CN104410314A - Phase-shift processing based low-pass filtering inverter system - Google Patents
Phase-shift processing based low-pass filtering inverter system Download PDFInfo
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- CN104410314A CN104410314A CN201410692753.3A CN201410692753A CN104410314A CN 104410314 A CN104410314 A CN 104410314A CN 201410692753 A CN201410692753 A CN 201410692753A CN 104410314 A CN104410314 A CN 104410314A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
Abstract
The invention discloses a phase-shift processing based low-pass filtering inverter system. The inverter system mainly comprises a transformer T1, an inverter circuit, a logic control circuit and a low-pass filtering circuit, wherein the logic control circuit is connected with the inverter circuit, and the low-pass filtering circuit is connected with a primary side of the transformer T1. The inverter system is characterized in that a phase-shift processing circuit is further arranged between the logic control circuit and the band-pass filtering circuit and comprises a phase-shift chip U1, a triode VT4, a triode VT5, a resistor R7, a polar capacitor C1 and the like, wherein one end of the resistor R7 is connected with a VCC+ pin of the phase-shift chip U1 while the other end of the resistor R7 is connected with an IN1 pin of the phase-shift chip U1, and a cathode of the polar capacitor C1 is connected with the IN1 pin of the phase-shift chip U1 after passing by a resistor R6 while an anode of the polar capacitor C1 is connected with an IN2 pin of the phase-shift chip U1. By the aid of the phase-shift processing circuit, good stability of the inverter system can be kept when the inverter system drives heavy-load electric equipment.
Description
Technical field
The present invention relates to electronic applications, specifically refer to a kind of low-pass filtering inversion system based on phase shift process.
Background technology
Inverter is that direct current energy is transformed into alternating current.It is widely used in air-conditioning, home theater, electric wheel, electric tool, sewing machine, DVD, VCD, computer, TV, washing machine, smoke exhaust ventilator, refrigerator, video tape recorder, massager, fan, illumination etc.Abroad because popularity rate higher the go out work or out on tours and available inverter of automobile connect storage battery drive electrical equipment and various tool work.Output household electrical appliance being connected to power supply changeover device just can use various electrical equipment in automobile.
But when using inverter, because be with load is excessive, the capacity current made in inflow load increases by the triple-frequency harmonics composition comprised in square wave current, can damage the power filter polar capacitor of load time serious.
Summary of the invention
The object of the invention is to overcome current inverter when be with load is excessive, the capacity current made in inflow load increases by the triple-frequency harmonics composition comprised in square wave current, the defect of the power filter polar capacitor of load can be damaged time serious, a kind of low-pass filtering inversion system based on phase shift process is provided.
The following technical scheme of object of the present invention realizes: based on the low-pass filtering inversion system of phase shift process, primarily of transformer T1, inverter circuit, the logic control circuit be connected with inverter circuit, and the low-pass filter circuit to be connected with the former limit of transformer T1 forms, and is also provided with phase shift treatment circuit between logic control circuit and low-pass filter circuit, described phase shift treatment circuit is by phase shift chip U1, triode VT4, triode VT5, one end is connected with the VCC+ pin of phase shift chip U1, the resistance R7 that the other end is connected with the IN1 pin of phase shift chip U1, negative pole is connected with the IN1 pin of phase shift chip U1 after resistance R6, the polar capacitor C1 that positive pole is connected with the IN2 pin of phase shift chip U1, positive pole is connected with the NC pin of phase shift chip U1 after resistance R8, the polar capacitor C3 that negative pole is connected with the collector electrode of triode VT4, positive pole is connected with the OUT pin of phase shift chip U1, the polar capacitor C2 of minus earth, one end is connected with the OUT pin of phase shift chip U1, the potentiometer R9 that the other end is connected with low-pass filter circuit, P pole is connected with the OFF1 pin of phase shift chip U1, the diode D5 that N pole is connected with the base stage of triode VT4, and P pole is connected with the OFF2 pin of phase shift chip U1, the diode D6 that N pole is connected with the emitter of triode VT5 forms, the IN1 pin andlogic control circuit of described phase shift chip U1 is connected, VCC-pin ground connection, OUT pin are connected with the sliding end of potentiometer R9, the emitter of triode VT4 is connected with the base stage of triode VT5, the collector electrode of triode VT5 is connected with low-pass filter circuit, and the negative pole andlogic control circuit of polar capacitor C1 is connected.
Described inverter circuit is by field effect transistor Q1, field effect transistor Q2, triode VT1, the resistance R2 that one end is connected with the drain electrode of field effect transistor Q1, the other end is connected with the collector electrode of triode VT1, the diode D1 that P pole is connected with the drain electrode of field effect transistor Q1 after resistance R1, N pole is connected with the collector electrode of triode VT1, the diode D2 that P pole is connected with the grid of field effect transistor Q2, N pole is connected with the base stage of triode VT1 after resistance R4, and form with the resistance R3 that diode D2 is in parallel; The drain electrode of described field effect transistor Q1 is connected with the drain electrode of field effect transistor Q2 as a galvanic input, source electrode, grid is connected with the collector electrode of triode VT1, the collector electrode of triode VT1 is connected with the IN1 pin of phase shift chip U1, launch want ground connection, base stage andlogic control circuit is connected, the N pole of diode D2 is connected with the negative pole of polar capacitor C1.
Described logic control circuit is by triode VT2, triode VT3, the diode D4 that N pole is connected with the base stage of triode VT2, P pole is connected with the base stage of triode VT3 after diode D3, and the resistance R5 that one end is connected with the P pole of diode D4, the other end is connected with the N pole of diode D2 forms; The base stage of described triode VT2 is connected with the base stage of triode VT1, collector electrode is simultaneously with the IN1 pin of phase shift chip U1 and the collector electrode of triode VT1 is connected, emitter is connected with the emitter of triode VT3, the base stage of triode VT3 is connected with the base stage of triode VT1 simultaneously, collector electrode is connected with the N pole of diode D2 and the negative pole of polar capacitor C1 simultaneously, and the P pole of described diode D4 is connected with the base stage of triode VT1.
Described low-pass filter circuit is by amplifier P1, triode VT6, negative pole is connected with the output of amplifier P1, the polar capacitor C7 that positive pole is connected with the base stage of triode VT6, the polar capacitor C6 be in parallel with polar capacitor C7, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R11 of other end ground connection after resistance R10, negative pole is connected with the inverting input of amplifier P1, the polar capacitor C4 that positive pole is connected with the base stage of triode VT6, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the polar capacitor C5 that positive pole is connected with the emitter of triode VT6 after resistance R12 forms, the base stage of described triode VT6 is connected with the collector electrode of triode VT5, collector electrode is connected with the negative pole of polar capacitor C4, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R11 with resistance R10, output is connected with the non-same polarity of transformer T1 former limit inductance coil L1 and potentiometer R9 simultaneously, the non-same polarity of described transformer T1 former limit inductance coil L1 is connected with the Same Name of Ends of inductance coil L2.
Described phase shift chip U1 is LM741 integrated chip.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention is provided with phase shift treatment circuit, and it makes inversion system also can keep good stability when driving large load power consumption equipment.
(2) the present invention is provided with low-pass filter circuit, makes inversion system when driving heavy load power consumption equipment, and protection power consumption equipment does not damage by triple-frequency harmonics.
(3) structure of the present invention is simple, and energy efficient.Simultaneously passable raising load capacity, meets the demand that high-power electric appliance or multiple-purpose electric appliance use simultaneously.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, low-pass filtering inversion system based on phase shift process of the present invention, primarily of transformer T1, inverter circuit, the logic control circuit be connected with inverter circuit, and the low-pass filter circuit to be connected with the former limit of transformer T1 forms, and is also provided with phase shift treatment circuit between logic control circuit and low-pass filter circuit.
Described phase shift treatment circuit is by phase shift chip U1, triode VT4, triode VT5, one end is connected with the VCC+ pin of phase shift chip U1, the resistance R7 that the other end is connected with the IN1 pin of phase shift chip U1, negative pole is connected with the IN1 pin of phase shift chip U1 after resistance R6, the polar capacitor C1 that positive pole is connected with the IN2 pin of phase shift chip U1, positive pole is connected with the NC pin of phase shift chip U1 after resistance R8, the polar capacitor C3 that negative pole is connected with the collector electrode of triode VT4, positive pole is connected with the OUT pin of phase shift chip U1, the polar capacitor C2 of minus earth, one end is connected with the OUT pin of phase shift chip U1, the potentiometer R9 that the other end is connected with low-pass filter circuit, P pole is connected with the OFF1 pin of phase shift chip U1, the diode D5 that N pole is connected with the base stage of triode VT4, and P pole is connected with the OFF2 pin of phase shift chip U1, the diode D6 that N pole is connected with the emitter of triode VT5 forms, the IN1 pin andlogic control circuit of described phase shift chip U1 is connected, VCC-pin ground connection, OUT pin are connected with the sliding end of potentiometer R9, the emitter of triode VT4 is connected with the base stage of triode VT5, the collector electrode of triode VT5 is connected with low-pass filter circuit, and the negative pole andlogic control circuit of polar capacitor C1 is connected.Phase shift treatment circuit, can make inversion system also can keep good stability when driving large load power consumption equipment.In order to ensure implementation result, described phase shift chip U1 elects LM741 integrated chip as.
Described inverter circuit is by field effect transistor Q1, field effect transistor Q2, triode VT1, the resistance R2 that one end is connected with the drain electrode of field effect transistor Q1, the other end is connected with the collector electrode of triode VT1, the diode D1 that P pole is connected with the drain electrode of field effect transistor Q1 after resistance R1, N pole is connected with the collector electrode of triode VT1, the diode D2 that P pole is connected with the grid of field effect transistor Q2, N pole is connected with the base stage of triode VT1 after resistance R4, and form with the resistance R3 that diode D2 is in parallel; The drain electrode of described field effect transistor Q1 is connected with the drain electrode of field effect transistor Q2 as a galvanic input, source electrode, grid is connected with the collector electrode of triode VT1, the collector electrode of triode VT1 is connected with the IN1 pin of phase shift chip U1, launch want ground connection, base stage andlogic control circuit is connected, the N pole of diode D2 is connected with the negative pole of polar capacitor C1.After direct current input is come in, by the reversion reaction of inverter circuit, converting direct-current power into alternating-current power is exported.
Described logic control circuit is by triode VT2, triode VT3, the diode D4 that N pole is connected with the base stage of triode VT2, P pole is connected with the base stage of triode VT3 after diode D3, and the resistance R5 that one end is connected with the P pole of diode D4, the other end is connected with the N pole of diode D2 forms; The base stage of described triode VT2 is connected with the base stage of triode VT1, collector electrode is simultaneously with the IN1 pin of phase shift chip U1 and the collector electrode of triode VT1 is connected, emitter is connected with the emitter of triode VT3, the base stage of triode VT3 is connected with the base stage of triode VT1 simultaneously, collector electrode is connected with the N pole of diode D2 and the negative pole of polar capacitor C1 simultaneously, and the P pole of described diode D4 is connected with the base stage of triode VT1.
Described low-pass filter circuit is by amplifier P1, triode VT6, negative pole is connected with the output of amplifier P1, the polar capacitor C7 that positive pole is connected with the base stage of triode VT6, the polar capacitor C6 be in parallel with polar capacitor C7, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R11 of other end ground connection after resistance R10, negative pole is connected with the inverting input of amplifier P1, the polar capacitor C4 that positive pole is connected with the base stage of triode VT6, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the polar capacitor C5 that positive pole is connected with the emitter of triode VT6 after resistance R12 forms, the base stage of described triode VT6 is connected with the collector electrode of triode VT5, collector electrode is connected with the negative pole of polar capacitor C4, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R11 with resistance R10, output is connected with the non-same polarity of transformer T1 former limit inductance coil L1 and potentiometer R9 simultaneously, the non-same polarity of described transformer T1 former limit inductance coil L1 is connected with the Same Name of Ends of inductance coil L2.By the effect of low-pass filter circuit, make inversion system when driving heavy load power consumption equipment, protection power consumption equipment does not damage by triple-frequency harmonics.
As mentioned above, just well the present invention can be realized.
Claims (5)
1. based on the low-pass filtering inversion system of phase shift process, primarily of transformer T1, inverter circuit, the logic control circuit be connected with inverter circuit, and the low-pass filter circuit to be connected with the former limit of transformer T1 forms, and it is characterized in that: be also provided with phase shift treatment circuit between logic control circuit and low-pass filter circuit, described phase shift treatment circuit is by phase shift chip U1, triode VT4, triode VT5, one end is connected with the VCC+ pin of phase shift chip U1, the resistance R7 that the other end is connected with the IN1 pin of phase shift chip U1, negative pole is connected with the IN1 pin of phase shift chip U1 after resistance R6, the polar capacitor C1 that positive pole is connected with the IN2 pin of phase shift chip U1, positive pole is connected with the NC pin of phase shift chip U1 after resistance R8, the polar capacitor C3 that negative pole is connected with the collector electrode of triode VT4, positive pole is connected with the OUT pin of phase shift chip U1, the polar capacitor C2 of minus earth, one end is connected with the OUT pin of phase shift chip U1, the potentiometer R9 that the other end is connected with low-pass filter circuit, P pole is connected with the OFF1 pin of phase shift chip U1, the diode D5 that N pole is connected with the base stage of triode VT4, and P pole is connected with the OFF2 pin of phase shift chip U1, the diode D6 that N pole is connected with the emitter of triode VT5 forms, the IN1 pin andlogic control circuit of described phase shift chip U1 is connected, VCC-pin ground connection, OUT pin are connected with the sliding end of potentiometer R9, the emitter of triode VT4 is connected with the base stage of triode VT5, the collector electrode of triode VT5 is connected with low-pass filter circuit, and the negative pole andlogic control circuit of polar capacitor C1 is connected.
2. the low-pass filtering inversion system based on phase shift process according to claim 1, it is characterized in that: described inverter circuit is by field effect transistor Q1, field effect transistor Q2, triode VT1, one end is connected with the drain electrode of field effect transistor Q1, the resistance R2 that the other end is connected with the collector electrode of triode VT1, P pole is connected with the drain electrode of field effect transistor Q1 after resistance R1, the diode D1 that N pole is connected with the collector electrode of triode VT1, P pole is connected with the grid of field effect transistor Q2, the diode D2 that N pole is connected with the base stage of triode VT1 after resistance R4, and form with the resistance R3 that diode D2 is in parallel, the drain electrode of described field effect transistor Q1 is connected with the drain electrode of field effect transistor Q2 as a galvanic input, source electrode, grid is connected with the collector electrode of triode VT1, the collector electrode of triode VT1 is connected with the IN1 pin of phase shift chip U1, launch want ground connection, base stage andlogic control circuit is connected, the N pole of diode D2 is connected with the negative pole of polar capacitor C1.
3. the low-pass filtering inversion system based on phase shift process according to claim 2, it is characterized in that: described logic control circuit is by triode VT2, triode VT3, the diode D4 that N pole is connected with the base stage of triode VT2, P pole is connected with the base stage of triode VT3 after diode D3, and the resistance R5 that one end is connected with the P pole of diode D4, the other end is connected with the N pole of diode D2 forms; The base stage of described triode VT2 is connected with the base stage of triode VT1, collector electrode is simultaneously with the IN1 pin of phase shift chip U1 and the collector electrode of triode VT1 is connected, emitter is connected with the emitter of triode VT3, the base stage of triode VT3 is connected with the base stage of triode VT1 simultaneously, collector electrode is connected with the N pole of diode D2 and the negative pole of polar capacitor C1 simultaneously, and the P pole of described diode D4 is connected with the base stage of triode VT1.
4. the low-pass filtering inversion system based on phase shift process according to claim 3, it is characterized in that: described low-pass filter circuit is by amplifier P1, triode VT6, negative pole is connected with the output of amplifier P1, the polar capacitor C7 that positive pole is connected with the base stage of triode VT6, the polar capacitor C6 be in parallel with polar capacitor C7, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R11 of other end ground connection after resistance R10, negative pole is connected with the inverting input of amplifier P1, the polar capacitor C4 that positive pole is connected with the base stage of triode VT6, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the polar capacitor C5 that positive pole is connected with the emitter of triode VT6 after resistance R12 forms, the base stage of described triode VT6 is connected with the collector electrode of triode VT5, collector electrode is connected with the negative pole of polar capacitor C4, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R11 with resistance R10, output is connected with the non-same polarity of transformer T1 former limit inductance coil L1 and potentiometer R9 simultaneously, the non-same polarity of described transformer T1 former limit inductance coil L1 is connected with the Same Name of Ends of inductance coil L2.
5. the low-pass filtering inversion system based on phase shift process according to any one of Claims 1 to 4, is characterized in that: described phase shift chip U1 is LM741 integrated chip.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692753.3A CN104410314A (en) | 2014-11-26 | 2014-11-26 | Phase-shift processing based low-pass filtering inverter system |
| CN201510307234.5A CN104836468A (en) | 2014-11-26 | 2015-06-06 | Low pass filtering inversion system based on capacitance feedback three-point oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692753.3A CN104410314A (en) | 2014-11-26 | 2014-11-26 | Phase-shift processing based low-pass filtering inverter system |
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| CN104410314A true CN104410314A (en) | 2015-03-11 |
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| CN201410692753.3A Pending CN104410314A (en) | 2014-11-26 | 2014-11-26 | Phase-shift processing based low-pass filtering inverter system |
| CN201510307234.5A Pending CN104836468A (en) | 2014-11-26 | 2015-06-06 | Low pass filtering inversion system based on capacitance feedback three-point oscillation circuit |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510307234.5A Pending CN104836468A (en) | 2014-11-26 | 2015-06-06 | Low pass filtering inversion system based on capacitance feedback three-point oscillation circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792381A (en) * | 2015-04-13 | 2015-07-22 | 成都诚邦动力测试仪器有限公司 | Phase shifting type engine oil consumption detecting system |
| CN104836468A (en) * | 2014-11-26 | 2015-08-12 | 成都冠深科技有限公司 | Low pass filtering inversion system based on capacitance feedback three-point oscillation circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203964222U (en) * | 2014-06-04 | 2014-11-26 | 三亚江大科技发展有限公司 | A kind of new and effective spray cooling device |
| CN104410314A (en) * | 2014-11-26 | 2015-03-11 | 成都创图科技有限公司 | Phase-shift processing based low-pass filtering inverter system |
-
2014
- 2014-11-26 CN CN201410692753.3A patent/CN104410314A/en active Pending
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2015
- 2015-06-06 CN CN201510307234.5A patent/CN104836468A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836468A (en) * | 2014-11-26 | 2015-08-12 | 成都冠深科技有限公司 | Low pass filtering inversion system based on capacitance feedback three-point oscillation circuit |
| CN104792381A (en) * | 2015-04-13 | 2015-07-22 | 成都诚邦动力测试仪器有限公司 | Phase shifting type engine oil consumption detecting system |
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| CN104836468A (en) | 2015-08-12 |
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Application publication date: 20150311 |