CN204886843U - A photovoltaic power generation system - Google Patents

Abstract

The utility model discloses a photovoltaic power generation system, including solar panel T, diode D1, chip IC1 and MOS pipe Q1, diode D1's positive pole is connected to solar panel T's one end, and diode D2's positive pole, electric capacity C1, transformer W's winding N3, transformer W's winding N1 and battery E's positive pole, diode D2's negative pole connecting resistance R1 and resistance R2 are connected to diode D1's negative pole. The utility model discloses photovoltaic power generation system utilizes switching on of two modes of CD4047 oscillator chip control, and then has realized the dc -to -ac converter function for the circuit has the function of output direct current and interchange simultaneously, and set up undulant suppression component in the circuit, can reduce the light intensity to output voltage's influence, thus have that the function is various, the advantage of convenient to use and stable performance.

Description

A photovoltaic power generation system

technical field

The utility model relates to the field of automatic control, in particular to a photovoltaic power generation system.

Background technique

Energy is the cornerstone of the existence and development of modern society. With the continuous development of the global economy and society, energy consumption also continues to grow accordingly, and the scarcity of fossil energy is becoming more and more prominent, and this scarcity is gradually reflected in the price of energy commodities. In the context of the increasingly tense supply of fossil energy, the large-scale development and utilization of renewable energy has become an important part of the future energy strategy of various countries. Solar energy is an inexhaustible renewable energy source, with potential economic benefits such as sufficient cleanliness, absolute safety, relative extensiveness, long life, maintenance-free, and resource adequacy. Advantages, play an important role in the future long-term energy strategy. As a new type of green energy, solar energy has broad prospects for development. Solar power generation has become an important way to solve the global energy crisis with the most unique advantages in the future. However, due to the shortcomings of solar energy itself, the utilization rate of solar energy is generally low now, and most of the current solar power generation devices output DC power, while most household appliances use AC power supply, and an external D/A converter is required to supply electrical equipment. , increasing the cost of use, and the voltage emitted by solar energy is affected by the intensity of light and changes, so the output voltage stability of ordinary photovoltaic power generation systems is poor.

Contents of the invention

The purpose of this utility model is to provide a photovoltaic power generation system with various functions and stable performance, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A photovoltaic power generation system, including a solar panel T, a diode D1, a chip IC1 and a MOS transistor Q1, one end of the solar panel T is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the anode of the diode D2, the capacitor C1, and the transformer W The winding N3, the winding N1 of the transformer W and the anode of the battery E, the cathode of the diode D2 are connected to the resistor R1 and the resistor R2, the other end of the resistor R2 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the output DC voltage U1, and the resistor R1 The other end of the chip is connected to pin 4 of chip IC1, pin 5 of chip IC1, pin 6 of chip IC1 and pin 14 of chip IC1, and pin 2 of chip IC1 is connected to a fixed end of potentiometer RP1 and potentiometer RP1 The sliding end of the chip IC1, the pin 3 of the chip IC1 is connected to the capacitor C2 and the other fixed end of the potentiometer RP1, the pin 1 of the chip IC1 is connected to the other end of the capacitor C2, the negative pole of the battery E is connected to the other end of the capacitor C1, and the solar panel T The other end of the MOS tube Q1, the source of the MOS tube Q2, the pin 7 of the chip IC1, the pin 8 of the chip IC1, the pin 9 of the chip IC1 and the pin 12 of the chip IC1, the pin of the chip IC1 Pin 10 is connected to the gate of the MOS transistor Q1, pin 11 of the chip IC1 is connected to the gate of the MOS transistor Q2, the drain of the MOS transistor Q1 is connected to the other end of the winding N3 of the transformer W, and the drain of the MOS transistor Q2 is connected to the transformer W. The other end of the winding N1, one end of the winding N2 of the transformer W is connected to the transient voltage suppression diode DW and the output AC voltage U2, and the other end of the winding N2 of the transformer W is connected to the other end of the transient voltage suppression diode DW and the output AC voltage U2 On the other end, the model of the chip IC1 is CD4047.

As a further solution of the utility model: the solar panel T is a monocrystalline silicon solar panel.

Compared with the prior art, the beneficial effect of the utility model is: the photovoltaic power generation system of the utility model uses the CD4047 oscillator chip to control the conduction of the two modes, and then realizes the function of the inverter, so that the circuit can simultaneously output DC and AC The function, and the fluctuation suppression element is set in the circuit, which can reduce the influence of light intensity on the output voltage, so it has the advantages of multiple functions, convenient use and stable performance.

Description of drawings

Figure 1 is a circuit diagram of a photovoltaic power generation system.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1, a photovoltaic power generation system, including a solar panel T, a diode D1, a chip IC1 and a MOS transistor Q1, one end of the solar panel T is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the anode of the diode D2, capacitor C1, winding N3 of transformer W, winding N1 of transformer W and the positive pole of battery E, the cathode of diode D2 is connected to resistor R1 and resistor R2, the other end of resistor R2 is connected to the anode of diode D3, and the cathode of diode D3 is connected to output DC Voltage U1, the other end of resistor R1 is connected to pin 4 of chip IC1, pin 5 of chip IC1, pin 6 of chip IC1 and pin 14 of chip IC1, pin 2 of chip IC1 is connected to a fixed potentiometer RP1 end and the sliding end of the potentiometer RP1, the pin 3 of the chip IC1 is connected to the capacitor C2 and the other fixed end of the potentiometer RP1, the pin 1 of the chip IC1 is connected to the other end of the capacitor C2, and the negative pole of the battery E is connected to the other end of the capacitor C1 One end, the other end of solar panel T, the source of MOS transistor Q1, the source of MOS transistor Q2, pin 7 of chip IC1, pin 8 of chip IC1, pin 9 of chip IC1 and pin 12 of chip IC1 , the pin 10 of the chip IC1 is connected to the gate of the MOS transistor Q1, the pin 11 of the chip IC1 is connected to the gate of the MOS transistor Q2, the drain of the MOS transistor Q1 is connected to the other end of the winding N3 of the transformer W, and the drain of the MOS transistor Q2 The pole is connected to the other end of the winding N1 of the transformer W, one end of the winding N2 of the transformer W is connected to the transient voltage suppression diode DW and the output AC voltage U2, and the other end of the winding N2 of the transformer W is connected to the other end of the transient voltage suppression diode DW and The other end of the output AC voltage U2, the model of the chip IC1 is CD4047.

The solar panel T is a monocrystalline silicon solar panel.

The working principle of the utility model is: when the sun is sufficient during the day, the solar panel T completes the photoelectric conversion and supplies power to the converted electric energy through the diode D1, and charges the storage battery E all the way for use at night or in rainy weather. When it is fully charged, its voltage is the same as the voltage of the solar panel, and it will stop charging, and output DC voltage U1 at the same time, and the other way supplies power to the inverter circuit composed of chip IC1, MOS tube Q1 and other components. Chip IC1 is a low-power consumption CMOS astable/monostable multivibrator. It is connected to produce a 0.01S180 degree signal, two pulse trains on pins 10 and 11 of IC1 as an astable multivibrator. Pin 10 is connected to the gate of Q1 and pin 11 is connected to the gate of Q2. When the 10th pin is at a high level, the MOS transistor Q1 is triggered to conduct, and the current passes through the upper part of the transformer and outputs the positive half of the AC voltage to the winding N3 of the transformer, and the AC voltage outputs the positive half cycle. When pin 11 is at a high level, it enters the second stage, the current passes through the primary winding N1 of the transformer in the opposite direction, and its output AC voltage is in the negative half cycle, and the transient voltage suppression diode DW can effectively clamp the output voltage caused by the light intensity. fluctuation. Increase the stability of the home circuit.

Claims (2)

1. A photovoltaic power generation system, comprising a solar panel T, a diode D1, a chip IC1 and a MOS transistor Q1, wherein one end of the solar panel T is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the anode of the diode D2, Capacitor C1, winding N3 of transformer W, winding N1 of transformer W and the positive pole of battery E, the cathode of diode D2 is connected to resistor R1 and resistor R2, the other end of resistor R2 is connected to the anode of diode D3, and the cathode of diode D3 is connected to the output DC voltage U1, the other end of resistor R1 is connected to pin 4 of chip IC1, pin 5 of chip IC1, pin 6 of chip IC1 and pin 14 of chip IC1, pin 2 of chip IC1 is connected to one of potentiometer RP1 The fixed end and the sliding end of the potentiometer RP1, the pin 3 of the chip IC1 is connected to the capacitor C2 and the other fixed end of the potentiometer RP1, the pin 1 of the chip IC1 is connected to the other end of the capacitor C2, and the negative pole of the battery E is connected to the capacitor C1 The other end, the other end of the solar panel T, the source of the MOS transistor Q1, the source of the MOS transistor Q2, the pin 7 of the chip IC1, the pin 8 of the chip IC1, the pin 9 of the chip IC1 and the pin of the chip IC1 12. The pin 10 of the chip IC1 is connected to the gate of the MOS transistor Q1, the pin 11 of the chip IC1 is connected to the gate of the MOS transistor Q2, the drain of the MOS transistor Q1 is connected to the other end of the winding N3 of the transformer W, and the MOS transistor Q2 The drain is connected to the other end of the winding N1 of the transformer W, one end of the winding N2 of the transformer W is connected to the transient voltage suppression diode DW and the output AC voltage U2, and the other end of the winding N2 of the transformer W is connected to the other end of the transient voltage suppression diode DW And the other end of the output AC voltage U2, the model of the chip IC1 is CD4047. 2. A photovoltaic power generation system according to claim 1, characterized in that the solar panel T is a monocrystalline silicon solar panel.