JP2002272072A - Dc power generator and dc power supply equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dc power generator that is simply constituted and is capable of obtaining a plurality of different dc voltages and properly supplying power to an electrical load even if the generated output fluctuates. SOLUTION: Magnetic poles in an integral multiple of two poles, north pole and south pole, are formed on a rotor 3, and terminals in an integral multiple of three poles are formed on a stator 1. Armature winding 2 is formed on each of the poles, and the armature windings 2 are individually provided with a rectifier 4. The rectifiers 4 are connected in series to form rectifier series circuits 6, and the rectifier series circuits 6 are connected in serial parallel. Output terminals 7 are taken out of the rectifier series circuits and dc voltage is taken out of the major terminals of them. Thus a plurality of different dc voltage is obtained without need for a commutator or a brush.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC power generator and a DC power supply system for generating DC power and supplying DC power to a private electric load.

[0002]

2. Description of the Related Art In general, household power is provided by purchasing AC power from an electric power company. However, in recent years, private power generation facilities have been installed in each home, and household power has been generated by the private power generation facilities. It is being considered to cover this. As home-use in-house power generation facilities, wind power generation, hydro power generation, solar power generation, etc., which are kind to nature, have been studied.
Private power generation facilities using fuel cells and micro gas turbines are also being studied.

[0003] In such a private power generation facility for home use, a DC system is often employed because the power system is small. In photovoltaic power generation and fuel cell power generation, the generated power itself is DC, so power is supplied directly to the DC system.

On the other hand, in wind power generation and hydro power generation, DC power is generated using a DC generator and the DC power is supplied to a DC system, or AC power is generated using an AC generator, and the AC power is generated. It is converted into DC power and supplied to the DC system.

[0005] In a power generation facility using wind power or hydro power,
Since there is a case where the amount of wind or water, which is generated energy, is not supplied stably, a battery is provided so that power can be stably supplied to the electric load even if the amount of air or water fluctuates. That is, when the generated power is excessive, the battery is charged, and when the generated power is insufficient, the power is discharged from the battery and supplied to the electric load. As a result, power can be stably supplied to the electric load.

[0006] Here, charging and discharging of the battery with respect to fluctuations in the air volume and water volume are controlled as follows depending on the type of generator used.

(1) In the case where a normal DC generator is used In general, a DC generator supplies an exciting current to a coil on a stator side and extracts electric power generated in a coil of a rotor by a commutator and a brush. It is configured. When such a normal DC generator is used, when the amount of air or water decreases and the rotation speed of the rotor decreases, and the generated power decreases, the charging current to the battery is turned off by the regulator and the battery is turned off. Prevent backflow to the DC generator. On the other hand, when the amount of wind and water increases and the rotation speed of the rotor increases and the generated power increases, the exciting current is controlled by the controller, and the DC power is maintained while maintaining the output voltage at an appropriate DC voltage value. To charge.

(2) When a permanent magnet type DC generator is used In a permanent magnet type DC generator, a magnet is installed on a stator side, and power generated in a coil of a rotor is taken out by a commutator and a brush. It is composed of If this permanent magnet type DC generator is used, the exciting current cannot be controlled.Therefore, another regulator is provided instead of the controller that controls the exciting current, and control is performed so that excessive DC voltage is not applied to the battery. I do.

That is, when the output voltage of the DC generator is in the normal voltage range, the DC power is supplied to the electric load while charging the battery, and the amount of air generated and the amount of water are reduced, and the generated power is reduced. When the output voltage falls below the normal voltage range, the charging current to the battery is turned off by the regulator to prevent backflow from the battery to the DC generator. On the other hand, when the output power of the DC generator exceeds the normal voltage range due to an increase in the generated power due to an increase in the air volume and water volume, the charging current to the battery is turned off by another regulator, and the excessive DC Control so that no voltage is applied.

(3) When a rotating field type AC generator is used In the rotating field type AC generator, a DC excitation DC is supplied to a coil attached to a rotor through a pair of slip rings via brushes. The AC power is supplied and the AC power is generated in the coil on the stator side by the rotation of the rotor. The AC power is converted into DC power through a rectifier circuit or a converter and is taken out.

When such a rotating field type AC generator is used, similarly to the case of using a normal DC generator, when the amount of air or water is reduced and the generated power is reduced,
The charging current to the battery is turned off by the converter or the regulator, and power is supplied from the battery to the electric load. On the other hand, when the generated power increases due to an increase in the amount of air or water, the controller controls the exciting current to charge the battery with the DC power while maintaining the output voltage at an appropriate DC voltage value.

(4) When a permanent magnet type AC generator is used A permanent magnet type AC generator has a magnet mounted on the surface of a rotor and generates AC power in a coil on a stator side by rotation of the rotor. The AC power is converted into DC power through a rectifier circuit or a converter and extracted.

Since the excitation current cannot be controlled when this permanent magnet type AC generator is used, another regulator is provided as in the case of the permanent magnet type DC generator, and an excessive DC voltage is supplied to the battery. Is controlled not to be applied.

[0014]

However, conventional power generating equipment using such a generator is configured so that only one type of voltage value can be obtained as a voltage class. Can not get. For this reason, it is not possible to use various electric loads having different rated voltages, and the use is narrow.

[0015] Further, since the power generated by the generator fluctuates depending on the air volume and water volume, it is configured to obtain one type of voltage value. It must be charged while adjusting with a controller and a regulator correspondingly.

In order to obtain a plurality of types of voltage values, it is necessary to additionally provide a chopper and a converter, and further, it is necessary to prepare a plurality of types of batteries according to the voltage class. In such a case, the equipment becomes complicated and expensive. In addition, when a DC generator is used, a commutator and a brush are required, which requires maintenance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a DC power generating apparatus and a DC power supply system which have a simple configuration, can obtain a plurality of types of DC voltage values, and can appropriately supply power to an electric load even if the generated power fluctuates. It is to provide.

[0018]

According to a first aspect of the present invention, there is provided a DC power generator comprising: a rotor having two magnetic poles, an N pole and an S pole; and an armature winding provided on each of three poles. , A rectifier for rectifying the output voltage of each of the armature windings, a rectifier series circuit formed by connecting the rectifiers in series, and an output for extracting a DC voltage synthesized from the rectifier series circuit. And a terminal.

According to a second aspect of the present invention, there is provided a DC power generator.
A rotor having magnetic poles of 2n poles, which is an integer n times as large as two poles of N and S poles; a stator having armature windings applied to each of 3n poles, which is an integer n times that of three poles; A rectifier that rectifies the output voltage of each armature winding, a rectifier series circuit formed by connecting three pole rectifiers adjacent to each other in series, and an output circuit that connects the rectifier DC circuits in series or in parallel. And an output terminal for extracting a DC voltage from the output circuit.

According to a third aspect of the present invention, there is provided a DC power generating apparatus.
The invention according to claim 1 or 2, wherein a plurality of armature windings are applied to each pole of the stator.

According to a fourth aspect of the present invention, there is provided a DC power generator,
In the invention of claim 2 or claim 3, the output circuit has a changeover switch at a connection point where the rectifying series circuits are connected in series or in parallel, and outputs a DC voltage extracted from the output terminal by switching the changeover switch. It is characterized by being variable.

According to a fifth aspect of the present invention, there is provided a DC power supply system, comprising: a DC power generator according to any one of the first to third aspects; A plurality of batteries that supply DC power to the battery, and a connection circuit that forms a series circuit or a parallel circuit of the plurality of batteries and supplies DC power of a voltage corresponding to the rated voltage of the electric load to the electric load. It is characterized by having.

According to a sixth aspect of the present invention, in the DC power supply equipment according to the fifth aspect of the present invention, a part of the plurality of batteries is constituted by batteries having different rated voltages, and the connection circuit is connected to the DC power generator. Of the plurality of types of output voltages are connected to output terminals having the same voltage.

According to a seventh aspect of the present invention, in the DC power supply equipment according to the fifth aspect of the present invention, a part of the plurality of batteries is constituted by batteries having different rated voltages, and the output voltage of the DC power generator varies. And selecting a battery that charges DC power according to

[0025]

Embodiments of the present invention will be described below. FIG. 1 is an explanatory diagram of a DC power generator according to a first embodiment of the present invention. The DC power generator of the present invention connects a rectifier to each armature winding of the AC generator,
The AC output voltage of each armature winding is subjected to single-phase full-wave rectification and then combined to obtain a DC voltage.

FIG. 1A is a configuration diagram of a DC power generator according to a first embodiment of the present invention. Stator 1 is 3
It has pole terminals, and is located at an electrical angle of 2π / 3 between the poles. An armature winding 2 is provided on each pole.

On the other hand, the rotor 3 has two magnetic poles, an N pole and an S pole, and the rotor 3 is driven by a prime mover. For example, the rotor 3 is driven by a wind turbine or a water turbine, and the rotation of the rotor 3 generates an electromotive force (induced voltage) in the armature winding 2 on the stator 2 side. The rotor 3 is formed of a plastic magnet (Plastic Magnet) in which a resin and a magnet material are mixed. Thus, the diameter of the rotor 3 is made as small as practically possible, and the rotor 3 can be rotated even when the amount of air or water is small.

A rectifier 4 is connected to each armature winding 2 as shown in FIG. This rectifier 4
The four rectifying elements 5 are bridge-connected, and output a single-phase full-wave rectified waveform obtained by rectifying the voltage generated in the armature winding 2 from the output terminal. In the following description, the armature winding (armature winding with rectifier) to which this rectifier 4 is connected is simply referred to as the armature winding 2 unless otherwise specified.

The armature winding 2 of each of these three poles
Are connected in series as shown in FIG. This allows
A DC voltage obtained by combining the DC voltages obtained by the armature windings 2 of the respective poles is taken out. Here, a series connection of the armature windings 2 of each of the three poles shown in FIG. 1C is hereinafter referred to as a rectification series circuit 6, and this is handled as one unit.
Output terminals 7 are provided at both ends of the rectifying series circuit 6, and a DC voltage obtained by combining DC voltages obtained by the armature windings 2 of the respective poles is taken out from the output terminals 7.

According to the first embodiment, a DC voltage can be obtained without the need for a commutator or a brush, so that no special maintenance is required. In addition, since the rectifier 4 is provided on the armature winding 2 of each pole to rectify independently,
A single-phase full-wave rectified waveform can be extracted as needed,
DC voltages having different voltage values can be taken out. Further, since the armature winding 2 of each pole is installed at a position where the electrical angle has moved by 2π / 3, when these single-phase full-wave rectified waveforms are combined, a DC voltage with little pulsation is obtained. .

Next, a second embodiment of the present invention will be described. FIG. 2 is an explanatory diagram of a DC power generator according to a second embodiment of the present invention. FIG. 2A is a configuration diagram of a DC power generator according to a second embodiment of the present invention, in which a stator 1 is provided with six pole terminals and a rotor 3 is provided with four magnetic poles. It is.

In this case, two adjacent three-pole armature windings 2 are connected in series to form two rectifying series circuits 6. For example, the first pole, second pole, and third pole armature windings 2 are connected in series to form a first rectified series circuit 6A, and the fourth pole, fifth pole, and sixth pole armatures are formed. The second rectifying series circuit 6B is formed by connecting the windings 2 in series.

Then, as shown in FIG. 2B, two rectifying series circuits 6A and 6B are connected in series to form an output circuit 8, and an output terminal 7 is drawn out. Alternatively, as shown in FIG. 2C, an output circuit 8 is formed by connecting two rectification series circuits 6A and 6B in parallel, and an output terminal 7 is drawn out. When two rectification series circuits 6A and 6B are connected in series, a double DC voltage is obtained. When two rectification series circuits 6A and 6B are connected in parallel, the DC voltage value is the same as that of the rectification series circuit 6 alone, but the DC current is doubled.

According to the second embodiment, depending on how the rectifying series circuits 6A and 6B are connected in the output circuit 8,
A DC voltage that is twice as large as that obtained when the rectification series circuit 6 is used alone is obtained. Further, when the output terminal 7 of the output circuit 8 is taken out from the series connection point of the rectification series circuit 6, two types of DC voltages, that is, a DC voltage when the rectification series circuit 6 is used alone and a DC voltage twice the same, are obtained.

Next, a third embodiment of the present invention will be described. FIG. 3 is an explanatory diagram of a DC power generator according to a third embodiment of the present invention. FIG. 3 (a) is a configuration diagram of a DC power generator according to a third embodiment of the present invention, in which a stator 1 is provided with 9 pole terminals, and a rotor 3 is provided with 6 poles. It is.

In this case, as in the case of the second embodiment, adjacent three-pole armature windings 2 are connected in series to form three rectification series circuits 6A, 6B and 6C. For example, by connecting the armature windings 2 of the first pole, the second pole, and the third pole in series,
A second rectification series circuit 6A is formed, and the fourth, fifth, and sixth pole armature windings 2 are connected in series to form a second rectification series circuit 6B. The armature windings 2 of the eighth and ninth poles are connected in series to form a third rectified series circuit 6C.

Then, as shown in FIG. 3 (b), three rectification series circuits 6A, 6B and 6C are connected in series to form an output circuit 8
Is formed, and the output terminal 7 is drawn out. Alternatively, FIG.
As shown in (2), two rectification series circuits 6A and 6B are connected in parallel, one rectification series circuit 6C is connected in series, an output circuit 8 is formed, and an output terminal 7 is drawn out. Alternatively, FIG.
As shown in (d), three rectification series circuits 6A, 6B,
6C are connected in parallel to form an output circuit 8 and an output terminal 7 is drawn out.

When three rectification series circuits 6A, 6B and 6C are connected in series, a triple DC voltage is obtained. When two rectification series circuits 6A and 6B are connected in parallel and one rectification series circuit 6C is connected in series, a double DC voltage is obtained. When the three rectification series circuits 6A, 6B, and 6C are connected in parallel, the DC voltage is three times the DC voltage value when the rectification series circuit 6 is used alone.

According to the third embodiment, depending on how the rectifying series circuits 6A, 6B, 6C are connected in the output circuit 8, the DC voltage is twice or three times that of the rectifying series circuit 6 alone. Is obtained. Further, when the output terminal 7 of the output circuit 8 shown in FIG.
Is a single DC voltage, twice the DC voltage, 3
Three types of DC voltages, twice the DC voltage, are obtained.

Here, as can be seen from the above description, the DC power generator of the present invention uses the three poles on the stator side 1 and the two poles on the rotor 3 side in the first embodiment shown in FIG. It is configured by multiplying by an integer n. As the number of n increases, a plurality of types of DC voltages can be obtained, but practically, n is about 1 to 3.

Next, a fourth embodiment of the present invention will be described. FIG. 4 is an explanatory view of a DC power generator according to a fourth embodiment of the present invention, and FIG.
(B) is an explanatory view of a rectification series circuit. This fourth embodiment is different from the first embodiment shown in FIG. 1 in that two armature windings 2a and 2b are applied to each pole of the stator 1, and two poles are provided from each pole. The rectifying series circuits 6A and 6B are formed.

In FIG. 4A, the stator 1 has three pole terminals, and the poles are arranged at an electrical angle of 2π / 3. Each pole has two armature windings 2
a and 2b are given respectively. On the other hand, the rotor 3 has two magnetic poles, ie, an N pole and an S pole.
The two armature windings 2a, 2a on the stator 2 side
b generates an electromotive force.

The armature windings 2a, 2b of each of these three poles
Are connected in series as shown in FIG.
The rectification series circuits 6A and 6B are formed, and a DC voltage obtained by combining DC voltages obtained by the armature windings 2a and 2b of each pole is extracted. That is, a DC voltage obtained by combining DC voltages obtained by the armature windings 2a and 2b of the respective poles is extracted from the output terminals 7 of the rectifying series circuits 6A and 6B.

According to the fourth embodiment, since two armature windings 2a and 2b are applied to each pole of the stator 1, two rectification series can be provided without increasing the number of poles of the stator 1. Circuits 6A and 6B can be obtained. Therefore, when the two rectifying series circuits 6A and 6B are connected in series in the output circuit 8 as in the second embodiment described above, a DC voltage that is twice as large as that obtained when the rectifying series circuit 6 is used alone is obtained. Further, when the output terminal 7 of the output circuit 8 is taken out from the series connection point of the rectifying series circuits 6A and 6B, two types of DC voltages are obtained: a DC voltage when the rectifying series circuit 6 is used alone and a DC voltage twice as large. Can be

In the above description, the two armature windings 2a,
Although 2b is provided on each pole of the stator 1, three or more armature windings 2 may be provided on each pole of the stator 1.

Next, a fifth embodiment of the present invention will be described. FIG. 5 is a configuration diagram of a DC power generator according to a fifth embodiment of the present invention. In the fifth embodiment, the stator 1 is provided with nine pole terminals, the rotor 3 is provided with six magnetic poles, and each pole of the stator 1 is provided with three armature windings 2a, 2b and 2c are applied.

In the fifth embodiment, nine rectified DC circuits are obtained. That is, a first pole of three adjacent poles,
The second and third pole armature windings 2a, 2b, and 2c are connected in series to form three rectified series circuits.
The sixth armature windings 2a, 2b, and 2c are connected in series to form another three rectified series circuits. 7th pole, 8th pole
The pole and ninth pole armature windings 2a, 2b, 2c are connected in series to form another three rectifying series circuits.

According to the fifth embodiment, since three armature windings 2a, 2b, and 2c are applied to each pole of the stator 1, three rectifiers are provided from three adjacent poles of the stator 1. Since a series circuit can be obtained and the number of poles of the stator is nine, nine rectified series circuits can be obtained.

The output circuit 8 is formed by appropriately combining these nine rectifying series circuits and connecting them in series or in parallel. When all nine rectification series circuits are connected in series, a DC voltage nine times that of the rectification series circuit 6 alone can be obtained. When the output terminal 7 of the output circuit 8 is appropriately taken out from the connection point of the rectification series circuit, nine DC voltages can be taken out in the case of the rectification series circuit alone.

Next, the output circuit 8 will be described. FIG.
Shows an output circuit 8 of the DC power generator according to the second embodiment shown in FIG. That is, a case where different output voltages are extracted from the two rectification series circuits 6A and 6B is shown.

To obtain a single DC voltage V for the rectification series circuits 6A and 6B, the DC voltage V is taken out between the output terminals 7A1 and 7A2 and between the output terminals 7B1 and 7B2. Alternatively, when the switch SW1 is turned on, the DC voltage V can be extracted from between the output terminals 7A1 and 7B2. Similarly, when the switch SW2 is turned on,
The DC voltage V can be taken out from between the output terminals 7B1 and 7A2.

On the other hand, when the switches SW1 and SW2 are off,
When the switch SW3 is turned on, the rectifying series circuit 6
A, 6B are connected in series, so that the output terminals 7A1, 7B
2, a DC voltage 2V that is twice the DC voltage V can be obtained. In this state, it is needless to say that the DC voltage V can be taken out between the output terminals 7A1 and 7A2 and between the output terminals 7B1 and 7B2.

As described above, the switch SW is provided in the output circuit 8 and the output circuit 8 is switched by switching the switch SW.
A plurality of types of output voltages can be taken out from the output terminal 7.

FIG. 7 shows an output circuit 8 when different output voltages are taken out from the six rectified series circuits 6A to 6F. To form six rectification series circuits 6A to 6F,
For example, it can be obtained by applying two armature windings 2 to each pole in the DC power generator of the third embodiment shown in FIG.

In FIG. 7, when a single DC voltage V of the rectification series circuits 6A to 6F is obtained, the switch SW21,
SW22, SW23, SW31, and SW32 are turned off, and switches SW1 to SW6 are turned on, and output terminals 7A1 and 7
A2, between output terminals 7B1 and 7B2, output terminal 7C
The output voltage V is taken out between 1, 7C2, between the output terminals 7D1, 7D2, between the output terminals 7E1, 7E2, and between the output terminals 7F1, 7F2.

In order to extract a DC voltage 2V which is twice the DC voltage V, the switches SW31 and SW32 are turned off and SW2 is turned off.
1 and SW1 are turned on to output terminals 7A1 and 7B2, while SW22 and SW3 are turned on and output terminals 7C1 and
During 7D2, SW23 and SW5 are turned on, and an output voltage of 2V is extracted from between the output terminals 7E1 and 7F2.

To extract a DC voltage 3V three times the DC voltage V, the switch SW22 is turned off, and the switches SW21 and SW3 are turned off.
1 and SW1 are turned on to take out the output voltage 3V from between the output terminals 7A1 and 7C2, and SW23, SW32 and SW4 to turn on and take out the output voltage from between the output terminals 7D1 and 7F2.

To take out a DC voltage 4V four times the DC voltage V, the switch SW32 is turned off, and the switches SW21 and SW2 are turned off.
2. Turn on SW31 and SW1 to output terminals 7A1,
During the period 7D2, or the switches SW21 and SW23 are turned off, and the switches SW22, SW31, SW32 and SW2 are turned on, and between the output terminals 7B1 and 7E2, or the switch SW31 is turned off, and the switches SW22, SW23, SW32 and SW3 are turned on. Then, an output voltage of 4 V is taken out between the output terminals 7C1 and 7F2.

To extract a DC voltage 5V that is five times the DC voltage V, the switch SW23 is turned off, and the switches SW21 and SW2 are turned off.
2, SW31, SW32 and SW1 are turned on to output voltage between output terminals 7A1 and 7E2, or switch SW21 is turned off and SW22, SW23, SW31, SW32 and SW2 are turned on and output voltage is output between output terminals 7B1 and 7F2. Take out 5V.

To extract a DC voltage 6V which is six times the DC voltage V, SW21, SW22, SW23, SW31, S
Turn on W32 and SW1 to output terminals 7A1, 7F2
An output voltage of 6 V is taken out from between.

As described above, the switch SW is provided in the output circuit 8, and the switching of the switch SW causes the output circuit 8 to operate.
A plurality of types of output voltages can be taken out from the output terminal 7.

Next, a DC power supply facility for supplying DC power to an electric load using the above-described DC power generator will be described. In the following description, it is assumed that the DC power generator is driven by a windmill as a prime mover.

FIG. 8 is a configuration diagram of a DC power supply system according to the sixth embodiment of the present invention. In the present invention, DC power generated by the DC power generator is divided into a plurality of small-capacity batteries and charged. In this case, one battery has a capacity that can be charged even when the wind speed is the minimum. Since the terminal voltage V of the DC power generator Gen fluctuates when the wind speed changes, the fluctuation is absorbed by charging the battery.

In FIG. 8, two batteries 6V having a rated voltage of 6V are supplied from a DC generator Gen having a rated voltage of 12V.
1, charging DC power to 1, 6V2 and supplying DC power to two 6V electric loads 6VS1, 6VS2 and one 12V electric load 12VS1 are shown.

The connection circuit has diodes D1 and D2. The DC power generated by the DC power generator Gen is charged in series to the batteries 6V1 and 6V2 via the diode D2, and the electric loads 6VS1 and 6VS2 are input. When the battery is charged, the batteries 6V1, 6
V2 or the electric load 6VS1 from the DC power generator Gen,
Supply DC power to 6VS2. In addition, electric load 12V
When S1 is ON, DC power is supplied from the DC power generator Gen to the electric load 12VS1. On the other hand, DC power is also supplied from the batteries 6V1 and 6V2 to the electric load 12VS1 via the diode D1.

According to the sixth embodiment, two small-capacity batteries 6V1 and 6V2 are prepared, and the power generated by the DC power generator Gen is charged.
DC power is supplied to the S1 and 6VS2 from the batteries 6V1 and 6V2, and the battery 6V is supplied to the electric load 12VS1.
1, 6 V2 and the DC power generator Gen, so that DC power can be supplied from the DC power generator Ge.
Even if the output of n fluctuates, two types of electric loads 6V are stable.
DC power can be supplied to S and 12VS.

FIG. 9 is a configuration diagram of a DC power supply system according to the seventh embodiment of the present invention. In the seventh embodiment, two DC power generators G having a rated voltage of 12 V are used.
DC power is supplied to four types of electric loads 6VS, 12VS, 18VS, and 24VS with en1, Gen2 and four batteries 6V1, 6V2, 6V3, and 6V4 having a rated voltage of 6V. Then, the system of the DC power generator Gen1 and the system of the DC power generator Gen2 are connected in series by the diode D5 of the connection circuit.

The connection circuit has diodes D1 to D5. The DC power generated by the DC power generator Gen1 is charged in series to the batteries 6V1 and 6V2 via the diode D2, and the electric loads 6VS1 and 6VS2 are input. , When charging, battery 6V1,
6V2 or DC load 6VS from DC generator Gen1
Supply DC power to 1,6VS2. Electric load 1
When 2VS1 is turned on, the DC power generator Ge
DC power is supplied from n1 to the electric load 12VS1. On the other hand, DC power is also supplied from the batteries 6V1 and 6V2 to the electric load 12VS1 via the diode D1.

Similarly, the DC power generated by the DC power generator Gen2 is supplied to the batteries 6V3 and 6V4 by the diode D.
4 and the electric load 6VS
When 3,6 VS4 is turned on, the battery 6V3, 6V4 or the DC power generator Gen2 is simultaneously charged.
Supplies DC power to the electric loads 6VS3 and 6VS4. When the electric load 12VS2 is turned on, DC power is supplied from the DC power generator Gen2 to the electric load 12VS2. On the other hand, DC power is also supplied from the batteries 6V3 and 6V4 to the electric load 12VS2 via the diode D3.

The supply of DC power to the electric load 12VS3 is supplied to the batteries 6V2, 6V3 via the diode D5.
Supplied from

The supply of the DC power to the electric load 18VS1 is performed by the batteries 6V1 through the diodes D1 and D5.
DC power supplied from 6V2 and 6V3 and supplied to the electric load 18VS2 is supplied from batteries 6V2, 6V3 and 6V4 via diodes D5 and D3.

The supply of DC power to the electric load 24VS1 is performed via the diode D5 by the DC power generator Gen.
1, supplied from Gen2 and a diode D1,
Battery 6V1, 6V2, 6V via D5, D3
Supplied from 3,6V4.

According to the seventh embodiment, four small-capacity batteries 6V1, 6V2, 6V3, and 6V4 are prepared, and the power generated by the two DC power generators Gen1 and Gen2 is charged. Four types of electrical loads 6VS, 12VS,
18VS, 24VS, batteries 6V1, 6V2, 6
Since DC power can be supplied from V3, 6V4 or the DC power generators Gen1, Gen2, even if the output of the DC power generator Gen fluctuates, the DC power is stably supplied to the four types of electric loads 6VS, 12VS, 18VS, 24VS. Power can be supplied.

FIG. 10 is a configuration diagram of a DC power supply system according to the eighth embodiment of the present invention. In the eighth embodiment, two DC power generators G having a rated voltage of 6 V are used.
DC power is supplied to two types of electric loads 6VS and 12VS with en1, Gen2 and four batteries 6V1, 6V2, 6V3, and 6V4 having a rated voltage of 6V.

In FIG. 10 (a), the connection circuit has diodes D6 to D8. The DC power generated by the DC power generator Gen1 is charged into the batteries 6V1 and 6V2, respectively, and the electric loads 6VS1 and 6VS2 are input. When the battery is charged, the batteries 6V1, 6
Electric load 6VS from V2 or DC generator Gen1
Supply DC power to 1,6VS2.

Similarly, the connection circuit is a DC power generator Gen
And charging the batteries 6V3 and 6V4 with the electric loads 6VS3 and 6VS4, respectively.
When charging, the battery 6
DC power is supplied from V3, 6V4 or the DC power generator Gen2 to the electric loads 6VS3, 6VS4.

When the electric load 12VS1 is turned on, the DC power generator Ge is connected via the diode D6.
DC power is supplied from n1 and Gen2 to the electric load 12VS1. On the other hand, DC power is also supplied from the batteries 6V1 and 6V3 to the electric load 12VS1 via the diode D6.

When the electric load 12VS2 is turned on, the DC power generators Gen1 and Gen1 are connected via the diode D7.
DC power is supplied from Gen2 to the electric load 12VS2. On the other hand, DC power is also supplied from the batteries 6V2 and 6V4 to the electric load 12VS2 via the diode D7.

When the electric load 12VS3 is turned on, the direct current generators Gen1 and Gen2 are connected to the electric load 12VS3 via the diode D7 or the diode D8.
Supply DC power to On the other hand, battery 6V1, 6V
4 supplies DC power to the electric load 12VS3 via the diode D8.

Here, even if a diode D5 is provided as shown in FIG. 10B in place of the diodes D6, D7 and D8, the same operation as in FIG. 10A can be obtained.

According to the eighth embodiment, two small-capacity DC power generators Gen 1 and Gen 1 having a rated voltage of 6 V are provided.
2, DC power can be stably supplied to the two types of electrical loads 6VS and 12VS.

FIG. 11 is a configuration diagram of a DC power supply system according to the ninth embodiment of the present invention. The ninth embodiment is obtained by adding a diode D5 to the eighth embodiment shown in FIG. This makes it possible to double the DC current when supplying DC power from the batteries 6V1, 6V2, 6V3, 6V4 to the electric loads 12VS1, 12VS2, 12VS3.

That is, regarding the supply of DC power to the electric load 12VS1, the battery 6 is connected via the diode D6.
Since two circuits are formed, a circuit supplied from V1 and 6V3 and a circuit supplied from batteries 6V2 and 6V4 via the diode D5, the supplied DC current can be doubled.

Regarding the supply of DC power to the electric load 12VS2, the batteries 6V2 and 6V are connected via the diode D7.
4 and a circuit supplied from the batteries 6V1 and 6V3 via the diode D5, so that the supplied DC current can be doubled.

Regarding the supply of the DC power to the electric load 12VS3, the batteries 6V1 and 6V are connected via the diode D8.
4 and a circuit supplied from the batteries 6V2 and 6V3 via the diode D5, so that the supplied DC current can be doubled.

Therefore, the electric loads 12VS2, 12VS
DC power can be supplied stably even when 2, 12 VS3 is a large load.

FIG. 12 is a configuration diagram of a DC power supply system according to the tenth embodiment of the present invention. In the tenth embodiment, one DC power generation device Gen is divided into two units.
It is intended to be used as a power supply.

FIG. 12A shows one DC power generator Gen according to the eighth embodiment shown in FIG.
It is divided into two power supplies with diodes D5 and D9 interposed between the high resistances R1 and R2. Then, the batteries 6V1 and 6V2 and the batteries 6V3 and 6V4 of each divided group are connected in parallel, and one DC power generator Gen and four batteries 6V1, 6V2,
Two types of electrical loads 6VS and 12VS are secured at 6V3 and 6V4. This simplifies the equipment since only one DC power generator Gen is required.

FIG. 12B shows one DC power generator Ge.
n is divided into two groups of batteries 6V1, 6V
2 and the battery 6V3, 6V4 between the diode D5
Are divided through. Then, the batteries 6V1, 6V2 and the battery 6
V3 and 6V4 are connected in parallel, and one DC power generator Gen and four batteries 6V1, 6V2 and 6V
Two electric loads of 6VS and 12VS are secured at 3, 6V4. This simplifies the equipment with only one DC power generator Gen, and eliminates the need for high resistance, so that a better result is obtained than in the case of FIG.

Here, as shown in FIGS. 6 and 7, regardless of the power supply division of one DC power generator Gen, the necessary output voltage is appropriately supplied from the output terminal 7 of the output circuit 8 of the DC power generator Gen. May be taken out. For example, FIG.
The DC voltage 3V is taken out between the output terminals 7A1 and 7C2 of the output circuit 8 shown in FIG.
A DC voltage of 3 V is taken out from between. This is the same as the case where one DC power generation device Gen is divided into two power supplies. Also in this case, no high resistance is required.

Further, a part of the plurality of batteries is constituted by batteries having different rated voltages, and the batteries are respectively connected to output terminals having the same voltage among a plurality of types of output voltages of the DC power generator Gen. May be.

Next, the electrical characteristics of the DC power generator Gen will be described. The terminal voltage V, the induced electromotive force E, and the generated power P of the DC power generator Gen are represented as follows.

V = E−Ra · Ia (1) E = k1 · Φ · n (2) P = E · Ia = k1 · Φ · n · Ia (3) V: Terminal voltage E: Induction Power (electromotive voltage) Ra: armature winding resistance Ia: armature current (load current) Φ: magnetic flux n: rotor speed k1: constant

The DC power generator Gen is driven by a windmill, and there are a case where the windmill is controlled at a constant speed with respect to a change in wind speed, and a case where such control is not performed.

(1) When the Wind Turbine is Controlled at a Constant Speed In this case, as can be seen from the equation (3), the fluctuation of the wind speed appears as the fluctuation of the armature current Ia. Further, the induced electromotive force is kept constant, and the terminal voltage V slightly fluctuates according to the fluctuation of the armature current Ia. For example, when the wind speed increases, the armature current Ia increases and the terminal voltage V slightly decreases. Also, due to the increase in the armature current Ia, the battery that cannot be consumed by the electric load is charged to the battery.

On the other hand, when the wind speed decreases, the armature current Ia decreases, and the decrease in the terminal voltage V decreases. Further, when the DC power consumed by the electric load cannot be supplied due to the decrease in the armature current Ia, the DC power is supplied from the battery to the electric load.

As described above, when the wind turbine is controlled to be constant, the terminal voltage V of the DC power generator Gen is kept substantially constant, and the fluctuation of the wind speed is absorbed by the increase and decrease of the armature current Ia.

(2) A case where the wind turbine is not controlled at a constant speed In this case, as can be seen from the equation (3), the fluctuation of the wind speed appears as a fluctuation of both the rotational speed n of the rotor and the armature current Ia.

For example, when the wind speed increases, both the rotation speed n of the rotor and the armature current Ia increase. As the number of revolutions n of the rotor increases, the induced electromotive force E increases as can be seen from equation (2), and as can be seen from equation (1), although there is a voltage drop due to the increase in the armature current Ia, the terminal voltage V also increases. Become. Also, due to the increase in the armature current Ia, the battery that cannot be consumed by the electric load is charged to the battery.

When the wind speed decreases, both the rotor speed n and the armature current Ia decrease. When the number of revolutions n of the rotor decreases, the induced electromotive force E decreases as can be seen from the equation (2), and the terminal voltage V can be reduced although the voltage drop due to the decrease in the armature current Ia is reduced as can be seen from the equation (1). Is also smaller. Further, when the DC power consumed by the electric load cannot be supplied due to the decrease in the armature current Ia, the DC power is supplied from the battery to the electric load.

In the present invention, any system can be adopted. In the above-described sixth, seventh, and tenth embodiments, a DC power generator Gen having a rated voltage of 12 V is used, and in the eighth and ninth embodiments, , DC generator G with a rated voltage of 6V
The case where en was used is shown. In these embodiments, when controlling the rotation speed of the windmill at a constant speed,
The terminal voltage V of the DC power generator Gen is maintained at a substantially constant voltage, and when the rotation speed of the windmill is not controlled at a constant speed, the terminal voltage V of the DC power generator Gen fluctuates depending on the wind speed.

FIG. 13 is a configuration diagram of a DC power supply system according to the eleventh embodiment of the present invention. The eleventh embodiment is a case where the rotation speed of the wind turbine is not controlled at a constant speed, and has a constant width of 6 V to 12 V as a rated voltage of the DC power generator Gen.

Then, as a rated voltage, a fixed width of 6 V to 1
Two DC generators Gen1 and Gen2 with 2V
And four batteries 6V1, 6V with a rated voltage of 6V
With two batteries 12V1 and 12V2 having 2, 6V3 and 6V4 and a rated voltage of 12V, four types of electric loads 6 are provided.
DC power is supplied to VS, 12VS, 18VS and 24VS. In addition, the battery 12V whose rated voltage is 12V,
A battery constituted by connecting two batteries 6V having a rated voltage of 6V in series may be used.

In the eleventh embodiment, a battery to be charged with DC power is selected in accordance with a change in the output voltage of the DC power generators Gen1 and Gen2. For example, when the output voltage is less than 12V, a battery 6V with a rated voltage of 6V is selected and charged, and when the output voltage exceeds 12V, a battery 12V with a rated voltage of 12V is selected and charged.

The connection circuit has diodes D5 to D9 and switches SW11 and SW12. Switch SW1
1, SW12 is connected to the 6V terminal side (upper terminal in the figure) when the output voltage of the DC power generators Gen1 and Gen2 is less than 12V, and is connected to the 12V terminal side (lower terminal in the figure) when the output voltage is 12V or more. ).

When the switch SW11 is connected to the 6V terminal side, the DC power generated by the DC power generator Gen1 is charged in the batteries 6V1 and 6V2, respectively. Similarly, when the switch SW12 is connected to the 6V terminal side, the DC power generated by the DC power generator Gen2 is charged in the batteries 6V3 and 6V4, respectively. In this case, the DC power is not charged in the batteries 12V1 and 12V2 from the DC power supply devices Gen1 and Gen2.

On the other hand, when the switch SW11 is connected to the 12V terminal side, the DC power generated by the DC power generator Gen1 is charged to the battery 12V1. Similarly, when the switch SW12 is connected to the 12V terminal side, the DC power generated by the DC power generator Gen2 charges the battery 12V2. In this case, the DC power supply G is connected to the batteries 6V1, 6V2, 6V3, and 6V4.
DC power is not charged from en1 and Gen2.

As described above, the DC power generators Gen1, Ge
The switches SW11 and SW12 are switched in accordance with the output voltage of n2, and DC power is charged to the batteries whose voltage values match.

The connection circuit has diodes D5 to D10 and switches SW11 and SW12. Switch SW
11, SW12 is connected to the 6V terminal side (upper terminal in the figure) when the output voltage of the DC power generators Gen1 and Gen2 is less than 12V, and is connected to the 12V terminal side (lower terminal in the figure) when the output voltage is 12V or more. ).

When the switch SW11 is connected to the 6V terminal side, the DC power generated by the DC power generator Gen1 charges the batteries 6V1 and 6V2, respectively.
At the same time, when the electric loads 6VS1 and 6VS2 are turned on, the batteries 6V1 and 6V2 are simultaneously charged.
Alternatively, the electric loads 6VS1, 6
DC power is supplied to VS2.

Similarly, the DC power generated by the DC power generator Gen2 charges the batteries 6V3 and 6V4 when the switch SW12 is connected to the 6V terminal. At the same time, when the electric loads 6VS3 and 6VS4 are on, the battery 6V
3, 6V4 or DC generator Gen2 to electrical load 6
DC power is supplied to VS3 and 6VS4.

Here, the DC power to the electric loads 6VS1 and 6VS2 is supplied to the DC power generator Gen1 or the battery 6VS.
V1 and 6V2, and electric loads 6VS3 and 6VS
4 is supplied from the DC power generator Gen2 or the batteries 6V3, 6V3. Electric load 12VS
1 is supplied from the DC power generators Gen1, Gen2 via the diodes D9, D5, D7, and the battery 6 via the diodes D9, D5, D8.
Supplied from V1 and 6V4.

Similarly, the DC power to the electric load 12VS2 is supplied from the DC power generators Gen1, Gen2 via the diodes D9, D5, D7, and the batteries 6V2, 6V via the diodes D9, D5, D8.
Supplied from 3. DC power to the electric load 12VS3 is supplied from the DC power generators Gen1, Gen2 via diodes D9, D5, D7, and from the batteries 6V1, 6V3 via diodes D9, D5, D8. DC power to the electric load 12VS4 is supplied to the DC power generator Gen through the diodes D9, D5, and D7.
1, supplied from Gen2 and a diode D9,
Power is supplied from batteries 6V2 and 6V4 via D5 and D8.

The DC power to the electric load 12VS5 is supplied to the DC power generator Gen through the diodes D6 and D9.
1 and from the battery 12V1. The DC power to the electric load 12VS6 is supplied from the DC power generator Gen2 via the diodes D7 and D10, and from the battery 12V2.

The DC power to the electric load 18VS1 is supplied to the diode D6, D5, D7 or the diode D6.
6, D9, D5, D7, the DC power generator Gen1,
2, and from the batteries 12V1, 6V3 via diodes D5, D8.

The DC power to the electric load 18VS2 is supplied from the DC power generators Gen1 and Gen2 via the diodes D5 and D7 or the diodes D9, D5 and D7, and the battery 12 via the diodes D5 and D8.
Supplied from V1 and 6V4.

The DC power to the electric load 18VS3 is supplied from the DC power generators Gen1 and Gen2 via the diodes D5 and D7 or the diodes D9 and D5, and the batteries 6V1 and D2 via the diodes D9 and D5.
Supplied from 12V2.

The DC power to the electric load 18VS4 is supplied from the DC power generators Gen1, Gen2 via the diodes D5, D7 or the diodes D9, D5, D7, and the battery 6V via the diodes D9, D5.
Supplied from 2,12V2.

The DC power to the electric load 24VS1 is supplied to the DC power generator G via diodes D6, D9, D5 and D7.
en1 and Gen2, and a diode D
5 from the batteries 12V1, 12V2.

The diodes D9 and D10 also serve to prevent DC current from flowing into the 6V terminal when the 12V terminal is selected by the switches SW11 and SW12.

In the above description, the switches SW11, SW
12, the battery for charging the DC power is switched. However, as shown in FIG.
Instead of 1, diodes D11 and D12 may be provided, and diodes D13 and D14 may be provided instead of switch SW12. In this case, a battery 6V with a rated voltage of 6V and a battery 12V with a rated voltage of 12V
Is automatically switched.

According to the eleventh embodiment, in accordance with the output voltage of the DC power generator Gen, the battery is charged by switching to one of the battery 6V having a rated voltage of 6V and the battery 12V having a rated voltage of 12V. Therefore, even if the output voltage of the DC power generator Gen fluctuates due to the fluctuation of the wind speed, the DC current can be appropriately charged.

[0123]

As described above, according to the DC power generator of the present invention, a DC voltage can be obtained without the necessity of a commutator or a brush, so that no special maintenance is required. Also,
DC voltages obtained from the armature windings of each pole of the stator are connected in series to form a rectified series circuit. Since the voltage can be extracted, power can be easily supplied to the electric loads of different voltage classes.

According to the DC power supply system of the present invention, a plurality of small-capacity batteries are prepared and the power generated by the DC power generator is charged, so that the output of the DC power generator fluctuates. Even stably, DC power can be supplied to electric loads of different voltage classes. In addition, since a plurality of batteries having different rated voltages can be charged with DC power in accordance with the output voltage of the DC power generator, the battery can be properly charged even if the output voltage of the DC power generator fluctuates. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a DC power generator according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a DC power generator according to a second embodiment of the present invention.

FIG. 3 is an explanatory view of a DC power generator according to a third embodiment of the present invention.

FIG. 4 is an explanatory diagram of a DC power generator according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram of a DC power generator according to a fifth embodiment of the present invention.

FIG. 6 is a circuit diagram showing an example of an output circuit of the DC power generator according to the embodiment of the present invention.

FIG. 7 is a circuit diagram showing another example of the output circuit of the DC power generator according to the embodiment of the present invention.

FIG. 8 is a configuration diagram of a DC power supply facility according to a sixth embodiment of the present invention.

FIG. 9 is a configuration diagram of a DC power supply facility according to a seventh embodiment of the present invention.

FIG. 10 is a configuration diagram of a DC power supply facility according to an eighth embodiment of the present invention.

FIG. 11 is a configuration diagram of a DC power supply facility according to a ninth embodiment of the present invention.

FIG. 12 is a configuration diagram of a DC power supply facility according to a tenth embodiment of the present invention.

FIG. 13 is a configuration diagram of a DC power supply facility according to an eleventh embodiment of the present invention.

FIG. 14 is a configuration diagram showing another example of the DC power supply equipment according to the eleventh embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 stator, 2 armature winding, 3 rotor, 4 rectifier, 5 rectifier, 6 rectifier series circuit, 7 output terminal, 8
… Output circuit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) // H02P 9/48 H02P 9/48 BF term (reference) 5G065 AA00 DA02 DA06 EA07 HA01 JA05 MA01 MA10 5H006 AA00 BB06 CA07 CB01 CC03 CC04 DA04 HA10 5H590 AA15 AB01 AB11 CA21 CC13 CC22 CD01 CE02 CE05 EB12 FA05 FC17 GA02 5H621 AA03 BB10 GA11

Claims (7)

[Claims] 1. A rotor having two magnetic poles of N and S poles, a stator having armature windings applied to each of three poles, and an output of each armature winding. A DC power generator comprising: a rectifier for rectifying a voltage; a rectifier series circuit formed by connecting the rectifiers in series; and an output terminal for extracting a DC voltage synthesized from the rectifier series circuit. 2. 2n which is an integer n times the number of two poles of the north pole and the south pole
Rotor with three poles, 3n
A stator having armature windings applied to each of the poles, a rectifier for rectifying the output voltage of each armature winding, and a rectifier formed by connecting three mutually adjacent rectifiers in series; A DC power generator comprising: a series circuit; an output circuit in which the rectified DC circuits are connected in series or in parallel; and an output terminal for extracting a DC voltage from the output circuit. 3. The DC power generator according to claim 1, wherein a plurality of armature windings are applied to each pole of the stator. 4. The output circuit has a changeover switch at a connection point where the rectification series circuit is connected in series or in parallel,
3. The method according to claim 2, wherein a DC voltage taken out of said output terminal is varied by switching said changeover switch.
Or the direct-current power generator according to claim 3. 5. The DC power generator according to claim 1, further comprising a plurality of batteries for charging the DC power generated by the DC power generator and supplying the DC power to an electric load. A connection circuit forming a series circuit or a parallel circuit of the plurality of batteries and supplying a DC power having a voltage corresponding to a rated voltage of the electric load to the electric load. . 6. A part of the plurality of batteries is constituted by batteries having different rated voltages, and the connection circuit is configured to connect the batteries to output terminals of the plurality of types of output voltages of the DC power generation device whose voltages match. The DC power supply equipment according to claim 5, wherein the DC power supply equipment is connected. 7. The battery according to claim 5, wherein a part of the plurality of batteries is constituted by batteries having different rated voltages, and a battery for charging DC power is selected according to a change in output voltage. DC power supply equipment.