JPS61163670A - Wind-force and solar ray combined electric power plant - Google Patents

Abstract

PURPOSE:To feed stable power in combination of the energy of wind force and solar rays, and to prevent overcharge by controlling the surface of revolution of a windmill in parallel with the direction of a wind when a fixed quantity of electricity is charged. CONSTITUTION:Load 4 and a battery 7 are supplied with power from both a wind-force electric power plant 1 and a solar-ray electric power plant 2 on sunshine, and the battery 7 is charged by excess power at that time. When a fixed quantity of electricity is charged to the battery 7, a signal 8a is transmitted over a windmill-direction regulator 5 from a voltage relay 8, and a wire 1b is wound. Consequently, a windmill 1c is turned so that the surface of revolution thereof runs parallel with the direction of a wind, electric power generation by the wind-force device 1 is stopped, and the overcharge of the battery 7 is prevented. When power generated by the solar ray device 2 is large, the device 2 is short-circuited by a resistor 10, thus obviating the overcharge of the battery 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a combined wind and solar power generation device that utilizes wind and sunlight, which are natural energies.

[Conventional technology]

Conventionally, in a wind power generation device that uses natural energy to rotate the generator using wind power, the wind direction angle of the wind turbine is adjusted according to the wind pressure and the balance K of the balance 9 eight to keep the rotation speed of the generator constant. A proposal has been made.

[Problem that the invention seeks to solve]

However, controlling the wind direction angle has the advantage of reducing the stress in strong winds, reducing mechanical strength, and reducing the fluctuation range of the generator rotation speed, but it also reduces the amount of energy that can be used in areas where the wind speed is high. This means that the integrated amount of power generated by this type of wind power generator is small, reducing economic efficiency.

This also applies to wind power generation in general, and as a matter of course there is a problem in that when the wind power is small, power cannot be generated and the power supply is unstable. Furthermore, even in the case of solar power generation, power cannot be generated at night, on rainy days, or on cloudy days, making the power supply unstable.

[Means for solving problems]

In order to obtain as stable power as possible from unsteady natural energy, this invention uses a solar power generation device in addition to a wind power generation device, and the power from both devices fluctuates depending on the natural conditions. Charging is performed in a way that compensates for excess and deficiency, stabilizing the quality and supply of electricity, and when charging reaches a predetermined ft, that is, when overcharging pressure is reached, the wind power generation device It is oriented parallel to the direction of the wind, the number of revolutions decreases, and the power starts and stops, and the solar power generation is short-circuited by a resistor to prevent charging beyond a predetermined amount.

[For production]

Charging is performed from both the wind power generation device and the solar power generation device, which act to provide a stable supply of electricity.

[Implementation row]

FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 1 is a wind power generation device that generates direct current (an alternating current generator may be used and a rectifier may be used to obtain direct current), and 2 is a solar power generator. Generator, 3 is a DC/AC inverter, DC power with fluctuating voltage? Converts to AC power of the required voltage and frequency. 4 is a load, 5 is a wind turbine direction adjustment device, 6 is a charge/discharge device, T is a storage battery, and 8'' is a charger that is charged to a predetermined amount, and when it reaches an overcharge voltage, the discharge continues from the terminal 8a, and the overdischarge occurs. A voltage relay 9 sends a control signal from a terminal 8b when the voltage approaches the voltage, and a voltage relay 9 detects the voltage generated by wind power generation and sends a signal from a terminal 9a to control the wind turbine direction switching device. 10 is a resistor that short-circuits the solar power generation device, 10a is a constant voltage Zener diode,
11 is an auxiliary power generating device such as a diesel generator. At 6 o'clock, when the signal 8a is supplied from the voltage relay 8, the wind turbine direction adjusting device #5 winds up the wire 1b shown in FIG. 2, controls the rotating surface of the wind turbine 1c to a position parallel to the wind direction, and overcharges the storage battery T is not performed.It is set to 5. In addition, this wind turbine direction adjustment device 5 uses a signal supplied from a voltage relay 9 to
The wire 1b is wound and unwound one time, and the direction of the wind turbine is adjusted.

Further, as the wind speed increases, the number of revolutions increases, and a rise in the emitted voltage Eta is detected, and the winding t of the rope 1b is completed, and the rotating surface of the wind turbine 1c is aligned 5811 so as to be parallel to the wind direction.

As the wind speed decreases, the rotational speed decreases, a drop in generator voltage is detected, and the rope 1b is unwound.

The wind power generation device 1 shown in FIG. 2 is attached to a support post 1dK, and normally is in a position where the wind turbine rotates when receiving the wind, as shown by the solid line, and the rope 1b is wound up by the control signal 8aK from the voltage relay 8. When the wind turbine is turned, it rotates to the position shown by the dotted line, making the plane of rotation of the wind turbine parallel to the wind direction. Further, the rotation adjustment is made in accordance with the maximum permissible wind speed by means of a control signal 9& from the voltage relay 9. In addition, when the signal 15 for adjusting the wind turbine direction is given manually to avoid strong winds or from a separate anemometer, the rope 1b is quickly wound up to its full extent and the wind power generation system R1 reaches the position shown by the dotted line. It is designed to rotate.

In addition, 12, 13, and 14 are diodes for blocking backflow, which allow power to flow from the wind power generation device 1 to the solar power generation device 2, or vice versa, and if further kept, from the auxiliary power generation device 11 such as diesel power generation to the wind power generation device 1. and prevents power from flowing into the solar power generation device 2. Wind power and solar power are both unsteady, so it is not clear which one will be stronger, and they change frequently, making it impossible to track them by switching switches. However, according to this proposal, the problem of power inflow between them can be easily solved. .

10& is a constant voltage Zener diode. By matching the conduction start voltage to the overcharge voltage of the accumulator, the photovoltaic output is shorted by the resistor 10 and the accumulator is protected from overcharging.

The operation of the device configured in this way is as follows. When the wind speed is low and the generated power is less than the rated capacity of the wind power generation device 1, the wind turbine 1c of the wind power generation device 1 rotates due to the wind power, and the generated output is supplied to the DC/AC inverter 3 and is also transferred to the storage battery 7. Supplied. As a result, the power converted from DC to AC is supplied to the load 4, and the storage battery 7 is charged when there is sufficient generated power.

When there is sunshine, power is also generated from the solar power generation device t2, so power is supplied to the load 4 and the storage battery 7 from both the wind power generation device 1 and the solar power generation device @2. and,
At this time, the storage battery 7 is charged with the surplus power. Wind power generator fi? , solar power generation yellow 2. The power distribution of the load is determined automatically according to the input power, that is, the intensity of wind power and solar power, and is not limited so that it can be used as much as possible.

At night, the power from the solar power generation device is no longer available, so the only power generated is from the wind power system R1. Therefore, when the wind speed is not very high, no surplus power is generated and charging is not performed. At this time, if the power supplied to the load 4 is insufficient due to the force generated by the wind power system [1], the storage battery 7 starts discharging and makes up for the power shortage.

However, on days when the sunlight is weak and the wind speed is low, the wind power generator 1. The power generated by the solar power generation device 2 becomes smaller, and the power shortage is compensated for by discharging the storage battery T. However, if this state continues, the battery capacity will eventually become exhausted and the power required for the load 4 will be reduced. supply becomes unavailable. At this time, the voltage relay 8 detects the terminal voltage of the storage battery, that is, a voltage close to the overdischarge voltage, sends out a control signal 8b to start the auxiliary power generator 11, and supplies the generated power to the load 4 and the storage battery 7. do.

When the sunlight is strong, the wind speed is high, and the generated power is greater than the power consumed by the load 4, the surplus power is charged to the storage battery 7. When this state continues for a long time and the charge of the storage battery T reaches a predetermined amount, a signal 8a is supplied from the voltage relay 8 to the wind turbine direction adjustment device 5, and the wire 1b is wound up. As a result, the rotating surface of the wind turbine 1c is rotated so as to be parallel to the wind direction, so power generation in the wind power generator 1F1 is stopped, and overcharging of the storage battery T can be prevented. However, if the load is light and the power generated by the solar power generation device 20 is large, even if the wind power generation device 1 stops generating power, the storage battery 7 may continue to be charged and reach an overcharge voltage. At this time, by short-circuiting the solar power generation device 1 with the resistor 10, the power generated by the solar power generation device 2 is no longer supplied to the storage battery T, resulting in overcharging and
can be prevented. At this time, power to the load is supplied from the storage battery T, so if this state continues, the amount of charge in the battery will eventually drop below a predetermined value, and the voltage will drop to a constant voltage Zener diode 10.
When the voltage becomes equal to or lower than the conduction start voltage of a, the short circuit caused by the resistor 101c is released and the power generated from the solar power generation device 2 is supplied again to @? rrJ and storage battery 7.

FIG. 3 is a characteristic diagram, B is a characteristic according to the present invention, the bending point of which occurs by signals 8B+9B and 15, and characteristic B1 occurs at the time when the storage battery T becomes overcharged 11C and intentionally by signal 15. e, response B2 is generated by signal 9a. In the case of C, the output will increase indefinitely due to the increase in wind speed, but the mechanical strength and sentry capacity ♀〛 will be required to be prohibitively large, and it will not be economical.

〔Effect of the invention〕

As mentioned above, this invention uses both wind and solar energy, so it is possible to provide stable 'rI (, power supply, and luminous intensity r-) [for more than 100 ft. When it is released, it has the effect of making it more powerful and thicker by force.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. Figure 2 is a side view of the wind power generator, and Figure 3 is a graph showing the wind speed vs. output characteristics of the wind power generator.Curve A shows the conventional way to adjust the wind direction angle of the wind turbine by balancing wind pressure and balance weight. A list of characteristics of the case is shown. 1... Wind power generation device, No. 2... Solar power generation device,
311... DC/AC inverter, 4...' Load, 56... Wind turbine direction adjustment device, No. 6... Charging device,
T...storage battery, 8,9...voltage relay, 10...
- Yagura/short circuit resistor, tOa fist...1 constant voltage zener diode, 111111qk+1 auxiliary power generator.

Claims (1)

[Claims] A wind power generation device in which the rotational surface of the windmill is perpendicular to the wind direction under normal conditions, and the rotational surface of the windmill is directed parallel to the wind direction by a control signal, and a solar power generation device that generates electric power from sunlight; In a combined wind/solar power generation system consisting of a storage battery and a charging device that charge these generated outputs,
A combined wind and solar power generation device characterized by being provided with a wind turbine direction adjustment device that controls the rotating surface of the wind turbine to be parallel to the wind direction when charging reaches a predetermined amount.