is wound in the circumferential direction C. The single-phase magnet generator 1 generates single-phase AC power by alternately arranging N-pole permanent magnets 22N and S-pole permanent magnets 22S opposite to a plurality of winding poles 4. It is configured as follows.
As shown in FIG. 2, in the rotor 2, the N-pole permanent magnets 22 </ b> N and the S-pole permanent magnets 22 </ b> S are arranged at the same center-to-center pitch (inter-center angle) P in the circumferential direction C. In the stator 3, the center-to-center pitch at which the plurality of winding poles 4 are arranged in the circumferential direction C is the center-to-center pitch Q between any of the winding poles 4 and the center-to-center pitch Q between the other winding poles 4. Are different from each other.

Below, it demonstrates in full detail with reference to FIGS. 1-4 about the single phase magnet type generator 1 of this example.
As shown in FIG. 1, the single-phase magnet generator 1 of this example generates power by receiving the rotation of the crankshaft 7 of the engine of a vehicle (two-wheeled vehicle in this example). It is used to charge the battery and turn on the lamps. The electric power generated by the single-phase magnet generator 1 of this example can be used to drive an electric fuel pump for supplying pressurized fuel to a cylinder in the engine.
The single-phase magnet generator 1 of this example is of an outer rotor type that rotates the rotor 2 so as to face the outer periphery of the stator 3. The rotor 2 of this example is connected to the crankshaft 7 of the engine. The stator 3 is fixed to a housing 10 attached to an engine or the like.

  As shown in FIG. 2, the rotor 2 has N pole permanent magnets 22N and S pole permanent magnets 22S arranged alternately and repeatedly on the inner peripheral side of a cylindrical yoke 21 made of a soft magnetic material. It is configured. The number of poles of the rotor 2 of this example is 16 poles, and the rotor 2 of this example is formed by alternately arranging a total of eight N-pole permanent magnets 22N and S-pole permanent magnets 22S. Note that the number of poles of the rotor 2 can be, for example, 8 poles, 12 poles, 14 poles, and 18 poles in addition to 16 poles.

As shown in FIGS. 2 and 3, the stator 3 of this example is configured by arranging a winding 6 on a tooth 32 formed on an outer peripheral portion of a stator core 30 made of a soft magnetic material. The stator core 30 is formed by projecting a plurality of teeth 32 arranged in the circumferential direction C on the outer periphery of the core center portion 31. The stator core 30 can be configured by laminating steel plates in the axial direction.
The teeth 32 of this example are formed with a winding pole 4 in which the winding 6 is wound and a winding reduction pole 5 in which the winding 6 is not wound. The winding pole 4 is constituted by an in-phase pole 4A, a phase advance pole 4B, or a phase delay pole 4C.
The same phase pole 4 </ b> A is a winding pole 4 that is in phase with one of the plurality of permanent magnets 22 at the original position (reference position) 201 of the rotor 2, and at the original position 201 of the rotor 2. The circumferential center position B of the in-phase pole 4A coincides with the circumferential center position A of any permanent magnet 22.

As shown in the figure, the phase advance pole 4B is the original position 201 of the rotor 2 (in the state where the circumferential center position B of the same phase pole 4A coincides with the circumferential center position A of any permanent magnet 22). The circumferential pole position 4 refers to the winding pole 4 that is shifted to the circumferential one side C1 with respect to the circumferential center position A of any permanent magnet 22. The phase delay pole 4C is the center position in the circumferential direction at the original position 201 of the rotor 2 (when the circumferential center position B of the same phase pole 4A coincides with the circumferential center position A of any permanent magnet 22). B refers to the winding pole 4 that is shifted to the other circumferential side C2 with respect to the circumferential center position A of any permanent magnet 22.
The phase advance pole 4 </ b> B and the phase delay pole 4 </ b> C are phase-shifted to the circumferential one side C <b> 1 or the circumferential direction other side C <b> 2 within an angle range smaller than the center-to-center pitch (inter-center angle) P of the plurality of permanent magnets 22. It is provided. In addition, the phase advance amount of the phase advance pole 4B of this example to the circumferential direction one side C1 is the same as the phase delay amount of the phase delay pole 4C of this example to the circumferential direction other side C2.

The winding reduction pole 5 is formed in the same phase as the in-phase pole 4A, and the original position 201 of the rotor 2 (the circumferential center position B of the in-phase pole 4A is the circumferential center position of any permanent magnet 22). The center position B in the circumferential direction coincides with the center position A in the circumferential direction of one of the permanent magnets 22.
In this example, the total number of poles combined with the number of winding poles 4 and the number of winding reduction poles 5 is that of the rotor 2 combined with the number of N-pole permanent magnets 22N and the number of S-pole permanent magnets 22S. It is the same as the number of poles.

In the stator 3 of this example, the number of in-phase poles 4A, the number of phase advance poles 4B, the number of phase delay poles 4C, and the number of winding reduction poles 5 are the same. .
All of the winding poles 4 in this example, that is, all the in-phase poles 4A, the phase advance pole 4B, and the phase delay pole 4C have substantially the same number of turns of the winding 6, and the width in the circumferential direction C. Are the same. Each winding pole 4 in the stator 3 is formed with a winding 6 by sequentially winding a single continuous electric wire (enameled wire or the like) 61 having an insulating coating around each winding pole 4.
Further, as shown in FIG. 3, the in-phase pole 4A, the phase advance pole 4B, the phase delay pole 4C, and the winding reduction pole 5 of this example are wound from the circumferential direction one side C1 of the stator 3 toward the other side C2. The line reduction pole 5, the phase advance pole 4B, the same phase pole 4A, and the phase delay pole 4C are repeatedly arranged in this order.

Thereby, the phase advance pole 4B is adjacent to the circumferential one side C1 with respect to the same phase pole 4A, and the phase delay pole 4C is adjacent to the circumferential other side C2 with respect to the same phase pole 4A. Further, the winding reduction pole 5 is adjacent to the circumferential direction one side C1 of the phase advance pole 4B and the circumferential direction other side C2 of the phase delay pole 4C.
The winding reduction pole 5 is adjacent to the circumferential one side C1 of the phase advance pole 4B, so that the reduction of the winding space due to the phase advance of the phase advance pole 4B can be mitigated in the winding reduction pole 5. It is possible to suppress a reduction in the winding line product ratio due to the phase change of the phase advance pole 4B. Similarly, the winding reduction pole 5 is adjacent to the other circumferential side C2 of the phase delay pole 4C, thereby reducing the winding space reduction due to the phase delay of the phase delay pole 4C in the winding reduction pole 5. It is possible to suppress a reduction in the winding line product ratio due to the phase change of the phase delay pole 4C.

Further, the stator 3 of this example repeats four types of poles 4A, 4B, 4C, and 5 four times, and the total number of poles is 16 poles, which is the same as the pole number of the rotor 2.
In the standard stator, the winding directions of the windings 6 in adjacent poles are alternately different. In the stator 3 of this example, since the winding 6 is not applied to the winding reduction pole 5, the winding directions of the winding 6 of the in-phase pole 4A, the phase advance pole 4B, and the phase delay pole 4C are mutually different. Is different. That is, when the in-phase pole 4A is formed in a left-handed state (a state in which it advances while being wound counterclockwise), the phase advance pole 4B and the phase delay pole 4C are in a right-handed state (a state in which the phase advance pole 4A is advanced in a clockwise direction). To form. 2 and 3, the winding state of the winding 6 is indicated by an arrow (in FIG. 2, only a part of the winding state of the winding 6 is shown).

  Further, as shown in FIG. 2 and FIG. 3, a tooth flange 33 facing the permanent magnet 22 is formed at the outer peripheral tip of the teeth 32 constituting the same phase pole 4A, phase advance pole 4B and phase delay pole 4C. It is. The teeth flange portion 33A of the same phase pole 4A is formed to have a substantially uniform length with respect to the circumferential side one side C1 and the other side C2. The teeth flange 33B of the phase advance pole 4B is provided at a position shifted to the other circumferential side (phase delay side) C2 with respect to the tooth 32 in order to reduce the phase advance amount of the tooth 32 of the phase advance pole 4B. It is. The teeth flange 33C of the phase delay pole 4C is provided at a position shifted to one side (phase advance side) C1 in the circumferential direction with respect to the teeth 32 in order to reduce the phase delay amount of the tooth 32 of the phase delay pole 4C. It is.

  In this way, the teeth flange portion 33B of the phase advance pole 4B is formed to be shifted to the other circumferential side (phase delay side) C2, and the teeth flange portion 33C of the phase delay pole 4C is shifted to the one circumferential side (phase advance side) C1. Therefore, it is possible to prevent a short-circuit magnetic flux between the permanent magnets 22 generated by shifting the phases of the poles 4B and 4C, and to prevent the pole pitch of the stator 3 (the poles 4A and 4B). 4C, the pitch Q between the centers can be shifted. Further, the timing at which the winding pole 4 receives the magnetic attraction force by the permanent magnet 22 is adjusted by shifting the formation positions of the teeth flange portion 33B in the phase advance pole 4B and the teeth flange portion 33C in the phase delay pole 4C in the circumferential direction C. You can also

  In this example, when the rotor 2 in the single-phase magnet generator 1 is rotationally driven, the circumferential center position B of the same-phase pole 4A and the winding reduction pole 5 and the circumferential center position of any permanent magnet 22 The timing when A coincides with the timing when the circumferential center position B of the phase advance pole 4B coincides with the circumferential center position A of any permanent magnet 22, and the circumferential center position B of the phase delay pole 4C. The timing at which the circumferential center position A of the permanent magnet 22 coincides can be shifted. Therefore, it is possible to reduce the cogging torque that is the torque that hinders the rotation of the rotor 2 that is generated when the winding pole 4 receives the magnetic attractive force by the permanent magnet 22.

  Further, since the winding reduction pole 5, the phase advance pole 4B, the same phase pole 4A, and the phase delay pole 4C are repeatedly arranged in this order from the circumferential side one side C1 to the other side C2 of the stator 3, The line area ratio of the winding 6 can be made equal to the line area ratio of the winding 6 in the stator 3 with no phase shift of the winding pole 4. That is, the winding space by the arrangement of the winding reduction pole 5, the phase advance pole 4B, the same phase pole 4A, and the phase delay pole 4C is made equal to the case where only four conventional same phase poles are arranged in the circumferential direction. it can.

  Therefore, according to the single-phase magnet generator 1 of this example, it is possible to effectively reduce the rotational driving force required to rotate the rotor 2 by preventing the line area ratio in the stator 3 from decreasing. Can do.

Further, the winding pole 4 is formed by mixing not only the in-phase pole 4A but also the phase advance pole 4B and the phase delay pole 4C, thereby shifting the phase of the waveform of the AC voltage extracted from the winding 6 in the stator 3. be able to.
In FIG. 4, the horizontal axis represents time, and the vertical axis represents the voltage generated at both ends of the winding 6 in each winding pole 4A, 4B, 4C. 4 is a graph showing a phase shift of the AC voltages V1, V2, and V3 generated in (see FIG. 3). As shown in FIG. 4, the phase of the waveform of the AC voltage V2 generated at both ends of the winding 6 in the phase advance pole 4B can be advanced with respect to the waveform of the AC voltage V1 generated at both ends of the winding 6 in the same-phase pole 4A. The phase of the waveform of the AC voltage V3 generated at both ends of the winding 6 in the phase delay pole 4C can be delayed.

And in the single phase magnet type generator 1 of this example, from the both ends 611 of the electric wire 61 which comprises the coil | winding 6 arrange | positioned with respect to the whole winding pole 4, the same phase pole 4A, the phase advance pole 4B, and the phase It can be taken out as an alternating voltage obtained by synthesizing the voltage waveform of the delay pole 4C.
As a result, a multi-pole stator such as 16 poles can be wound, and the fundamental frequency of the generated AC voltage (single-phase AC voltage) can be increased. For example, when lighting the lamps, The light / dark cycle of the lighting state can be dispersed, and flickering of the lighting state can be suppressed.
The AC voltage generated by the single-phase magnet generator 1 of this example can charge the battery with a positive voltage, for example, and can light the lamps with a negative voltage.

(Example 2)
In this example, as shown in FIG. 5, the winding 6 is wound on the winding reduction pole 5 with a smaller number of turns than the number of turns of the winding 6 in the in-phase pole 4A, the phase advance pole 4B, and the phase delay pole 4C. This is an example of turning.
Also in this example, the winding pole 4 and the winding reduction pole 5 are arranged in the same order as described above. In this example, since the winding directions of the windings 6 in the adjacent poles 4 and 5 are opposite to each other, the in-phase pole 4A and the winding reduction pole 5 are in a right-handed state (forward while winding clockwise). In contrast, the phase advance pole 4B and the phase delay pole 4C are formed in a left-handed state (a state of moving forward while being wound counterclockwise).

In this example, the winding 6 in the winding reduction pole 5 is uniformly wound in the radial direction R, while each winding pole 4 (in-phase pole 4A, phase advance pole 4B, phase delay pole 4C). In the winding 6, the number of turns of the winding 6 is increased toward the outside in the radial direction R in order to form an appropriate gap between the adjacent winding poles 4.
Also in this example, the configuration of the other single-phase magnet generator 1 is the same as that of the first embodiment, and the same effects as those of the first embodiment can be obtained.

(Example 3)
In this example, as shown in FIG. 6, a plurality of in-phase poles 4A are arranged adjacent to each other, and a phase advance pole 4B, a phase delay pole 4C, and a winding reduction pole are arranged at appropriate positions in the circumferential direction C of the stator 3. 5 is an example.
In this example, in consideration of the space efficiency of the winding pole 4, the phase delay pole 4C is adjacent to the circumferential one side C1 with respect to the winding reduction pole 5, and the phase is placed on the circumferential other side C2 with respect to the winding reduction pole 5. The advance pole 4B is made adjacent. Further, in the stator 3 of this example, the pair of the phase advance pole 4B, the phase delay pole 4C, and the winding reduction pole 5 are arranged in a pair at the opposed positions in the stator 3, and the rest are the same phase pole 4A. .

More specifically, five in-phase poles 4A are arranged adjacent to each other at opposing positions in the stator 3, and a phase advance pole 4B, a phase delay pole 4C, and a winding reduction pole 5 are interposed therebetween. Are arranged at opposing positions in the stator 3. The number of poles of the rotor 2 is 16, and the total number of poles of the winding pole 4 and the winding reduction pole 5 in the stator 3 is also 16 poles.
Although the winding 6 is not wound around the winding reduction pole 5 of this example, the winding 6 may be wound around the winding reduction pole 5 with fewer turns than the winding pole 4. it can.
Also in this example, the configuration of the other single-phase magnet generator 1 is the same as that of the first embodiment, and the same effects as those of the first embodiment can be obtained.

Sectional explanatory drawing which shows the single phase magnet type generator in Example 1 in the state seen from the side. Cross-sectional explanatory drawing which shows the single phase magnet type generator in Example 1 in the state seen from the axial direction. Sectional explanatory drawing which expands and shows a part of single phase magnet type generator in Example 1 in the state seen from the axial direction. In Example 1, the horizontal axis represents time, and the vertical axis represents the voltage generated at both ends of the winding in each winding pole, indicating the phase shift of the AC voltage generated at both ends of the winding in each winding pole. Graph. Sectional explanatory drawing which shows the single phase magnet type generator in Example 2 in the state seen from the axial direction. Cross-sectional explanatory drawing which shows the single phase magnet type generator in Example 3 in the state seen from the axial direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Single phase magnet type generator 2 Rotor 22N N pole permanent magnet 22S S pole permanent magnet 3 Stator 4 Winding pole 4A In-phase pole 4B Phase advance pole 4C Phase delay pole 5 Winding reduction pole 6 Winding C Circumferential direction C1 circumferential one side C2 circumferential other side

Claims (8)

A rotor formed by alternately arranging a plurality of N-pole permanent magnets and S-pole permanent magnets in the circumferential direction; and a stator formed by arranging a plurality of winding poles wound with windings in the circumferential direction;
A single-phase magnet generator configured to generate single-phase AC power by alternately arranging the N-pole permanent magnets and the S-pole permanent magnets with respect to the plurality of winding poles. In
The N-pole permanent magnet and the S-pole permanent magnet are arranged at the same center-to-center pitch in the circumferential direction,
The pitch between the centers in which the plurality of winding poles are arranged in the circumferential direction is a single pitch characterized in that the pitch between the centers of any of the winding poles and the pitch between the centers of the other winding poles are different from each other. Phase magnet generator. In claim 1, in a state where the phase of the same-phase pole that is one of the plurality of winding poles matches the phase of the N-pole or S-pole permanent magnet,
The winding poles other than the same-phase pole include a phase advance pole whose phase is shifted to one side in the circumferential direction with respect to the phase of the N-pole or S-pole permanent magnet, and the N-pole or S-pole. A single-phase magnet generator, comprising a phase delay pole whose phase is shifted to the other side in the circumferential direction with respect to the phase of the permanent magnet. 3. The stator according to claim 1, wherein a winding reduction pole in which the number of turns of the winding is reduced or the winding is not wound is arranged in the stator in addition to the winding pole. ,
The total number of poles combined with the number of winding poles and the number of winding reduction poles is the number of poles of the rotor combined with the number of N pole permanent magnets and the number of S pole permanent magnets. A single-phase magnet generator characterized by being the same.   In Claim 3, in the state where the phase of the same-phase pole which is one of the plurality of winding poles matches the phase of the N-pole or S-pole permanent magnet, the phase of the winding reduction pole is A single-phase magnet generator that matches the phase of the N-pole or S-pole permanent magnet.   5. The phase advance pole and the winding reduction pole are sequentially adjacent to one side in the circumferential direction with respect to the same phase pole, and the phase delay pole and the winding on the other side in the circumferential direction with respect to the same phase pole. A single-phase magnet generator in which one or a plurality of sets of poles in which line-reducing poles are sequentially adjacent are arranged.   6. The number of arrangements of the same phase poles, the number of arrangements of the phase advance poles, the number of arrangements of the phase delay poles, and the number of arrangements of the winding reduction poles according to any one of claims 3 to 5. A single-phase magnet generator characterized by   7. The in-phase pole, the phase advance pole, the phase delay pole, and the winding reduction pole according to claim 6, wherein the winding reduction pole, the phase advance are directed from one side in the circumferential direction of the stator to the other side. A single-phase magnet generator, wherein a pole, the same phase pole, and the phase delay pole are repeatedly arranged in this order.   5. The plurality of the same-phase poles according to claim 4, wherein the phase-lag pole is adjacent to one side in the circumferential direction with respect to the winding reduction pole and the phase lead to the other side in the circumferential direction with respect to the winding reduction pole. A single-phase magnet generator in which one or a plurality of sets of poles adjacent to each other are arranged.

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