JP2000050499A - Generating device utilizing natural energy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption of a device itself in a standby state where a generating device utilizing natural energy cannot generate electricity by itself. SOLUTION: In a device that utilizing natural energy such as sunlight, wind, and tidal energy for generating electricity, a calendar function 8 is available, where the calendar function 8 is provided with a date and time function, a sunrise and sunset time function, a function regarding the ebb and flow time of a tide, a function for judging the start and stop of power supply to the generating device itself, or the like. In a time zone where generation cannot be made by the natural energy, the power supply to functions other that the calendar function 8 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generator for generating power using natural energy such as sunlight, wind or tidal power, and to reduce the power consumed for maintaining and managing the power generator. Things.

[0002]

2. Description of the Related Art Conventionally, fossil fuels such as coal and petroleum have been used as an energy source for a power generator. However, since such an energy source emits a large amount of CO ₂ , there is a concern that global warming may be caused. , almost no sunlight emissions of CO ₂ in recent years, wind power, have come to an attempt is made to generate electricity at the maximum power by using a clean, natural energy of tidal power, etc., the power generation method for solar power For example, a "maximum power following method"("Design and construction of a photovoltaic power generation system" edited by a photovoltaic power generation roundtable) is known.

[0003]

In power generation utilizing natural energy, the amount of energy is not always sufficiently replenished because it depends on the time, weather, latitude, longitude, and the like. There is a standby state in which power can be generated as soon as power is supplied. Therefore, at that time, the energy consumed by the power generation system in the device is provided by a commercial power source that generates power mainly using conventional fossil fuels, and the effect of reducing fossil fuel consumption, in other words, reducing CO ₂ At present, there is a limit to the effect of preventing global warming.

[0004] An object of the present invention is to cause global warming in a standby state such as "from sunset to sunrise" (when power generation is not possible) in which no energy is supplied in solar power generation. It is an object of the present invention to propose a power-saving power generation device that does not use a connected commercial power supply.

[0005]

SUMMARY OF THE INVENTION The present invention is an apparatus for generating electricity using natural energy such as sunlight, wind power or tidal power. This apparatus has a date and time function, sunrise and sunset. It has a calendar function that has a time function, a tide level function, and a function to determine whether to start or stop power supply to the power generator itself. This is a power generation device using natural energy, which is configured to stop power supply. Further, the present invention has a correction function of changing a set value according to a location condition of the power generation device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a general configuration of a conventionally known photovoltaic power generator. In this type of device, since the amount of power generated by the solar cell 1 changes according to the amount of solar radiation, the generated voltage of the solar cell 1 is constantly monitored by the solar cell power generation voltage monitoring device 2 so that the voltage exceeds a predetermined value. If possible, the power conversion device 3 functions to supply power to the load 4 such as a home electric appliance. At this time, depending on the state of the system load, reverse power flow (power selling) to a commercial power supply is also possible, and When the power generation voltage of the power conversion device 1 does not reach the predetermined value, the function of the power conversion device 3 stops and the power conversion device 3 enters a standby state.

[0007] It is very effective to keep such functions functioning at all times when the amount of power generation temporarily drops due to the influence of clouds during the day. However, in a power generator using natural energy, even if it is in a standby state (for example, from sunset to sunrise) in which the supply of energy necessary for power generation is small and power cannot be supplied to a load, whether or not natural energy has been supplied. It is constantly monitored, and the function of converting the power generated by natural energy into power corresponding to the load (for example, AC 60 Hz, 100 V) has a structure in which the control portion always consumes power (solar power). The device 2 for monitoring the generated voltage of the battery 2 and the control device 5 for the power conversion unit are composed of various ICs and consume power even during standby.) Reduction of CO ₂ by using natural energy The effect is reduced.

In the present invention, power supply to other than the calendar mechanism having the following functions is stopped in a time zone in which power generation by natural energy is expected to be impossible, so that power generation is performed using fossil fuel as an energy source. This eliminates the need for a commercial power supply, and is extremely effective in reducing CO ₂ . In the case of the calendar mechanism in the photovoltaic power generator 1) Date and time timer function 2) Sunrise and sunset time storage function for each date 3) At the stored sunrise time, power supply to devices other than the calendar mechanism was started and stored. A function of stopping the power supply at sunset time (this function can be operated at times before and after the stored time), and the like.

In the case of power generation using natural energy, there are time periods when power generation is impossible due to sunrise / sunset times in solar power generation and high tide / low tide time in tidal power generation, and such time periods can be predicted almost certainly in advance. In addition, wind power can be predicted to some extent depending on location and season.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically with reference to the drawings. FIG. 2 shows a configuration in which the device according to the present invention is applied to a photovoltaic power generator, in which 6 is a protective device, 7 is a power supply for the power generator, 8 is a date / time function and sunrise, A calendar mechanism having a sunset time storage function and the like, and 9 is a commercial power supply.

In the power generator according to the present invention, the power supply to the units other than the calendar function 8 is stopped during the time period in which it is expected that power generation by natural energy is impossible, and the power consumption of the device itself during that time is stopped. It will be reduced, leading to reduction of the CO ₂ because the consumption of fossil fuels by subtracting the "power of the solar power generation device" is not "power generated by solar power."

For power supply to the calendar function, a power supply device having a minimum capacity corresponding to the power consumption (a commercial power supply or a battery) may be used.

In particular, in a photovoltaic power generation device, the sunrise and sunset times differ depending on the latitude, lightness, or season of the installation location of the device. The power supply time and the power supply stop time are not appropriate. For this reason, in the present invention, a correction function is provided so that the set values of the power generation device, particularly, the set values such as “longitude, latitude”, and “year, month, day” can be changed. Such correction may be, for example, a setting based on a prefecture name or a setting based on a region in order to simplify the setting operation.

[0014]

According to the present invention, when power cannot be generated, the power consumed by the power generator itself is extremely small. Therefore, the amount of the commercial power source using fossil fuel as an energy source is small, and the CO which leads to global warming can be obtained. ₂ emissions can also be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a conventional solar power generation device.

FIG. 2 is a diagram showing a configuration of a solar power generation device according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 solar cell 2 solar cell power generation voltage device 3 power conversion device 4 load 5 power conversion control device 6 protection device 7 power supply device for power generation device 8 calendar mechanism 9 commercial power supply

Claims (2)

[Claims] An apparatus for generating electricity using natural energy such as sunlight, wind or tidal power, comprising a date and time function, a sunrise and sunset time function,
Equipped with a calendar mechanism that has a tide level function and a function to determine the start and stop of power supply to the power generator itself. Power supply to other than the calendar mechanism is stopped during times when it is expected that power generation by the natural energy is not possible. A power generation device using natural energy, which is a mechanism that works. 2. The device according to claim 1, further comprising a correction function for changing a set value of the power generation device according to a location condition of the power generation device.