CN104410313A - Inverter system based on low-pass filtering - Google Patents
Inverter system based on low-pass filtering Download PDFInfo
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- CN104410313A CN104410313A CN201410665659.9A CN201410665659A CN104410313A CN 104410313 A CN104410313 A CN 104410313A CN 201410665659 A CN201410665659 A CN 201410665659A CN 104410313 A CN104410313 A CN 104410313A
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- triode
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses an inverter system based on low-pass filtering. The inverter system is composed of a transformer T1, an inverter circuit and a grounding logic control circuit connected with the inverter circuit and is characterized in that a low-pass filtering circuit is arranged between the primary side of the transformer T1 and the logic control circuit; the low-pass filtering circuit is composed of an amplifier P1, a triode VT4, a capacitor C3, a capacitor C4, a resistor R8 and a capacitor C1; the negative electrode of the capacitor C3 is connected with the output end of the amplifier P1 and the positive electrode is connected with the base electrode of the triode VT4; the capacitor C4 is connected in parallel with the capacitor C3; one end of the resistor R8 is connected with the dotted terminal of an electric inductance coil L1 at the primary side of the transformer T1 and the other end is grounded via a resistor R7; the negative electrode of the capacitor C1 is connected with the inverse-phase input end of the amplifier P1 and the positive electrode is connected with the logic control circuit. The low-pass filtering circuit is arranged, so that the inverter system protects electric equipment from being damaged by third harmonic waves when large-load electric equipment is driven.
Description
Technical field
The present invention relates to electronic applications, specifically refer to a kind of inversion system based on low-pass filtering.
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 filtering 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 filtering capacitor of load can be damaged time serious, a kind of inversion system based on low-pass filtering is provided.
The following technical scheme of object of the present invention realizes: based on the inversion system of low-pass filtering, primarily of transformer T1, inverter circuit, the ground connection logic control circuit that is connected with inverter circuit forms, between the former limit and logic control circuit of transformer T1, be also provided with low-pass filter circuit, described low-pass filter circuit is by amplifier P1, triode VT4, negative pole is connected with the output of amplifier P1, the electric capacity C3 that positive pole is connected with the base stage of triode VT4, the electric capacity C4 be in parallel with electric capacity C3, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R8 of other end ground connection after resistance R7, negative pole is connected with the inverting input of amplifier P1, the electric capacity C1 that positive pole andlogic control circuit is connected, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the electric capacity C2 that positive pole is connected with the emitter of triode VT4 after resistance R6 forms, the base stage andlogic control circuit of described triode VT4 is connected, collector electrode is connected with the negative pole of electric capacity C1, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R8 with resistance R7, output is connected with the non-same polarity of transformer primary side inductance coil L1 and logic control circuit simultaneously, the non-same polarity of described transformer primary side inductance coil L1 is connected with the Same Name of Ends of inductance coil L2.
Further, 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 Same Name of Ends of transformer T1 former limit inductance coil L1, launch want ground connection, base stage andlogic control circuit is connected, the N pole of diode D2 is connected with the positive pole of electric capacity 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 and the positive pole of electric capacity C1 simultaneously forms; The base stage of described triode VT2 is connected with the base stage of triode VT1, collector electrode is connected with the non-same polarity of transformer T1 former limit inductance coil L1, emitter is connected with the emitter of triode VT3, and the base stage of triode VT3 is simultaneously with the base stage of triode VT1 and the base stage of triode VT4 is connected, collector electrode is connected with the base stage of triode VT4.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) 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.
(2) 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, the inversion system based on low-pass filtering of the present invention, primarily of transformer T1, inverter circuit, the ground connection logic control circuit that is connected with inverter circuit forms.In order to realize object of the present invention, between the former limit and logic control circuit of transformer T1, be also provided with low-pass filter circuit.
Wherein, low-pass filter circuit is by amplifier P1, triode VT4, negative pole is connected with the output of amplifier P1, the electric capacity C3 that positive pole is connected with the base stage of triode VT4, the electric capacity C4 be in parallel with electric capacity C3, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R8 of other end ground connection after resistance R7, negative pole is connected with the inverting input of amplifier P1, the electric capacity C1 that positive pole andlogic control circuit is connected, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the electric capacity C2 that positive pole is connected with the emitter of triode VT4 after resistance R6 forms, the base stage andlogic control circuit of described triode VT4 is connected, collector electrode is connected with the negative pole of electric capacity C1, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R8 with resistance R7, output is connected with the non-same polarity of transformer primary side inductance coil L1 and logic control circuit simultaneously, the non-same polarity of described transformer primary side inductance coil L1 is connected with the Same Name of Ends of inductance coil L2, and transformer T1 secondary is then as alternating current output.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.
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 Same Name of Ends of transformer T1 former limit inductance coil L1, launch want ground connection, base stage andlogic control circuit is connected, the N pole of diode D2 is connected with the positive pole of electric capacity 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 and the positive pole of electric capacity C1 simultaneously forms; The base stage of described triode VT2 is connected with the base stage of triode VT1, collector electrode is connected with the non-same polarity of transformer T1 former limit inductance coil L1, emitter is connected with the emitter of triode VT3, and the base stage of triode VT3 is simultaneously with the base stage of triode VT1 and the base stage of triode VT4 is connected, collector electrode is connected with the base stage of triode VT4.
As mentioned above, just well the present invention can be realized.
Claims (3)
1. based on the inversion system of low-pass filtering, primarily of transformer T1, inverter circuit, the ground connection logic control circuit that is connected with inverter circuit forms, and it is characterized in that: between the former limit and logic control circuit of transformer T1, be also provided with low-pass filter circuit, described low-pass filter circuit is by amplifier P1, triode VT4, negative pole is connected with the output of amplifier P1, the electric capacity C3 that positive pole is connected with the base stage of triode VT4, the electric capacity C4 be in parallel with electric capacity C3, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R8 of other end ground connection after resistance R7, negative pole is connected with the inverting input of amplifier P1, the electric capacity C1 that positive pole andlogic control circuit is connected, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the electric capacity C2 that positive pole is connected with the emitter of triode VT4 after resistance R6 forms, the base stage andlogic control circuit of described triode VT4 is connected, collector electrode is connected with the negative pole of electric capacity C1, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R8 with resistance R7, output is connected with the non-same polarity of transformer primary side inductance coil L1 and logic control circuit simultaneously, the non-same polarity of described transformer primary side inductance coil L1 is connected with the Same Name of Ends of inductance coil L2.
2. the inversion system based on low-pass filtering 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 Same Name of Ends of transformer T1 former limit inductance coil L1, launch want ground connection, base stage andlogic control circuit is connected, the N pole of diode D2 is connected with the positive pole of electric capacity C1.
3. the inversion system based on low-pass filtering 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 and the positive pole of electric capacity C1 simultaneously forms; The base stage of described triode VT2 is connected with the base stage of triode VT1, collector electrode is connected with the non-same polarity of transformer T1 former limit inductance coil L1, emitter is connected with the emitter of triode VT3, and the base stage of triode VT3 is simultaneously with the base stage of triode VT1 and the base stage of triode VT4 is connected, collector electrode is connected with the base stage of triode VT4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665659.9A CN104410313A (en) | 2014-11-19 | 2014-11-19 | Inverter system based on low-pass filtering |
| CN201510309369.5A CN104901573A (en) | 2014-11-19 | 2015-06-08 | Low-pass-filtering-based pulse amplification type inversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665659.9A CN104410313A (en) | 2014-11-19 | 2014-11-19 | Inverter system based on low-pass filtering |
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| Publication Number | Publication Date |
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| CN104410313A true CN104410313A (en) | 2015-03-11 |
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| CN201410665659.9A Pending CN104410313A (en) | 2014-11-19 | 2014-11-19 | Inverter system based on low-pass filtering |
| CN201510309369.5A Pending CN104901573A (en) | 2014-11-19 | 2015-06-08 | Low-pass-filtering-based pulse amplification type inversion system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510309369.5A Pending CN104901573A (en) | 2014-11-19 | 2015-06-08 | Low-pass-filtering-based pulse amplification type inversion system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883088A (en) * | 2014-11-19 | 2015-09-02 | 成都冠深科技有限公司 | High capacity energy saving inverter based on pulse amplification trigger circuit |
| CN104901573A (en) * | 2014-11-19 | 2015-09-09 | 成都雷克尔科技有限公司 | Low-pass-filtering-based pulse amplification type inversion system |
| CN105729712A (en) * | 2016-03-31 | 2016-07-06 | 成都惠宝节能科技有限公司 | Automatic-control and synchronous paper demounting insulation board forming machine |
| CN106300937A (en) * | 2016-09-27 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of air exhauster drive system high-pass filtering circuit of air purifier |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0085753A1 (en) * | 1982-02-05 | 1983-08-17 | LGZ LANDIS & GYR ZUG AG | System for the transmission of digital signal pulses over the lines of an A.C. distribution network |
| US5256973A (en) * | 1991-06-28 | 1993-10-26 | Michael Thee | Relay tester having a circuit to sense the voltage spihe caused by the armature movement |
| CN202780117U (en) * | 2012-07-05 | 2013-03-13 | 宁波虎兴数控科技有限公司 | Modularization oscillation circuit |
| CN103407462B (en) * | 2013-08-23 | 2015-09-30 | 哈尔滨威克科技有限公司 | Based on the low speed control of dual signal |
| CN103760175A (en) * | 2014-02-08 | 2014-04-30 | 四川环龙技术织物有限公司 | Circuit system for measuring humidity of papermaking felt through microwave technique |
| CN104102263B (en) * | 2014-05-30 | 2015-11-25 | 北京航天自动控制研究所 | A kind of constant-current source circuit of belt current monitoring |
| CN104410313A (en) * | 2014-11-19 | 2015-03-11 | 成都措普科技有限公司 | Inverter system based on low-pass filtering |
-
2014
- 2014-11-19 CN CN201410665659.9A patent/CN104410313A/en active Pending
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2015
- 2015-06-08 CN CN201510309369.5A patent/CN104901573A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883088A (en) * | 2014-11-19 | 2015-09-02 | 成都冠深科技有限公司 | High capacity energy saving inverter based on pulse amplification trigger circuit |
| CN104901573A (en) * | 2014-11-19 | 2015-09-09 | 成都雷克尔科技有限公司 | Low-pass-filtering-based pulse amplification type inversion system |
| CN105729712A (en) * | 2016-03-31 | 2016-07-06 | 成都惠宝节能科技有限公司 | Automatic-control and synchronous paper demounting insulation board forming machine |
| CN106300937A (en) * | 2016-09-27 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of air exhauster drive system high-pass filtering circuit of air purifier |
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| CN104901573A (en) | 2015-09-09 |
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Application publication date: 20150311 |