CN203883686U - Single-phase rectification inverter - Google Patents
Single-phase rectification inverter Download PDFInfo
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- CN203883686U CN203883686U CN201420316139.2U CN201420316139U CN203883686U CN 203883686 U CN203883686 U CN 203883686U CN 201420316139 U CN201420316139 U CN 201420316139U CN 203883686 U CN203883686 U CN 203883686U
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Abstract
The utility model discloses a single-phase rectification inverter. A bridge circuit of the single-phase rectification inverter is composed of six diodes, four switching tubes and four solid-state relays. The upper end point and the lower end point of the bridge circuit are connected with an AC-DC power supply; the left end and the right end of the bridge circuit are connected with a load via an LC filter circuit; and an input Hall sensor is connected between the AC-DC power supply and the upper or lower end point of the bridge circuit, and an output Hall sensor is connected between the LC filter circuit and the load. Output ends of the input and output Hall sensors are respectively connected with two input ends of a signal processing unit, an output end of the signal processing unit is connected with control ends of the four solid-state relays simultaneously after being connected with a solid-state relay drive circuit, an output end of the signal processing unit is connected with control ends of the switching tubes a and c simultaneously after being connected with a first field effect transistor drive circuit, and another output end of the signal processing unit is connected with control ends of the switching tubes b and d simultaneously after being connected with a second field effect transistor drive circuit. The single-phase rectification inverter has the advantages of being flexible, intelligent and low in cost.
Description
Technical field
The utility model belongs to field of power electronics, is specifically related to a kind of single-phase rectifier inverter.
Background technology
Rectifier and inverter are widely used in field of power electronics.Rectifier function is that the conversion of the alternating current of input is output as to direct current, and the function of inverter is that the conversion of the direct current of input is output as to alternating current.Independent rectifier and inverter product are a lot, are applied in every field.Yet the two generally separates current rectifier and inverter, function singleness, can only be as rectifier or inverter, occupation mode underaction, and cost is higher, and components and parts are recycling not.
Utility model content
Technical problem to be solved in the utility model conventional rectifier and inverter be independent, function singleness and the high deficiency of cost separately, provide a kind of flexibly, intelligence and the lower single-phase rectifier inverter of cost.
For addressing the above problem, the utility model is achieved through the following technical solutions:
Single-phase rectifier inverter, is mainly comprised of bridge circuit, switching circuit, input Hall element, output Hall element, signal processing unit, the first field effect transistor drive circuit, the second field effect transistor drive circuit, solid-state relay drive circuit and LC filter circuit.
Bridge circuit comprises 6 diode D1～D6; Switching circuit comprises 4 switching tube a～d and 4 solid-state relay S1～S4; The positive pole of the negative pole of diode D1 and diode D4 forms bridge circuit left end point, the emitter of the anodal connecting valve pipe a of diode D1, the collector electrode of the negative pole connecting valve pipe d of diode D4; The positive pole of the negative pole of diode D2 and diode D3 forms bridge circuit right endpoint, the emitter of the anodal connecting valve pipe b of diode D2, the collector electrode of the negative pole connecting valve pipe c of diode D4; The negative pole of the collector electrode of the collector electrode of switching tube a, switching tube b and utmost point pipe D5 forms bridge circuit upper extreme point; The positive pole of the emitter of the emitter of switching tube c, switching tube d and diode D6 forms bridge circuit lower extreme point; The left end point of one end connecting bridge circuit of solid-state relay S1, the other end connects the positive pole of diode D5; The upper extreme point of one end connecting bridge circuit of solid-state relay S2, the other end connects the positive pole of diode D2; The right endpoint of one end connecting bridge circuit of solid-state relay S3, the other end connects the negative pole of diode D6; The lower extreme point of one end connecting bridge circuit of solid-state relay S4, the other end connects the negative pole of diode D4.
The upper extreme point of bridge circuit is connected with DC power supply with AC power with lower extreme point; The left end point of bridge circuit is connected with load through LC filter circuit with right endpoint; Input Hall element is connected between AC power and the upper extreme point or lower extreme point of DC power supply and bridge circuit, and output Hall element is connected between LC filter circuit and load.
Input Hall element is connected with 2 inputs of signal processing unit respectively with the output of output Hall element, one output of signal processing unit connects the control end of 4 solid-state relay S1, S2, S3 and S4 after solid-state relay drive circuit simultaneously, another output of signal processing unit control end of connecting valve pipe a and c simultaneously after the first field effect transistor drive circuit, the another output of signal processing unit control end of connecting valve pipe b and d simultaneously after the second field effect transistor drive circuit.
In such scheme, solid-state relay drive circuit comprises operational amplifier and resistance R 1, R2, Rf; The in-phase input end of operational amplifier connects an output of signal processing unit through resistance R 2; The inverting input of operational amplifier through resistance R 1 and power supply be connected; One end of resistance R _ f is connected with the inverting input of operational amplifier, and the other end is connected with the output of operational amplifier; The output of operational amplifier connects the control end of 4 solid-state relay S1, S2, S3 and S4 simultaneously.
In such scheme, described the first field effect transistor drive circuit comprises field effect pipe driving chip U1, diode D11, capacitor C 1, C2 and resistance R 11; The first port of field effect pipe driving chip U1 connects positive source; The second port of field effect pipe driving chip U1 connects another output of signal processing unit; After the 3rd port of field effect pipe driving chip U1 is connected with the 4th port, the transmitter of its one end connecting valve pipe a and c and power supply ground, the other end connects the positive pole of diode D11 through capacitor C 1; After the five-port of field effect pipe driving chip U1 is connected with the 6th port, through capacitor C 2, be connected with the negative pole of diode D11; The 7th port of field effect pipe driving chip U1 is connected with the base stage of switching tube a and c through resistance R 11; The 8th port of field effect pipe driving chip U1 connects the negative pole of diode D11.
In such scheme, described the second field effect transistor drive circuit comprises field effect pipe driving chip U2, diode D22, capacitor C 12, C22 and resistance R 11; The first port of field effect pipe driving chip U2 connects positive source; The second port of field effect pipe driving chip U2 connects the another output of signal processing unit; After the 3rd port of field effect pipe driving chip U2 is connected with the 4th port, the transmitter of its one end connecting valve pipe b and d and power supply ground, the other end connects the positive pole of diode D22 through capacitor C 12; After the five-port of field effect pipe driving chip U2 is connected with the 6th port, through capacitor C 22, be connected with the negative pole of diode D22; The 7th port of field effect pipe driving chip U2 is connected with the base stage of switching tube b and d through resistance R 11; The 8th port of field effect pipe driving chip U2 connects the negative pole of diode D22.
In such scheme, described 6 diodes are silicon diffused type diode.
In such scheme, described input Hall element and output Hall element are Hall voltage transducer
In such scheme, on described signal processing unit, be also connected to LCD display.
Compared with prior art, the beneficial effects of the utility model are: existing simple rectifier and inverter are improved, both are integrated in a circuit; When input is alternating current, function is rectifier, and output is direct current; When input is direct current, function is inverter, and output is alternating current; Thereby conventional rectifier and inverter function singleness and the high shortcoming of cost have been overcome.The utlity model has diverse in function, flexible, the simple in structure and low cost and other advantages of occupation mode.
Accompanying drawing explanation
Fig. 1 is whole schematic diagram of the present utility model.
Fig. 2 is the utility model circuit diagram.
Fig. 3 is the rectification topological diagram of the utility model circuit.
Fig. 4 is the inversion topological figure of the utility model circuit.
Embodiment
The whole schematic diagram of single-phase rectifier inverter as shown in Figure 1, comprises bridge circuit, switching circuit, testing circuit, filter circuit and signal processing unit.Bridge circuit comprises six silicon diffused type diode D1～D6, switching circuit comprises four HF switch pipe a, b, c, the solid-state relay S1 of d and four Synchronization Control, S2, S3, S4, testing circuit comprises input Hall element and output Hall element, filter circuit comprises inductance L and capacitor C, signal processing unit comprises signal processing unit, corresponding drive circuit and LCD display, signal processing unit is processed controlled signal to testing circuit output signal, control signal acts on switching circuit, the AC rectification of input is become to direct current, or the DC inverter of input is become to alternating current.
As shown in Figure 2, wherein bridge circuit comprises 6 diode D1～D6 to the circuit diagram of single-phase rectifier inverter.Switching circuit comprises 4 switching tube a～d and 4 solid-state relay S1～S4.The positive pole of the negative pole of diode D1 and diode D4 forms bridge circuit left end point, the emitter of the anodal connecting valve pipe a of diode D1, the collector electrode of the negative pole connecting valve pipe d of diode D4.The positive pole of the negative pole of diode D2 and diode D3 forms bridge circuit right endpoint, the emitter of the anodal connecting valve pipe b of diode D2, the collector electrode of the negative pole connecting valve pipe c of diode D4.The negative pole of the collector electrode of the collector electrode of switching tube a, switching tube b and utmost point pipe D5 forms bridge circuit upper extreme point.The positive pole of the emitter of the emitter of switching tube c, switching tube d and diode D6 forms bridge circuit lower extreme point.The left end point of one end connecting bridge circuit of solid-state relay S1, the other end connects the positive pole of diode D5.The upper extreme point of one end connecting bridge circuit of solid-state relay S2, the other end connects the positive pole of diode D2.The right endpoint of one end connecting bridge circuit of solid-state relay S3, the other end connects the negative pole of diode D6.The lower extreme point of one end connecting bridge circuit of solid-state relay S4, the other end connects the negative pole of diode D4.
The upper extreme point of bridge circuit is connected with DC power supply with AC power with lower extreme point; The left end point of bridge circuit is connected with load through LC filter circuit with right endpoint; Input Hall element is connected between AC power and the upper extreme point or lower extreme point of DC power supply and bridge circuit, and output Hall element is connected between LC filter circuit and load.Input Hall element is connected with 2 inputs of signal processing unit respectively with the output of output Hall element, one output of signal processing unit connects the control end of 4 solid-state relay S1, S2, S3 and S4 after solid-state relay drive circuit simultaneously, another output of signal processing unit control end of connecting valve pipe a and c simultaneously after the first field effect transistor drive circuit, the another output of signal processing unit control end of connecting valve pipe b and d simultaneously after the second field effect transistor drive circuit.LCD display is connected on signal processing unit.
Solid-state relay drive circuit comprises operational amplifier and resistance R 1, R2, Rf.The in-phase input end of operational amplifier connects an output of signal processing unit through resistance R 2; The inverting input of operational amplifier through resistance R 1 and power supply be connected; One end of resistance R _ f is connected with the inverting input of operational amplifier, and the other end is connected with the output of operational amplifier; The output of operational amplifier connects the control end of 4 solid-state relay S1, S2, S3 and S4 simultaneously.
Described the first field effect transistor drive circuit comprises field effect pipe driving chip U1, diode D11, capacitor C 1, C2 and resistance R 11.The first port of field effect pipe driving chip U1 connects positive source; The second port of field effect pipe driving chip U1 connects another output of signal processing unit; After the 3rd port of field effect pipe driving chip U1 is connected with the 4th port, the transmitter of its one end connecting valve pipe a and c and power supply ground, the other end connects the positive pole of diode D11 through capacitor C 1; After the five-port of field effect pipe driving chip U1 is connected with the 6th port, through capacitor C 2, be connected with the negative pole of diode D11; The 7th port of field effect pipe driving chip U1 is connected with the base stage of switching tube a and c through resistance R 11; The 8th port of field effect pipe driving chip U1 connects the negative pole of diode D11.
Described the second field effect transistor drive circuit comprises field effect pipe driving chip U2, diode D22, capacitor C 12, C22 and resistance R 11.The first port of field effect pipe driving chip U2 connects positive source; The second port of field effect pipe driving chip U2 connects the another output of signal processing unit; After the 3rd port of field effect pipe driving chip U2 is connected with the 4th port, the transmitter of its one end connecting valve pipe b and d and power supply ground, the other end connects the positive pole of diode D22 through capacitor C 12; After the five-port of field effect pipe driving chip U2 is connected with the 6th port, through capacitor C 22, be connected with the negative pole of diode D22; The 7th port of field effect pipe driving chip U2 is connected with the base stage of switching tube b and d through resistance R 11; The 8th port of field effect pipe driving chip U2 connects the negative pole of diode D22.
Diode D1 negative pole is all connected with left end point with diode D4 positive pole, diode D2 negative pole is all connected with right endpoint with diode D3 positive pole, diode D5 negative pole is connected with upper extreme point, diode D6 is anodal to be connected with lower extreme point, HF switch pipe a and b are responsible for respectively diode D1 and 2 and the break-make of upper extreme point, HF switch pipe c and d are responsible for respectively diode D3 and 4 and the break-make of lower extreme point, Synchronization Control solid-state relay S1 is responsible for the break-make of left end point and diode D5 positive pole, Synchronization Control solid-state relay S2 is responsible for the break-make of upper extreme point and diode D2 positive pole, Synchronization Control solid-state relay S3 is responsible for the break-make of right endpoint and diode D6 negative pole, Synchronization Control solid-state relay S4 is responsible for the break-make of lower extreme point and diode D4 negative pole, inductance L is connected with left end point with right endpoint respectively with capacitor C, form LC filter circuit, connect again load, input Hall element is connected with ac/dc input with lower extreme point, for input voltage, detect, output Hall element is connected with load with left end point, for output voltage, detect.
In bridge circuit, diode adopts silicon diffused type diode, and silicon diffused type diode, because PN junction forward drop is little, is applicable to the situation of large electric current, has increased reliability and useful life.
Input adopts Hall element, and concrete model is CHV-25P, and Hall voltage transducer is the voltage sensor of application Hall effect closed loop principle, can measure interchange and can measure direct current again under electrically isolated condition, to other circuit, disturbs little, simple in structure.
HF switch pipe model is IRF540, adopts IR2125 to drive chip as it, and the D utmost point of IRF540 and the S utmost point are a, b, c, the d in Fig. 1; Solid-state relay adopts direct current control AC type solid-state relay, concrete model is SSR25DA, with isolating device, realized the isolation of control end and load end, solid-state relay SSR25DA has 4 ports, PIN3 and PIN4 are control ends, and PIN1 and PIN2 are controlled switches, if between PIN3 and PIN4 direct voltage at 3V between 32V, controlled switch P IN1 and PIN2 are with regard to conducting, otherwise not conducting; The output signal IN of signal processing unit connects solid-state relay control end through homophase amplifier, and controlled switch is S1, S2, S3, the S4 in Fig. 1.
Signal processing unit is processed (judging the alternating current-direct current type of sampled signal the voltage of input sampling circuit, and input and output sampled signal is compared to computing acquisition pulse-width signal value) controlled signal, be used for control switch circuit, thereby control operating state, realization can be that alternating current or direct current switch to rectification pattern or inverter mode according to input, alternative rectifier and inverter.Signal processing unit adopts the STM32F407 chip of ST Microelectronics, this chip cost performance is high, feature richness, dominant frequency 168MHz, inner FLASH reaches 1MB, multiple ahb bus matrix and multi-channel DMA, have 12 A/D converters and 16 s' pwm signal generator, and pwm signal generator can be exported complementary signal order and control more accurate.
By input Hall element, the amplitude situation of input voltage is given to signal processing unit by out1 mouth and decides the control to switching circuit.By output Hall element, the amplitude situation of output voltage is given to signal processing unit by out2 mouth, signal processing unit sends to LCD display input condition, output situation and work at present in rectification state or the system information of inverter mode and offers user.
If input is that alternating current just needs rectification.Signal processing unit output signal IN Synchronization Control solid-state relay S1, S2, S3, S4 closure, a, b, c, tetra-HF switch pipes of d are all in off-state, bridge circuit is equivalent to single phase bridge type rectifier circu, topological diagram as shown in Figure 3, is just converted to direct current output the alternating current of input after LC filtering.
If input is that direct current just needs inversion.Signal processing unit output signal IN Synchronization Control solid-state relay S1, S2, S3, S4 disconnect simultaneously, and produce 4 road PWM ripples and be given to drive circuit and drive a, b, c, tetra-HF switch pipes of d.Wherein a and c adopt identical PWM1 ripple, and b and d adopt identical PWM2 ripple, and PWM1 and PWM2 complementation, and with dead band, prevent a, b, c, tetra-HF switch pipes of d conducting simultaneously short circuits.At this moment bridge circuit is equivalent to single-phase inversion circuit, and as shown in Figure 4, signal processing unit can the adjustable square wave of generated frequency by controlling the switch of a, b, c, tetra-HF switch pipes of d, by area equivalent principle, after LC filtering, becomes sine wave for topological diagram.The direct current of input is converted to alternating current output.
Claims (7)
1. single-phase rectifier inverter, is characterized in that: mainly bridge circuit, switching circuit, input Hall element, output Hall element, signal processing unit, the first field effect transistor drive circuit, the second field effect transistor drive circuit, solid-state relay drive circuit and LC filter circuit, consist of;
Bridge circuit comprises 6 diode D1～D6; Switching circuit comprises 4 switching tube a～d and 4 solid-state relay S1～S4; The positive pole of the negative pole of diode D1 and diode D4 forms bridge circuit left end point, the emitter of the anodal connecting valve pipe a of diode D1, the collector electrode of the negative pole connecting valve pipe d of diode D4; The positive pole of the negative pole of diode D2 and diode D3 forms bridge circuit right endpoint, the emitter of the anodal connecting valve pipe b of diode D2, the collector electrode of the negative pole connecting valve pipe c of diode D4; The negative pole of the collector electrode of the collector electrode of switching tube a, switching tube b and utmost point pipe D5 forms bridge circuit upper extreme point; The positive pole of the emitter of the emitter of switching tube c, switching tube d and diode D6 forms bridge circuit lower extreme point; The left end point of one end connecting bridge circuit of solid-state relay S1, the other end connects the positive pole of diode D5; The upper extreme point of one end connecting bridge circuit of solid-state relay S2, the other end connects the positive pole of diode D2; The right endpoint of one end connecting bridge circuit of solid-state relay S3, the other end connects the negative pole of diode D6; The lower extreme point of one end connecting bridge circuit of solid-state relay S4, the other end connects the negative pole of diode D4;
The upper extreme point of bridge circuit is connected with DC power supply with AC power with lower extreme point; The left end point of bridge circuit is connected with load through LC filter circuit with right endpoint; Input Hall element is connected between AC power and the upper extreme point or lower extreme point of DC power supply and bridge circuit, and output Hall element is connected between LC filter circuit and load;
Input Hall element is connected with 2 inputs of signal processing unit respectively with the output of output Hall element, one output of signal processing unit connects the control end of 4 solid-state relay S1, S2, S3 and S4 after solid-state relay drive circuit simultaneously, another output of signal processing unit control end of connecting valve pipe a and c simultaneously after the first field effect transistor drive circuit, the another output of signal processing unit control end of connecting valve pipe b and d simultaneously after the second field effect transistor drive circuit.
2. single-phase rectifier inverter according to claim 1, is characterized in that: described solid-state relay drive circuit comprises operational amplifier and resistance R 1, R2, Rf; The in-phase input end of operational amplifier connects an output of signal processing unit through resistance R 2; The inverting input of operational amplifier through resistance R 1 and power supply be connected; One end of resistance R _ f is connected with the inverting input of operational amplifier, and the other end is connected with the output of operational amplifier; The output of operational amplifier connects the control end of 4 solid-state relay S1, S2, S3 and S4 simultaneously.
3. single-phase rectifier inverter according to claim 1, is characterized in that: described the first field effect transistor drive circuit comprises field effect pipe driving chip U1 diode D11, capacitor C 1, C2 and resistance R 11; The first port of field effect pipe driving chip U1 connects positive source; The second port of field effect pipe driving chip U1 connects another output of signal processing unit; After the 3rd port of field effect pipe driving chip U1 is connected with the 4th port, the transmitter of its one end connecting valve pipe a and c and power supply ground, the other end connects the positive pole of diode D11 through capacitor C 1; After the five-port of field effect pipe driving chip U1 is connected with the 6th port, through capacitor C 2, be connected with the negative pole of diode D11; The 7th port of field effect pipe driving chip U1 is connected with the base stage of switching tube a and c through resistance R 11; The 8th port of field effect pipe driving chip U1 connects the negative pole of diode D11.
4. single-phase rectifier inverter according to claim 1, is characterized in that: described the second field effect transistor drive circuit comprises field effect pipe driving chip U2 diode D22, capacitor C 12, C22 and resistance R 11; The first port of field effect pipe driving chip U2 connects positive source; The second port of field effect pipe driving chip U2 connects the another output of signal processing unit; After the 3rd port of field effect pipe driving chip U2 is connected with the 4th port, the transmitter of its one end connecting valve pipe b and d and power supply ground, the other end connects the positive pole of diode D22 through capacitor C 12; After the five-port of field effect pipe driving chip U2 is connected with the 6th port, through capacitor C 22, be connected with the negative pole of diode D22; The 7th port of field effect pipe driving chip U2 is connected with the base stage of switching tube b and d through resistance R 11; The 8th port of field effect pipe driving chip U2 connects the negative pole of diode D22.
5. single-phase rectifier inverter according to claim 1, is characterized in that: described 6 diodes are silicon diffused type diode.
6. single-phase rectifier inverter according to claim 1, is characterized in that: described input Hall element and output Hall element are Hall voltage transducer.
7. single-phase rectifier inverter according to claim 1, is characterized in that: on described signal processing unit, be also connected to LCD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420316139.2U CN203883686U (en) | 2014-06-13 | 2014-06-13 | Single-phase rectification inverter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420316139.2U CN203883686U (en) | 2014-06-13 | 2014-06-13 | Single-phase rectification inverter |
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| CN203883686U true CN203883686U (en) | 2014-10-15 |
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| CN201420316139.2U Expired - Fee Related CN203883686U (en) | 2014-06-13 | 2014-06-13 | Single-phase rectification inverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245515A (en) * | 2018-09-05 | 2019-01-18 | 广西师范大学 | A kind of non-bridge PFC charging circuit and its control algolithm |
-
2014
- 2014-06-13 CN CN201420316139.2U patent/CN203883686U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245515A (en) * | 2018-09-05 | 2019-01-18 | 广西师范大学 | A kind of non-bridge PFC charging circuit and its control algolithm |
| CN109245515B (en) * | 2018-09-05 | 2023-09-26 | 深圳美盈达科技有限公司 | Bridgeless PFC charging circuit and control algorithm thereof |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20150613 |
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| EXPY | Termination of patent right or utility model |