CN115912976A - Intelligent inverter circuit - Google Patents
Intelligent inverter circuit Download PDFInfo
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- CN115912976A CN115912976A CN202211555679.1A CN202211555679A CN115912976A CN 115912976 A CN115912976 A CN 115912976A CN 202211555679 A CN202211555679 A CN 202211555679A CN 115912976 A CN115912976 A CN 115912976A
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- 239000003990 capacitor Substances 0.000 claims description 22
- 230000009286 beneficial effect Effects 0.000 abstract description 2
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- 230000000295 complement effect Effects 0.000 description 3
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- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention discloses an intelligent inverter circuit, which relates to the field of voltage supply, and comprises: the power supply module is used for supplying direct current; the square wave output module is used for generating a PWM signal and outputting the PWM signal to the driving module; the driving module is used for amplifying the PWM signal and driving the DC-AC module to work; the quick drainage module is used for draining the driving module when the driving module drives the interval; the DC-AC module is used for converting the direct current into alternating current; the alternating current output module is used for outputting alternating current; the safety protection module is used for grounding and discharging current when the voltage supply of the power supply module is abnormal; compared with the prior art, the invention has the beneficial effects that: according to the invention, the PWM signal of the square wave output module is amplified by the driving module, so that the intensity of the PWM signal for driving the DC-AC module is enough, the MOS tube of the DC-AC module is in a complete conduction state when being conducted, and the generated alternating current reaches a predicted value.
Description
Technical Field
The invention relates to the field of voltage supply, in particular to an intelligent inverter circuit.
Background
The inverter converts direct current electric energy (batteries and storage batteries) into alternating current (generally 220V and 50Hz sine waves). The inverter is a DC-AC transformer, and is a voltage inversion process.
The existing inverter is often driven by a PWM signal to generate an ac signal, and when the PWM signal is weak, the corresponding switching tube cannot be completely driven to conduct, so that the generated ac cannot reach the desired 220V, and improvement is required.
Disclosure of Invention
The present invention is directed to a smart inverter circuit to solve the problems set forth in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a smart inverter circuit comprising:
the power supply module is used for supplying direct current;
the square wave output module is used for generating a PWM signal and outputting the PWM signal to the driving module;
the driving module is used for amplifying the PWM signal and driving the DC-AC module to work;
the quick drainage module is used for draining the driving module when the driving module drives the interval;
the DC-AC module is used for converting the direct current into alternating current;
the alternating current output module is used for outputting alternating current;
the safety protection module is used for grounding and draining current when the voltage supply of the power supply module is abnormal;
the power supply module is connected with the safety protection module, the square wave output module, the driving module and the DC-AC module, the square wave output module is connected with the driving module, the driving module is connected with the rapid current discharge module and the DC-AC module, and the DC-AC module is connected with the alternating current output module.
As a still further scheme of the invention: the square wave output module comprises a resistor R5, a diode D2, a capacitor C3, a resistor R2, a capacitor C1, a resistor R3, a capacitor C2, a resistor R4 and an integrated circuit U1, wherein the model of the integrated circuit U1 is TL494, one end of the resistor R5 is connected with a power supply module, the other end of the resistor R5 is connected with the cathode of the diode D2, one end of the capacitor C3, a pin 8 of the integrated circuit U1, a pin 11 of the integrated circuit U1 and a pin 12 of the integrated circuit U1, the other end of the capacitor C3 is grounded, the anode of the diode D2 is grounded, one end of a pin 2 of the integrated circuit U1 is connected with one end of the resistor R2, one end of the capacitor C1, a pin 13 of the integrated circuit U1, a pin 14 of the integrated circuit U1 and a pin 15 of the integrated circuit U1, the other end of the resistor R2 is connected with the other end of the capacitor C1, a pin 4 of the integrated circuit U1 and one end of the resistor R3, the other end of the integrated circuit U1 is grounded, a pin 5 of the integrated circuit U1 is grounded through a pin 5 of the capacitor C2, a pin 6 of the integrated circuit U1 is connected with the pin 6, and a pin 6 of the integrated circuit U1 is connected with the driving module through a pin 10 of the driving module, and a pin 10 of the integrated circuit U1.
As a still further scheme of the invention: the drive module comprises a resistor R6, a triode V2, a resistor R7, a resistor R8, a resistor R9, a triode V4, a power supply module is connected to one end of the resistor R6, the other end of the resistor R6 is connected with a collector of the triode V2, a DC-AC module is connected to an emitter of the triode V2, one end of the base of the triode V2 is connected with the resistor R7, a square wave output module, the other end of the resistor R7 is grounded, the power supply module is connected to one end of the resistor R8, the other end of the resistor R8 is connected with a collector of the triode V4, the DC-AC module is connected to the emitter of the triode V4, one end of the base of the triode V4 is connected with the resistor R9, the square wave output module, and the other end of the resistor R9 is grounded.
As a still further scheme of the invention: the quick earial drainage module includes triode V3, triode V5, triode V2's projecting pole is connected to triode V3's projecting pole, triode V2's base is connected to triode V3's base, triode V3's collecting electrode ground connection, triode V4's projecting pole is connected to triode V5's projecting pole, triode V4's base is connected to triode V5's base, triode V5's collecting electrode ground connection.
As a still further scheme of the invention: the DC-AC module comprises an MOS tube V10, an MOS tube V11, an MOS tube V12, an MOS tube V13, a power supply module is connected with the D pole of the MOS tube V10, the D pole of the MOS tube V11, the S pole of the MOS tube V10 is connected with the D pole of the MOS tube V12, one end of the input end of the transformer W, the D pole of the MOS tube V13 is connected with the S pole of the MOS tube V11, the other end of the input end of the transformer W, the S pole of the MOS tube V12 is grounded, the S pole of the MOS tube V13 is grounded, the G pole of the MOS tube V10 is connected with a driving module, the G pole of the MOS tube V11 is connected with the driving module, the G pole of the MOS tube V12 is connected with the driving module, and the G pole of the MOS tube V13 is connected with the driving module.
As a still further scheme of the invention: the alternating current output module comprises a transformer W and a fuse T, and the output end of the transformer W is connected with the fuse T.
As a still further scheme of the invention: the safety protection module comprises a diode D1, a triode V1 and a resistor R1, wherein the collector of the triode V1 is connected with the cathode of the diode D1 and a power supply module, the anode of the diode D1 is connected with one end of the resistor R1 and the base of the triode V1, the other end of the resistor R1 is grounded, and the emitting electrode of the triode V1 is grounded.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the driving module amplifies the PWM signal of the square wave output module, so that the intensity of the PWM signal for driving the DC-AC module is ensured to be sufficient, the MOS tube of the DC-AC module is ensured to be in a complete conduction state when being conducted, and the generated alternating current reaches a predicted value.
Drawings
Fig. 1 is a schematic diagram of a smart inverter circuit.
Fig. 2 is a circuit diagram of an intelligent inverter circuit.
Fig. 3 is a circuit diagram of a safety protection module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, a smart inverter circuit includes:
the power supply module is used for supplying direct current;
the square wave output module is used for generating a PWM signal and outputting the PWM signal to the driving module;
the driving module is used for amplifying the PWM signal and driving the DC-AC module to work;
the quick drainage module is used for draining the driving module when the driving module drives the interval;
the DC-AC module is used for converting the direct current into alternating current;
the alternating current output module is used for outputting alternating current;
the safety protection module is used for grounding and discharging current when the voltage supply of the power supply module is abnormal;
the power supply module is connected with the safety protection module, the square wave output module, the driving module and the DC-AC module, the square wave output module is connected with the driving module, the driving module is connected with the rapid current discharge module and the DC-AC module, and the DC-AC module is connected with the alternating current output module.
In this embodiment: referring to fig. 2, the square wave output module includes a resistor R5, a diode D2, a capacitor C3, a resistor R2, a capacitor C1, a resistor R3, a capacitor C2, a resistor R4, and an integrated circuit U1, where the integrated circuit U1 is TL494, one end of the resistor R5 is connected to the power supply module, the other end of the resistor R5 is connected to the negative electrode of the diode D2, one end of the capacitor C3, pin No. 8 of the integrated circuit U1, pin No. 11 of the integrated circuit U1, and pin No. 12 of the integrated circuit U1, the other end of the capacitor C3 is grounded, the positive electrode of the diode D2 is grounded, one end of the pin No. 2 of the integrated circuit U1 is connected to one end of the resistor R2, one end of the capacitor C1, pin No. 13 of the integrated circuit U1, pin No. 14 of the integrated circuit U1, and pin No. 15 of the integrated circuit U1, the other end of the resistor R2 is connected to the other end of the capacitor C1, pin No. 4 of the integrated circuit U1, one end of the resistor R3 is grounded, the other end of the resistor R3, the integrated circuit U1 is grounded, the pin No. 5 of the integrated circuit U1 is connected to the ground, and connected to the ground through the pin No. 6 of the integrated circuit U1, and the resistor U1, and the integrated circuit U1 is connected to the ground, and the ground.
The voltage input by the power supply module is divided by the resistor R5 and the diode D2, the diode D2 is a voltage stabilizing diode, the voltage on the diode D2 is stable, low-voltage direct current is obtained to supply power to the integrated circuit U1, PWM signals output by the No. 9 pin and the No. 10 pin are complementary, and when one is high level, the other is low level.
In this embodiment: referring to fig. 2, the driving module includes a resistor R6, a transistor V2, a resistor R7, a resistor R8, a resistor R9, and a transistor V4, one end of the resistor R6 is connected to the power supply module, the other end of the resistor R6 is connected to a collector of the transistor V2, an emitter of the transistor V2 is connected to the DC-AC module, a base of the transistor V2 is connected to one end of the resistor R7 and the square wave output module, the other end of the resistor R7 is grounded, one end of the resistor R8 is connected to the power supply module, the other end of the resistor R8 is connected to a collector of the transistor V4, an emitter of the transistor V4 is connected to the DC-AC module, a base of the transistor V4 is connected to one end of the resistor R9 and the square wave output module, and the other end of the resistor R9 is grounded.
The triode V2 and the triode V4 amplify the input PWM signal, ensure the intensity of the PWM signal, and then output the PWM signal to the DC-AC module to drive and generate alternating current.
In this embodiment: referring to fig. 2, the fast draining module includes a transistor V3 and a transistor V5, wherein an emitter of the transistor V3 is connected to an emitter of the transistor V2, a base of the transistor V3 is connected to a base of the transistor V2, a collector of the transistor V3 is grounded, an emitter of the transistor V5 is connected to an emitter of the transistor V4, a base of the transistor V5 is connected to a base of the transistor V4, and a collector of the transistor V5 is grounded.
Because the triodes V2 and V4 can be indirectly conducted due to the PWM signal, the conduction time and the cut-off time of the triodes are complementary, in order to avoid that the voltage still exists at the corresponding position of the DC-AC module after the triodes V2 and V4 (NPN triodes) are cut off, the triodes V3 and V5 (PNP triodes) are arranged, the triodes V2 and V4 are cut off, the triodes V3 and V5 are conducted, and the voltage at the PWM1 and PWM2 is quickly discharged.
In this embodiment: referring to fig. 2, the dc-AC module includes a MOS transistor V10, a MOS transistor V11, a MOS transistor V12, and a MOS transistor V13, a D pole of the MOS transistor V10 is connected to the power supply module, a D pole of the MOS transistor V11, an S pole of the MOS transistor V10 is connected to the D pole of the MOS transistor V12, and one end of the input end of the transformer W, an S pole of the MOS transistor V11 is connected to the D pole of the MOS transistor V13, and the other end of the input end of the transformer W, an S pole of the MOS transistor V12 is grounded, an S pole of the MOS transistor V13 is grounded, a G pole of the MOS transistor V10 is connected to the driving module, a G pole of the MOS transistor V11 is connected to the driving module, a G pole of the MOS transistor V12 is connected to the driving module, and a G pole of the MOS transistor V13 is connected to the driving module.
Signals of the PWM1 and the PMW2 are complementary, so that when the MOS tubes V10 and V13 are switched on, the MOS tubes V11 and V12 are switched off; when the MOS tubes V10 and V13 are cut off, the MOS tubes V11 and V12 are conducted; so that alternating current is formed at the input end of the transformer W, and the alternating current of 220V is output after being amplified by the transformer W.
In this embodiment: referring to fig. 2, the ac output module includes a transformer W and a fuse T, and an output terminal of the transformer W is connected to the fuse T.
The output 220V alternating current is used for supplying power to a load, a fuse T is arranged for preventing overload, and when the circuit current is increased due to overload, the fuse T is prevented from disconnecting a protection circuit.
In this embodiment: referring to fig. 3, the safety protection module includes a diode D1, a triode V1, and a resistor R1, wherein a collector of the triode V1 is connected to a cathode of the diode D1 and the power supply module, an anode of the diode D1 is connected to one end of the resistor R1 and a base of the triode V1, the other end of the resistor R1 is grounded, and an emitter of the triode V1 is grounded.
When power supply module supply voltage was too big, zener diode D1 switched on, and then triode V1 switches on, and power supply module's supply voltage passes through triode V1 ground connection earial drainage, because the internal resistance after triode V1 switches on completely is little, consequently can become direct ground connection, avoids too big voltage damage circuit components and parts.
The working principle of the invention is as follows: the power supply module supplies direct current, the square wave output module generates PWM signals and outputs the PWM signals to the driving module, the driving module amplifies the PWM signals and drives the DC-AC module to work, the rapid current leakage module discharges current to the driving module when the driving module drives the interval, the DC-AC module converts the direct current into alternating current, the alternating current output module outputs the alternating current, and the safety protection module is grounded and leaks current when the power supply module supplies voltage abnormally.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. An intelligent inverter circuit, characterized by:
this intelligence inverter circuit includes:
the power supply module is used for supplying direct current;
the square wave output module is used for generating a PWM signal and outputting the PWM signal to the driving module;
the driving module is used for amplifying the PWM signal and driving the DC-AC module to work;
the quick drainage module is used for draining the driving module when the driving module drives the interval;
the DC-AC module is used for converting the direct current into alternating current;
the alternating current output module is used for outputting alternating current;
the safety protection module is used for grounding and draining current when the voltage supply of the power supply module is abnormal;
the power supply module is connected with the safety protection module, the square wave output module, the driving module and the DC-AC module, the square wave output module is connected with the driving module, the driving module is connected with the rapid current discharge module and the DC-AC module, and the DC-AC module is connected with the alternating current output module.
2. The smart inverter circuit according to claim 1, wherein the square wave output module includes a resistor R5, a diode D2, a capacitor C3, a resistor R2, a capacitor C1, a resistor R3, a capacitor C2, a resistor R4, and an integrated circuit U1, the integrated circuit U1 is of type TL494, one end of the resistor R5 is connected to the power supply module, the other end of the resistor R5 is connected to the cathode of the diode D2, one end of the capacitor C3, pin No. 8 of the integrated circuit U1, pin No. 11 of the integrated circuit U1, pin No. 12 of the integrated circuit U1, the other end of the capacitor C3 is grounded, the anode of the diode D2 is grounded, one end of the pin No. 2 of the integrated circuit U1 is connected to one end of the resistor R2, one end of the capacitor C1, pin No. 13 of the integrated circuit U1, pin No. 14 of the integrated circuit U1, pin No. 15 of the integrated circuit U1, the other end of the resistor R2 is connected to the other end of the capacitor C1, pin No. 4 of the integrated circuit U1, one end of the resistor R3 is grounded, the pin No. 5 of the integrated circuit U1 is connected to the ground through the pin No. 4 of the integrated circuit U1, and the integrated circuit U1 is connected to the ground through the resistor R1, the integrated circuit U1, the ground module.
3. The intelligent inverter circuit according to claim 1, wherein the driving module comprises a resistor R6, a transistor V2, a resistor R7, a resistor R8, a resistor R9, and a transistor V4, one end of the resistor R6 is connected to the power supply module, the other end of the resistor R6 is connected to the collector of the transistor V2, the emitter of the transistor V2 is connected to the DC-AC module, the base of the transistor V2 is connected to one end of the resistor R7 and the square wave output module, the other end of the resistor R7 is grounded, one end of the resistor R8 is connected to the power supply module, the other end of the resistor R8 is connected to the collector of the transistor V4, the emitter of the transistor V4 is connected to the DC-AC module, the base of the transistor V4 is connected to one end of the resistor R9 and the square wave output module, and the other end of the resistor R9 is grounded.
4. The intelligent inverter circuit according to claim 3, wherein the fast draining module comprises a transistor V3 and a transistor V5, wherein an emitter of the transistor V3 is connected to an emitter of the transistor V2, a base of the transistor V3 is connected to a base of the transistor V2, a collector of the transistor V3 is grounded, an emitter of the transistor V5 is connected to an emitter of the transistor V4, a base of the transistor V5 is connected to a base of the transistor V4, and a collector of the transistor V5 is grounded.
5. The intelligent inverter circuit according to claim 1, wherein the DC-AC module includes a MOS transistor V10, a MOS transistor V11, a MOS transistor V12, and a MOS transistor V13, a D pole of the MOS transistor V10 is connected to the power supply module and a D pole of the MOS transistor V11, an S pole of the MOS transistor V10 is connected to a D pole of the MOS transistor V12 and one end of the input end of the transformer W, an S pole of the MOS transistor V11 is connected to a D pole of the MOS transistor V13 and the other end of the input end of the transformer W, an S pole of the MOS transistor V12 is grounded, an S pole of the MOS transistor V13 is grounded, a G pole of the MOS transistor V10 is connected to the driving module, a G pole of the MOS transistor V11 is connected to the driving module, a G pole of the MOS transistor V12 is connected to the driving module, and a G pole of the MOS transistor V13 is connected to the driving module.
6. The intelligent inverter circuit according to claim 1, wherein the ac output module comprises a transformer W and a fuse T, and the output terminal of the transformer W is connected to the fuse T.
7. The intelligent inverter circuit according to claim 1, wherein the safety protection module comprises a diode D1, a transistor V1, and a resistor R1, wherein a collector of the transistor V1 is connected to a negative electrode of the diode D1 and the power supply module, an anode of the diode D1 is connected to one end of the resistor R1 and a base of the transistor V1, the other end of the resistor R1 is grounded, and an emitter of the transistor V1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211555679.1A CN115912976A (en) | 2022-12-06 | 2022-12-06 | Intelligent inverter circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211555679.1A CN115912976A (en) | 2022-12-06 | 2022-12-06 | Intelligent inverter circuit |
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| CN115912976A true CN115912976A (en) | 2023-04-04 |
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| CN202211555679.1A Pending CN115912976A (en) | 2022-12-06 | 2022-12-06 | Intelligent inverter circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116208014A (en) * | 2023-04-28 | 2023-06-02 | 苏州腾圣技术有限公司 | Resonant miniature inverter circuit |
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2022
- 2022-12-06 CN CN202211555679.1A patent/CN115912976A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116208014A (en) * | 2023-04-28 | 2023-06-02 | 苏州腾圣技术有限公司 | Resonant miniature inverter circuit |
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Application publication date: 20230404 |