JP2003333814A - Setting-changeable generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a setting-changeable generator which can be set easily into each type of a generator by the easy change of wirings by making an alternator common. <P>SOLUTION: This setting-changeable generator is a switchable one which is so arranged as to output three-phase power or single-phase three-line power from an output terminal block 22 by switching the connection of armature coils of a three-phase alternator equipped with a pair of the armature coils 1-6 by means of a switch 10. The setting-changeable generator can be set into a generator of a type 1 which can switch an output between the three-phase output and the single-phase three-line power and a generator of a type 2 which can switch the output of three-phase power into two stages by the change of the connecting way of wirings connected among each armature coil 1-6 of the alternator, the switch 10, and the output terminal block 22. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a generator whose setting can be changed as a generator of a different type only by changing wiring and can be shipped from the factory.

[0002]

2. Description of the Related Art A portable generator used at a construction site or the like has a generator voltage that can be switched so as to correspond to different loads such as equipment and devices to be operated. There are the following switching patterns. For example, as the type 1, it is possible to switch between three-phase three-wire and single-phase three-wire. This can obtain 200V three-phase power when connected to three-phase three-wire, and single-phase three
It is a generator that can obtain 100V and 200V single-phase power at the same time by switching to the line. On the other hand, there is a type 2 that can switch between 200V and 400V of three-phase three-wire, which is 200V and 400V.
It is a generator that can obtain each of the three-phase electric power. Therefore, these will be briefly described below.

FIG. 7 shows a voltage vector diagram of an armature coil constituting an alternator of a type 1 generator. This is obtained by dividing the V-phase of the U-phase, V-phase, and W-phase armature coils 101 to 104 into two.
When the armature coils 102 and 103 are connected in series as shown in (a), three-phase electric power of 200 V is obtained, and the connection is switched to change the V-phase armature coil 103 as shown in FIG. 7 (b).
Is connected to the neutral point O in the opposite direction, 100/20
0V single phase three wire power is obtained.

Next, FIG. 8 shows a type 2 generator.
It is the thing which shows the voltage vector diagram of the armature coil which comprises the alternator. This is composed of a pair of armature coils 201 to 206 for U-phase, V-phase and W-phase,
When connected in parallel as shown in FIG. 8 (a), three-phase power of 200V is obtained, and when the connection is switched and connected in series as shown in FIG. 8 (b), three-phase power of 400V is obtained.

[0005]

In the past, different types of generators were produced separately, such as the use of different alternators as described above. However, for generators used in construction site offices and event venues, while the demand for Type 1 that allows switching between three-phase three-wire 200V and single-phase three-wire 100 / 200V is increasing, Three-phase three-wire 200V and 4
The current situation is that there is little demand for type 2 that can switch 00V.

That is, in particular, the demand for single-phase three-wire 100V / 200V specifications of 10 kVA or more is increasing, while conversely, the demand of 400 V specifications is decreasing as for generators of 20 kVA or more. Therefore, if these two different types of generators were manufactured using their respective production lines, the type 2 generator, which has a particularly low demand, was a cause of deteriorating profitability.

Therefore, in order to solve such a problem, it is an object of the present invention to provide a alternator in which the alternator is made common and the setting can be easily set for each type of generator by a simple wiring change. To do.

[0008]

SUMMARY OF THE INVENTION In a generator whose setting can be changed according to the present invention, a three-phase alternator having a pair of armature coils with the same number of turns in each phase is used. The armature coil is connected to the neutral point, and the other end of the armature coil and the other armature coil have contacts at both ends, and the remaining one phase has contacts at both ends of the pair of armature coils. In the switchable generator configured to output three-phase power or single-phase three-wire power from the output terminal block by switching the connection of the armature coil by a switching device, each of the alternators is provided. Three-phase power and single-phase three-phase power can be obtained by changing the connection method of the wiring connected between the armature coil, the switching device and the output terminal block.
It is characterized in that it is set to a type 1 generator capable of switching output with line power or a type 2 generator capable of switching output of three-phase power in two stages.

In the generator whose setting can be changed according to the present invention, in the generator of type 1, the alternator has a star-shaped connection in parallel with each pair of U-phase, V-phase and W-phase armature coils. In the case of outputting electric power of three-phase three-wire 200V, and in the case of outputting the electric power of single-phase three-wire 100 / 200V by connecting the W-phase armature coil to the V-phase armature coil from the star connection With the type 2 generator, the alternator is U phase, V
Of outputting three-phase three-wire 200V in which each pair of one-phase and W-phase armature coils are star-connected in parallel and three-phase three-wire 400V in which each pair of armature coils is star-connected in series
In addition to the first output terminal block for extracting each output, a second output terminal block for extracting single-phase 100V power from one of the armature coils is provided. In the case where the wiring is the type 1 generator, the wiring for connecting the one armature coil and the second output terminal block through the switching device is provided as the type 2 power generation. If it is a generator, it is used as wiring for extracting power from the first output terminal block, and if it is a type 1 generator, only in this case, power is extracted from the first output terminal block. In addition, it has a wiring for connecting the contacts of the switching device.

Further, only in the case of the type 1 generator, there are two wirings for connecting the contacts of the switching device,
Used to connect one contact of a V-phase first armature coil having contacts at both ends to the V terminal of the first output terminal block when one wiring outputs electric power of three-phase three-wire 200V When outputting the electric power of 100 / 200V of single-phase three-wire, the contact of the second armature coil of V phase connected to the neutral point is connected to the contact of the second armature coil of W phase. When the other wiring outputs electric power of three-phase three-wire 200V and single-phase three-wire 100 / 200V, the neutral point is the O terminal of the first output terminal block. Used to connect to a single phase 3 wire 10
It is characterized in that it is used to connect the neutral point to the V terminal of the first output terminal block when outputting electric power of 0 / 200V.

Therefore, according to the present invention, the generator can be set to the type 1 generator or the type 2 generator only by changing the connection method of the wiring. Therefore, it is not necessary to rearrange the components of the generator, such as the alternator.Therefore, in the factory, unified production should be performed for both types of generators, and at the time of shipment, simply connect the wiring according to either type. Can respond. Therefore, for example, 200/4 of three-phase three-wire with low demand
It is not necessary to provide a production line for the 00V generator, and by using this generator whose setting can be changed, it is possible to suppress the production cost and increase the profitability.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a generator whose setting can be changed according to the present invention will be described below with reference to the drawings. 1 and 2 show voltage vector diagrams of the armature coils of the alternator used in the generator of this embodiment. In particular, FIG. 1 shows the one corresponding to the type 1 that can switch between three-phase three-wire 200V and single-phase three-wire 100 / 200V, and FIG. 2 can switch three-phase three-wire 200V and 400V. 2 corresponds to the type 2 set. The generator according to the present embodiment uses an alternator capable of switching between types 1 and 2 so that the generator setting can be arbitrarily changed between type 1 and type 2.

This alternator has a pair of armature coils 1 to 1 for U-phase, V-phase and W-phase as in the case shown in FIG.
The armature coil 6 of W phase is provided with a Z2 contact. Therefore, first, in the case of the type 1 generator shown in FIG.
When the armature coils 1 to 6 are star-connected in parallel as shown in (a), phase voltages of equal magnitude are generated in the U-phase, V-phase, and W-phase by 120 ° from each other.

The output terminals U, V / V, W / of each phase
A line voltage of 200V, which is a symmetrical three-phase AC voltage having the same magnitude and different phases by 120 °, is generated between W and U, and electric power of three-phase three-wire 200V is obtained. Then, when the armature coils 1 to 6 are connected as shown in FIG. 1B, a phase voltage of 100 V is applied to the U phase, and a W phase armature is applied to the V phase armature coils 3 and 4. Phase of coils 5 and 6 is 60
The lines are connected with a shift of °, a line voltage of 100 V is generated there, and a line voltage of 200 V is generated between the U-phase and the W-phase, so that electric power of 100/200 V of single-phase 3-line is obtained.
Here, each phase voltage in the case of (a) is about 115.5 V,
In the case of (b), 100 V differs from AVR.
This is because the automatic voltage adjuster automatically adjusts the voltage between V and W to 200V.

On the other hand, when the type 2 generator shown in FIG. 2 with the changed settings is used, the configuration shown in FIG.
In the same manner as in the above case, a pair of U-phase, V-phase, and W-phase armature coils 1 to 6 are star-connected in parallel, and output terminals U and V of each phase are connected.
/ V, W / W, U, a symmetrical three-phase AC voltage having a line voltage of 200 V, which is different in phase by 120 °, can be obtained. Then, as shown in FIG. 2B, the armature coils 1 to 1 for each phase are
If 6 is connected in series, output terminals U, V / V, W of each phase
/ W and U, phase voltages of equal magnitude and different from each other by 120 ° are generated.
V power is obtained.

The generator of the present embodiment uses such an alternator that can be switched for each type, and includes a switchable type 1 generator shown in FIG.
The switching shown in FIG. 2 enables the type 2 generator to be shipped from the factory as either type of generator by a simple setting change. Therefore, next, the circuits constituting each type of generator will be described.

Here, FIGS. 3 and 4 are diagrams showing a circuit of the type 1 generator, and FIG. 3 shows a case where the three-phase three-wire 200V shown in FIG. But Figure 1
It shows a case where the single-phase three-wire 100/200 V shown in (b) is switched. The switching between the three-phase three-wire 200V and the single-phase three-wire 100 / 200V can be performed by the voltage switching device 10 shown in FIGS. 3 and 4.

Therefore, first, the three-phase three-wire 200 shown in FIG.
In the case of V, the armature coils 1 to 6 of the alternator are connected as shown in FIG. 1 (a) as follows. First, in the U phase, the X1 contact of the armature coil 1 is directly connected to the O terminal of the output terminal block 22 by the x1 line, and the armature coil 2 directly connected to the neutral point O1 has the neutral point O1 of o.
Connected to the contact 12 of the voltage switching device 10 by one wire,
From there, it is connected to the contact 13 via the o2 line,
It is connected to the O terminal of the output terminal block 22 by a wire.
The U1 and U2 contacts of the armature coils 1 and 2 are connected to the U terminal of the output terminal block 22 via the breaker 21 by the u1 line and the u2 line, respectively. Therefore, the armature coils 1 and 2 are connected in parallel between the O terminal and the U terminal as shown in FIG.

Next, in the V phase, the Y1 contact of the armature coil 3 is directly connected to the output terminal block 22O terminal by the y1 line, and the armature coil 4 has the neutral point O1 as in the U phase armature coil 2. And is connected to the O terminal of the output terminal block 22. Further, the V1 contact point of the armature coil 3 is v1
Line to the contact 11 of the voltage switching device 10 and from there to the contact 14 by the line v3 and further to v4
A wire is connected to the V terminal of the output terminal block 22 via the breaker 21. On the other hand, V2 of the armature coil 4
The contact is connected to the contact 14 of the voltage switching device 10 by the v2 line, and is further connected to the V terminal via the breaker 21 from the contact 14 by the v4 line. Thus, the armature coils 3 and 4 are connected between the O terminal and the V terminal as shown in FIG.
They are connected in parallel as shown in (a).

Further, in the W phase, the Z1 contact of the armature coil 5 and the Z2 contact of the armature coil 6 are both z1 line and z
Connected to the contact 12 of the voltage switching device 10 by two wires,
Similar to the connection from the neutral point O1 of the U and V phases, the output terminal block 2 is connected by the o3 line connected to the contact 13 through the o2 line.
2 is connected to the O terminal. Also, armature coils 5, 6
The W1 contact point and the W2 contact point of are connected to the W terminal of the output terminal block 22 via the breaker 21 by the w1 line and the w2 line, respectively. Therefore, the armature coils 5 and 6 are
The O terminal and the W terminal are connected in parallel as shown in FIG.

Subsequently, the three-phase three-wire 20 shown in FIG.
When switching from 0 V to the single-phase three-wire 100/200 V shown in FIG. 4, reconnection is performed in the voltage switching device 10. That is, the z1 wire and the z2 wire connected to the Z1 and Z2 contacts of the armature coils 5 and 6 are connected to the contact 12 from the contact 12, and the v4 wire connected to the V terminal is connected from the contact 14 to the contact 13. Change. As a result, V1
Since the contact point is connected to the contact point 11 via the v1 line and the V2 contact point is connected to the contact point 11 via the v2 and v3 lines, if the z1 and z2 lines are reconnected to the contact point 11, the armature coil separated from the V terminal. The V1 and V2 contacts 3 and 4 are connected to the Z1 and Z2 contacts of the armature coils 5 and 6 in place of the V terminal,
The alternator is wired as shown in FIG.

Therefore, in the type 1 generator shown in FIGS. 3 and 4, if the connection of the voltage switching device 10 is switched, the three-phase electric power of 200 V shown in FIG. 1A and the three-phase electric power shown in FIG. It is possible to generate 100 / 200V single-phase 3-wire power. By the way, in the present embodiment, both the type 1 and type 2 generators, which will be described later, can obtain electric power of single-phase 100V at any voltage switching. In the case of the three-phase three-wire 200V shown in 3, the single-phase 100V power can be obtained.

For this purpose, an intermediate tap is attached to the U-phase armature coil 2, and its U3 contact is connected to the contact 16 of the voltage switching device 10 via the u3 line, and from there, via the breaker 23 by the r1 line. Is connected to the R terminal of the output terminal block 24. In this way, the R terminal is connected to the armature coil 2, and one S terminal is connected to the O terminal of the output terminal block 22 by the o4 line. Therefore, R, S
A voltage of 100V can be obtained from the outlet 25 connected between the terminals. The U3 contact is provided on the armature coil 2 via the intermediate tap because the armature coil 2 actually outputs a line voltage of about 125V.

On the other hand, in the case of single-phase three-wire 100/200 V, as shown in FIG. 4, the r1 line is switched from the contact 16 of the voltage switching device 10 to the contact 15, and the R terminal of the output terminal block 24 is the u1 line. Armature coil 1 via r2 wire connected to
Connected to the U1 contact of the. In this case, the phase voltage obtained from the armature coils 1 and 2 shown in FIG. 1 (b) is 100V because the voltage between V-W (actually V2-W2) is always 200V due to the AVR (voltage automatic regulator). This is because it is automatically adjusted so that

As described above, the generator configured by the circuits shown in FIGS. 3 and 4 is shipped as a type 1 generator after such wiring is preliminarily performed in the factory. Then, the user can operate the voltage switching device 10 as described above.
By switching the connection as shown in FIGS. 3 and 4, it is possible to properly use the three-phase three-wire 200V and the single-phase three-wire 100 / 200V. Switching between the two is performed by the voltage switching device 1
This is a simple wiring changeover of 0, which is the same as that of the conventional product, and is easy for the user to handle.

Next, in this generator, the wiring is changed at the factory to change the circuit, thereby changing the circuit without altering the generator itself such as transposing of the alternator. It can be set and shipped as a type 2 generator that can switch 400V of three-phase and three-wire. Therefore, the type 2 generator will be described below while showing its circuit. 5 and 6 are diagrams showing the circuit of the type 2 generator, and FIG.
FIG. 6 shows a case where the three-phase three-wire 200V shown in (a) is switched to, and a case where the three-phase three-wire 400V shown in FIG. 2B is switched to.

First, the case of the three-phase three-wire 200V shown in FIG. 5 will be described. In the U-phase, V-phase, and W-phase armature coils 1, 3, and 5, the X1 contact, Y1 contact, and Z1 contact are x.
The contacts 11, 13, and 15 of the voltage switching device 10 are connected by a 1-line, a y1-line, and a z1-line, respectively. And
These are also the contacts 1 via the joint bar 18.
7 and from there is further connected to the O terminal of the output terminal block 22 via the o3 line. The neutral point O1 of the armature coils 2, 4, 6 of each phase is Z
The two contacts are connected to the contacts 17 of the voltage switching device 10 by the z2 line, and from there, the O of the output terminal block 22 is connected via the o3 line.
It is connected to the terminal.

On the other hand, the U1 contact point, V1 contact point and W1 contact point of the armature coils 1, 3 and 5 are u1 line, v1 line and w.
One line is connected to the U terminal, V terminal, and W terminal of the output terminal block 22 via the breaker 21.
And U2 contact, V2 contact of the armature coils 2, 4, 6
The W2 contacts are connected to the contacts 12, 14, 16 of the voltage switching device 10 by u2 wire, v2 wire, and w2 wire, respectively.
From there, the r2 line, v4 line, and r1 line are connected to the U terminal, V terminal, and W terminal through the breaker 21, respectively. Thus, each pair of armature coils 1, 2/3, 4/5, 6 in the U-phase, V-phase and W-phase is as shown in FIG. 2 (a) between the O terminal and the U, V, W terminals. Are connected in parallel.

Then, in order to switch this to the three-phase three-wire 400V, as shown in FIG. 6, the joint bar 18 of the voltage switching device 10 is removed, and the U2 contact, V2 contact, W2 of the armature coils 2, 4, 6 are connected. U2 wire, v2 wire connected to the contact,
Connect the w2 wires to the contacts 12 and 1 of the voltage switching device 10, respectively.
The contacts 4, 13 and 15 are reconnected. As a result, each pair of armature coils 1, 2/3, 4/5, 6
Is connected to the O terminal and U, through its contacts 11, 13, and 15.
The V and W terminals are connected in series as shown in FIG.

As described above, the generator constructed by the circuits shown in FIGS. 5 and 6 is shipped as a type 2 generator after such wiring is preliminarily performed in the factory. Then, the user can operate the voltage switching device 10 as described above.
It is possible to selectively use the three-phase three-wire 200V and 400V by switching the connection as shown in FIGS. 5 and 6. Even in the case of this type 2, the switching between the two is a simple connection change of the voltage switching device 10 and does not change at all from the conventional product, so that it is easy for the user to handle.

By the way, a single-phase 100V electric power can be obtained even with this type 2 generator, and the U3 contact connected to the armature coil 2 is connected to the output terminal block 24 by the u3 wire via the breaker 23. It is connected to the R terminal of. Therefore, the outlet 25 connected between the R and S terminals
Can obtain a voltage of 100V.

As described above, in the generator according to the present embodiment, the type 1 and the type 2 are simply set by changing the wiring.
Can be factory shipped as any type of generator. So next, type 1 or type 2 as above
The wiring for setting to any of the generators will be specifically described. In the explanation, in order to clarify the difference between the two types of wiring, the type 1 three-phase three-wire 2 shown in FIG.
A specific reconnection of the wiring from 00V to the type 2 three-phase three-wire 200V shown in FIG. 5 will be described.

First, the contacts 11, 14 of the voltage switching device 10
The v3 wire that was connected to the contact and the o2 wire that was connected to the contacts 12 and 13 were removed, and the o3 wire that was connected to the O terminal of the output terminal block 22 and the contact 13 of the voltage switching device 10 was connected to contact 1.
The connection from 3 to the contact 17 is changed.

Next, regarding the U phase, the armature coil 1 is
The u1 wire connected to the U1 contact is left as it is, and the other X1 contact and the U2 contact of the armature coil 2 and the wirings connected to the neutral point O1 are reconnected. That is, the x1 line of the X1 contact is the O of the output terminal block 22.
From the terminal to the contact 11 of the voltage switching device 10, the u of the U2 contact
The two wires are connected from the U terminal of the breaker 21 to the contact 12 of the voltage switching device 10, and the o1 wire of the neutral point O1 is connected from the contact 12 of the voltage switching device 10 to the contact 17. Further, since the U2 contact connected to the contact 12 by connecting the u2 wire is further connected to the U terminal, the r2 wire connected to the u1 wire is connected to the contact 12 from the contact 15 of the voltage switching device 10.

Next, regarding the V phase, the armature coil 4 is
The v2 wire connected to the V2 contact is left as it is, and the neutral point O1 is common to the U-phase armature coil 2, so that the reconnection is performed as described above. Therefore, for the V phase, the wirings connected to the V1 contact and the Y1 contact of the armature coil 3 are reconnected. That is, the V1 line of the V1 contact is connected from the contact 11 of the voltage switching device 10 to the V terminal of the output terminal block 22 via the breaker 21,
The y1 line of one contact is reconnected from the O terminal of the output terminal block 22 to the contact 13 of the voltage switching device 10.

Next, regarding the W phase, the armature coil 5 is
The w1 line connected to the W1 contact is left as it is, and the wirings connected to the other Z1 contact and the Z2 contact of the armature coil 6 and the W2 contact are reconnected. That is, the z1 line of the Z1 contact is from the contact 12 of the voltage switching device 10 to the contact 15, the z2 line of the Z2 contact is from the contact 12 of the voltage switching device 10 to the contact 17, and the w2 line of the W2 contact is of the breaker 21. Voltage switching device 1 from W terminal
The contacts 0 are connected to each other.

Further, since the W2 contact connected to the contact 16 is further connected to the W terminal of the output terminal block 22 via the breaker 21, the r1 line connected to this contact 16 is removed from the breaker 23 and is connected to the W terminal. Can be reconnected. Accordingly, the u3 wire connected to the armature coil 2 by the U3 contact is connected to the armature coil 2 through the breaker 23 and the R3 of the output terminal block 24 so that the single-phase 100V voltage can be obtained at all times. It can be reconnected to connect directly to the terminal.

Therefore, according to the generator of the present embodiment, the generator can be set to the type 1 generator or the type 2 generator only by changing the connection method of the wiring. Therefore, it is not necessary to rearrange the components of the generator, such as the alternator.Therefore, in the factory, unified production should be performed for both types of generators, and at the time of shipment, simply connect the wiring according to either type. Can respond. Therefore, the demand for three-phase three-wire 20 is low
It is not necessary to provide a production line for 0V and three-phase three-wire 400V generators. By using this generator whose settings can be changed, it is possible to suppress production costs and increase profitability.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0040]

INDUSTRIAL APPLICABILITY The present invention provides a type 1 generator and a type 2 generator by changing the way of connecting the wiring connected between each armature coil of the alternator, the switching device and the output terminal block. Since the setting is made, it becomes possible to provide a generator whose setting can be changed by making the alternator common and easily setting it for each type of generator by simply changing the wiring.

[Brief description of drawings]

FIG. 1 is a three-phase three-wire 200V and a single-phase three-wire one armature coil.
It is the figure which showed the state connected to 00 / 200V.

[Fig. 2] 200V and 400V of three-phase three-wire armature coil
It is the figure which showed the state connected to.

FIG. 3 is a circuit diagram showing a case of a three-phase three-wire 200V type 1 generator.

FIG. 4 Single-phase three-wire 100/2 in a type 1 generator
It is a circuit diagram showing the case of 00V.

FIG. 5 is a circuit diagram showing a case of a three-phase three-wire 200V type 2 generator.

FIG. 6 is a circuit diagram showing a case of three-phase three-wire 400V in a type 2 generator.

FIG. 7 shows three-phase three-wire 200V and single-phase three-wire one armature coil.
It is the figure which showed the state connected to 00 / 200V.

FIG. 8: 200 V and 400 V of three-phase three-wire armature coil
It is the figure which showed the state connected to.

[Explanation of symbols]

1-6 Armature coil 10 Voltage switching device 22, 24 output terminal block 21,23 breakers 25 outlets

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[Procedure amendment]

[Submission date] October 1, 2002 (2002.10.
1)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

The output terminals U, V / V, W / of each phase
A line voltage of 200V, which is a symmetrical three-phase AC voltage having the same magnitude and different phases by 120 °, is generated between W and U, and electric power of three-phase three-wire 200V is obtained. Then, when the armature coils 1 to 6 are connected as shown in FIG. 1B, a phase voltage of 100 V is applied to the U phase, and a W phase armature is applied to the V phase armature coils 3 and 4. Phase of coils 5 and 6 is 60
The lines are connected with a shift of °, a line voltage of 100 V is generated there, and a line voltage of 200 V is generated between the U-phase and the W-phase, so that electric power of 100/200 V of single-phase 3-line is obtained.
Here, each phase voltage in the case of (a) is about 115.5 V,
In the case of (b), 100 V differs from AVR.
This is because the automatic voltage regulator automatically adjusts the voltage between U and W to 200V.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

On the other hand, in the case of single-phase three-wire 100/200 V, as shown in FIG. 4, the r1 line is switched from the contact 16 of the voltage switching device 10 to the contact 15, and the R terminal of the output terminal block 24 is the u1 line. Armature coil 1 via r2 wire connected to
Connected to the U1 contact of the. In this case, the phase voltage obtained from the armature coils 1 and 2 shown in FIG. 1 (b) is 100 V because U- W (actually, U 2 by the automatic voltage regulator) AVR. This is because the voltage between −W2) is always automatically adjusted to 200V.

Claims (3)

[Claims] 1. A three-phase alternator having a pair of armature coils each having the same number of turns in each phase, one of the two phases is connected to a neutral point, and The other end and the other armature coil have contacts at both ends, and the remaining one phase has contacts at both ends of a pair of armature coils. A switchable generator that outputs three-phase power or single-phase three-wire power from an output terminal block by switching, and is connected between each armature coil of the alternator, the switching device, and the output terminal block. By changing the connection method of the wiring, a type 1 generator that can switch the output between three-phase power and single-phase three-wire power, or a type 2 generator that can switch the output of three-phase power in two stages Set Configurable generator, characterized in that the at it. 2. The generator whose setting can be changed according to claim 1, wherein the type 1 generator is configured such that the alternator is U-phase,
When outputting electric power of three-phase three-wire 200V in which each pair of V-phase and W-phase armature coils is star-connected in parallel, and when the star-connection causes the W-phase armature coil to be V-phase armature coil To V
It is possible to switch between the case of connecting and outputting electric power of 100/200 V of single-phase three-wire, and in the generator of the type 2, the alternator is a U-phase,
Three-phase three-wire in which a pair of V-phase and W-phase armature coils are star-connected in parallel, and a case where 200 V of electric power is output and three-phase three-wire in which each pair of armature coils is star-connected in series 400
It is possible to switch between the case where the electric power of V is output and the case where the electric power of single phase 100V is taken out from one of the armature coils in addition to the first output terminal block which takes out the respective outputs.
When the wiring has an output terminal block and the generator is the type 1, the wiring for connecting the one armature coil and the second output terminal block through a switching device is used. In the case of a type 2 generator, it is used as wiring for extracting electric power from the first output terminal block, and in the case of a type 1 generator, only in this case, from the first output terminal block A generator whose setting can be changed, comprising a wire connecting between contacts of the switching device for extracting electric power. 3. The generator whose setting can be changed according to claim 2, wherein only in the case of the type 1 generator, there are two wirings connecting the contacts of the switching device, and one wiring is It is used to connect one contact of a V-phase first armature coil having contacts at both ends to the V-terminal of the first output terminal block when outputting electric power of three-phase three-wire 200V. When the electric power of 100 / 200V is output, it is used to connect the contact of the second armature coil of V phase connected to the neutral point to the contact of the second armature coil of W phase. The other wiring is three-phase three-wire 200V and single-phase three-wire 10
Used to connect the neutral point to the O terminal of the first output terminal block when outputting 0 / 200V power, and also outputs single-phase 3-wire 100 / 200V power. A configurable generator, which in some cases is used to connect the neutral point to the V terminal of the first output terminal block as well.