JP5349258B2 - Power generator for distributed power supply - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce working man-hours related to windings, to miniaturize a permanent magnet generator, and to decrease a cost of the permanent magnet generator or an expense of a power generation device, in the power generation device for distributed power supply which takes out an output approximate to an maximum output from the permanent magnet generator which is driven by a wind turbine or a hydraulic turbine. <P>SOLUTION: The permanent magnet generator 3 is driven by the wind turbine 1 or the hydraulic turbine. Tooth windings wound around a plurality of stator teeth of the permanent magnet generator 3 are made to be stator windings by connecting them in series in units of tooth windings. AC output terminals U2, V2 and W2 of the stator windings of the permanent magnet generator 3 are connected to a second rectifier 7 via a second reactor 5 to obtain a DC output and also tap output terminals U1, V1 and W1 connected to connecting portions between the tooth windings of the stator windings are connected to a first rectifier 6 via a first reactor 4 to obtain a DC output. The DC output of the second rectifier and the DC output of the first rectifier are added to each other, and output to an external DC power supply 13. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a power generator for a distributed power source for extracting maximum output from wind or water having energy proportional to the cube of the flow velocity, using a wind turbine or a generator driven by the turbine, and in particular, PWM. The present invention relates to a PWM converter-less power generator for a distributed power source that always takes out a rough wind turbine maximum output from wind and charges a storage battery without using a converter.

The present applicant has previously proposed a power generator for a distributed power source for obtaining an approximate maximum output of a wind turbine by converting AC to DC without using a PWM converter from a permanent magnet generator driven by a wind turbine or a water turbine. (See, for example, Patent Documents 1, 2, 3, and 4).
In the above-mentioned Patent Document 1, output terminals of a plurality of windings that output different induced voltage effective values of a permanent magnet generator are connected to individual diode rectifiers via individual reactors, and the individual diodes are connected. The DC output of the rectifier is added and output to the outside. Further, the devices described in Patent Documents 2 and 3 are configured so that a saturated reactor is connected in series with the winding in the device described in Patent Document 1.

Such prior art will be described with reference to FIGS.
FIG. 6 shows a main circuit connection diagram of a conventional power generator for a distributed power source connected to a wind turbine.
In FIG. 6, 1 is a windmill, 20 is a conventional power generator for distributed power supply, 31 is a permanent magnet generator, 4 and 5 are first and second reactors, and 6 and 7 are first and second rectifiers, 11 is a positive output terminal, 12 is a negative output terminal, and 13 is a storage battery. In FIG. 6, the permanent magnet type generator 31 has two types of windings and shows a three-phase case.

Hereinafter, the power generator for a distributed power source shown in FIG. 6 will be described.
In FIG. 6, the AC output terminal W <b> 1 of the first winding with a small number of turns of the permanent magnet generator 31 and a low induced voltage effective value is connected to the first reactor 4 and further to the first rectifier 6. The
The AC output terminal W2 of the second winding having a large number of turns is connected to the second reactor 5 and further connected to the second rectifier 7. Here, the first and second windings wound in the conventional permanent magnet generator 31 are insulated from each other.
The direct current sides of the first and second rectifiers 6 and 7 are connected in parallel to the positive output terminal 11 and the negative output terminal 12, and the total output of each winding is charged in the storage battery 13.

A method for obtaining a rough maximum wind turbine output from the conventional distributed power generator 20 configured as described above will be described below.
FIG. 5 is a diagram for explaining the outline of the wind turbine rotation speed versus the wind turbine output characteristic when the wind speed is used as a parameter. In FIG. 5, the horizontal axis represents the wind turbine speed, and the vertical axis represents the wind turbine output.
When the shape of the windmill and the wind speed U are determined, the windmill output P with respect to the windmill rotation speed N is uniquely determined. For example, the windmill output P with respect to the wind speed Ux and Uy has the characteristics shown in FIG. And the peak of the windmill output P with respect to various wind speeds becomes like the maximum output curve Pt which has a cube property with respect to rotation speed, as shown in FIG.
That is, when the wind speed is Ux in the wind turbine rotation speed vs. wind turbine output characteristic of FIG. 5, the wind turbine maximum output is obtained at the wind turbine rotation speed Nx as indicated by the intersection Sx of the wind turbine output curve of the wind speed Ux and the maximum output curve Pt. Px. Further, when the wind speed is Uy, the windmill maximum output Py at the wind speed Uy is obtained at the windmill rotational speed Ny, as indicated by the intersection Sy of the windmill output curve of the wind speed Uy, the maximum output curve, and Pt.

That is, when the way of viewing the maximum output curve in FIG. 5 is changed, in order to obtain the maximum output from the wind, when the wind turbine rotation speed N is determined, the wind turbine output at that time = the permanent magnet generator input as the permanent magnet generator input. Is uniquely determined to be a value on the maximum output curve Pt.
In the following description, it is assumed that the permanent magnet generator has no loss and that the permanent magnet generator input is equal to the permanent magnet generator output.

Figure 4 is an explanatory view when the prior art to connect the DC output of the power generator 2 0 for distributed power source of interest to a constant voltage source of the storage battery or the like, and the number of rotational wind turbine speed and the permanent magnet generator the same It is.
In FIG. 4, the horizontal axis represents the wind turbine speed, the vertical axis represents the output, Pt represents the maximum output curve illustrated in FIG. 5, and Ps represents the approximate output curve obtained by the power generator for the distributed power source of FIG.
Each output of the first and second windings of the permanent magnet generator 31 of the dispersed power source power generator 2 0 shown in FIG. 6, the difference of the induced voltage effective value of each winding, and the windings internal inductance and the output Due to the difference in voltage drop due to the inductances of the reactors 4 and 5 connected to the terminals W1 and W2, P1 and P2 shown in FIG.

When the wind turbine speed N is low, the storage battery 13 is not charged because the generated voltage of the first and second windings in the conventional permanent magnet generator 31 is lower than the battery voltage Vb.
However, when the wind turbine rotational speed N rises and becomes near N2, the current starts to flow through the second winding, and the current increases as the wind turbine rotational speed N increases, and the output from the second winding is P2. become.
At this time, even if the wind turbine rotation speed N is increased and the induced voltage is increased, the storage battery voltage is substantially constant, but the inductance of the second winding and the inductance by the second reactor 5 are proportional to the frequency. At the same time, the output P2 only increases gradually.
The induced voltage of the first winding is lower than the induced voltage of the second winding, but the output starts to be taken when the rotational speed N further increases. However, a large output can be obtained because the internal inductance of the first winding and the inductance of the first reactor 4 are small.
Thereby, the total output obtained by adding the outputs P1 and P2 of the first and second windings in the permanent magnet generator 31 becomes an approximate output curve Ps shown in FIG. That is, by selecting the voltages generated by the first and second windings and the values of the reactors 4 and 5, an output approximate to the maximum output curve Pt can be obtained.

JP 2004-64928 A JP 2005-110474 A JP 2006-34038 A JP 2007-97272 A

However, when an approximate maximum wind turbine output is obtained from the above-described distributed power generator, the conventional permanent magnet generator has two or more types of windings that are insulated from each other.
For this reason, the winding work man-hours of the permanent magnet generator and the insulation work between the windings increase, and the winding storage space increases, which increases the volume of the permanent magnet generator. It was.
The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the man-hours related to the winding of the conventional permanent magnet type generator and the volume of the permanent magnet type generator, thereby reducing the permanent magnet type. It is an object of the present invention to provide a power generator for a distributed power source that can reduce the price of the generator and hence the equipment price.

In the present invention, the above problem is solved as follows.
In a distributed power generator for obtaining a DC output by rectifying an AC voltage generated from a stator winding of a permanent magnet generator driven by a windmill or a water turbine by a rectifier, a plurality of the permanent magnet generators are fixed. Each tooth winding wound around the child teeth is connected in series for each tooth winding to form a stator winding.
The permanent magnet generator has three phases, the number of stator teeth is an integer multiple of 18, and the stator winding is connected in series by connecting an integer multiple of 6 of the teeth winding in series. A second rectifier is connected via a second reactor to an AC output terminal connected to the portion of the stator winding that generates the maximum induced voltage, and a direct current is output. A first rectifier is connected to a tap output terminal connected to a connection portion between the tooth windings via a first reactor to output a direct current, a direct current output of the alternating current output terminal and a direct current output of the tap output terminal. Is added to the external DC power supply.
The tap output terminal of each phase is connected to a connection portion where the induced voltage is 2/3 of the maximum induced voltage, and the teeth of each phase are set so that the armature magnetomotive force due to the tap output of each phase is axisymmetric. The windings are connected.
Then, the number of turns of the stator windings and the values of the first and second reactors are selected so that the output characteristics approximate to the wind turbine rotation speed versus the wind turbine maximum output characteristics determined by the shape of the wind turbine.

In the present invention, the following effects can be obtained.
(1) In the present invention, the stator winding of the tapped permanent magnet generator is constituted by one kind of winding, and a high induced voltage effective value using the induced voltage of all windings of this winding is output as an alternating current. The stator winding is provided with a tap so that a low induced voltage effective value is generated from the tap output terminal.
A distributed power generator configured by a combination of a tapped permanent magnet generator configured as described above, a reactor, and a rectifier has a large inductance value connected in series to an AC output terminal that generates a high induced voltage effective value. A small DC output can be generated from the low rotational speed region of the tapped permanent magnet generator by the second reactor and the second rectifier, and the tap output terminal generates a low induced voltage effective value. A first reactor having a small inductance value and a first rectifier connected in series can generate a large direct current output from a tapped permanent magnet generator from a rotational speed region higher than the rotational speed region, Appropriately select the number of turns of the stator winding, the connection position of the tap output terminal, and the first and second reactor values. By, it is possible to obtain an output characteristic which approximates to the wind turbine revolution speed and the wind turbine maximum output characteristic.
In particular, the work man-hours involved in the winding of the permanent magnet generator to the stator winding is one kind is reduced, further, reduce the body volume of the permanent magnet generator to the winding storage space is reduced Thus, it is possible to reduce the generator price and thus the price of the power generator for the distributed power source.
(2) Using a permanent magnet generator having a three-phase winding, the number of stator teeth is an integral multiple of 18, and an integral multiple of 6 of the teeth winding is connected in series to form a Y-connected stator winding. The tap output terminal of each phase is connected to a connection portion where the induced voltage is 2/3 of the maximum induced voltage, and the armature magnetomotive force due to the tap output of each phase is axisymmetric. By connecting the tooth windings of the phases, the difference between the maximum output curve Pt and the approximate output curve Ps can be reduced. Moreover, vibration and noise can be reduced by magnetically balancing the connection of each tooth winding wound around each stator tooth.

It is a figure explaining the main circuit of the power generator for distributed power sources concerning the example of the present invention. It is a figure explaining winding arrangement | positioning of the permanent magnet type generator of the generator device for distributed power sources which concerns on the Example of this invention. It is a figure explaining the winding connection of the permanent magnet type generator of the power generator for distributed power sources concerning the example of the present invention. It is a figure for demonstrating the output to constant voltage sources, such as a battery, of the generator device for distributed power supplies. It is a figure explaining the outline | summary of a windmill rotation speed versus windmill output characteristic when a wind speed is made into a parameter. It is the main circuit diagram of the conventional generator device for distributed power supplies.

The present invention is a power generator for a distributed power source that is driven by a wind turbine or a water turbine to obtain a direct current output from a stator winding of a permanent magnet generator. For the sake of illustration, teeth windings wound around a plurality of stator teeth of a permanent magnet generator are connected in series for each teeth winding to form a stator winding, and a tooth that generates the maximum induced voltage of the stator winding. The AC voltage is taken out from the winding end, and the AC output is taken out from the tap output terminal taken out from the connection portion between any teeth windings of the stator winding, and the AC voltage is supplied to the second and first reactors, respectively. To the second and first rectifiers to obtain a direct current output, and by adding these, an output characteristic approximate to the wind turbine rotational speed versus the maximum wind turbine output characteristic is obtained. Invention For body examples will be described.
In addition, although the case where it applies to a windmill below is demonstrated, it is applicable similarly to a watermill.

FIG. 1 is a diagram showing a main circuit configuration of a distributed power generation apparatus according to an embodiment of the present invention. In the figure, 1 is a windmill, 2 is a generator for a distributed power source, 3 is a permanent magnet generator with a tap rotated by the windmill 1, 4 and 5 are first and second reactors, and 6 and 7 are first and second reactors. The second rectifier, 11 is a positive output terminal, 12 is a negative output terminal, and 13 is a storage battery.
In this example, the permanent magnet generator 3 has three phases, the three-phase windings M1 to M3 have taps A to C, U1, V1, and W1 are tap output terminals, and U2, V2, and W2 are This is an AC output terminal, and the same reference numerals as those in FIG. 6 represent the same components.

Hereinafter, FIG. 1 will be described.
Here, in order to easily explain how to take out the tap output terminals U1, V1, and W1, in the stator windings M1 to M3 of the tapped permanent magnet generator 3, windings wound around each tooth (see FIG. 2). In the following description, it is assumed that the wire (referred to as a tooth winding) has the same winding diameter and the same number of turns and has three-phase concentrated winding. Therefore, the number of stator teeth and the number of teeth windings for each phase are the same, and the total number of teeth and the number of teeth windings are multiples of 3.
In this embodiment, teeth windings of each phase concentratedly wound on a plurality of stator teeth of the tapped permanent magnet generator 3 are connected in series for each tooth winding, and Y-connection as shown in FIG. Of the stator winding.
In this Y-connected stator winding, the second reactor is connected to the AC output terminals U2, V2, and W2 taken out from the ends of the tooth windings that generate the maximum induced voltage by adding the induced voltages of the respective teeth windings. 5 are connected in series. A second rectifier 7 is connected in series to the second reactor 5, and the AC output is rectified to obtain a DC output.

Further, in the Y-connection stator winding of the tapped permanent magnet generator 3, the first reactor 4 is connected to the tap output terminals U1, V1, W1 taken out from the connection portions between arbitrary teeth windings of each phase. Connect in series. A first rectifier 6 is connected in series to the first reactor 4, and an AC output obtained from the tap output terminal is rectified to obtain a DC output.
The induced voltage value generated by the tap output terminals U1, V1, and W1 thus taken out is greater than the induced voltage value generated by at least one tooth winding than the induced voltage value generated by the AC output terminals U2, V2, and W2. The voltage value becomes low.
The power generator 2 for the distributed power source adds the DC output of the AC output terminals U2, V2, W2 and the DC output of the tap output terminals U1, V1, W1 to the outside through the positive output terminal 11 and the negative output terminal 12. Output to the storage battery 13 which is a direct current power source.

The operation of the power generator for a distributed power source in FIG. 1 is the same as that described with reference to FIG. 6. As described above, when the wind turbine rotational speed N is low, the AC output terminals U2, V2, W2, and the tap output. Since the voltage generated at the terminals U1, V1, and W1 is lower than the battery voltage Vb, the storage battery 13 is not charged.
However, when the wind turbine rotational speed N increases and becomes near N2, current begins to flow through the AC output terminals U2, V2, and W2. The current increases as the wind turbine rotational speed N increases, and the AC output terminals U2, V2, and W2 The output by is as shown in P2 of FIG. Here, even if the wind turbine rotation speed N increases and the induced voltage increases, the output P2 only increases gradually because the inductance of the winding and the inductance by the second reactor 5 are proportional to the frequency.
The voltage generated at the tap output terminals U1, V1, and W1 is lower than the induced voltage at the AC output terminals U2, V2, and W2, but the output begins to be generated when the rotational speed N further increases. However, since the internal inductance of the winding and the inductance of the first reactor 4 are small, a large output can be obtained.
Thus, the total output obtained by adding the outputs P1, P2 of the AC output terminals U2, V2, W2 and the tap output terminals U1, V1, W1 of the permanent magnet generator 3 is the approximate output curve Ps shown in FIG. Become.

Although the above has been described with respect to three phases, a permanent magnet generator with a tap can be similarly configured with a single phase, two phases, and the total number of phases.
Further, for example, even in a three-phase distributed winding, a single-phase winding corresponding to one pole pair is handled in the same manner as the tooth winding of the concentrated winding described above, so that a tapped permanent magnet generator is similarly configured. it can.

FIG. 2 is a view for explaining a three-phase tooth winding arrangement in the case where the permanent magnet generator of the power generator for distributed power source shown in FIG. 1 is configured with a 12 pole 18 teeth tapped permanent magnet generator. FIG.
In the figure, 21 is a rotor having a permanent magnet, 22 is a stator, 23 is a tooth, 24 is a tooth winding, and 18 teeth windings (R1 to T6) are shown.
FIG. 3 is a diagram for explaining the formation of a Y-connection stator winding by Y-connecting each tooth winding 24 of FIG.
In the figure, each tooth winding 24 (R1 to T6) represents the same component as in FIG. 2, U2, V2, and W2 are AC output terminals, and U1, V1, and W1 are tap output terminals, which are the same as FIG. Represents a component.

Hereinafter, FIGS. 2 and 3 will be described with reference to FIG.
Since the maximum output curve Pt of the windmill has a cube characteristic with respect to the rotational speed as shown in FIG. 4, in the wind power generator, the windmill rated rotational speed Nz (the value of the rotational speed of the windmill with respect to the rated wind speed). It is sufficient to start power generation at a rotational speed of about 1/3.
That is, at the rotational speed of 1/3 of the wind turbine rated rotational speed Nz, the wind turbine output is about (1/3) ³ = 1/27 of the wind turbine output at the rated rotational speed. The efficiency does not decrease so much.
Therefore, the wind turbine rotation speed N2 at which the generator voltage exceeds the storage battery voltage and the current flows to start power generation is determined to be about 1/3 of the rated wind turbine rotation speed Nz. It should be noted that power generation may be started at a rotational speed that is about 1/4 of the wind turbine rated rotational speed Nz. In this case, at the rotational speed that is 1/4 of the wind turbine rated rotational speed Nz, the wind turbine output is the rated rotational speed. Since only 1/64 of the wind turbine output at can be obtained, it is meaningless.

Further, as a result of examination by simulation or the like, the difference between the maximum output curve Pt and the approximate output curve Ps near the wind turbine rated speed N1 shown in FIG. 4 is reduced, and the approximate output curve Ps is not made larger than the maximum output curve Pt by the reactor. In order to achieve this, it has been found that the wind turbine rotational speed N1 should be a ratio of about 3/5 (= N1 / Nz) with respect to the rated wind turbine rotational speed Nz as shown in FIG.
From the above, in order to realize the approximate output curve Ps as shown in FIG. 4, the present embodiment has the configuration of the twelve pole 18 teeth tapped permanent magnet generator 3 shown in FIG.

In FIG. 2, the same number of turns is wound around each tooth 23 of the stator 22 of the tapped permanent magnet generator 3 to form each tooth winding.
U-phase teeth winding (R1 to R6), V-phase teeth winding (S1 to S6), and W-phase teeth winding (T1 to T6) are Y-connected using neutral point S as shown in FIG. Is done.
A high effective value of the induced voltage obtained by using the tooth windings (R1 to T6) of all the phases is output from the AC output terminals U2, V2, and W2.
By connecting the tap output terminal U1 to the connection part A of the R5 tooth winding and the R3 tooth winding of the U-phase tooth winding, and adding the induced voltages of the four tooth windings to output, the AC output An induced voltage effective value lower than the induced voltage effective value of the terminal U2 is output.
Similarly, for the V phase and the W phase, low induced voltage effective values are output from the tap output terminals V1 and W1.

In FIGS. 1 and 3, the AC output terminals U <b> 2, V <b> 2, W <b> 2 are DC output from the second rectifier 7 to the storage battery 13 through the second reactor 5. That is, the output P2 shown in FIG. 4 is output.
The tap output terminals U 1, V 1, W 1 are DC output from the first rectifier 6 to the storage battery 13 through the first reactor 4. That is, the output P1 shown in FIG. 4 is output. The total output of the outputs P1 and P2 becomes the output of the power generator 2 for distributed power supply.

In the connection example of the tooth windings shown in FIG. 3, the induced voltage effective value of the tap output terminals U1, V1, W1 is 2/3 of the value of the AC output terminals U2, V2, W2. Therefore, it is possible to generate the AC output terminal induced voltage and the tap output terminal induced voltage that can satisfy the wind turbine rotational speeds N2 and N1 for starting power generation as shown in FIG.
Further, in the connection of each phase tooth winding in FIG. 3, the currents flowing through the tap output terminals are the teeth windings R1, S1, T1 and R 2 so that noise caused by the unbalance of the armature magnetomotive force is not generated. , S2 and T2, and the pairs of teeth windings R4, S4 and T4 and R5, S5 and T5, so that axial symmetry is maintained.

In this way, the stator teeth of the tapped permanent magnet generator are set to 18 (the number of windings per phase is 6), and the induced voltages for the four teeth windings are added to each phase tap output terminal. , The induced voltage effective value of the tap output terminals U1, V1, W1 can be reduced to 2/3 of the AC output terminals U2, V2, W2, and the difference between the maximum output curve Pt and the approximate output curve Ps. Thus, vibration and noise can be reduced by magnetically balancing the connections of the tooth windings 24 wound around the stator teeth 23.
The stator teeth are an integral multiple of 18 so that the number of teeth per phase is an integral multiple of 6, and windings wound around the integer multiples of 6 are connected in series to provide AC output. Terminals U2, V2, and W2 are added, and induction voltages corresponding to four integer multiples of the teeth winding are added to form tap output terminals U1, V1, and W1, and induction of tap output terminals U1, V1, and W1 The voltage may be approximately 2/3 of the AC output terminals U2, V2, and W2.

In addition, although the divergence between the maximum output curve Pt and the approximate output curve Ps is slightly increased, there are the following methods as a method of configuring each phase tap output terminal and realizing the power generator for a distributed power source of the present invention.
When the stator teeth of the tapped permanent magnet generator is an integer multiple of 24, the induced voltage effective value of the tap output terminal obtained by adding the induced voltages of the six integer multiple teeth windings is AC A tap output terminal having a value that is 3/4 of the value of the output terminal can be configured.
Even when the stator tooth is an integer multiple of 30, the induced voltage effective value of the tap output terminal obtained by adding the induced voltages of the six integer multiple teeth windings is 3 than the value of the AC output terminal. A tap output terminal having a value of / 5 can be configured.
When the stator teeth are an integral multiple of 42, the induced voltage effective value of the tap output terminal obtained by adding the induced voltages of eight integer multiple teeth windings is 4 / less than the value of the AC output terminal. A tap output terminal having a value of 7 can be configured.
Even when the stator tooth is an integer multiple of 48, the induced voltage effective value of the tap output terminal obtained by adding the induced voltages of ten integer multiple teeth windings is 5 than the value of the AC output terminal. A tap output terminal having a value of / 8 can be configured.
In such a case, the magnetic balance can be similarly achieved.

In the above embodiment, the case where the AC output terminals U2, V2, W2 and the tap output terminals U1, V1, W1 are all three-phase output has been described. However, only the AC output terminal, which is a small output, is configured in a single phase. It is also possible to reduce the number of parts and to configure the tap output terminal, which is a large output, with three phases as before.
For example, in FIG. 1, a single-phase reactor and a single-phase rectifier are connected to only the AC output terminals U2 and V2 to obtain a DC output, and the tap output terminals U1, V1, and W1 are as shown in FIG. Alternatively, a three-phase reactor and a three-phase rectifier may be connected to obtain a DC output. At this time, no current flows through the tooth windings T3 and T6 of FIGS. 2 and 3, but the magnetic balance in the radial direction is not lost.

In the above embodiment, the case where there is one type of tap output terminal has been described. However, the tap output terminal is taken out from two places, and three types of induced voltage effective values including the AC output terminal are generated. You can also.
For example, in FIG. 3, the approximate output curve Ps is represented by the maximum output curve Pt, although it is expensive by taking out the second tap output terminal from the connection portion of the tooth windings R2 and R4, S2 and S4, and T2 and T4. A power generator for a distributed power source with close characteristics can be realized.
Furthermore, as shown in Patent Documents 2 and 3, a saturated reactor can be used as a reactor. By configuring in this way, the approximate output curve Ps is further brought closer to the maximum output curve Pt, and a larger wind turbine output is obtained. Can also be obtained.
Further, as shown in Patent Document 4, it is also applicable to a method of connecting capacitors in series in order to prevent the gap magnetic flux from decreasing and increase the magnetic flux.

As described above, the stator winding of the tapped permanent magnet generator according to the present invention is composed of one type of winding, and a high induced voltage effective value is obtained from the AC output terminal using all windings of each phase of this winding. In addition, a tap is provided at the connection part of this winding to generate a low induced voltage effective value from the tap output terminal, thereby reducing the work man-hours related to the winding and reducing the size of the device. The same action as the power generation device for a distributed power source proposed previously by humans can be achieved.
As a result, the power generator for a distributed power source according to the present invention can be applied regardless of single-phase or three-phase, and is extremely useful in practice.
Furthermore, since the water turbine installed in the flow of a river or a tidal current also has a cube output characteristic with respect to the flow velocity, it is applicable not only to a windmill but also to a water turbine.

DESCRIPTION OF SYMBOLS 1 Windmill 11 Positive side output terminal 12 Negative side output terminal 13 Storage battery 2 Power generation apparatus for distributed power supplies 20 Conventional power generation apparatus for distributed power supplies 21 Rotor having permanent magnets 22 Stator 23 Teeth 24 Teeth winding 3 Permanent magnet type with tap Generator 4 First reactor 5 Second reactor 6 First rectifier 7 Second rectifier

Claims (1)

A generator for a distributed power source that rectifies an AC voltage generated from a stator winding of a permanent magnet generator driven by a windmill or a water turbine by a rectifier to obtain a DC output,
Each tooth winding wound around a plurality of stator teeth of the permanent magnet generator is connected in series for each tooth winding to form a stator winding,
The permanent magnet generator has three phases, the number of stator teeth is an integer multiple of 18, and the stator winding is connected in series by connecting an integer multiple of 6 of the teeth winding in series. And
Connecting a second rectifier through a second reactor to an AC output terminal connected to the portion of the stator winding that generates the maximum induced voltage, and outputting a direct current;
A first rectifier is connected to a tap output terminal connected to a connection portion between the teeth windings of the stator winding via a first reactor, and a direct current is output.
Add the DC output of the AC output terminal and the DC output of the tap output terminal to output to an external DC power supply ,
The tap output terminal of each phase is connected to a connection portion where the induced voltage is 2/3 of the maximum induced voltage, and the teeth of each phase are set so that the armature magnetomotive force due to the tap output of each phase is axisymmetric. A power generator for a distributed power source, wherein windings are connected .

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