CN105610310A - Frequency converter drive circuit and short-circuit detection method therefor - Google Patents
Frequency converter drive circuit and short-circuit detection method therefor Download PDFInfo
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- CN105610310A CN105610310A CN201511000316.1A CN201511000316A CN105610310A CN 105610310 A CN105610310 A CN 105610310A CN 201511000316 A CN201511000316 A CN 201511000316A CN 105610310 A CN105610310 A CN 105610310A
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from AC input or output
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- 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
- H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC
- H02M5/42—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention provides a frequency converter drive circuit, which comprises a multi-path pulse rectifier module, a three-level inverter module and a harmonic suppression module, wherein the three-level inverter module and the harmonic suppression module are electrically connected with the multi-path pulse rectifier module; and the harmonic suppression module is electrically connected between the multi-path pulse rectifier module and the three-level inverter module and is used for filtering out a harmonic signal comprised in an output signal of the multi-path pulse rectifier module. The invention further provides a short-circuit detection method for the frequency converter drive circuit. The frequency converter drive circuit and the short-circuit detection method for the frequency converter drive circuit can suppress the harmonic wave on a rectifier side of the frequency converter drive circuit, so that the power factor of the overall circuit is improved; and whether the rectifier side is in a short circuit or not can be judged in real time.
Description
Technical field
The present invention relates to transducer drive circuit, relate in particular to a kind of frequency converter that comprises twelve-pulse rectification and driveMoving circuit.
Background technology
In the multiple speed regulating method of alternating current generator, frequency conversion speed-adjusting system is because flatness is good when its speed governing, efficiencyHigh, relative stability is good, speed adjustable range is large, precision advantages of higher, be widely used in recent years. WithConverter technology to high pressure, high-power development, three-level NPC inverter topological structure, due to itThere is the acceptance that good systematic function is more and more subject to people. Employing three-level NPC inverter topologyThe high-voltage high-power frequency transformator of connecting structure is often for the performance that improves rectification side adopts twelve-pulse rectification or mid pointClamping type three-level PWM rectifier.
Its rectification side mid point of the three-level converter of the twelve-pulse rectification of prior art is direct and inversion side oftenMid point is connected, and as shown in Figure 1, the harmonic wave of its rectification side is larger, and then power factor can not obtain effectivelyPromote. Therefore be necessary to propose a kind of follow-on transducer drive circuit and overcome above-mentioned defect.
Summary of the invention
The object of the invention is to, a kind of transducer drive circuit is provided, the harmonic wave that it can suppress rectification side, entersAnd raising power factor.
Another object of the present invention is to, a kind of transducer drive short circuit detection method is provided, it can detectWhether rectification side is short-circuited.
To achieve these goals, an embodiment of the present invention provides a kind of transducer drive circuit, for frequency conversionIn device, the tri-level inversion mould that comprises multiplex pulse rectification module, is electrically connected with described multiplex pulse rectification modulePiece and harmonic wave suppress module. Described harmonic wave suppresses module and is electrically connected on described multiplex pulse rectification module and described threeBetween level inverse conversion module, the harmonic wave letter comprising for the output signal of multiplex pulse rectification module described in filteringNumber.
Preferably, described harmonic wave suppresses module and comprises that first harmonic suppresses unit and second harmonic suppresses unit, instituteThe first end of stating first harmonic inhibition unit is electrically connected on the middle-end of described multiplex pulse rectification module, described firstThe second end that harmonic wave suppresses unit is electrically connected on the first end that described second harmonic suppresses unit, described second harmonicThe second end that suppresses unit is electrically connected on the middle-end of described tri-level inversion module, and described second harmonic suppresses unitThe 3rd end be electrically connected on of the first end of described multiplex pulse rectification module and described tri-level inversion moduleOne end, the 4th end of described second harmonic inhibition unit is electrically connected on the second end of described multiplex pulse rectification moduleAnd the second end of described tri-level inversion module.
Preferably, described first harmonic suppresses unit and comprises the first electric capacity, the first resistance and adjustable resistance, described inOne end of the first electric capacity is electrically connected on the middle-end of described multiplex pulse rectification module, the other end of described the first electric capacityBe electrically connected on described the first resistance, the other end of described the first resistance is electrically connected on described second harmonic and suppresses unitOne end, one end of described adjustable resistance is electrically connected on the middle-end of described multiplex pulse rectification module, described adjustableThe other end of resistance is electrically connected on one end that described second harmonic suppresses unit.
Preferably, described second harmonic suppresses unit and comprises the second electric capacity, the 3rd electric capacity, the second resistance, the 3rdResistance and the 4th resistance, one end of described the second resistance is electrically connected on the first end of described multiplex pulse rectification moduleAnd the first end of described tri-level inversion module, the other end of described the second resistance is electrically connected on described the second electric capacityOne end, the other end of described the second electric capacity be electrically connected on described first harmonic suppress unit the other end and described inOne end of the 3rd electric capacity, the other end of described the 3rd electric capacity is electrically connected on one end of described the 3rd resistance, and describedThe other end of three resistance is electrically connected on the second end and the described tri-level inversion mould of described multiplex pulse rectification moduleThe second end of piece, one end of described the 4th resistance is electrically connected on the other end that described first harmonic suppresses unit, instituteThe other end of stating the 4th resistance is electrically connected on the middle-end of described tri-level inversion module.
Preferably, described transducer drive circuit also comprises short-circuit detecting module, is electrically connected on described first harmonicSuppress unit, suppress the potential difference between first end and second end of unit for detecting described first harmonic, withJudge whether described multiplex pulse rectification module exists short circuit.
Preferably, described short-circuit detecting module comprises the pressure unit, rectification unit, the comparison that are connected in series successivelyUnit and display unit, described pressure unit carries out for the potential difference that described first harmonic is suppressed to two ends, unitStep-down processing, described rectification unit is for carrying out rectification, described comparison to the signal of telecommunication of described pressure unit outputUnit is for the signal of telecommunication after rectification and predetermined threshold value are compared, and described display unit is used for according to described ratioCarry out output short-circuit index signal compared with the compare result signal of unit.
Preferably, described pressure unit comprises the 5th resistance, the 6th resistance, the 7th resistance and the first amplifier,One end of described the 5th resistance is electrically connected on the first end that described first harmonic suppresses unit, described the 5th resistanceThe other end is electrically connected on the reverse input end of described the first amplifier, and one end of described the 6th resistance is electrically connected on instituteState the second end that first harmonic suppresses unit, the other end of described the 6th resistance is electrically connected on described the first amplifierPositive input, the output of described the first amplifier is electrically connected on described rectification unit, described the 7th resistanceBe electrically connected between the reverse input end and output of described the first amplifier.
Preferably, described rectification unit comprise the first diode, the second diode, the 8th resistance, the 9th resistance,The tenth resistance and the second amplifier, the positive pole of described the first diode is electrically connected on described pressure unit, and describedThe negative electricity of one diode is connected in one end of described the 8th resistance, and the other end of described the 8th resistance is electrically connected onThe reverse input end of described the second amplifier, the negative electricity of described the second diode is connected in described the first diodePositive pole, the positive pole of described the second diode is electrically connected on one end of described the 9th resistance, described the 9th resistanceThe other end is electrically connected on the positive input of described the second amplifier, the output electrical connection of described the second amplifierIn described comparing unit, described the tenth resistance is electrically connected on reverse input end and the output of described the second amplifierBetween.
Preferably, described comparing unit comprises hysteresis comparator, and described display unit comprises light emitting diode.
An embodiment of the present invention also provides a kind of transducer drive short circuit detection method, drives for frequency converterIn moving circuit, described transducer drive circuit comprise multiplex pulse rectification module and with described multiplex pulse rectification mouldThe tri-level inversion module of piece electrical connection, the first end of described multiplex pulse rectification module is electrically connected on described three electricityThe first end of flat inversion module, the second end of described multiplex pulse rectification module is electrically connected on described tri-level inversionThe second end of module, the middle-end of described multiplex pulse rectification module be electrically connected on described tri-level inversion module inEnd. Described transducer drive short circuit detection method comprises the following steps: detect described multiplex pulse rectification mouldPotential difference between the middle-end of the middle-end of piece and described tri-level inversion module and with predetermined threshold value comparison, to judgeWhether described transducer drive circuit there is short circuit.
Beneficial effect of the present invention: the invention provides a kind of transducer drive circuit and method for detecting short circuit thereof, press downThe harmonic wave of transducer drive circuit rectification side processed, and then the power factor of raising drive circuit, simultaneously can also be realIn time, is detected and shows whether rectification side is short-circuited.
In order further to understand feature of the present invention and technology contents, refer to following relevant of the present inventionDescribe in detail and accompanying drawing, but accompanying drawing only provides reference and explanation use, is not used for the present invention to be limited.
Brief description of the drawings
Fig. 1 is the circuit diagram of transducer drive circuit in prior art one embodiment;
Fig. 2 is the module map of transducer drive circuit in an embodiment of the present invention;
Fig. 3 is the module map of transducer drive circuit in another embodiment of the present invention;
Fig. 4 is the circuit diagram of transducer drive circuit in an embodiment of the present invention;
Fig. 5 is the circuit diagram of short circuit detection module in an embodiment of the present invention.
Detailed description of the invention
Technological means and the effect thereof taked for further setting forth the present invention, below in conjunction with of the present invention preferredEmbodiment and accompanying drawing thereof are described in detail.
Fig. 2 is the module map of transducer drive circuit 100 in an embodiment of the present invention. Transducer drive circuit100 can use in frequency converter. In the present embodiment, transducer drive circuit 100 comprises multiplex pulseRectification module 1, the tri-level inversion module 2 being electrically connected with multiplex pulse rectification module 1 and harmonic wave suppress module3. Harmonic wave suppresses module 3 and is electrically connected between multiplex pulse rectification module 1 and tri-level inversion module 2, humorousRipple suppresses the harmonic signal that module 3 comprises for the output signal of filtering multiplex pulse rectification module 1, to keep awayThe harmonic signal of exempting to comprise in impulse commutation module 1 causes interference to tri-level inversion module 2, affects frequency conversionThe power factor of device drive circuit 100. In the present embodiment, multiplex pulse rectification module 1 is preferably 12Road impulse commutation module, it comprises 12 commutation diodes.
Please refer to Fig. 3 and Fig. 4, in an embodiment of the present invention, harmonic wave suppresses module 3 and comprises firstHarmonic wave suppresses unit 31 and second harmonic suppresses unit 32. First harmonic suppresses the first end electrical connection of unit 31In the middle-end of multiplex pulse rectification module 1, first harmonic suppresses the second end of unit 31 and is electrically connected on second humorousRipple suppresses the first end of unit 32, and the second end that second harmonic suppresses unit 32 is electrically connected on tri-level inversion mouldThe middle-end of piece 2, second harmonic suppresses the 3rd end of unit 32 and is electrically connected on the of multiplex pulse rectification module 1The first end of one end and tri-level inversion module 2, the 4th end that second harmonic suppresses unit 32 is electrically connected on manyThe second end of road impulse commutation module 1 and the second end of tri-level inversion module 2. In the present embodiment, threeThe first end of level inverse conversion module 2 and the second end be respectively transducer drive circuit 100 first voltage output ends withSecond voltage output.
In an embodiment of the present invention, first harmonic suppresses unit 31 and comprises the first capacitor C 1, the first resistanceR1 and adjustable resistance RX1. One end of the first capacitor C 1 is electrically connected on the middle-end of multiplex pulse rectification module 1,The other end of the first capacitor C 1 is electrically connected on first resistance R 1, the first resistance R 1 other end and is electrically connected on second humorousRipple suppresses one end of unit 32, one end of adjustable resistance RX1 be electrically connected on multiplex pulse rectification module 1 inEnd, the other end of adjustable resistance RX1 is electrically connected on one end that second harmonic suppresses unit 32. Second harmonic presses downUnit 32 processed comprises the second capacitor C 2, the 3rd capacitor C 3, the second resistance R 2, the 3rd resistance R 3 and the 4th electricityResistance R4. One end of the second resistance R 2 is electrically connected on first end and the tri-level inversion of multiplex pulse rectification module 1The first end of module 2, the other end of the second resistance R 2 is electrically connected on one end of the second capacitor C 2, the second electric capacityThe other end of C2 is electrically connected on the other end of the first resistance R 1 and one end of the 3rd capacitor C 3, the 3rd capacitor C 3The other end be electrically connected on one end of the 3rd resistance R 3, the other end of the 3rd resistance R 3 is electrically connected on multiplex pulseThe second end of rectification module 1 and the second end of tri-level inversion module 2, one end electrical connection of the 4th resistance R 4In the other end of the first resistance R 1, the other end of the 4th resistance R 4 be electrically connected on tri-level inversion module 2 inEnd. In the present embodiment, multiplex pulse rectification module 1 comprises 2 Dui Liu road impulse commutation circuit, 2 pairs sixThe common port of road impulse commutation circuit is the middle-end of multiplex pulse rectification module 1, and all the other two ends are respectively multichannel arteries and veinsRush first end, second end of rectification module 1. Transducer drive circuit 100 suppresses unit 31 by first harmonicAnd second harmonic suppress unit 32 realize the harmonic wave that filtering multiplex pulse rectification module 1 output comprises,Improve the power factor of integrated circuit.
As to further improvement of the present invention, transducer drive circuit 100 also comprises short-circuit detecting module 4,Short-circuit detecting module 4 is electrically connected on first harmonic and suppresses unit 31, suppresses unit 31 for detecting first harmonicFirst end and the second end between potential difference, thereby and compare and judge that multiplex pulse is whole with predetermined threshold valueWhether flow module 1 there is short circuit. In the present embodiment, short-circuit detecting module 4 is for detecting adjustable resistance RX1The voltage at two ends, thus and compare with predetermined threshold value that to judge whether multiplex pulse rectification module 1 exists shortRoad.
In an embodiment of the present invention, short-circuit detecting module 4 comprise the pressure unit 41 that is connected in series successively,Rectification unit 42, comparing unit 43 and display unit 44. Pressure unit 41 is for suppressing single to first harmonicThe potential difference at unit 31 (that is adjustable resistance RX1) two ends is carried out step-down processing, and rectification unit 42 is for to step-downThe signal of telecommunication that unit 41 is exported carries out rectification, and comparing unit 43 is for by the signal of telecommunication after rectification and predetermined threshold valueCompare, display unit 44 is for carrying out output short-circuit indication letter according to the compare result signal of comparing unit 43Number.
Please refer to Fig. 5, in an embodiment of the present invention, pressure unit 41 comprise the 5th resistance R 5,The 6th resistance R 6, the 7th resistance R 7 and the first amplifier OP1. One end of the 5th resistance R 5 is electrically connected on adjustableOne end of resistance R X1, the other end of the 5th resistance R 5 is electrically connected on the reverse input end of the first amplifier OP1,One end of the 6th resistance R 6 is electrically connected on the other end of adjustable resistance RX1, and the other end of the 6th resistance R 6 is electrically connectedBe connected to the positive input of the first amplifier OP1, the output of the first amplifier OP1 is electrically connected on rectification unit42, the seven resistance R 7 are electrically connected between the reverse input end and output of the first amplifier OP1. Rectification listUnit 42 comprises the first diode D1, the second diode D2, the 8th resistance R 8, the 9th resistance R 9, the tenth electricityResistance R10 and the second amplifier OP2. The positive pole of the first diode D1 is electrically connected on the output of the first amplifier OP1End, the negative electricity of the first diode D1 is connected in one end of the 8th resistance R 8, the other end of the 8th resistance R 8Be electrically connected on the reverse input end of the second amplifier OP2, the negative electricity of the second diode D2 is connected in the one or twoThe positive pole of utmost point pipe D1, the positive pole of the second diode D2 is electrically connected on one end of the 9th resistance R 9, the 9th resistanceThe other end of R9 is electrically connected on the positive input of the second amplifier OP2, the output electricity of the second amplifier OP2Be connected in reverse input end and output that comparing unit 43, the ten resistance R 10 are electrically connected on the second amplifier OP2Between end. Comparing unit 43 comprises hysteresis comparator OP3, can avoid it by hysteresis comparator OP3 is setRepeatedly changing appears in output end signal. Display unit 44 comprises light emitting diode, is used to indicate the defeated of comparatorGo out result, with output short-circuit index signal.
In an embodiment of the present invention, also introduce a kind of transducer drive short circuit detection method, this frequency converterDrive circuit method for detecting short circuit is for transducer drive circuit 100, and this transducer drive short circuit detectsMethod comprises the following steps: the middle-end of detecting multiplex pulse rectification module 1 and the middle-end of tri-level inversion module 2Between potential difference and with predetermined threshold value comparison, and judge transducer drive circuit according to compare result signalWhether 100 be short-circuited.
In sum, the invention provides a kind of transducer drive circuit and method for detecting short circuit thereof, suppress frequency converterThe harmonic wave of drive circuit rectification side, and then the power factor of raising drive circuit can also detect also simultaneously in real timeShow whether rectification side is short-circuited.
The above, for the person of ordinary skill of the art, can be according to technical scheme of the present invention andTechnical conceive is made other various corresponding changes and distortion, and all these changes and distortion all should belong to thisThe protection domain of bright claim.
Claims (10)
1. a transducer drive circuit, for frequency converter, comprises multiplex pulse rectification module and with describedThe tri-level inversion module of multiplex pulse rectification module electrical connection, is characterized in that described multiplex pulse rectification mouldPiece also comprises that harmonic wave suppresses module, is electrically connected on described multiplex pulse rectification module and described tri-level inversion moduleBetween, the harmonic signal comprising for the output signal of multiplex pulse rectification module described in filtering.
2. transducer drive circuit as claimed in claim 1, is characterized in that, described harmonic wave suppresses module bagDraw together first harmonic and suppress unit and second harmonic inhibition unit, the first end that described first harmonic suppresses unit is electrically connectedBe connected to the middle-end of described multiplex pulse rectification module, the second end that described first harmonic suppresses unit is electrically connected on instituteState the first end that second harmonic suppresses unit, the second end that described second harmonic suppresses unit is electrically connected on described threeThe middle-end of level inverse conversion module, it is whole that the 3rd end of described second harmonic inhibition unit is electrically connected on described multiplex pulseThe first end of the first end of flow module and described tri-level inversion module, described second harmonic suppresses the 4th of unitEnd is electrically connected on the second end of described multiplex pulse rectification module and the second end of described tri-level inversion module.
3. transducer drive circuit as claimed in claim 2, is characterized in that, it is single that described first harmonic suppressesUnit comprises the first electric capacity, the first resistance and adjustable resistance, and one end of described the first electric capacity is electrically connected on described multichannelThe middle-end of impulse commutation module, the other end of described the first electric capacity is electrically connected on described the first resistance, described firstThe other end of resistance is electrically connected on one end that described second harmonic suppresses unit, and one end of described adjustable resistance is electrically connectedBe connected to the middle-end of described multiplex pulse rectification module, the other end of described adjustable resistance is electrically connected on described second humorousRipple suppresses one end of unit.
4. transducer drive circuit as claimed in claim 2, is characterized in that, described second harmonic suppressesUnit comprises the second electric capacity, the 3rd electric capacity, the second resistance, the 3rd resistance and the 4th resistance, described the second resistanceOne end be electrically connected on first of the first end of described multiplex pulse rectification module and described tri-level inversion moduleEnd, the other end of described the second resistance is electrically connected on one end of described the second electric capacity, another of described the second electric capacityEnd is electrically connected on described first harmonic and suppresses the other end of unit and one end of described the 3rd electric capacity, described the 3rd electricityThe other end holding is electrically connected on one end of described the 3rd resistance, described in the other end of described the 3rd resistance is electrically connected onThe second end of multiplex pulse rectification module and the second end of described tri-level inversion module, one of described the 4th resistanceEnd is electrically connected on the other end that described first harmonic suppresses unit, and the other end of described the 4th resistance is electrically connected on instituteState the middle-end of tri-level inversion module.
5. transducer drive circuit as claimed in claim 2, is characterized in that, also comprises short-circuit detecting mouldPiece, is electrically connected on described first harmonic and suppresses unit, suppresses the first end of unit for detecting described first harmonicAnd the potential difference between the second end, to judge whether described multiplex pulse rectification module exists short circuit.
6. transducer drive circuit as claimed in claim 5, is characterized in that, described short-circuit detecting moduleComprise the pressure unit, rectification unit, comparing unit and the display unit that are connected in series successively, described pressure unitCarry out step-down processing for the potential difference that described first harmonic is suppressed to two ends, unit, described rectification unit is for rightThe signal of telecommunication of described pressure unit output carries out rectification, and described comparing unit is used for the signal of telecommunication after rectification with pre-If threshold value compares, described display unit is for exporting short according to the compare result signal of described comparing unitRoad index signal.
7. transducer drive circuit as claimed in claim 6, is characterized in that, described pressure unit comprisesThe 5th resistance, the 6th resistance, the 7th resistance and the first amplifier, one end of described the 5th resistance is electrically connected on instituteState the first end that first harmonic suppresses unit, the other end of described the 5th resistance is electrically connected on described the first amplifierReverse input end, one end of described the 6th resistance is electrically connected on the second end that described first harmonic suppresses unit,The other end of described the 6th resistance is electrically connected on the positive input of described the first amplifier, described the first amplifierOutput be electrically connected on described rectification unit, described the 7th resistance be electrically connected on described the first amplifier oppositelyBetween input and output.
8. transducer drive circuit as claimed in claim 6, is characterized in that, described rectification unit comprisesThe first diode, the second diode, the 8th resistance, the 9th resistance, the tenth resistance and the second amplifier, described inThe positive pole of the first diode is electrically connected on described pressure unit, described in the negative electricity of described the first diode is connected inOne end of the 8th resistance, the other end of described the 8th resistance is electrically connected on the reverse input of described the second amplifierEnd, the negative electricity of described the second diode is connected in the positive pole of described the first diode, described the second diodePositive pole is electrically connected on one end of described the 9th resistance, and the other end of described the 9th resistance is electrically connected on described second and putsThe positive input of large device, the output of described the second amplifier is electrically connected on described comparing unit, and the described the tenthResistance is electrically connected between the reverse input end and output of described the second amplifier.
9. transducer drive circuit as claimed in claim 6, is characterized in that, described comparing unit comprisesHysteresis comparator, described display unit comprises light emitting diode.
10. a transducer drive short circuit detection method, for transducer drive circuit, described frequency conversionThree level that device drive circuit comprises multiplex pulse rectification module and is electrically connected with described multiplex pulse rectification moduleInversion module, the first end of described multiplex pulse rectification module is electrically connected on first of described tri-level inversion moduleEnd, the second end of described multiplex pulse rectification module is electrically connected on the second end of described tri-level inversion module, instituteThe middle-end of stating multiplex pulse rectification module is electrically connected on the middle-end of described tri-level inversion module, it is characterized in that,Described transducer drive short circuit detection method comprises the following steps: detect described multiplex pulse rectification modulePotential difference between the middle-end of middle-end and described tri-level inversion module and with predetermined threshold value comparison, described in judgingWhether transducer drive circuit there is short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000316.1A CN105610310B (en) | 2015-12-28 | 2015-12-28 | Transducer drive circuit and its method for detecting short circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000316.1A CN105610310B (en) | 2015-12-28 | 2015-12-28 | Transducer drive circuit and its method for detecting short circuit |
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| CN105610310A true CN105610310A (en) | 2016-05-25 |
| CN105610310B CN105610310B (en) | 2018-12-21 |
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| WO2001069770A1 (en) * | 2000-03-17 | 2001-09-20 | Daikin Industries, Ltd. | Three-phase rectifier |
| CN2708565Y (en) * | 2004-06-17 | 2005-07-06 | 靖江市苏园科研电器有限公司 | Power current type passive static filter |
| CN201057634Y (en) * | 2006-02-23 | 2008-05-07 | 国电南京自动化股份有限公司 | Three power level integrated intermediate and high voltage frequency convertor |
| CN201323531Y (en) * | 2008-12-29 | 2009-10-07 | 郑州电力机械厂 | 6KV high-voltage transducer directly composed of three-level H-bridge power unit module |
| CN203368336U (en) * | 2013-08-08 | 2013-12-25 | 浙江海利普电子科技有限公司 | Frequency converter |
| US8942019B2 (en) * | 2011-11-01 | 2015-01-27 | Fairchild Korea Semiconductor Ltd. | Current vector controlled deadtime for multilevel inverters |
| CN205453482U (en) * | 2015-12-28 | 2016-08-10 | 深圳市库马克新技术股份有限公司 | Converter drive circuit |
-
2015
- 2015-12-28 CN CN201511000316.1A patent/CN105610310B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001069770A1 (en) * | 2000-03-17 | 2001-09-20 | Daikin Industries, Ltd. | Three-phase rectifier |
| CN2708565Y (en) * | 2004-06-17 | 2005-07-06 | 靖江市苏园科研电器有限公司 | Power current type passive static filter |
| CN201057634Y (en) * | 2006-02-23 | 2008-05-07 | 国电南京自动化股份有限公司 | Three power level integrated intermediate and high voltage frequency convertor |
| CN201323531Y (en) * | 2008-12-29 | 2009-10-07 | 郑州电力机械厂 | 6KV high-voltage transducer directly composed of three-level H-bridge power unit module |
| US8942019B2 (en) * | 2011-11-01 | 2015-01-27 | Fairchild Korea Semiconductor Ltd. | Current vector controlled deadtime for multilevel inverters |
| CN203368336U (en) * | 2013-08-08 | 2013-12-25 | 浙江海利普电子科技有限公司 | Frequency converter |
| CN205453482U (en) * | 2015-12-28 | 2016-08-10 | 深圳市库马克新技术股份有限公司 | Converter drive circuit |
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| CN105610310B (en) | 2018-12-21 |
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