JPS58133121A - Solar power generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This research relates to a modified JILJIC solar power generation device, which is used in artificial satellites and obtains electrical energy rather than optical energy.

TECHNICAL BACKGROUND OF THE INVENTION FIG. 1 is a circuit diagram of a conventional saw 2 power generator. In FIG. 1, parallel-connected solar cell element groups 2 are connected in series to constitute solar cell circuits 21 to 2d, and the power generated in each solar cell circuit 2 to 2d is fm, and the power generated by king diodes 11 to 1d is are connected to the pass line L and supplied to the load 1 through each of them.

If a short circuit occurs in any of the solar cell circuits 2a to 2d, the rust generated in the other solar cell circuits will pass through the path line L to the solar cell circuit where the short circuit occurred. This is to prevent it from flowing into the battery circuit. The voltage V of the current line L changes due to changes in the power generated by the solar cell circuits 21 to 2d and changes in the load 3.

In order to keep the voltage supplied to this load constant, load J
The voltage v#i is compared with the reference voltage V by the error voltage detector 4,
After being amplified, shunt circuits 1m to 5@e (respectively diode groups 61 to 6) control the generated power of the solar cell circuit.
added through c. These diodes IIIF6
Since the number of series-connected m-1@tri diodes is different, when the error voltage from the error voltage detector 4 is low, the shunt circuit sa is driven through the diode drum, and the power generated by the solar cell circuit 2a is controlled. .

When the 1 difference 1 voltage becomes even larger, the - difference voltage is also supplied to the shunt circuits 5b, 5. through the diodes 6b, me, and the solar cell circuit 2b.

The generated power of 2C is controlled so that the voltage i supplied to the load 3 approaches the voltage i supplied to the load 3.

2 is a diagram for explaining the operation of the solar cell circuit 2 in detail, and FIG. 3 is a characteristic diagram for explaining the operation. In FIGS. 2 and 3, when the error voltage and voltage V from the error voltage detector 4 increase, the electric currents fi and Iu flowing to the upper part of the solar cell circuit decrease, and the current flowing into the transistor of the shunt circuit {circle around (2)}・will increase. 1 When the turtle pressure difference (■) reaches ■1, the ability to control the voltage is lost (l), and V>Vt, V, + vL begins to decrease rapidly. For this reason f
The forward bias voltage vDFi applied to c + blocking diode 1a becomes small, and finally becomes the reverse bias voltage. be separated.

In this state, the solar cell circuit 2b controls the voltage supplied to the load J instead of the solar cell circuit 2-, but its operation is the same as that of the solar cell circuit 2a. When the error voltage V further increases, the voltage control function is sequentially transferred to the solar cell circuit 2C.

Problems with the Background Art In the conventional solar power generation device as described above, when the power generated by the solar cell generation circuits 21 to 2d is large and the power consumed by the load is small, that is, when there is a large amount of surplus generated power, In this case, all solar cell circuits must be equipped with shunt circuits to control the generated power, which results in an increase in the number of circuit components.

OBJECTS OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and provides a saw 2 power generation device that can efficiently stabilize the heavy pressure at the load end with a small number of shunt circuits. The purpose is to

Summary of the Invention This invention provides a shunt circuit for a limited solar-pond circuit by configuring a plurality of solar cell circuits configured by connecting solar cell elements in series and parallel to supply generated power to a load. The error voltage between the voltage at the load end and the reference voltage is detected by an error voltage detector, the shunt circuit is made conductive according to this error voltage, and the surplus tS of the solar cell circuit is shunted through the diode (b). If you pour it into the street, it will be 1M in 4! By connecting the shunt circuit through a resistor and consuming the surplus power of the solar cell circuit, a single shunt circuit controls the power generated by the solar cell circuit and the power consumption at the load end. It is.

Embodiments of the Invention Hereinafter, embodiments of the solar power generation device of the present invention will be described based on the drawings. FIG. 4 is a circuit diagram showing the configuration of one embodiment. In FIG. 4, the same parts as in FIG. 1 will be described with the same reference numerals. In order to simplify the explanation, FIG. 4 shows only nine solar cell circuits 2a in which solar cell elements 2 are connected in series and parallel.

What is the power generated by this solar cell circuit 2a? It is supplied to the load 1 from the paddle line L via the locking diode 1-. Further, the voltage V of the negative iR1 is applied to one input terminal of the error voltage detector 4, and the reference voltage ■ is applied to the other input terminal of the error voltage detector 4. ing. This voltage V is compared with the reference voltage V*tj by a difference voltage detection I14, and the error voltage resulting from the comparison is amplified there and then supplied to the shunt circuit 5 via the diode Ca.

Shunt circuit 5 a ij) Rannosume Q1, resistor R
The cathode of the diode Ca is connected to the transistor IQ via the resistor R1.

, and the pace of transistor Qa is grounded through a resistor Rat tube. Furthermore, the terminals of the transistor Q are grounded via a resistor Ram.

Although the configuration up to this point is similar to that of FIG. 1, the embodiment shown in FIG. 4 differs from FIG. 1 in the following points. That is, shunt circuit 5- and path 2425
In other words, the pass line L and the transistor Q are connected to each other. Furthermore, a diode 1 is connected between the collectors of a predetermined parallel-connected solar cell element group 2 and a transistor Q in one solar cell circuit 2a.

Next, the operation of the solar power generation device of the present invention configured as described above will be explained. A large amount of power generated in the solar cell circuit 2a is applied to the load 3 through the Plockinda diode 11 and the pass line L. The voltage of the pass line L changes due to changes in the voltage generated by the solar cell circuit 2a and changes in the load 3.

The voltage V of this pass line L (that is, the voltage V of load 1
) is compared with the reference voltage V in the error voltage detector 4, and the error voltage is amplified there and then applied to the shunt circuit J1 through the diode 6-. For this,
When the F transistor Q in the shunt circuit ja is on, C1
) Excess current flows from the collector IK solar cell circuit 2a of transistor Q through the diode 1, and the solar cell circuit 2
10 Controls the generated power.

Next, the resistor 1, which is a characteristic of this invention, is connected to the pass line L and the transistor Q of the shunt circuit 5a.

Since the transistor is connected between the collectors of
When , is turned on, current flows from the pass line L, and surplus power of the power generated in the solar cell circuit 2a is also consumed in the resistor r, contributing to stabilizing the voltage of the pass line L.

That is, the generated power is controlled through the diode 8, and the power consumption is controlled through the resistor 1, and the results are multiplied. Moreover, the power consumption control by the resistor 1 is different from the conventional circuit even after the control of the power generated by the solar cell circuit 21 through the diode 8 is completed, and the power consumption control by the resistor 1 continues until the transistor Q of the shunt circuit 5 is saturated. Power consumption control tube can be done.

In addition, although only the solar cell circuit 2a is shown in FIG. 4, several solar cell circuits having the solar cell circuit 1ltlWl- configuration are provided, and therefore, the solar cell circuit 2a for the Towara circuit is Needless to say, the same operation as 2a is performed.

Effects of the Invention As described above, the solar power generation device of the present invention supplies generated power to a load from a plurality of solar cell circuits configured by connecting solar cell elements in parallel, and The voltage is compared with the reference voltage, the resulting error voltage is detected by the furnace differential pressure detector, the shunt circuit is made conductive according to this error, and the excess current from the solar cell circuit is passed through the diode to the shunt circuit, and the resistor This allows the power generated by the solar cell circuit and the power consumed at the load end to be controlled simultaneously by a single shunt circuit, thereby increasing the control capability. The voltage can be highly stabilized with a simple circuit configuration.

[Brief explanation of drawings]

Figure 1 is a circuit diagram of a conventional solar power generation device, and Figure 2 shows only one solar cell circuit and its corresponding circuit to explain the operating system of the solar power generation device in Figure 1. FIG. 3 is a characteristic diagram for explaining the operation of the solar power generation device of FIG. 1, and FIG. 4 is a diagram showing the configuration of an embodiment of the solar power generation device of the present invention. It is a circuit diagram. 1 field...! Locking diode, 2... Parallel connected solar cell element group, ja... Solar cell circuit, 3.
... Load, 4... Error voltage detector, ja... Shunt circuit, 6a, l... Diode, 1. R1-R1・
...Resistance, Q, transistor. Applicant's agent Patent attorney Takehiko Suzue Figure 2 Figure 3

Claims (1)

[Claims] Consisting of solar cell elements connected in series and parallel to each other @VC%
a plurality of solar cell circuits that supply raw power; an error voltage detector that compares the voltage of the load with a reference voltage and voltage and detects the error voltage; a shunt circuit that controls the power generated by the circuit and the power consumption at the load end; a diode that is connected to the shunt circuit and the solar cell circuit quantity yc and causes the excess current of the solar cell circuit to flow into the solar cell circuit 71; A solar power generation device comprising a resistor that is provided between the solar end and the shunt circuit and consumes surplus power of the power generated in the solar '11La circuit.