JP2000037097A - Wind power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wind power generator capable of charging a charger with high efficiency even under the condition of a breeze. SOLUTION: This power generator is provided with an AC power generator 3 having a plurality of coils, a volt meter 5 which measures induced electromotive force generated by the AC power generator, and a coil control means 6 which changes a connecting method of the coil of the AC power generator 3 to a charger 4 and its quantity. Thus, it is possible to charging the charger with high efficiency even under the condition of a breeze.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind power generator for converting wind energy into electricity and utilizing natural energy effectively.

[0002]

2. Description of the Related Art In recent years, the use of natural energy has been reconsidered, and wind power generators utilizing wind power must be able to use wind energy with a small breeze, generate power efficiently, and generate power. There is a growing demand for effective use of the generated power.

Conventionally, an example of this type of wind power generator is shown in FIG. Hereinafter, the configuration will be described with reference to FIG.

As shown in the figure, a transmission shaft 102 of a blade 101 rotated by wind power is provided, and an AC generator 103 is rotated by the rotation force of the transmission shaft 102.

[0005] The rotation of the AC generator 103 generates an induced electromotive force, and the battery 104 is charged.

[0006]

In such a conventional wind power generator, the storage battery 104 is not charged unless the electromotive force generated by the rotation of the AC generator 103 exceeds a certain level. There was a problem that it could not be used.

[0007] Further, even if the electromotive force generated by the rotation of the AC generator 103 becomes too large, the charging speed of the battery 104 is not increased, so that there is a problem that the energy generated by the strong wind cannot be effectively used.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a wind power generator capable of utilizing power generation energy in a light wind and effectively utilizing power generation energy in a strong wind.

[0009]

In order to achieve the above object, a wind power generator according to the present invention comprises: a voltmeter for measuring the magnitude of an induced voltage generated by an AC generator; A configuration is provided with coil control means for changing the connection configuration of the coil of the AC generator to the battery.

According to the present invention, it is possible to provide a wind power generator capable of charging a battery even in a small wind and effectively utilizing the generated energy for charging the battery even in a strong wind.

The other means is provided with an anemometer and a coil control means for changing a connection configuration of a coil of the AC generator to a capacitor from the wind speed measured by the anemometer.

According to the present invention, it is possible to provide a wind power generator capable of charging a battery even in a slight wind, and effectively utilizing generated energy for charging the battery even in a strong wind.

[0013] Another means includes a plurality of capacitors, a voltmeter for measuring the magnitude of an induced voltage generated by the AC generator, and a number of capacitors for determining the number of series-connected capacitors from the voltage measured by the voltmeter. This is a configuration provided with control means.

According to the present invention, it is possible to provide a wind power generator that can effectively use the generated energy for charging the battery during strong winds.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claims 1 and 2 of the present invention comprises a blade rotating by wind power, a transmission shaft connected to the blade, and a plurality of coils, wherein the rotation of the transmission shaft causes the coil to rotate. An AC generator that generates an induced voltage to generate power, a capacitor that stores the induced voltage generated by the AC generator, a voltmeter that measures the magnitude of the induced voltage generated by the AC generator, and the voltmeter. A coil control means for changing a connection configuration of the coil of the alternator to the capacitor from the measured voltage is provided, and the number of coils of the alternator connected to the capacitor is determined by the magnitude of the induced voltage. And has the effect of determining the number of units connected in parallel.

According to a third aspect of the present invention, there is provided a blade which is rotated by wind power, a transmission shaft connected to the blade, and a plurality of coils, wherein the rotation of the transmission shaft generates an induced voltage in the coil to generate electric power. An alternator, an accumulator for storing an induced voltage generated by the alternator, an anemometer, and a coil control for changing a connection configuration of a coil of the alternator to the accumulator from a wind speed measured by the anemometer. In this configuration, the number of coils of the AC generator connected in series and the number of coils connected in parallel to the battery are determined based on the magnitude of the wind speed.

According to a fifth aspect of the present invention, there is provided a blade rotating by wind power, a transmission shaft connected to the blade, an AC generator for generating an induced voltage by generating an induced voltage in a coil by rotation of the transmission shaft, A plurality of capacitors for storing the induced voltage generated by the alternator, a voltmeter for measuring the magnitude of the induced voltage generated by the alternator, and changing the number of series-connected capacitors from the voltage measured by the voltmeter The number of capacitors connected to the AC generator is determined in accordance with the magnitude of the induced voltage.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0019]

Embodiment 1 FIG. 1 shows a configuration diagram of a wind power generator. In FIG. 1, an AC generator 3 is rotated by the torque of a transmission shaft 2 rotated by a blade 1 rotated by wind power. Then, the induced electromotive force is generated by the rotation of the AC generator 3, and the battery 4 is charged. The induced electromotive force generated by the rotation of the alternator 3 is measured by the voltmeter 5 and input to the coil control means 6. Then, the coil control means 6 determines the coil connection configuration of the AC generator 3 based on the magnitude of the induced electromotive force.

Next, the operation will be described. FIG. 2 is a flowchart showing the operation of the wind turbine generator.

In FIG. 2, when power generation is started, first,
All coils of the alternator 3 are connected in series to the battery 4 (201). Then, the induced electromotive force (V) of the alternator 3 is measured by the voltmeter 5 (202), and when the relation of V> Vmax is established, the coil control means 6 looks at the connection state of the coils and connects in series. If they are connected, the number of series connections is reduced by one, and if they are connected in parallel, the number of parallel connections is increased by one (203 to 206).

When the relation of V <Vmin is established, the coil control means 6 checks the connection status of the coils, increases the number of serial connections by one when connected in series, and increases the number of serial connections by one when connected in parallel. Reduces the number of parallel connections by one (203, 207-209).

Here, Vmax and Vmin are values determined by the operator in advance so that the relationship of Vmax>Vmin> Vs is satisfied, where Vs is the minimum electromotive force required to charge the battery 4.

Thereafter, the process returns to step 202 until the power generation is completed, and the same operation is repeated to charge the battery 4.

As described above, according to the wind turbine generator of the first embodiment of the present invention, the coil control means 6 determines whether the induced electromotive force generated by the rotation of the AC generator 3 is large or small. Change the connection configuration.

That is, assuming that the number of coils of the alternator 3 is n, in the case of light wind, the induced electromotive force necessary for charging the battery 4 is secured by connecting the n coils in series,
As the wind speed increases and the induced electromotive force increases, the number of coils connected in series is reduced to n-1, n-2,. When the induced electromotive force is increased, the connection is switched to the parallel connection, and the number of the connections is increased to 1, 2,..., N−1, n, thereby increasing the charging current to the battery 4.

As a result, a wind power generator capable of effectively charging the battery 4 is obtained.

It should be noted that the coil control means 6 controls the average of the induced electromotive force measured by the voltmeter 5 for several tens of seconds, so that the coil connection method and the number of connected coils are not frequently changed. Needless to say.

(Embodiment 2) FIG. 3 shows a configuration diagram of a wind turbine generator. In FIG. 3, an anemometer 7 measures the wind speed near the wind turbine generator, inputs the measured wind speed to a coil control means 8, and controls the coil. The means 8 determines the coil connection configuration of the alternator 3 according to the magnitude of the wind speed.

Next, the operation will be described. FIG. 4 is a flowchart illustrating the operation of the wind turbine generator.

In FIG. 4, when power generation is started, first,
All the coils of the alternator 3 are connected in series (40
1). Then, the anemometer 7 measures the wind speed (F) near the wind power generator (402), and the coil control means 8 determines the connection method and the number of coils according to the connection number determination table shown in Table 1 (403). .

Here, F1, F2,... Fn, Fn + 1,.
.. F2n is a value determined in advance by the operator so that the relationship of F1 <F2 <... <Fn <Fn + 1 <.

[0033]

[Table 1]

Thereafter, the operation returns to 402 until the power generation is completed, and the same operation is repeated to charge the battery 4. And
It is determined that power generation has ended (410), and the process ends.

As described above, according to the wind power generator of the second embodiment of the present invention, the coil control means 8 changes the connection configuration of the coil of the AC generator 3 to the battery 4 depending on the magnitude of the wind speed near the wind power generator. Let it.

That is, assuming that the number of coils of the alternator 3 is n, in the case of light wind, the induced electromotive force necessary for charging the battery 4 is secured by connecting the n coils in series.
As the wind speed increases, the number of coils connected in series becomes n-
By reducing the number to 1, n-2,... 2, 1, the loss due to the series connection is reduced to increase the power generation efficiency, and when the wind speed is further increased, the connection is switched to the parallel connection this time, and the number is set to 1,
By increasing to 2,... N−1, n, the charging current to the battery 4 is increased.

As a result, a wind power generator capable of effectively charging the battery 4 is obtained.

Since the coil control means 8 controls the wind speed measured by the anemometer 7 by averaging for several tens of seconds, it is needless to say that the coil connection method and the number of connected coils are not frequently changed. Nor.

(Embodiment 3) FIG. 5 shows a configuration diagram of a wind turbine generator. In FIG. 5, a voltmeter 9 measures the induced electromotive force of the AC generator 3 and inputs the measured electromotive force to the storage battery number control means 10. . The number-of-capacitors control means 10 controls the capacitors 4-1, 4-2,..., 4-
The number of n connected in series is determined.

Next, the operation will be described. FIG. 6 is a flowchart showing the operation of the wind turbine generator.

In FIG. 6, the voltmeter 9 measures the induced electromotive force (V) of the alternator 3 (601), and the number-of-capacitors control means 10 determines the magnitude of the induced electromotive force (V) as follows: V> Ve When V> 2 * Ve, 2 units connected in series ・ ・ ・ When V> (n-1) * Ve, n units connected in series When V> n * Ve, determine the number of capacitors 4-1, 4-2,..., 4-n connected in series, such as n units connected in series.

Here, Ve is the storage capacitors 4-1 and 4-2,
.., 4-n is a value determined in advance by the operator with the minimum electromotive force required to charge one of the four devices.

Thereafter, the operation returns to step 601 until the power generation is completed, and the same operation is repeated to charge the battery 4.

As described above, according to the wind turbine generator of the third embodiment of the present invention, the number-of-capacitors control means 10
4-1, 4-2,... Depending on the magnitude of the induced electromotive force
., 4-n is determined in series.

In other words, when the induced electromotive force generated by the AC generator 3 is small in a breeze, the number of capacitors 4 connected in series is reduced, and as the wind speed increases and the induced electromotive force generated by the AC generator 3 increases, The number of units connected in series will be increased.

As a result, a wind power generator can be obtained which can effectively use the induced electromotive force generated in the AC generator 3 and charge the battery 4 efficiently.

It should be noted that since the number-of-capacitors control means 10 controls the average of the induced electromotive force measured by the voltmeter 9 for several tens of seconds, the number of capacitors connected in series is not frequently changed. Needless to say.

[0048]

As is apparent from the above embodiments, according to the present invention, the method of connection and connection of the coil of the AC generator to the battery by the coil control means depends on the magnitude of the induced electromotive force generated in the AC generator. Since the number of units was changed,
It is possible to provide a wind power generation device that can easily charge a battery even in a breeze, and that can effectively use the induced electromotive force generated in an AC generator to charge the battery.

Further, since the control means changes the connection method and the number of connected coils of the AC generator to the battery according to the magnitude of the wind speed in the vicinity of the wind power generator, the battery can be easily charged even in a slight wind. In addition, it is possible to provide a wind power generator that can effectively use the induced electromotive force generated by the AC generator for charging the battery.

Further, since the number-of-capacitors control means is configured to change the number of series-connected capacitors to the AC generator coil according to the magnitude of the induced electromotive force generated in the AC generator,
It is possible to provide a wind turbine generator that can effectively use the induced electromotive force generated by the AC generator for charging the battery.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a wind turbine generator according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the wind turbine generator according to the first embodiment;

FIG. 3 is a configuration diagram of a wind turbine generator according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the wind turbine generator according to the second embodiment.

FIG. 5 is a configuration diagram of a wind turbine generator according to a third embodiment of the present invention.

FIG. 6 is a flowchart illustrating the operation of the wind turbine generator according to the third embodiment.

FIG. 7 is a configuration diagram of a conventional wind power generator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blade 2 Transmission shaft 3 Alternator 4 Battery 5 Voltmeter 6 Coil control means 7 Anemometer 8 Coil control means 9 Voltmeter 10 Battery number control means

Claims (5)

[Claims] An AC generator having a blade rotating by wind power, a transmission shaft connected to the blade, a plurality of coils, and generating an induced voltage in the coil by rotation of the transmission shaft to generate electric power; A capacitor for storing the induced voltage generated by the generator, a voltmeter for measuring the magnitude of the induced voltage generated by the AC generator, and a voltage of the coil of the AC generator from the voltage measured by the voltmeter to the capacitor. A wind power generator including a coil control unit for changing a connection configuration. 2. The coil control means determines the number of coils connected in series to an accumulator and the number connected in parallel with a capacitor according to the magnitude of an induced voltage generated by an AC generator measured by a voltmeter. The wind power generator according to claim 1, wherein: 3. An alternator comprising: a blade rotating by wind power; a transmission shaft connected to the blade; a plurality of coils; an AC generator for generating an induced voltage in the coil by rotation of the transmission shaft to generate power; A wind turbine generator comprising: a storage device for storing an induced voltage generated by a generator; an anemometer; and coil control means for changing a connection configuration of a coil of the AC generator to the storage device based on a wind speed measured by the anemometer. 4. The coil control means according to claim 1, wherein the number of coils of the alternator connected in series and the number of coils connected in parallel to the battery are determined according to the magnitude of the wind speed measured by the anemometer. Wind power equipment. 5. A blade that is rotated by wind power, a transmission shaft connected to the blade, an AC generator that generates an induction voltage by generating an induced voltage in a coil by rotation of the transmission shaft, and an induction generator that is generated by the AC generator. A plurality of capacitors for storing voltage, a voltmeter for measuring the magnitude of an induced voltage generated by the AC generator, and a number-of-capacitors control means for changing the number of series-connected capacitors from the voltage measured by the voltmeter are provided. Wind power generator.