CN114221429B - Uninterrupted power supply alternating current power grid circuit - Google Patents

Uninterrupted power supply alternating current power grid circuit Download PDF

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Publication number
CN114221429B
CN114221429B CN202111401325.7A CN202111401325A CN114221429B CN 114221429 B CN114221429 B CN 114221429B CN 202111401325 A CN202111401325 A CN 202111401325A CN 114221429 B CN114221429 B CN 114221429B
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China
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module
voltage
output
resistor
power supply
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CN114221429A (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 uninterrupted power supply alternating current power grid circuit, which relates to the field of power supply and comprises: the mains supply module is used for supplying 220V alternating current power supply through a live wire and a zero wire; the solar power supply module is used for converting solar energy into electric energy for storage; the voltage regulation output module is used for switching on the solar power supply module after the mains supply module is disconnected so as to supply 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 the MOS tube in an automatic conduction mode, the fact that the power supply is not stopped after the mains supply is disconnected is guaranteed, and the power supply is simple in structure and high in practicality.

Description

Uninterrupted power supply alternating current power grid circuit
Technical Field
The invention relates to the field of power supply, in particular to an uninterrupted power supply alternating current power grid circuit.
Background
With the development of science and technology, people are increasingly not powered on, and common mobile phones, computers, air conditioners, televisions and the like all need electric energy to drive, for example, the computers are used for executing certain operations or working, and unexpected power failure can lead to work interruption and file loss, and more serious power failure can also lead to important file loss of a computer system, so that the computers cannot be started normally.
At present, corresponding generators exist in the market, but the generators are often charged when power supply is normal, stored electric energy is released to supply power after power failure, natural energy cannot be effectively utilized, and the power is directly supplied through solar energy, so that more solar panels are needed for normal power utilization to meet the demands, meanwhile, the electric energy is insufficient in continuous overcast and rainy days, and improvement is needed.
Disclosure of Invention
The invention aims to provide an uninterrupted power supply alternating current power grid circuit so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an uninterruptible power supply ac grid circuit comprising:
the mains supply module is used for supplying 220V alternating current power supply through a live wire and a zero wire;
the solar power supply module is used for converting solar energy into electric energy for storage;
The voltage regulation output module is used for switching on the solar power supply module after the mains supply module is disconnected so as to supply 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 amplifying 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 amplifying module is used for converting the voltage amplified by the first voltage amplifying module into 220V alternating current through a switching tube and a transformer;
The output end of the commercial power 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 still further aspects of the invention: the utility model provides a power supply module includes live wire, zero line, first transformer, fourth diode, sixth electric capacity, and the live wire is connected to the input one end of first transformer, and the zero line is connected to the input other end of first transformer, and the positive pole of fourth diode is connected to the output one end of first transformer, and the sixth electric capacity is connected to the output other end of first transformer, and the negative pole of fourth diode, voltage regulation output module first input are connected to the other end of sixth electric capacity.
As still further aspects 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 still further aspects 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 and a second output voltage, wherein the S electrode of the fifth MOS tube is connected with the output end of the solar power supply module, the G electrode of the fifth MOS tube is connected with the output end of the mains supply module, the D electrode of the fifth MOS tube is connected with the second capacitor, the input end of the voltage stabilizer and the first output voltage, the other end of the second capacitor is grounded, the grounding of the voltage stabilizer is grounded, the output end of the voltage stabilizer is connected with the second output voltage and the third capacitor, and the other end of the third capacitor is grounded.
As still further aspects of the invention: the sine wave output module comprises an RC frequency selecting circuit and a signal amplifying circuit;
the RC frequency selecting circuit is used for selecting a natural frequency voltage from an interference signal generated at the moment of power supply;
the signal amplifying circuit is used for circularly amplifying the natural frequency voltage by any multiple between 1 and 1+5 percent to obtain a distorted output signal, and outputting a sine wave signal with fixed frequency and stable amplitude through a 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 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 still further aspects 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, wherein 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 amplifying 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 amplifying circuit and the input end of the square wave output module.
As still further aspects of the invention: 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 the in-phase end of the second amplifier is connected with the input end of the RC frequency selecting circuit, the reverse phase 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 negative electrode of the second diode and the positive electrode of the third diode, the other end of the fifth resistor is connected with the output end of the second amplifier, the positive electrode of the second diode, the negative electrode of the third diode, the input end of the RC frequency selecting circuit and the input end of the square wave output module, and the power end of the second amplifier is connected with the second input end of the voltage regulating output module.
As still further aspects of the invention: the square wave output module comprises a third amplifier, a sixth resistor and a second potentiometer, wherein the in-phase end of the third amplifier is connected with the input end of the signal amplifying 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 regulating 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 amplifying module.
As still further aspects of the invention: 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, wherein the input end of the fourth inverter is connected with the in-phase end of the fifth amplifier and the input end of the square wave output module, the power end of the fourth inverter is connected with the second output end of the voltage regulating output module, the output end of the fourth 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 amplifying module, the power end of the fifth amplifier is connected with the first output end of the voltage regulating 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, and 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 amplifying module.
As still further aspects 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 electrode of the first MOS tube is connected with the G electrode of the second MOS tube, the output end of the first voltage amplification module, the G electrode of the third MOS tube is connected with the G electrode of the fourth MOS tube, the output end of the first voltage amplification module, the S electrode of the first MOS tube is connected with the first output end of the voltage regulation output module and the S electrode of the third MOS tube, the D electrode of the first MOS tube is connected with the D electrode of the second MOS tube and one end of the second transformer input end, the S electrode of the second MOS tube is grounded, the other end of the second transformer input end is connected with the D electrode of the third MOS tube and the D electrode of the fourth MOS tube, and the S electrode 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 the MOS tube in an automatic conduction mode, the fact that the power supply is not stopped after the mains supply is disconnected is guaranteed, and the power supply is simple in structure and high in practicality.
Drawings
Fig. 1 is a schematic diagram of an uninterruptible power supply ac grid circuit.
Fig. 2 is a circuit diagram of an ac grid circuit for uninterrupted power supply.
Fig. 3 is a pin diagram of inverter 74LS 04.
Wherein: the power supply system 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 of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1, an ac power grid circuit for uninterrupted power supply includes:
The commercial power supply module 1 is used for supplying 220V alternating current power supply 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 mains 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 amplifying module 6 is configured to amplify and output a high level of the square wave signal, and convert a low level of the square wave signal into a high level for amplifying and outputting;
The second voltage amplifying module 7 is used for converting the voltage amplified by the first voltage amplifying module 6 into 220V alternating current through a switching tube and a transformer;
the output end of the mains supply module 1 is connected with the first input end of the voltage regulation output module 3, the output end of the solar power supply module 2 is connected with the second input end of the voltage regulation output module 3, the second output end of the voltage regulation output module 3 is connected with the power input end of the sine wave output module 4, the power input end of the square wave output module 5 and the second power input end of the first voltage amplification module 6, the first output end of the voltage regulation output module 3 is connected with the first power input end of the first voltage amplification module 6 and the power input end of the 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 mains power module 1 includes a live wire L, a neutral wire 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 wire L, the other end of the input end of the first transformer W1 is connected to the neutral wire 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 mains supply is normally supplied with power through a live wire L and a zero line N, is reduced in voltage through a first transformer W1, and is rectified and filtered through a fourth diode D4 and a sixth capacitor C6 to supply power for the G electrode of a fifth MOS tube V5 (PMOS tube).
In another embodiment: the fourth diode D4 and the sixth capacitor may be replaced by a rectifier and a filter for rectifying 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 also be charged by wind power generation and 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 voltage stabilizer U1, a first output voltage VOUT1, a second output voltage VOUT2, an S pole of the fifth MOS transistor V5 is connected to an output end of the solar power supply module 2, a G pole of the fifth MOS transistor V5 is connected to an output end of the mains power supply module 1, a D pole of the fifth MOS transistor V5 is connected to the second capacitor C2, an input end of the voltage stabilizer U1, the first output voltage VOUT1, another end of the second capacitor C2 is grounded, a ground of the voltage stabilizer U1 is grounded, an output end of the voltage stabilizer U1 is connected to the second output voltage VOUT2, the third capacitor C3, and another end of the third capacitor C3 is grounded.
The fifth MOS tube V5 is a PMOS tube, and when the live wire L and the zero wire N are normal, the fifth MOS tube V5 is cut off; when the power supply of the live wire L and the zero line N is disconnected, the fifth MOS tube V5 is conducted, the battery E1 is enabled to supply power by the conduction of the fifth MOS tube V5, the first output voltage VOUT1 is supplied to the second output voltage VOUT2 through the voltage stabilizing output of the voltage stabilizer U1, and the first output voltage VOUT1 and the second output voltage VOUT2 supply power for other modules.
In another embodiment: the model of the voltage stabilizer U1 is 7805, and the voltage stabilizer can stably output 5V voltage and can be replaced by a voltage stabilizer tube.
In this embodiment: referring to fig. 2, the sine wave output module 4 includes an RC frequency selecting circuit and a signal amplifying circuit;
the RC frequency selecting circuit is used for selecting a natural frequency voltage from an interference signal generated at the moment of power supply;
the signal amplifying circuit is used for circularly amplifying the natural frequency voltage by any multiple between 1 and 1+5 percent to obtain a distorted output signal, and outputting a sine wave signal with fixed frequency and stable amplitude through a 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 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 selecting circuit selects proper frequency to be amplified by the signal amplifying 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 percent is enough, the closer to 1), the voltage signal input by the non-inverting terminal is amplified for multiple times to obtain a distorted output signal, the amplification factor is enough between 1 and 1+5 percent, and the distortion output signal generated by the amplification factor which is closer to 1 is more stable.
In another embodiment: the sine wave output module 4 may be replaced by an LC sine wave oscillation circuit, and a sine wave signal may be formed by the charge and discharge of an inductance (L) and a capacitance (C).
In this embodiment: referring to fig. 2, the rc frequency-selecting 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 the input end of the signal amplifying 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 the output end of the signal amplifying circuit and the input end of the square wave output module 5.
At the moment of direct current power supply, the interference signals with rich frequencies are connected in series into an RC frequency selection circuit, and the interference signals are amplified (signal amplification circuit) and appear at the output end of the circuit, but the frequency is very low and is not the required signal, the frequency selection is carried out through the RC frequency selection circuit, and the selected signal frequency can be changed through a fifth capacitor C5 and a 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 suction 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, wherein 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 negative electrode D2 of the second diode, the positive electrode 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 positive electrode of the second diode D2, the negative electrode of the third diode D3, the input terminal of the RC frequency selecting circuit, 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 a plurality of times, a distorted output signal is obtained, finally, a sine wave signal with fixed frequency and stable amplitude can be output through a amplitude stabilizing link, the amplitude of the output voltage is limited by the second diode D2 and the third diode D3 through the voltage stabilizing characteristic, the output waveform is improved, and the distortion is avoided.
In another embodiment, a transistor with a smaller amplification factor may be selected 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, the in-phase end of the third amplifier U3 is connected to the output end of the signal amplifying circuit, the inverting end of the third amplifier U3 is connected to the sixth resistor R6 and the second potentiometer RP2, the other end of the second potentiometer RP2 is connected to the second output end of the voltage regulating output module 3, the other end of the sixth resistor R6 is grounded, and the output end of the third amplifier U3 is connected to the input end of the first voltage amplifying module 6.
The input sine wave voltage is smaller than the voltage of the inverting terminal of the third amplifier U3, and the third amplifier U3 outputs a low level; the input sine wave voltage is greater than the inverting terminal voltage of the third amplifier U3, and the third amplifier outputs the voltage VOUT2, thereby forming a square wave signal.
In another embodiment, the amplifier model number is selected from 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, wherein an input end of the fourth inverter U4 is connected to an in-phase end of the fifth amplifier U5 and an output end of the square wave output module 5, a power supply end of the fourth inverter U4 is connected to a second output end of the voltage regulating output module 3, an output end of the fourth inverter U4 is connected to an in-phase end of the sixth amplifier U6, an inverting end of the fifth amplifier U5 is connected to a seventh resistor R7, an eighth resistor R8, another end of the seventh resistor R7 is grounded, another end of the eighth resistor R8 is connected to an output end of the fifth amplifier U5, an input end of the second voltage amplifying module 7, a power supply end of the fifth amplifier U5 is connected to a first output end of the voltage regulating output module 3, an inverting end of the sixth amplifier U6 is connected to the ninth resistor R9, an inverting end of the tenth resistor R10 is connected to another end of the sixth amplifier U6, and another end of the eighth resistor R10 is connected to an output end of the sixth amplifier U6.
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 configured to amplify an 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 to the low level, the low level to 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 output square wave of the fifth amplifier U5 is the high level, the sixth amplifier U6 outputs the square wave as the low level; when the output square wave of the fifth amplifier U5 is at a low level, the output square wave of the sixth amplifier U6 is at a high level.
In another embodiment: the signal amplification may be performed by a triode instead of the fifth amplifier U5 and the sixth amplifier U6.
In this embodiment: referring to fig. 2, the second voltage amplification 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, wherein a G pole of the first MOS transistor V1 is connected to a G pole of the second MOS transistor V2, an output end of the first voltage amplification module 6, a G pole of the third MOS transistor V3 is connected to a G pole of the fourth MOS transistor V4, an output end of the first voltage amplification module 6, an S pole of the first MOS transistor V1 is connected to a first output end of the voltage regulation output module 3, an S pole of the third MOS transistor V3, a D pole of the first MOS transistor V1 is connected to a D pole of the second MOS transistor V2, one end of the second transformer W2 is connected to an S pole of the second transformer W2, and the other end of the second transformer W2 is connected to a D pole of the third MOS transistor V3, a D pole of the fourth MOS transistor V4 is connected to an S pole of the fourth MOS transistor V4.
The first MOS tube V1 and the third MOS tube V3 are PMOS tubes, and the second MOS tube V2 and the fourth MOS tube V4 are NMOS tubes; when the fifth amplifier U5 outputs high level and the sixth amplifier U6 outputs low level, the second MOS tube V2 and the third MOS tube V3 are conducted, the first MOS tube V1 and the fourth MOS tube V4 are cut 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 tube V2 and the third MOS tube V3 are cut off, the first MOS tube V1 and the fourth MOS tube V4 are conducted, and the current direction of the second transformer W2 is from top to bottom; the input square wave signal is reciprocally changed to form alternating current, and then the alternating current is amplified by the second transformer W2 to output 220V alternating current, and the power is supplied when the mains supply is powered off.
In another embodiment, the PMOS and NMOS transistors may be replaced with corresponding PNP and NPN transistors.
The working principle of the invention is as follows: under normal conditions, 220V alternating current is supplied to each electric appliance by the mains supply module 1, when the mains supply module 1 is disconnected, the voltage regulating module is conducted with a fifth MOS tube V5 of a switch of the solar energy supply module, the solar energy supply module which converts solar energy into electric energy supplies power for the voltage regulating module, the voltage regulating module regulates output voltage to supply power for other modules, the sine wave output module 4 obtains power to output sine wave signals, the square wave output module 5 outputs square wave signals, the square wave signals amplify the signal intensity of the square wave signals through the first voltage amplifying module 6, the amplified square wave signals form alternating current through four MOS tubes of the second voltage amplifying module 7, and the voltage signals are amplified through the second transformer W2 to enable the amplified square wave signals to output 220V alternating current to be supplied to each electric appliance. The fifth MOS tube V5 is used as a switch of a circuit, and is turned on from off immediately after the mains supply module 1 is disconnected, so that the solar power supply module 2 supplies power, and the solar power supply module is simple in 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 characteristics 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 disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. An uninterrupted power supply's alternating current network circuit, its characterized in that:
The uninterrupted power supply alternating current power grid circuit comprises:
the mains supply module is used for supplying 220V alternating current power supply through a live wire and a zero wire;
the solar power supply module is used for converting solar energy into electric energy for storage;
The voltage regulation output module is used for switching on the solar power supply module after the mains supply module is disconnected so as to supply 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 amplifying 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 amplifying module is used for converting the voltage amplified by the first voltage amplifying module into 220V alternating current through a switching tube and a transformer;
The output end of the commercial power 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 uninterruptible power supply of claim 1, wherein the mains power module includes a live wire, a neutral wire, a first transformer, a fourth diode, and a sixth capacitor, wherein one end of an input terminal of the first transformer is connected to the live wire, the other end of an 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 an 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 a first input terminal of the voltage regulation output module.
3. The uninterruptible power supply of claim 1, wherein the solar power supply module comprises a solar panel, a first diode, a first capacitor and a battery, 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 first capacitor, the battery and the second input end of 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.
4. The uninterruptible power supply alternating current power grid circuit according to claim 1, wherein the voltage regulation output module comprises a fifth MOS tube, a second capacitor, a third capacitor, a voltage stabilizer, a first output voltage and a second output voltage, an S electrode of the fifth MOS tube is connected with an output end of the solar power supply module, a G electrode of the fifth MOS tube is connected with an output end of the mains power supply module, a D electrode of the fifth MOS tube is connected with the second capacitor, an input end of the voltage stabilizer and the first output voltage, the other end of the second capacitor is grounded, a ground of the voltage stabilizer is grounded, an output end of the voltage stabilizer is connected with the second output voltage and the third capacitor, and the other end of the third capacitor is grounded.
5. The uninterruptible power supply of claim 1, wherein the sine wave output module comprises an RC frequency selection circuit and a signal amplification circuit;
the RC frequency selecting circuit is used for selecting a natural frequency voltage from an interference signal generated at the moment of power supply;
the signal amplifying circuit is used for circularly amplifying the natural frequency voltage by any multiple between 1 and 1+5 percent to obtain a distorted output signal, and outputting a sine wave signal with fixed frequency and stable amplitude through a 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 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 uninterruptible power supply ac power grid circuit according to claim 5, wherein the RC frequency selection 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 uninterruptible power supply alternating current network circuit according to 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 the in-phase end of the second amplifier is connected with the input end of the RC frequency selecting circuit, the reverse phase 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 negative electrode of the second diode and the positive electrode of the third diode, the other end of the fifth resistor is connected with the output end of the second amplifier, the positive electrode of the second diode, the negative electrode of the third diode, the input end of the RC frequency selecting circuit and the input end of the square wave output module, and the power end of the second amplifier is connected with the second input end of the voltage regulating output module.
8. The uninterruptible power supply alternating current power grid circuit according to claim 7, wherein 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 amplifying 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 regulating 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 amplifying module.
9. The uninterruptible power supply ac power grid circuit according to claim 1, wherein the first voltage amplification 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 end of the fourth inverter is connected with an in-phase end of the fifth amplifier, an input end of the square wave output module, a power end of the fourth inverter is connected with a second output end of the voltage regulation output module, an output end of the fourth inverter is connected with an in-phase end of the sixth amplifier, an 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 an output end of the fifth amplifier and an input end of the second voltage amplification module, an inverting end of the fifth 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 an output end of the sixth amplifier, an input end of the second voltage module, and the power end of the sixth amplifier is connected with the first voltage regulation output module.
10. The uninterruptible power supply alternating current power grid circuit according to claim 1, wherein 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, 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 second transformer input end is grounded, the other end of the second transformer input end is connected with the D pole of the third MOS tube, the D pole of the fourth MOS tube, and the S pole of the fourth MOS tube 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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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
CN113285425A (en) * 2021-07-23 2021-08-20 深圳市森皓伟业制冷设备有限公司 Rectifier with protection function

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944853A (en) * 2010-03-19 2011-01-12 郁百超 Green power inverter
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
CN113285425A (en) * 2021-07-23 2021-08-20 深圳市森皓伟业制冷设备有限公司 Rectifier with protection function

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