CN211830606U - Correction sine wave inverter for improving starting load capacity - Google Patents
Correction sine wave inverter for improving starting load capacity Download PDFInfo
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- CN211830606U CN211830606U CN201922406971.7U CN201922406971U CN211830606U CN 211830606 U CN211830606 U CN 211830606U CN 201922406971 U CN201922406971 U CN 201922406971U CN 211830606 U CN211830606 U CN 211830606U
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Abstract
The utility model discloses a promote correction sine wave inverter who starts load capacity, including power input end, rectification filter unit, contravariant output unit, start capacitive load control unit and dc-to-ac converter output, power input end electric connection has rectification filter unit, rectification filter unit electric connection has contravariant output unit. The utility model discloses a make contravariant output unit carry out electric connection with output current sample unit and output voltage sample unit respectively, output current sample unit carries out electric connection with output current detecting element and output short circuit detecting element respectively, output voltage sample unit carries out electric connection with output step-down detecting element and output voltage detecting element respectively, can detect current signal and voltage signal in the circuit, then feed back to the rectification filter unit through PWM1 the control unit and PWM2 the control unit again.
Description
Technical Field
The utility model relates to an inverter equipment technical field specifically is a promote correction sine wave inverter who starts load capacity.
Background
The inverter converts direct current electric energy (batteries and storage batteries) into alternating current (generally 220V,50Hz sine wave). It is composed of inverter bridge, control logic and filter circuit. The multifunctional electric grinding wheel is widely applicable to air conditioners, home theaters, electric grinding wheels, electric tools, sewing machines, DVDs (digital video disks), VCDs (video recorders), computers, televisions, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting and the like. In foreign countries, due to the higher popularization rate of automobiles, the inverter can be used for connecting the storage battery to drive electric appliances and various tools to work when going out for work or traveling. The on-board inverter output through the cigarette lighter is of 20W, 40W, 80W, 120W to 150W power specification. And the other larger power inverter power supply is connected to the battery through a connecting wire. Connecting the household appliance to the output of the power converter enables the use of a variety of appliances in the vehicle. The usable electric appliances include mobile phones, notebook computers, digital video cameras, illumination lamps, electric shavers, CD machines, game machines, palm computers, electric tools, vehicle-mounted refrigerators, and various electric appliances for traveling, camping, medical emergency treatment, and the like.
Most of the traditional inverters adopt square wave inversion to convert direct current into alternating current energy, most of the inverters adopt a power frequency transformer to modulate and output, the load carrying capacity of output waveforms is very weak, even inductive load can not be carried, the loss is large, and certain influence is caused on the service life of electric equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a promote correction sine wave inverter who starts load capacity to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a promote modified sine wave inverter who starts load ability, includes power input end, rectification filter unit, contravariant output unit, starts capacitive load control unit and dc-to-ac converter output, power input end electric connection has rectification filter unit, rectification filter unit electric connection has contravariant output unit, contravariant output unit carries out electric connection with output current sampling unit and output voltage sampling unit respectively simultaneously, the output of contravariant output unit carries out electric connection with the input that starts capacitive load control unit, the output that starts capacitive load control unit carries out electric connection with the input of dc-to-ac converter output.
Preferably, the output end of the output current sampling unit is electrically connected with the input ends of the output short circuit detection unit and the output current detection unit respectively.
Preferably, the output ends of the output short circuit detection unit and the output current detection unit are electrically connected to the input end of the PWM1 control unit at the same time.
Preferably, the output voltage sampling unit is electrically connected to the output voltage step-down detection unit and the output voltage detection unit, respectively.
Preferably, the output step-down detection unit and the output voltage detection unit are electrically connected to the PWM2 control unit at the same time.
Preferably, the PWM1 control unit and the PWM2 control unit are electrically connected to the rectifying and filtering unit, respectively.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model is provided with the power input end, then the power input end is electrically connected with the rectification and filtration power supply, the received electric energy can be converted into high-voltage electric energy and transmitted after filtration, the rectification and filtration power supply is also electrically connected with the inversion output unit, the high-voltage direct current can be inverted to obtain alternating current output, then, the inversion output unit is electrically connected with the output current sampling unit and the output voltage sampling unit respectively, the output current sampling unit is electrically connected with the output short-circuit detection unit and the output current detection unit respectively, the output short-circuit detection unit can detect whether short-circuit current occurs, the output current detection unit can detect current signals in a circuit, the output short-circuit detection unit and the output current detection unit are electrically connected with the PWM1 control unit simultaneously, and the signals can be transmitted to the PWM1 control unit;
2. the utility model discloses still make output voltage sampling unit carry out electric connection with output step-down detecting element and output voltage detecting element respectively simultaneously, output step-down detecting element can detect whether output current reaches the step-down current benchmark, output voltage detecting element can the voltage signal among the detection circuitry, output step-down detecting element and output voltage detecting element carry out electric connection with PWM2 the control unit respectively, can carry the signal for PWM2 the control unit, then make PWM1 the control unit and PWM2 the control unit carry out electric connection with rectification filter power respectively, can feed back the signal, contravariant output unit still carries out electric connection with the dc-to-ac converter output through starting capacitive load the control unit, can carry the circuit through the contravariant for the dc-to-ac converter output.
Drawings
Fig. 1 is a schematic frame structure diagram of the present invention.
In the figure: 1-a power supply input; 2-a rectifying and filtering unit; 3-an inversion output unit; 4-output current sampling unit; 401-output short circuit detection unit; 402-an output current detection unit; 5-PWM1 control unit; 6-output voltage sampling unit; 601-output step-down detection unit; 602-output voltage detection unit; 7-PWM2 control unit; 8-starting the capacitive load control unit; 9-inverter output.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a promote modified sine wave inverter who starts load ability, includes power input end 1, rectification filter unit 2, contravariant output unit 3, starts capacitive load control unit 8 and dc-to-ac converter output 9, power input end 1 electric connection has rectification filter unit 2, rectification filter unit 2 electric connection has contravariant output unit 3, contravariant output unit 3 carries out electric connection with output current sampling unit 4 and output voltage sampling unit 6 respectively simultaneously, contravariant output unit 3's output carries out electric connection with the input that starts capacitive load control unit 8, the output that starts capacitive load control unit 8 carries out electric connection with the input of dc-to-ac converter output 9.
The output end of the output current sampling unit 4 is electrically connected with the input ends of the output short circuit detection unit 401 and the output current detection unit 402 respectively; the output ends of the output short circuit detection unit 401 and the output current detection unit 402 are electrically connected with the input end of the PWM1 control unit 5; the output voltage sampling unit 6 is electrically connected to the output step-down detection unit 601 and the output voltage detection unit 602, respectively; the output step-down detection unit 601 and the output voltage detection unit 602 are electrically connected to the PWM2 control unit 7 at the same time; the PWM1 control unit 5 and the PWM2 control unit 7 are electrically connected with the rectifying and filtering unit 2 respectively at the same time.
The working principle is as follows: the utility model discloses a through being equipped with power input end 1, then make power input end 1 and rectification filter power supply 2 carry on the electrical connection, can convert the received electric energy into high-voltage electric energy and carry on transmission after filtering, rectification filter power supply 2 still electrically connects with contravariant output unit 3, can carry on contravariant to high-voltage direct current and obtain alternating current output, then make contravariant output unit 3 carry on the electrical connection with output current sampling unit 4 and output voltage sampling unit 6 respectively simultaneously, output current sampling unit 4 again respectively with output short-circuit detection unit 401 and output current detection unit 402 respectively carry on the electrical connection, output short-circuit detection unit 401 can detect whether short-circuit current appears, output current detection unit 402 can detect the current signal in the circuit, output short-circuit detection unit 401 and output current detection unit 402 simultaneously with PWM1 control unit 5 carry on the electrical connection, can deliver a signal to the PWM1 control unit 5; meanwhile, the output voltage sampling unit 6 is electrically connected with the output buck detection unit 601 and the output voltage detection unit 602 respectively, the output buck detection unit 601 can detect whether the output current reaches a buck current reference, the output voltage detection unit 602 can detect a voltage signal in the circuit, the output buck detection unit 601 and the output voltage detection unit 602 are electrically connected with the PWM2 control unit 7 respectively, the signal can be transmitted to the PWM2 control unit 7, then the PWM1 control unit 5 and the PWM2 control unit 7 are electrically connected with the rectification filter power supply 2 respectively, the signal can be fed back, the inversion output unit 3 is also electrically connected with the inverter output end 9 by starting the capacitive load control unit 8, and the inverted circuit can be transmitted to the inverter output end 9.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a promote modified sine wave inverter who starts load ability, includes power input end (1), rectification filter unit (2), contravariant output unit (3), starts capacitive load control unit (8) and inverter output (9), its characterized in that: the power input end (1) electric connection has rectification filter unit (2), rectification filter unit (2) electric connection has contravariant output unit (3), contravariant output unit (3) carry out electric connection with output current sampling unit (4) and output voltage sampling unit (6) respectively simultaneously, the output of contravariant output unit (3) carries out electric connection with the input that starts capacitive load control unit (8), the output that starts capacitive load control unit (8) carries out electric connection with the input of dc-to-ac converter output (9).
2. The modified sinewave inverter as claimed in claim 1, wherein the modified sinewave inverter further comprises: the output end of the output current sampling unit (4) is electrically connected with the input ends of the output short circuit detection unit (401) and the output current detection unit (402) at the same time.
3. The modified sine wave inverter of claim 2, wherein: and the output ends of the output short circuit detection unit (401) and the output current detection unit (402) are simultaneously and respectively electrically connected with the input end of the PWM1 control unit (5).
4. The modified sinewave inverter as claimed in claim 1, wherein the modified sinewave inverter further comprises: the output voltage sampling unit (6) is electrically connected with the output voltage reduction detection unit (601) and the output voltage detection unit (602) respectively.
5. The modified sine wave inverter of claim 4, wherein: the output voltage reduction detection unit (601) and the output voltage detection unit (602) are electrically connected with the PWM2 control unit (7) simultaneously and respectively.
6. The modified sine wave inverter of claim 3, wherein: the PWM1 control unit (5) and the PWM2 control unit (7) are simultaneously and respectively electrically connected with the rectifying and filtering unit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922406971.7U CN211830606U (en) | 2019-12-28 | 2019-12-28 | Correction sine wave inverter for improving starting load capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922406971.7U CN211830606U (en) | 2019-12-28 | 2019-12-28 | Correction sine wave inverter for improving starting load capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211830606U true CN211830606U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922406971.7U Active CN211830606U (en) | 2019-12-28 | 2019-12-28 | Correction sine wave inverter for improving starting load capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211830606U (en) |
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2019
- 2019-12-28 CN CN201922406971.7U patent/CN211830606U/en active Active
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