CN116683608A - Switching circuit of inverter - Google Patents

Switching circuit of inverter Download PDF

Info

Publication number
CN116683608A
CN116683608A CN202310566497.2A CN202310566497A CN116683608A CN 116683608 A CN116683608 A CN 116683608A CN 202310566497 A CN202310566497 A CN 202310566497A CN 116683608 A CN116683608 A CN 116683608A
Authority
CN
China
Prior art keywords
module
voltage
power supply
resistor
triode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310566497.2A
Other languages
Chinese (zh)
Inventor
杨晓光
陈阳
何杰
郜鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hongzheng Energy Storage Shanghai Energy Technology Co ltd
Original Assignee
Hongzheng Energy Storage Shanghai Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hongzheng Energy Storage Shanghai Energy Technology Co ltd filed Critical Hongzheng Energy Storage Shanghai Energy Technology Co ltd
Priority to CN202310566497.2A priority Critical patent/CN116683608A/en
Publication of CN116683608A publication Critical patent/CN116683608A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • 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
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/10—The network having a local or delimited stationary reach
    • H02J2310/12—The local stationary network supplying a household or a building

Abstract

The invention discloses a switching circuit of an inverter, which relates to the field of power supply, and comprises: the new energy power supply module is used for obtaining direct current through new energy and supplying the direct current to the voltage stabilizing module; the voltage stabilizing module is used for generating stable set voltage and supplying the stable set voltage to the frequency signal module, the voltage inverting and amplifying module, the voltage detection switching module and the recovery module; the frequency signal module is used for generating two frequency signals to drive the voltage inversion amplification module; the beneficial effects of the invention are as follows: the invention detects the new energy power supply through the voltage detection switching module, and timely switches to the mains supply power supply when the power supply is unstable, thereby ensuring good household power consumption; the recovery module is matched with the voltage detection switching module, and time detection is carried out after the new energy power supply is recovered to be normal, so that the new energy power supply is ensured to be stable at the moment, fluctuation of the new energy power supply is avoided, and the voltage detection switching module is caused to frequently switch the new energy power supply and the mains supply power supply.

Description

Switching circuit of inverter
Technical Field
The invention relates to the field of power supply, in particular to a switching circuit of an inverter.
Background
Development of new energy economy is a today's necessary choice. In recent years, petroleum, coal and natural gas-based petrochemical energy sources have come to have an unprecedented crisis, the reserves have been continuously reduced, and in addition, global warming has been artificially caused after carbon dioxide gas generated after the use of the petrochemical energy sources is discharged into the atmosphere as greenhouse gas.
At present, new energy power supply is greatly developed, small household new energy power supply equipment also appears, direct current obtained by new energy is converted into 220 alternating current through an inverter for household use, petrochemical energy can be replaced to a certain extent, but the new energy (solar energy, wind energy, water energy and the like) power supply is limited by the environment, the power supply is not stable enough, the user experience is poor, and improvement is needed.
Disclosure of Invention
The present invention is directed to a switching circuit of an inverter, which solves the above-mentioned problems of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a switching circuit of an inverter, comprising:
the new energy power supply module is used for obtaining direct current through new energy and supplying the direct current to the voltage stabilizing module;
the voltage stabilizing module is used for generating stable set voltage and supplying the stable set voltage to the frequency signal module, the voltage inverting and amplifying module, the voltage detection switching module and the recovery module;
the frequency signal module is used for generating two frequency signals to drive the voltage inversion amplification module;
the voltage inversion amplifying module is used for converting direct current into alternating current;
the first power supply module is used for outputting 220V alternating current to supply household power;
the voltage detection switching module is used for detecting the power supply voltage of the voltage stabilizing module, controlling the first power supply module to stop supplying power when the power supply voltage is lower than the set voltage, switching the second power supply module to start supplying power, and driving the recovery module to work;
the second power supply module is used for supplying the mains supply to the household power;
the recovery module is used for detecting whether the power supply of the voltage stabilizing module is recovered to the set voltage or not when the voltage stabilizing module works, outputting a control signal to the voltage detection switching module after the set voltage is recovered to the set time, further controlling the second power supply module to stop supplying power, and switching the first power supply module to start supplying power;
the output end of the new energy power supply module is connected with the input end of the voltage stabilizing module, the output end of the voltage stabilizing module is connected with the input end of the frequency signal module, the first input end of the voltage inversion amplifying module, the input end of the voltage detection switching module and the first input end of the recovery module, the output end of the frequency signal module is connected with the second input end of the voltage inversion amplifying module, the output end of the voltage inversion amplifying module is connected with the first input end of the first power supply module, the first output end of the voltage detection switching module is connected with the second input end of the recovery module, and the second output end of the voltage detection switching module is connected with the input end of the second power supply module and the second input end of the first power supply module.
As still further aspects of the invention: the voltage stabilizing module comprises a first capacitor, a voltage stabilizer and a second capacitor, wherein the input end of the voltage stabilizer is connected with one end of the first capacitor and the output end of the new energy power supply module, the other end of the first capacitor is grounded, the grounding of the voltage stabilizer is grounded, the output end of the voltage stabilizer is connected with one end of the second capacitor, the input end of the frequency signal module, the first input end of the voltage inversion amplifying module, the input end of the voltage detection switching module and the first input end of the recovery module, and the other end of the second capacitor is grounded.
As still further aspects of the invention: the frequency signal module comprises a third triode, a fourth triode, a fifth capacitor, a sixth capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a first potentiometer, wherein an emitter of the third triode is connected with an emitter of the fourth triode and an output end of the voltage stabilizing module, a collector of the third triode is connected with one end of the fifth capacitor, one end of the fourth resistor and a second input end of the voltage inverting amplification module, the other end of the fourth resistor is connected with one end of the fifth resistor and one end of the first potentiometer, the other end of the fifth resistor is connected with the other end of the fifth capacitor and a base of the fourth triode, a sliding end of the first potentiometer is grounded through the sixth resistor, the other end of the first potentiometer is connected with one end of the seventh resistor and one end of the eighth resistor, the other end of the seventh resistor is connected with one end of the sixth capacitor and a base of the third triode, and the other end of the eighth resistor is connected with the other end of the sixth capacitor and the collector of the fourth triode and a second input end of the voltage inverting amplification module.
As still further aspects of the invention: the voltage inverting amplifying module comprises a third resistor, a fourth capacitor, a fifth triode, a seventh triode, a ninth resistor, a seventh capacitor, a sixth triode, an eighth triode and a transformer, wherein an emitter of the fifth triode is connected with a collector of the seventh triode, one end of the fourth capacitor, one end of the seventh capacitor, the emitter of the sixth triode, a collector of the eighth triode and an output end of the voltage stabilizing module, the other end of the fourth capacitor is connected with one end of the third resistor and a base of the fifth triode, the other end of the third resistor is connected with a collector of the third triode, the collector of the fifth triode is connected with a second end of the transformer, a first end of the transformer is connected with a base of the seventh triode, an emitter of the seventh triode is connected with a third end of the transformer, a fourth end of the transformer is grounded, a fifth end of the transformer is connected with an emitter of the eighth triode, a base of the eighth triode is connected with a seventh end of the transformer, a sixth end of the transformer is connected with one end of the eighth resistor, the other end of the eighth triode is connected with the other end of the seventh resistor, the other end of the eighth triode is connected with a base of the eighth resistor, and the base of the eighth triode is connected with a power supply end of the eighth resistor.
As still further aspects of the invention: the first power supply module comprises a first switch and a fourth switch, one end of the first switch is connected with the eighth end of the transformer, the other end of the first switch is connected with one end of the fourth switch through an electric appliance, and the other end of the fourth switch is connected with the ninth end of the transformer.
As still further aspects of the invention: the voltage detection switching module comprises a first diode, a first resistor, a first MOS tube, a silicon controlled rectifier, a relay, a second diode and an inverter, wherein the negative electrode of the first diode is connected with the S electrode of the first MOS tube, the output end of the voltage stabilizing module, the positive electrode of the first diode is connected with one end of the first resistor and the input end of the inverter, the output end of the inverter is connected with the control electrode of the silicon controlled rectifier, the other end of the first resistor is grounded, the D electrode of the first MOS tube is connected with the positive electrode of the silicon controlled rectifier, the G electrode of the first MOS tube is connected with a common point, the negative electrode of the silicon controlled rectifier is connected with one end of the relay, the negative electrode of the second diode and the second input end of the recovery module, the other end of the relay is grounded, and the positive electrode of the second diode is grounded.
As still further aspects of the invention: the second power supply module comprises a live wire, a zero line, a second switch and a third switch, one end of the second switch is connected with the live wire, one end of the third switch is connected with the zero line, and the other end of the second switch is connected with the other end of the third switch through an electrical appliance.
As still further aspects of the invention: the recovery module comprises a second MOS tube, a third diode, a fourth diode, a third capacitor and a second resistor, wherein the D electrode of the second MOS tube is connected with the output end of the voltage stabilizing module, the G electrode of the second MOS tube is connected with the negative electrode of the controllable silicon, the S electrode of the second MOS tube is connected with the negative electrode of the third diode, the positive electrode of the third diode is connected with the negative electrode of the fourth diode, one end of the third capacitor and one end of the second resistor, the other end of the third capacitor is grounded, the other end of the second resistor is grounded, and the positive electrode of the fourth diode is connected with the G electrode of the first MOS tube.
Compared with the prior art, the invention has the beneficial effects that: the invention detects the new energy power supply through the voltage detection switching module, and timely switches to the mains supply power supply when the power supply is unstable, thereby ensuring good household power consumption; the recovery module is matched with the voltage detection switching module, and time detection is carried out after the new energy power supply is recovered to be normal, so that the new energy power supply is ensured to be stable at the moment, fluctuation of the new energy power supply is avoided, and the voltage detection switching module is caused to frequently switch the new energy power supply and the mains supply power supply.
Drawings
Fig. 1 is a schematic diagram of a switching circuit of an inverter.
Fig. 2 is a first partial circuit diagram of a switching circuit of an inverter.
Fig. 3 is a second partial circuit diagram of a switching circuit of an inverter.
Fig. 4 is a circuit diagram of a second power supply 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, a switching circuit of an inverter includes:
the new energy power supply module 1 is used for obtaining direct current through new energy and supplying the direct current to the voltage stabilizing module 2;
the voltage stabilizing module 2 is used for generating stable set voltage and supplying the stable set voltage to the frequency signal module 3, the voltage inverting and amplifying module 4, the voltage detection switching module 6 and the recovery module 8;
a frequency signal module 3 for generating two frequency signals to drive the voltage inverting amplification module 4;
the voltage inversion amplifying module 4 is used for converting direct current into alternating current;
the first power supply module 5 is used for outputting 220V alternating current to supply household power;
the voltage detection switching module 6 is used for detecting the power supply voltage of the voltage stabilizing module 2, controlling the first power supply module 5 to stop supplying power when the power supply voltage is lower than the set voltage, switching the second power supply module 7 to start supplying power, and driving the recovery module 8 to work;
a second power supply module 7 for supplying mains power to the household;
the recovery module 8 is configured to detect, when the voltage stabilizing module 2 is in operation, whether to recover to a set voltage, and output a control signal to the voltage detection switching module 6 after the set voltage is recovered for a set time, so as to control the second power supply module 7 to stop supplying power, and switch the first power supply module 5 to start supplying power;
the output end of the new energy power supply module 1 is connected with the input end of the voltage stabilizing module 2, the output end of the voltage stabilizing module 2 is connected with the input end of the frequency signal module 3, the first input end of the voltage inversion amplifying module 4, the input end of the voltage detection switching module 6 and the first input end of the recovery module 8, the output end of the frequency signal module 3 is connected with the second input end of the voltage inversion amplifying module 4, the output end of the voltage inversion amplifying module 4 is connected with the first input end of the first power supply module 5, the first output end of the voltage detection switching module 6 is connected with the second input end of the recovery module 8, and the second output end of the voltage detection switching module 6 is connected with the input end of the second power supply module 7 and the second input end of the first power supply module 5.
In particular embodiments: the new energy power supply module 1 generates direct current through new energy sources such as wind energy, solar energy, water energy and the like, and serves as a power supply basis.
In this embodiment: referring to fig. 2, the voltage stabilizing module 2 includes a first capacitor C1, a voltage stabilizer U1, and a second capacitor C2, wherein an input end of the voltage stabilizer U1 is connected to one end of the first capacitor C1 and an output end of the new energy power supply module 1, another end of the first capacitor C1 is grounded, a ground of the voltage stabilizer U1 is grounded, and an output end of the voltage stabilizer U1 is connected to one end of the second capacitor C2, an input end of the frequency signal module 3, a first input end of the voltage inverting amplifying module 4, an input end of the voltage detecting switching module 6, a first input end of the recovery module 8, and another end of the second capacitor C2 is grounded.
The direct current output by the new energy power supply module 1 is output to a stable voltage through the voltage stabilizer U1 and is supplied to a subsequent circuit.
In another embodiment: the first capacitor C1 and the second capacitor C2 may be omitted, and the first capacitor C1 and the second capacitor C2 are used for ensuring stable voltage.
In this embodiment: referring to fig. 3, the frequency signal module 3 includes a third triode V3, a fourth triode V4, a fifth capacitor C5, a sixth capacitor C6, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, and a first potentiometer RP1, wherein an emitter of the third triode V3 is connected to an emitter of the fourth triode V4 and an output end of the voltage stabilizing module 2, a collector of the third triode V3 is connected to one end of the fifth capacitor C5, one end of the fourth resistor R4, a second input end of the voltage inverting amplification module 4, one end of the fourth resistor R4 is connected to one end of the fifth resistor R5, one end of the first potentiometer RP1, the other end of the fifth resistor R5 is connected to the other end of the fifth capacitor C5, a base of the fourth triode V4, a sliding end of the first potentiometer RP1 is grounded through the sixth resistor R6, the other end of the first potentiometer RP1 is connected to one end of the seventh resistor R7, one end of the eighth resistor R8, the other end of the seventh resistor R7 is connected to the other end of the fourth resistor R6, and the other end of the fourth resistor R6 is connected to the other end of the third resistor V4.
The third triode V3 and the fourth triode V4 are the same in model, the fifth capacitor C5 and the sixth capacitor C6 are the same in model, the fourth resistor R4 and the eighth resistor R8 are the same in resistance, the fifth resistor R5 and the seventh resistor R7 are the same in resistance, and as no identical triode exists, after voltage input, the third triode V3 and the fourth triode V4 have a conduction difference, for example, the third triode V3 is conducted first (the collector output voltage is larger than the base output voltage), the fifth capacitor C5 and the sixth capacitor C6 are charged, so that the voltages of the fifth capacitor C5 and the sixth capacitor C6 are increased, the voltage of the fifth capacitor C5 rises rapidly, the fourth triode V4 is restrained from conducting (the base voltage of the fourth triode V4 is made to be higher), when the voltage on the sixth capacitor C6 rises to restrain the third triode V3 from conducting, the fifth capacitor C5 discharges, the fourth triode V4 is further conducted, the fourth triode V4 repeats the working process of the third triode V3 to charge the sixth capacitor C6 and the fifth capacitor C5, finally the fourth triode V4 is turned off, the sixth capacitor C6 discharges, the third triode V3 is conducted, and the voltage inverting amplification module 4 is driven by two frequency signals formed by the fifth capacitor C5 and the sixth capacitor C6 in a reciprocating manner.
In another embodiment: the first potentiometer RP1 may be omitted, and the first potentiometer RP1 is used to adjust the current magnitude, so as to reduce noise.
In this embodiment: referring to fig. 3, the voltage inverting amplifier module 4 includes a third resistor R3, a fourth capacitor C4, a fifth triode V5, a seventh triode V7, a ninth resistor R9, a seventh capacitor C7, a sixth triode V6, an eighth triode V8, and a transformer W, wherein an emitter of the fifth triode V5 is connected to a collector of the seventh triode V7, one end of the fourth capacitor C4, one end of the seventh capacitor C7, an emitter of the sixth triode V6, a collector of the eighth triode V8, an output end of the voltage stabilizing module 2, another end of the fourth capacitor C4 is connected to one end of the third resistor R3, a base of the fifth triode V5, another end of the third resistor R3 is connected to a collector of the third triode V3, a collector of the fifth triode V5 is connected to a second end of the transformer W, a first end of the transformer W is connected to a base of the seventh triode V7, an emitter of the seventh triode V7 is connected to a third end of the transformer W, a fourth end of the transformer W is grounded, another end of the transformer W is connected to a base of the eighth triode V8, another end of the eighth triode V8 is connected to another end of the transformer W is connected to a base of the eighth triode V6, another end of the eighth triode V8 is connected to another end of the eighth triode V7, and another end of the eighth triode V is connected to another end of the eighth triode V9 is connected to another end of the eighth triode V6.
When the fifth capacitor C5 outputs a frequency signal, the fifth triode V5 is conducted, and then the seventh triode V7 is driven to be conducted, so that a current signal is formed between the third end and the fourth end of the transformer W; when the sixth capacitor C6 outputs a frequency signal, the sixth triode V6 is turned on, the eighth triode V8 is turned on, and a current signal is formed between the fifth end and the fourth end of the transformer W, so that an ac signal is generated, and 220V ac is output after being amplified by the transformer W.
In another embodiment: the eighth transistor V8 and the seventh transistor V7 may be omitted, which may lack a voltage amplifying process, and require more strict requirements on the turns ratio of the input terminal and the output terminal of the transformer W.
In this embodiment: referring to fig. 3, the first power supply module 5 includes a first switch S1 and a fourth switch S4, one end of the first switch S1 is connected to the eighth end of the transformer W, the other end of the first switch S1 is connected to one end of the fourth switch S4 through an electrical appliance, and the other end of the fourth switch S4 is connected to the ninth end of the transformer W.
The first switch S1 and the second switch S2 are normally closed, and 220V alternating current passes through the first switch S1, the second switch S2 and the electric device to form a power supply loop.
In another embodiment: a fuse can be arranged in the circuit, and the protection circuit is opened in time when the electricity consumption is abnormal.
In this embodiment: referring to fig. 2, the voltage detection switching module 6 includes a first diode D1, a first resistor R1, a first MOS transistor V1, a thyristor Z1, a relay J1, a second diode D2, and an inverter U2, wherein a negative electrode of the first diode D1 is connected to an S electrode of the first MOS transistor V1, an output end of the voltage stabilizing module 2, a positive electrode of the first diode D1 is connected to one end of the first resistor R1, an input end of the inverter U2, an output end of the inverter U2 is connected to a control electrode of the thyristor Z1, another end of the first resistor R1 is grounded, a D electrode of the first MOS transistor V1 is connected to an anode of the thyristor Z1, a G electrode of the first MOS transistor V1 is connected to a common point, a negative electrode of the thyristor Z1 is connected to one end of the relay J1, a negative electrode of the second diode D2, a second input end of the recovery module 8, and another end of the relay J1 is grounded.
Under normal conditions, the output voltage of the new energy power supply module 1 is larger, and the power consumption requirement of the input end of the voltage stabilizer U1 is enough, so that the output end of the voltage stabilizer U1 outputs stable set voltage; because the new energy is affected by the environment, when the output voltage of the new energy power supply module 1 is smaller, the voltage output to the voltage stabilizer U1 does not meet the maintenance supply set voltage, and the output voltage of the voltage stabilizer U1 is reduced, so that the alternating current finally supplied to the electric device is lower than 220V; at this time, the first diode D1 (zener diode) is not turned on, the input end of the inverter U2 is at a low level, and the output end of the inverter U2 is at a high level, so that the silicon controlled rectifier Z1 is turned on, and then the voltage passes through the first MOS transistor V1 and the silicon controlled rectifier Z1 to supply power to the relay J1, the relay J1 is powered on, the first switch S1 and the fourth switch S4 are controlled to be sprung open, the second switch S2 and the third switch S3 are closed, so that the first power supply module 5 stops supplying power, and the second power supply module 7 starts supplying power.
In another embodiment: the second diode D2 may be omitted, the second diode D2 being used for freewheeling, and current being drained when the relay J1 is turned off, reducing the possibility of damage to the relay J1.
In this embodiment: referring to fig. 4, the second power supply module 7 includes a live wire L, a neutral wire N, a second switch S2, and a third switch S3, wherein one end of the second switch S2 is connected to the live wire L, one end of the third switch S3 is connected to the neutral wire N, and the other end of the second switch S2 is connected to the other end of the third switch S3 through an electrical appliance.
After the second switch S2 and the third switch S3 are closed, the live wire L-the second switch S2-the electric device-the third switch S3-the zero line N form a power supply loop, the electric device is used for power supply work, and the commercial power source replaces new energy for power supply.
In another embodiment: the second switch S2 and the third switch S3 may be replaced by a triac Z1.
In this embodiment: referring to fig. 2, the recovery module 8 includes a second MOS transistor V2, a third diode D3, a fourth diode D4, a third capacitor C3, and a second resistor R2, where a D pole of the second MOS transistor V2 is connected to an output end of the voltage stabilizing module 2, a G pole of the second MOS transistor V2 is connected to a negative pole of the silicon controlled rectifier Z1, an S pole of the second MOS transistor V2 is connected to a negative pole of the third diode D3, an anode of the third diode D3 is connected to a negative pole of the fourth diode D4, one end of the third capacitor C3, one end of the second resistor R2, another end of the third capacitor C3 is grounded, another end of the second resistor R2 is grounded, and an anode of the fourth diode D4 is connected to a G pole of the first MOS transistor V1.
When the voltage detection switching module 6 detects that the voltage is smaller, the G pole of the second MOS tube V2 (NMOS) passes through a high level through the controllable silicon Z1, the second MOS tube V2 is electrified to work, and then the recovery module 8 starts to work; the third diode D3 is used as a zener diode, and when the supply voltage of the zener module 2 is lower than the set voltage, the third diode D3 is not sufficiently turned on; after the new energy power supply module 1 resumes normal power supply, the voltage stabilizing module 2 outputs the set voltage, charges the third capacitor C3 through the third diode D3, and along with the progress of the third capacitor C3 charging, after a period of charging, the voltage of the third capacitor C3 reaches a certain value, triggers the fourth diode D4 (voltage stabilizing diode) to conduct, provides a high level for the G pole of the first MOS tube V1 (PMOS tube), the first MOS tube V1 is cut off, the relay J1 stops working, the first switch S1 and the fourth switch S4 are closed again, the second switch S2 and the third switch S3 are cut off, and the new energy is supplied again, and at the moment, the recovery module 8 stops working, thereby avoiding electric energy loss. The third capacitor C3 and the fourth diode D4 are set to have a delay function, so that when the new energy power supply module 1 resumes normal power supply, the relay J1 is immediately disconnected, and the new energy power supply module 1 resumes work; the output voltage of the new energy power supply module 1 is prevented from generating fluctuation when the set voltage output by the voltage stabilizer U1 is just met, and the new energy power supply and the mains supply power supply are frequently switched, so that the relay J1 and the switch frequently work; thereby avoiding the loss of components.
In another embodiment: a light emitting diode may be provided as an indication of whether the new energy source is being supplied or the mains supply is being supplied.
The working principle of the invention is as follows: the new energy power supply module 1 obtains direct current through new energy and supplies the direct current to the voltage stabilizing module 2; the voltage stabilizing module 2 generates stable set voltage and supplies the stable set voltage to the frequency signal module 3, the voltage inverting and amplifying module 4, the voltage detection switching module 6 and the recovery module 8; the frequency signal module 3 generates two frequency signals to drive the voltage inversion amplification module 4; the voltage inversion amplification module 4 converts direct current into alternating current; the first power supply module 5 outputs 220V alternating current to supply household power; the voltage detection switching module 6 detects the power supply voltage of the voltage stabilizing module 2, and when the power supply voltage is lower than the set voltage, the first power supply module 5 is controlled to stop supplying power to the second power supply module 7 to start supplying power, and meanwhile the recovery module 8 is driven to work; the second power supply module 7 supplies the mains supply to the household; when the recovery module 8 works, whether the power supply of the voltage stabilizing module 2 is recovered to the set voltage is detected, after the set voltage is recovered to the set time, a control signal is output to the voltage detection switching module 6, so that the second power supply module 7 is controlled to stop supplying power, and the first power supply module 5 is switched to start supplying power.
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 (8)

1. A switching circuit of an inverter, characterized in that:
the switching circuit of the inverter includes:
the new energy power supply module is used for obtaining direct current through new energy and supplying the direct current to the voltage stabilizing module;
the voltage stabilizing module is used for generating stable set voltage and supplying the stable set voltage to the frequency signal module, the voltage inverting and amplifying module, the voltage detection switching module and the recovery module;
the frequency signal module is used for generating two frequency signals to drive the voltage inversion amplification module;
the voltage inversion amplifying module is used for converting direct current into alternating current;
the first power supply module is used for outputting 220V alternating current to supply household power;
the voltage detection switching module is used for detecting the power supply voltage of the voltage stabilizing module, controlling the first power supply module to stop supplying power when the power supply voltage is lower than the set voltage, switching the second power supply module to start supplying power, and driving the recovery module to work;
the second power supply module is used for supplying the mains supply to the household power;
the recovery module is used for detecting whether the power supply of the voltage stabilizing module is recovered to the set voltage or not when the voltage stabilizing module works, outputting a control signal to the voltage detection switching module after the set voltage is recovered to the set time, further controlling the second power supply module to stop supplying power, and switching the first power supply module to start supplying power;
the output end of the new energy power supply module is connected with the input end of the voltage stabilizing module, the output end of the voltage stabilizing module is connected with the input end of the frequency signal module, the first input end of the voltage inversion amplifying module, the input end of the voltage detection switching module and the first input end of the recovery module, the output end of the frequency signal module is connected with the second input end of the voltage inversion amplifying module, the output end of the voltage inversion amplifying module is connected with the first input end of the first power supply module, the first output end of the voltage detection switching module is connected with the second input end of the recovery module, and the second output end of the voltage detection switching module is connected with the input end of the second power supply module and the second input end of the first power supply module.
2. The switching circuit of an inverter according to claim 1, wherein the voltage stabilizing module comprises a first capacitor, a voltage stabilizer, and a second capacitor, an input end of the voltage stabilizer is connected to one end of the first capacitor and an output end of the new energy power supply module, the other end of the first capacitor is grounded, the ground of the voltage stabilizer is grounded, an output end of the voltage stabilizer is connected to one end of the second capacitor, an input end of the frequency signal module, a first input end of the voltage inverting amplification module, an input end of the voltage detection switching module, a first input end of the recovery module, and the other end of the second capacitor is grounded.
3. The switching circuit of the inverter according to claim 1, wherein the frequency signal module comprises a third triode, a fourth triode, a fifth capacitor, a sixth capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a first potentiometer, an emitter of the third triode is connected with the emitter of the fourth triode and an output end of the voltage stabilizing module, a collector of the third triode is connected with one end of the fifth capacitor, one end of the fourth resistor and a second input end of the voltage inverting amplification module, the other end of the fourth resistor is connected with one end of the fifth resistor and one end of the first potentiometer, the other end of the fifth resistor is connected with the other end of the fifth capacitor and a base of the fourth resistor, a sliding end of the first potentiometer is grounded through the sixth resistor, the other end of the first potentiometer is connected with one end of the seventh resistor and one end of the eighth resistor, the other end of the seventh resistor is connected with one end of the sixth capacitor and a base of the third triode, and the other end of the eighth resistor is connected with the other end of the sixth capacitor and the collector of the fourth triode and the second input end of the voltage inverting amplification module.
4. The switching circuit of the inverter according to claim 3, wherein the voltage inverting amplification module comprises a third resistor, a fourth capacitor, a fifth triode, a seventh triode, a ninth resistor, a seventh capacitor, a sixth triode, an eighth triode and a transformer, wherein an emitter of the fifth triode is connected with a collector of the seventh triode, one end of the fourth capacitor, one end of the seventh capacitor, an emitter of the sixth triode, a collector of the eighth triode and an output end of the voltage stabilizing module, the other end of the fourth capacitor is connected with one end of the third resistor and a base of the fifth triode, the other end of the third resistor is connected with a collector of the third triode, the collector of the fifth triode is connected with a second end of the transformer, a first end of the transformer is connected with a base of the seventh triode, an emitter of the seventh triode is connected with a third end of the transformer, a fourth end of the transformer is grounded, a sixth end of the transformer is connected with an emitter of the eighth triode, a base of the eighth triode is connected with a seventh end of the transformer, a sixth end of the transformer is connected with a sixth end of the sixth triode, the other end of the transformer is connected with a collector of the eighth triode, and the other end of the fourth resistor is connected with a fourth end of the ninth resistor.
5. The switching circuit of an inverter according to claim 4, wherein the first power supply module comprises a first switch and a fourth switch, one end of the first switch is connected to the eighth end of the transformer, the other end of the first switch is connected to one end of the fourth switch through an electrical appliance, and the other end of the fourth switch is connected to the ninth end of the transformer.
6. The switching circuit of the inverter according to claim 1, wherein the voltage detection switching module comprises a first diode, a first resistor, a first MOS transistor, a silicon controlled rectifier, a relay, a second diode, and an inverter, wherein a negative electrode of the first diode is connected with an S electrode of the first MOS transistor, an output end of the voltage stabilizing module, a positive electrode of the first diode is connected with one end of the first resistor, an input end of the inverter, an output end of the inverter is connected with a control electrode of the silicon controlled rectifier, the other end of the first resistor is grounded, a D electrode of the first MOS transistor is connected with a positive electrode of the silicon controlled rectifier, a G electrode of the first MOS transistor is connected with a common point, a negative electrode of the silicon controlled rectifier is connected with one end of the relay, a negative electrode of the second diode, and a second input end of the recovery module, and the other end of the relay is grounded, and the positive electrode of the second diode is grounded.
7. The switching circuit of an inverter according to claim 1, wherein the second power supply module includes a live wire, a neutral wire, a second switch, and a third switch, one end of the second switch is connected to the live wire, one end of the third switch is connected to the neutral wire, and the other end of the second switch is connected to the other end of the third switch by an electrical appliance.
8. The switching circuit of the inverter according to claim 6, wherein the recovery module comprises a second MOS transistor, a third diode, a fourth diode, a third capacitor, and a second resistor, wherein a D pole of the second MOS transistor is connected to an output terminal of the voltage stabilizing module, a G pole of the second MOS transistor is connected to a negative pole of the silicon controlled rectifier, an S pole of the second MOS transistor is connected to a negative pole of the third diode, an anode of the third diode is connected to a negative pole of the fourth diode, one end of the third capacitor, one end of the second resistor, another end of the third capacitor is grounded, another end of the second resistor is grounded, and an anode of the fourth diode is connected to a G pole of the first MOS transistor.
CN202310566497.2A 2023-05-18 2023-05-18 Switching circuit of inverter Pending CN116683608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310566497.2A CN116683608A (en) 2023-05-18 2023-05-18 Switching circuit of inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310566497.2A CN116683608A (en) 2023-05-18 2023-05-18 Switching circuit of inverter

Publications (1)

Publication Number Publication Date
CN116683608A true CN116683608A (en) 2023-09-01

Family

ID=87782793

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310566497.2A Pending CN116683608A (en) 2023-05-18 2023-05-18 Switching circuit of inverter

Country Status (1)

Country Link
CN (1) CN116683608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117134292A (en) * 2023-10-26 2023-11-28 深圳清大电子科技有限公司 Safety protection circuit of display screen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117134292A (en) * 2023-10-26 2023-11-28 深圳清大电子科技有限公司 Safety protection circuit of display screen
CN117134292B (en) * 2023-10-26 2024-01-23 深圳清大电子科技有限公司 Safety protection circuit of display screen

Similar Documents

Publication Publication Date Title
CN116683608A (en) Switching circuit of inverter
CN217590355U (en) UPS intelligent power supply system
CN216751302U (en) Interactive double-direct-current power supply switching device
CN115733228A (en) Charging and discharging control system of energy storage power supply
CN105680418B (en) A kind of load motor protection circuit, fan and air-conditioning
CN205303948U (en) Air purifier high -voltage ion generating device
CN205051933U (en) LED's drive power supply
CN205490127U (en) High -voltage startup circuit
CN204836118U (en) Energy -saving control circuit and row of inserting thereof
CN114884197B (en) Outdoor photovoltaic balanced power supply system
CN107465247B (en) Faraday capacitor delay power-off circuit suitable for intelligent cabinet control system
CN106410747A (en) Uninterrupted power supply (UPS) input protection circuit and UPS
CN204046881U (en) A kind of LED dimming power source
CN205881816U (en) Low voltage driving circuit
CN207283402U (en) ON-OFF control circuit
CN202153656U (en) Switch power supply charger
CN207637713U (en) A kind of power control circuit suitable for electric locomotive contactor
CN201409123Y (en) Touch control self-extinguishing switch
CN2912105Y (en) Full automatic wind power coordinating power source
CN220067261U (en) AC generator controller
CN219018694U (en) Photovoltaic power generation voltage controller
CN214959324U (en) On-line power supply system for outdoor power monitoring
CN219554819U (en) Mining converter discharging device based on hysteresis comparator
CN116599192B (en) Photovoltaic off-grid, commercial network and energy storage hybrid power supply system
CN204947695U (en) A kind of charging circuit for electric vehicles

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination