CN114221429A - AC power network circuit for uninterrupted power supply - Google Patents

AC power network circuit for uninterrupted power supply Download PDF

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Publication number
CN114221429A
CN114221429A CN202111401325.7A CN202111401325A CN114221429A CN 114221429 A CN114221429 A CN 114221429A CN 202111401325 A CN202111401325 A CN 202111401325A CN 114221429 A CN114221429 A CN 114221429A
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China
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module
output
voltage
resistor
terminal
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CN202111401325.7A
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CN114221429B (en
Inventor
张福阔
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Shenzhen Guowang Magoten Power Polytron Technologies Inc
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Shenzhen Guowang Magoten Power Polytron Technologies Inc
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses an AC power network circuit for uninterrupted power supply, which relates to the field of power supply and comprises: the commercial power supply module is used for supplying 220V alternating current power supply to the device through a live wire and a zero wire; the solar power supply module is used for converting solar energy into electric energy to be stored; the voltage regulation output module is used for switching on the solar power supply module after the commercial power supply module is disconnected, so that the solar power supply module supplies direct current to the sine wave output module, the square wave output module, the first voltage amplification module and the second voltage amplification module; the sine wave output module is used for converting the direct current input by the voltage regulation output module into a sine wave signal; compared with the prior art, the invention has the beneficial effects that: according to the scheme, after the mains supply is disconnected, 220V alternating-current voltage is supplied for daily use through automatic conduction of the MOS tube, power supply cannot be stopped after the mains supply is disconnected, and the novel power supply is simple in structure and high in practicability.

Description

AC power network circuit for uninterrupted power supply
Technical Field
The invention relates to the field of power supply, in particular to an alternating current power grid circuit for uninterrupted power supply.
Background
With the development of science and technology, people can not be powered, and commonly used mobile phones, computers, air conditioners, televisions and the like need to be driven by electric energy, for example, a computer is used for executing certain operations or working, sudden power failure may cause work interruption and file loss, more serious important files of a computer system may be lost, and the computer cannot be started normally.
There is corresponding generator in the existing market, but the generator often charges when power supply is normal, supplies power with the electric energy release of storage after the outage, can not effectual utilization natural energy, and directly through the solar energy power supply, the normal power consumption that satisfies the demand needs more solar panel, and the while is overcast and rainy in succession can lead to the electric energy not enough, needs the improvement.
Disclosure of Invention
The present invention is directed to an ac power grid circuit for supplying power uninterruptedly, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
an uninterruptedly powered AC mains circuit, comprising:
the commercial power supply module is used for supplying 220V alternating current power supply to the device through a live wire and a zero wire;
the solar power supply module is used for converting solar energy into electric energy to be stored;
the voltage regulation output module is used for switching on the solar power supply module after the commercial power supply module is disconnected, so that the solar power supply module supplies direct current to the sine wave output module, the square wave output module, the first voltage amplification module and the second voltage amplification module;
the sine wave output module is used for converting the direct current input by the voltage regulation output module into a sine wave signal;
the square wave output module is used for converting the sine wave signal into a square wave signal;
the first voltage amplification module is used for amplifying and outputting the high level of the square wave signal, and converting the low level of the square wave signal into the high level for amplifying and outputting;
the second voltage amplification module is used for converting the voltage amplified by the first voltage amplification module into 220V alternating current through a switching tube and a transformer;
the output end of the mains supply module is connected with the first input end of the voltage regulation output module, the output end of the solar power supply module is connected with the second input end of the voltage regulation output module, the second output end of the voltage regulation output module is connected with the power input end of the sine wave output module, the power input end of the square wave output module and the second power input end of the first voltage amplification module, the first output end of the voltage regulation output module is connected with the first power input end of the first voltage amplification module and the power input end of the second voltage amplification module, the output end of the sine wave output module is connected with the input end of the square wave output module, the output end of the square wave output module is connected with the input end of the first voltage amplification module, and the output end of the first voltage amplification module is connected with the input end of the second voltage amplification module.
As a still further scheme of the invention: the commercial power supply module comprises a live wire, a zero line, a first transformer, a fourth diode and a sixth capacitor, wherein one end of the input end of the first transformer is connected with the live wire, the other end of the input end of the first transformer is connected with the zero line, one end of the output end of the first transformer is connected with the anode of the fourth diode, the other end of the output end of the first transformer is connected with the sixth capacitor, and the other end of the sixth capacitor is connected with the cathode of the fourth diode and the first input end of the voltage regulation output module.
As a still further scheme of the invention: the solar power supply module comprises a solar panel, a first diode, a first capacitor and a battery, wherein the anode of the solar panel is connected with the anode of the first diode, the cathode of the first diode is connected with the second input end of the first capacitor, the battery and the voltage regulation output module, and the other end of the first capacitor is connected with the cathode of the battery and the cathode of the solar panel.
As a still further scheme of the invention: the voltage regulation output module comprises a fifth MOS tube, a second capacitor, a third capacitor, a voltage stabilizer, a first output voltage, a second output voltage, the S pole of the fifth MOS tube is connected with the output end of the solar power supply module, the G pole of the fifth MOS tube is connected with the output end of the mains supply module, the D pole of the fifth MOS tube is connected with the second capacitor, the input end of the voltage stabilizer, the first output voltage, the other end of the second capacitor is grounded, the grounding end of the voltage stabilizer is grounded, the output end of the voltage stabilizer is connected with the second output voltage, the third capacitor, and the other end of the third capacitor is grounded.
As a still further scheme of the invention: the sine wave output module comprises an RC frequency selection circuit and a signal amplification circuit;
the RC frequency selection circuit is used for selecting a natural frequency voltage from an interference signal generated at the moment of power supply;
the signal amplification circuit is used for circularly amplifying the inherent frequency voltage by any multiple between 1 and 1+5 percent to obtain a distorted output signal, and then outputting a sine wave signal with fixed frequency and stable amplitude through the amplitude stabilizing link;
the input end of the signal amplification circuit is connected with the output end of the RC frequency selection circuit, the power supply end of the signal amplification circuit is connected with the second output end of the voltage regulation output module, and the output end of the signal amplification circuit is connected with the input end of the square wave output module and the input end of the RC frequency selection circuit.
As a still further scheme of the invention: the RC frequency-selecting circuit comprises a fourth capacitor, a fifth capacitor, a first resistor, a second resistor and a third resistor, one end of the fourth capacitor is connected with the first resistor, the other end of the fourth capacitor is connected with the other end of the first resistor, the second resistor and the input end of the signal amplification circuit, the other end of the second resistor is connected with the fifth capacitor, the other end of the fifth capacitor is connected with the third resistor, and the other end of the third resistor is connected with the output end of the signal amplification circuit and the input end of the square wave output module.
As a still further scheme of the invention: the signal amplification circuit comprises a second amplifier, a fourth resistor, a fifth resistor, a first potentiometer, a second diode and a third diode, wherein the in-phase end of the second amplifier is connected with the input end of the RC frequency selection circuit, the inverting end of the second amplifier is connected with the first potentiometer and the fourth resistor, the other end of the first potentiometer is grounded, the other end of the fourth resistor is connected with the fifth resistor, the cathode of the second diode and the anode of the third diode, the other end of the fifth resistor is connected with the output end of the second amplifier, the anode of the second diode, the cathode of the third diode, the input end of the RC frequency selection circuit and the input end of the square wave output module, and the power supply end of the second amplifier is connected with the second input end of the voltage regulation output module.
As a still further scheme of the invention: the square wave output module comprises a third amplifier, a sixth resistor and a second potentiometer, the in-phase end of the third amplifier is connected with the input end of the signal amplification circuit, the inverting end of the third amplifier is connected with the sixth resistor and the second potentiometer, the other end of the second potentiometer is connected with the second output end of the voltage regulation output module, the other end of the sixth resistor is grounded, and the output end of the third amplifier is connected with the input end of the first voltage amplification module.
As a still further scheme of the invention: the first voltage amplification module comprises a fourth phase inverter, a fifth amplifier, a sixth amplifier, a seventh resistor, an eighth resistor, a ninth resistor and a tenth resistor, the input end of the fourth phase inverter is connected with the in-phase end of the fifth amplifier and the input end of the square wave output module, the power supply end of the fourth phase inverter is connected with the second output end of the voltage regulation output module, the output end of the fourth phase inverter is connected with the in-phase end of the sixth amplifier, the inverting end of the fifth amplifier is connected with the seventh resistor and the eighth resistor, the other end of the seventh resistor is grounded, the other end of the eighth resistor is connected with the output end of the fifth amplifier and the input end of the second voltage amplification module, the power supply end of the fifth amplifier is connected with the first output end of the voltage regulation output module, the inverting end of the sixth amplifier is connected with the ninth resistor and the tenth resistor, the other end of the tenth resistor is grounded, the other end of the ninth resistor is connected with the output end of the sixth amplifier, And the power supply end of the sixth amplifier is connected with the first input end of the voltage regulation output module.
As a still further scheme of the invention: the second voltage amplification module comprises a first MOS tube, a second MOS tube, a third MOS tube, a fourth MOS tube and a second transformer, wherein the G pole of the first MOS tube is connected with the G pole of the second MOS tube, the output end of the first voltage amplification module, the G pole of the third MOS tube is connected with the G pole of the fourth MOS tube, the output end of the first voltage amplification module, the S pole of the first MOS tube is connected with the first output end of the voltage regulation output module and the S pole of the third MOS tube, the D pole of the first MOS tube is connected with the D pole of the second MOS tube, one end of the input end of the second transformer is grounded, the other end of the input end of the second transformer is connected with the D pole of the third MOS tube and the D pole of the fourth MOS tube, and the S pole of the fourth MOS tube is grounded.
Compared with the prior art, the invention has the beneficial effects that: according to the scheme, after the mains supply is disconnected, 220V alternating-current voltage is supplied for daily use through automatic conduction of the MOS tube, power supply cannot be stopped after the mains supply is disconnected, and the novel power supply is simple in structure and high in practicability.
Drawings
Fig. 1 is a schematic diagram of an uninterruptedly supplied ac mains circuit.
Fig. 2 is a circuit diagram of an uninterruptedly supplied ac mains circuit.
Fig. 3 is a pin diagram of inverter 74LS 04.
Wherein: the solar energy power supply device comprises a 1-mains supply module, a 2-solar power supply module, a 3-voltage regulation output module, a 4-sine wave output module, a 5-square wave output module, a 6-first voltage amplification module and a 7-second voltage amplification module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, an uninterruptible power supply ac power grid circuit includes:
the commercial power supply module 1 is used for supplying 220V alternating current power supply to a device through a live wire and a zero wire;
the solar power supply module 2 is used for converting solar energy into electric energy for storage;
the voltage regulation output module 3 is used for switching on the solar power supply module 2 after the commercial power supply module 1 is disconnected, so that the solar power supply module supplies direct current to the sine wave output module 4, the square wave output module 5, the first voltage amplification module 6 and the second voltage amplification module 7;
the sine wave output module 4 is used for converting the direct current input by the voltage regulation output module 3 into a sine wave signal;
the square wave output module 5 is used for converting the sine wave signal into a square wave signal;
the first voltage amplification module 6 is used for amplifying and outputting the high level of the square wave signal, and converting the low level of the square wave signal into the high level for amplifying and outputting;
the second voltage amplification module 7 is used for converting the voltage amplified by the first voltage amplification module 6 into 220V alternating current through a switching tube and a transformer;
the output end of a mains supply module 1 is connected with a first input end of a voltage regulation output module 3, the output end of a solar power supply module 2 is connected with a second input end of the voltage regulation output module 3, the second output end of the voltage regulation output module 3 is connected with a power input end of a sine wave output module 4, the power input end of a square wave output module 5, the second power input end of a first voltage amplification module 6, the first output end of the voltage regulation output module 3 is connected with a first power input end of the first voltage amplification module 6, the power input end of a second voltage amplification module 7, the output end of the sine wave output module 4 is connected with the input end of the square wave output module 5, the output end of the square wave output module 5 is connected with the input end of the first voltage amplification module 6, and the output end of the first voltage amplification module 6 is connected with the input end of the second voltage amplification module 7.
In this embodiment: referring to fig. 2, the utility power supply module 1 includes a live line L, a neutral line N, a first transformer W1, a fourth diode D4, and a sixth capacitor C6, wherein one end of an input end of the first transformer W1 is connected to the live line L, the other end of the input end of the first transformer W1 is connected to the neutral line N, one end of an output end of the first transformer W1 is connected to an anode of the fourth diode D4, the other end of the output end of the first transformer W1 is connected to the sixth capacitor C6, and the other end of the sixth capacitor C6 is connected to a cathode of the fourth diode D4 and a first input end of the voltage regulation output module 3.
The commercial power supply normally supplies power through a live wire L and a zero wire N, reduces the voltage through a first transformer W1, and supplies power for a G pole of a fifth MOS tube V5(PMOS tube) through a fourth diode D4 and a sixth capacitor C6 for rectification and filtering.
In another embodiment: the fourth diode D4 and the sixth capacitor can be replaced by a rectifier and a filter for rectification and filtering.
In this embodiment: referring to fig. 2, the solar power supply module 2 includes a solar panel T, a first diode D1, a first capacitor C1, and a battery E1, wherein an anode of the solar panel T is connected to an anode of the first diode D1, a cathode of the first diode D1 is connected to the first capacitor C1, the battery E1, and a second input end of the voltage regulation output module 3, and another end of the first capacitor C1 is connected to a cathode of the battery E1 and a cathode of the solar panel T.
The solar panel T converts solar energy into electric energy, and outputs voltage to the battery E1 for electric energy storage.
In another embodiment: the battery E1 can be charged by wind power generation or hydroelectric power generation instead of the solar panel T.
In this embodiment: referring to fig. 2, the voltage regulation output module 3 includes a fifth MOS transistor V5, a second capacitor C2, a third capacitor C3, a regulator U1, a first output voltage VOUT1, and a second output voltage VOUT2, an S-pole of the fifth MOS transistor V5 is connected to an output terminal of the solar power supply module 2, a G-pole of the fifth MOS transistor V5 is connected to an output terminal of the utility power supply module 1, a D-pole of the fifth MOS transistor V5 is connected to a second capacitor C2, an input terminal of the regulator U1, the first output voltage VOUT1, the other end of the second capacitor C2 is grounded, a ground terminal of the regulator U1 is grounded, an output terminal of the regulator U1 is connected to the second output voltage VOUT2 and the third capacitor C3, and the other end of the third capacitor C3 is grounded.
The fifth MOS transistor V5 is a PMOS transistor, and when the live line L and the zero line N are normal, the fifth MOS transistor V5 is cut off; when the power supply of the live wire L and the zero wire N is disconnected, the fifth MOS tube V5 is conducted, the fifth MOS tube V5 is conducted to supply power to the battery E1 and supply the first output voltage VOUT1, the first output voltage VOUT1 is regulated by the voltage stabilizer U1 to output 5V voltage to supply the second output voltage VOUT2, and the first output voltage VOUT1 and the second output voltage VOUT2 supply power for the work of other modules.
In another embodiment: the model of stabiliser U1 is 7805, and the stable 5V voltage of output can select the stabilivolt to replace.
In this embodiment: referring to fig. 2, the sine wave output module 4 includes an RC frequency selection circuit and a signal amplification circuit;
the RC frequency selection circuit is used for selecting a natural frequency voltage from an interference signal generated at the moment of power supply;
the signal amplification circuit is used for circularly amplifying the inherent frequency voltage by any multiple between 1 and 1+5 percent to obtain a distorted output signal, and then outputting a sine wave signal with fixed frequency and stable amplitude through the amplitude stabilizing link;
the input end of the signal amplification circuit is connected with the output end of the RC frequency selection circuit, the power supply end of the signal amplification circuit is connected with the second output end of the voltage regulation output module 3, and the output end of the signal amplification circuit is connected with the input end of the square wave output module 5 and the input end of the RC frequency selection circuit.
The RC frequency selection circuit selects proper frequency to be amplified through the signal amplification circuit, and finally a stable sine wave signal is formed. The amplification factor is slightly larger than one (the amplification factor between 1 and 1+ 5% is all right, and the closer to 1), the voltage signal input at the same-phase end is amplified for multiple times to obtain a distorted output signal, the amplification factor between 1 and 1+ 5% is all right, and the more close to 1, the more stable the distorted output signal is generated.
In another embodiment: the sine wave output module 4 may be replaced by an LC sine wave oscillation circuit, and a sine wave signal is formed by the suction and discharge of an inductor (L) and a capacitor (C).
In this embodiment: referring to fig. 2, the RC frequency selection circuit includes a fourth capacitor C4, a fifth capacitor C5, a first resistor R1, a second resistor R2, and a third resistor R3, wherein one end of the fourth capacitor C4 is connected to the first resistor R1, the other end of the fourth capacitor C4 is connected to the other end of the first resistor R1, the second resistor R2, and an input end of the signal amplification circuit, the other end of the second resistor R2 is connected to the fifth capacitor C5, the other end of the fifth capacitor C5 is connected to the third resistor R3, and the other end of the third resistor R3 is connected to an output end of the signal amplification circuit and an input end of the square wave output module 5.
At the moment of supplying direct current power, interference signals with rich frequency are connected in series into the RC frequency selection circuit, and appear at the output end of the circuit after amplification (the signal amplification circuit), but the interference signals are not required signals due to small amplitude and complex frequency, frequency screening is carried out through the RC frequency selection circuit, and the selected signal frequency can be changed through the fifth capacitor C5 and the fourth capacitor C4(C4 and C5 are adjustable capacitors).
In another embodiment: the size of the resistor can be changed to replace the adjustable capacitors C4 and C5, and the absorption and discharge speed of the capacitor can be changed by changing the size of the resistor.
In this embodiment: referring to fig. 2, the signal amplifying circuit includes a second amplifier U2, a fourth resistor R4, a fifth resistor R5, a first potentiometer RP1, a second diode D2, and a third diode D3, the non-inverting terminal of the second amplifier U2 is connected to the input terminal of the RC frequency-selecting circuit, the inverting terminal of the second amplifier U2 is connected to the first potentiometer RP1 and the fourth resistor R4, the other terminal of the first potentiometer RP1 is grounded, the other terminal of the fourth resistor R4 is connected to the fifth resistor R5, the cathode D2 of the second diode, and the anode D3 of the third diode, the other terminal of the fifth resistor R5 is connected to the output terminal of the second amplifier U2, the anode of the second diode D2, the cathode of the third diode D3, the input terminal of the RC frequency-selecting circuit, and the input terminal of the square wave output module 5, and the power terminal of the second amplifier U2 is connected to the second input terminal of the voltage-adjusting output module 3.
The second amplifier U2 amplifies the voltage signal input by the non-inverting terminal through the first potentiometer RP1, the fourth resistor R4 and the fifth resistor R5, the amplification factor is slightly larger than one (1 to 1+ 5%), the voltage signal input by the non-inverting terminal is amplified for multiple times to obtain a distorted output signal, finally a sine wave signal with fixed frequency and stable amplitude can be output through the amplitude stabilizing link, the output voltage amplitude is limited through the voltage stabilizing characteristic of the second diode D2 and the third diode D3, the output waveform is improved, and distortion is avoided.
In another embodiment, a transistor with a smaller amplification factor may be used instead of the second amplifier U2.
In this embodiment: referring to fig. 2, the square wave output module 5 includes a third amplifier U3, a sixth resistor R6, and a second potentiometer RP2, wherein the non-inverting terminal of the third amplifier U3 is connected to the output terminal of the signal amplifying circuit, the inverting terminal of the third amplifier U3 is connected to the sixth resistor R6 and the second potentiometer RP2, the other terminal of the second potentiometer RP2 is connected to the second output terminal of the voltage adjusting output module 3, the other terminal of the sixth resistor R6 is grounded, and the output terminal of the third amplifier U3 is connected to the input terminal of the first voltage amplifying module 6.
The input sine wave voltage is less than the voltage of the inverting terminal of the third amplifier U3, and the third amplifier U3 outputs low level; when the input sine wave voltage is greater than the voltage at the inverting terminal of the third amplifier U3, the third amplifier outputs a voltage VOUT2, thereby forming a square wave signal.
In another embodiment, the amplifier model has multiple choices, which can be AD8606, KA347, LM124, etc.
In this embodiment: referring to fig. 2 and 3, the first voltage amplifying module 6 includes a fourth inverter U4, a fifth amplifier U5, a sixth amplifier U6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10, an input terminal of the fourth inverter U4 is connected to a non-inverting terminal of the fifth amplifier U5 and an output terminal of the square wave output module 5, a power terminal of the fourth inverter U4 is connected to a second output terminal of the voltage regulation output module 3, an output terminal of the fourth inverter U4 is connected to a non-inverting terminal of the sixth amplifier U6, an inverting terminal of the fifth amplifier U5 is connected to the seventh resistor R7 and the eighth resistor R8, another terminal of the seventh resistor R7 is grounded, another terminal of the eighth resistor R8 is connected to an output terminal of the fifth amplifier U5 and an input terminal of the second voltage amplifying module 7, a power terminal of the fifth amplifier U5 is connected to a first output terminal of the voltage regulation output module 3, and an inverting terminal of the sixth amplifier U6 6 is connected to a ninth resistor R9 of the sixth amplifier U9, The other end of the tenth resistor R10 and the other end of the tenth resistor R10 are grounded, the other end of the ninth resistor R9 is connected to the output end of the sixth amplifier U6 and the input end of the second voltage amplification module, and the power supply end of the sixth amplifier U6 is connected to the first output end of the voltage regulation output module 3.
The model of the fourth inverter U4 is 74LS04, the inverter inverts the phase of the input signal by 180 degrees, in the scheme, the high level is converted into the low level, and the low level is converted into the high level; the fifth amplifier U5 is used for amplifying the input sine wave signal, the low level is unchanged, the high level amplification factor is (R7+ R8)/R7, the fourth inverter U4 converts the high level into the low level, and the low level into the high level, and when the square wave signal is amplified by the sixth amplifier U6 (the amplification principle is the same as that of the fifth amplifier U5), so that the square wave output by the fifth amplifier U5 is at the high level, the sixth amplifier U6 outputs the square wave as the low level; when the square wave output from the fifth amplifier U5 is low, the square wave output from the sixth amplifier U6 is high.
In another embodiment: the fifth amplifier U5 and the sixth amplifier U6 may be replaced by transistors for signal amplification.
In this embodiment: referring to fig. 2, the second voltage amplifying module 7 includes a first MOS transistor V1, a second MOS transistor V2, a third MOS transistor V3, a fourth MOS transistor V4, and a second transformer W2, a G electrode of the first MOS transistor V1 is connected to a G electrode of the second MOS transistor V2 and an output end of the first voltage amplifying module 6, a G electrode of the third MOS transistor V3 is connected to a G electrode of the fourth MOS transistor V4 and an output end of the first voltage amplifying module 6, an S electrode of the first MOS transistor V1 is connected to a first output end of the voltage regulating output module 3 and an S electrode of the third MOS transistor V3, a D electrode of the first MOS transistor V1 is connected to a D electrode of the second MOS transistor V2 and an input end of the second transformer W2, an S electrode of the second MOS transistor V2 is grounded, and another end of the second transformer W2 is connected to a D electrode of the third MOS transistor V3, a D electrode of the fourth MOS transistor V4, and an S electrode of the fourth transformer W4 is grounded.
The first MOS transistor V1 and the third MOS transistor V3 are PMOS transistors, and the second MOS transistor V2 and the fourth MOS transistor V4 are NMOS transistors; when the fifth amplifier U5 outputs a high level and the sixth amplifier U6 outputs a low level, the second MOS transistor V2 and the third MOS transistor V3 are switched on, the first MOS transistor V1 and the fourth MOS transistor V4 are switched off, and the current direction of the second transformer W2 is from bottom to top; when the fifth amplifier U5 outputs a low level and the sixth amplifier U6 outputs a high level, the second MOS transistor V2 and the third MOS transistor V3 are cut off, the first MOS transistor V1 and the fourth MOS transistor V4 are connected, and the current direction of the second transformer W2 is from top to bottom; the input square wave signal is changed in a reciprocating mode to form alternating current, the alternating current is amplified by the second transformer W2 to output 220V alternating current, and power is supplied when the mains supply is powered off.
In another embodiment, the PMOS transistor and the NMOS transistor can be replaced by corresponding PNP transistor and NPN transistor.
The working principle of the invention is as follows: under normal conditions, the mains supply module 1 supplies 220V alternating current to work and use for each electric appliance, when the mains supply module 1 is disconnected, the voltage regulation module is conducted with a fifth MOS transistor V5 of a switch of the solar supply module, the solar supply module which converts solar energy into electric energy supplies power for the voltage regulation module, the voltage regulation module adjusts output voltage to supply power for the work of other modules, the sine wave output module 4 obtains electricity to output sine wave signals, the square wave signals are output through the square wave output module 5, the square wave signals are amplified in signal intensity through the first voltage amplification module 6, the amplified square wave signals form alternating current through four MOS transistors of the second voltage amplification module 7, and the voltage signals are amplified through the second transformer W2 to output 220V alternating current to supply to each electric appliance. Through the switch that fifth MOS pipe V5 was as the circuit, become to switch on by cutting off at once after commercial power supply module 1 breaks off, make solar energy power module 2 power supply, simple structure, convenient and practical.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. An AC power grid circuit for uninterrupted power supply, comprising:
this uninterrupted power supply's alternating current power grid circuit includes:
the commercial power supply module is used for supplying 220V alternating current power supply to the device through a live wire and a zero wire;
the solar power supply module is used for converting solar energy into electric energy to be stored;
the voltage regulation output module is used for switching on the solar power supply module after the commercial power supply module is disconnected, so that the solar power supply module supplies direct current to the sine wave output module, the square wave output module, the first voltage amplification module and the second voltage amplification module;
the sine wave output module is used for converting the direct current input by the voltage regulation output module into a sine wave signal;
the square wave output module is used for converting the sine wave signal into a square wave signal;
the first voltage amplification module is used for amplifying and outputting the high level of the square wave signal, and converting the low level of the square wave signal into the high level for amplifying and outputting;
the second voltage amplification module is used for converting the voltage amplified by the first voltage amplification module into 220V alternating current through a switching tube and a transformer;
the output end of the mains supply module is connected with the first input end of the voltage regulation output module, the output end of the solar power supply module is connected with the second input end of the voltage regulation output module, the second output end of the voltage regulation output module is connected with the power input end of the sine wave output module, the power input end of the square wave output module and the second power input end of the first voltage amplification module, the first output end of the voltage regulation output module is connected with the first power input end of the first voltage amplification module and the power input end of the second voltage amplification module, the output end of the sine wave output module is connected with the input end of the square wave output module, the output end of the square wave output module is connected with the input end of the first voltage amplification module, and the output end of the first voltage amplification module is connected with the input end of the second voltage amplification module.
2. The uninterruptedly powered ac power grid circuit of claim 1, wherein the commercial power module includes a live wire, a neutral wire, a first transformer, a fourth diode, and a sixth capacitor, one end of an input terminal of the first transformer is connected to the live wire, the other end of the input terminal of the first transformer is connected to the neutral wire, one end of an output terminal of the first transformer is connected to an anode of the fourth diode, the other end of the output terminal of the first transformer is connected to the sixth capacitor, and the other end of the sixth capacitor is connected to a cathode of the fourth diode and the first input terminal of the voltage regulation output module.
3. The uninterruptible power supply AC power grid circuit according to claim 1, wherein the solar power module comprises a solar panel, a first diode, a first capacitor, and a battery, wherein a positive electrode of the solar panel is connected to a positive electrode of the first diode, a negative electrode of the first diode is connected to the first capacitor, the battery, and the second input terminal of the voltage regulation output module, and another end of the first capacitor is connected to a negative electrode of the battery and a negative electrode of the solar panel.
4. The uninterruptedly powered ac power grid circuit according to claim 1, wherein the voltage regulation output module includes a fifth MOS transistor, a second capacitor, a third capacitor, a regulator, a first output voltage, and a second output voltage, an S-pole of the fifth MOS transistor is connected to an output terminal of the solar power supply module, a G-pole of the fifth MOS transistor is connected to an output terminal of the utility power supply module, a D-pole of the fifth MOS transistor is connected to the second capacitor, an input terminal of the regulator, and the first output voltage, and the other end of the second capacitor is grounded, a ground terminal of the regulator is grounded, the output terminal of the regulator is connected to the second output voltage, the third capacitor, and the other end of the third capacitor is grounded.
5. The uninterruptedly powered ac power grid circuit of claim 1, wherein the sine wave output module comprises an RC frequency selection circuit and a signal amplification circuit;
the RC frequency selection circuit is used for selecting a natural frequency voltage from an interference signal generated at the moment of power supply;
the signal amplification circuit is used for circularly amplifying the inherent frequency voltage by any multiple between 1 and 1+5 percent to obtain a distorted output signal, and then outputting a sine wave signal with fixed frequency and stable amplitude through the amplitude stabilizing link;
the input end of the signal amplification circuit is connected with the output end of the RC frequency selection circuit, the power supply end of the signal amplification circuit is connected with the second output end of the voltage regulation output module, and the output end of the signal amplification circuit is connected with the input end of the square wave output module and the input end of the RC frequency selection circuit.
6. The uninterruptedly powered ac power grid circuit of claim 5, wherein the RC frequency selective circuit comprises a fourth capacitor, a fifth capacitor, a first resistor, a second resistor, and a third resistor, one end of the fourth capacitor is connected to the first resistor, the other end of the fourth capacitor is connected to the other end of the first resistor, the second resistor, and the input end of the signal amplification circuit, the other end of the second resistor is connected to the fifth capacitor, the other end of the fifth capacitor is connected to the third resistor, and the other end of the third resistor is connected to the output end of the signal amplification circuit and the input end of the square wave output module.
7. The uninterruptedly powered ac power grid circuit of claim 5, wherein the signal amplifying circuit comprises a second amplifier, a fourth resistor, a fifth resistor, a first potentiometer, a second diode, and a third diode, wherein a non-inverting terminal of the second amplifier is connected to an input terminal of the RC frequency-selecting circuit, an inverting terminal of the second amplifier is connected to the first potentiometer and the fourth resistor, another terminal of the first potentiometer is grounded, another terminal of the fourth resistor is connected to the fifth resistor, a cathode of the second diode, and an anode of the third diode, another terminal of the fifth resistor is connected to an output terminal of the second amplifier, an anode of the second diode, a cathode of the third diode, an input terminal of the RC frequency-selecting circuit, and an input terminal of the square wave output module, and a power source terminal of the second amplifier is connected to a second input terminal of the voltage regulating output module.
8. The uninterruptedly powered ac power grid circuit of claim 7, wherein the square wave output module comprises a third amplifier, a sixth resistor, and a second potentiometer, wherein a non-inverting terminal of the third amplifier is connected to the input terminal of the signal amplifying circuit, an inverting terminal of the third amplifier is connected to the sixth resistor and the second potentiometer, another terminal of the second potentiometer is connected to the second output terminal of the voltage regulating output module, another terminal of the sixth resistor is grounded, and an output terminal of the third amplifier is connected to the input terminal of the first voltage amplifying module.
9. The uninterruptedly powered AC power grid circuit of claim 1, wherein the first voltage amplifying module comprises a fourth inverter, a fifth amplifier, a sixth amplifier, a seventh resistor, an eighth resistor, a ninth resistor, and a tenth resistor, an input terminal of the fourth inverter is connected to a non-inverting terminal of the fifth amplifier and an input terminal of the square wave output module, a power terminal of the fourth inverter is connected to the second output terminal of the voltage regulation output module, an output terminal of the fourth inverter is connected to the non-inverting terminal of the sixth amplifier, an inverting terminal of the fifth amplifier is connected to the seventh resistor and the eighth resistor, another terminal of the seventh resistor is grounded, another terminal of the eighth resistor is connected to the output terminal of the fifth amplifier and the input terminal of the second voltage amplifying module, a power terminal of the fifth amplifier is connected to the first output terminal of the voltage regulation output module, and an inverting terminal of the sixth amplifier is connected to the ninth resistor, The other end of the tenth resistor is grounded, the other end of the ninth resistor is connected with the output end of the sixth amplifier and the input end of the second voltage amplification module, and the power supply end of the sixth amplifier is connected with the first input end of the voltage regulation output module.
10. The ac electrical network circuit of claim 1, wherein the second voltage amplifying module comprises a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, and a second transformer, wherein a G pole of the first MOS transistor is connected to a G pole of the second MOS transistor and an output end of the first voltage amplifying module, a G pole of the third MOS transistor is connected to a G pole of the fourth MOS transistor and an output end of the first voltage amplifying module, an S pole of the first MOS transistor is connected to a first output end of the voltage regulating output module and an S pole of the third MOS transistor, a D pole of the first MOS transistor is connected to a D pole of the second MOS transistor and one end of an input end of the second transformer, an S pole of the second MOS transistor is grounded, and the other end of the input end of the second transformer is connected to a D pole of the third MOS transistor and a D pole of the fourth MOS transistor, and an S pole of the fourth MOS transistor is grounded.
CN202111401325.7A 2021-11-19 2021-11-19 Uninterrupted power supply alternating current power grid circuit Active CN114221429B (en)

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CN112865281A (en) * 2021-01-15 2021-05-28 赣州市正途科技有限公司 Solar power generation and voltage boosting daily-use electrical appliance working circuit
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WO2019128185A1 (en) * 2017-12-28 2019-07-04 深圳Tcl新技术有限公司 Resonant power supply and electronic device
CN112865281A (en) * 2021-01-15 2021-05-28 赣州市正途科技有限公司 Solar power generation and voltage boosting daily-use electrical appliance working circuit
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