JPS5968026A - Solar light electric power generating device - Google Patents

Abstract

PURPOSE:To realize invariably constant solar light electric power generation by dividing batteries in several groups which differ in arrangement direction and inclination, and detecting their output characteristics and obtaining a specific power generation output under still circuit control. CONSTITUTION:Numbers of solar batteries 1 are arranged in groups G1-Gn which vary in direction and inclination. Then, monitor solar batteries 2 are provided to the respective groups G1-Gn and their outputs are passed through resistances 3 to develope voltages across them, which are switched by a multiplexer 4 accordng to a pulse supplied from a clock pulse generator 5. Its output is inputted to a microcomputer 8 through an encoder 7 to detect the output of the respective groups. This computer 8 outputs a signal for switching the respective solar battery groups so that specific output characteristics are obtained at an output terminal 9, and the ignition signal is sent to the gate of a thyristor selected among thyristors 11 connected to the output sides of the respective groups through a decoder 10. Thus, the specific power generation output is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solar power generation device that utilizes a large number of solar cells to supply power to a load.

Solar power generation is seen as one of the important energy sources for the future of Japan, which has almost no fossil fuel resources. However, the output of solar cells depends on the incident sunlight energy. Namely the weather.

Because it depends on solar energy, which changes from moment to moment, its output inevitably fluctuates. For this reason, for example, a swing-type solar power generation device that constantly tracks the position of the sun has been considered, but even this method cannot compensate for changes in output due to changes in the weather.

In contrast, it is an object of the present invention to provide a solar power generation device that can obtain stable output for as long as possible without moving parts.

The purpose of this is that one group of solar power generation equipment consists of solar cells with almost the same light receiving conditions, and multiple groups of solar cells where the light receiving conditions differ between solar cells belonging to different groups, and the load an output terminal for supplying an output; a switching semiconductor element connected between each solar cell group and the output terminal; a means for detecting the output of the cells belonging to each solar cell group; This is achieved by comprising a control means that selects the switching element and turns it on so that a predetermined output is obtained.

Embodiments of the present invention will be described below with reference to the figures. Part 1
In the figure, a large number of solar cells 1 are divided into several groups G+,
Gt...Gn are arranged separately. The solar cells 1 belonging to one group are placed in the same direction and with the same inclination so that they have almost the same light receiving conditions. However, the directions and inclinations are changed so that the light receiving conditions are as different as possible between different groups. Therefore, the output of the solar cells belonging to each group is
It changes depending on the season, and the group that produces the greatest output is not constant.

Each group G I-G n is provided with a monitor solar cell 2, the output of which is passed through a resistor 3, and the voltage generated across the resistor is switched by a multiplexer 4 according to the pulses given by a clock pulse generator 5. The signal is converted into a digital signal via a /D converter 6, and further inputted to a microcomputer 8 via an encoder 7 to detect the output of each group. Based on the information about the power generation output of each group scanned in this way, the microcomputer 8 outputs a signal to switch each solar cell group so that the desired output characteristics are generated at the output terminal 9, and the decoder 10 An ignition signal is sent to the gate of the thyristor 11 connected to the selected group among the thyristors 11 connected to the output side of each group via the thyristor 11 connected to the output side of each group. Encoder 7 and decoder 10 are microcomputer 8
This is used because there are restrictions on the output terminals of

As described above, the present invention divides solar cells into several groups arranged in various directions and inclinations, detects their output characteristics, and obtains a predetermined power generation output through static circuit control. It is something. Since this large solar power generation device has no moving parts, it has a long life and can provide stable output, so it can be effectively applied to power supplies that require a constantly stable power source, such as unmanned telemeter terminal stations. In addition, when using a backup battery when there is no sunlight such as at night, stable charging power can be supplied, resulting in high efficiency and
High-precision charging can be performed. However, it is essentially unavoidable that the output of a solar power generation device varies depending on the season or weather, so the device according to the present invention changes the set output level depending on the season or weather, and outputs a stable output each time. The effects obtained by the present invention are extremely large, such as being able to control the supply to a load or storage battery corresponding to the level.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention. 1... Solar cell, 2... Monitor solar cell, 3... Adjustment resistor, 8... Microcomputer, 11... Thyristor. 5- T1 area

Claims (1)

[Claims] 1) One group does not consist of solar cells with almost the same light reception conditions, but there are multiple groups of solar cells in which there are differences in light reception conditions between solar cells belonging to different groups, and the output that supplies output to the load. a terminal, a switching element connected between each solar cell group and the output terminal, means for detecting the output of the batteries belonging to each solar cell group, and a predetermined output is obtained at the output terminal from the output signal of the detecting means. A solar power generation device characterized by comprising: a control means that selects the switching element and turns it on.