CN105610310B - Transducer drive circuit and its method for detecting short circuit - Google Patents
Transducer drive circuit and its method for detecting short circuit Download PDFInfo
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- CN105610310B CN105610310B CN201511000316.1A CN201511000316A CN105610310B CN 105610310 B CN105610310 B CN 105610310B CN 201511000316 A CN201511000316 A CN 201511000316A CN 105610310 B CN105610310 B CN 105610310B
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- 238000000034 method Methods 0.000 title abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 26
- 230000005611 electricity Effects 0.000 claims description 13
- 230000006837 decompression Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 210000001367 artery Anatomy 0.000 claims 1
- 210000003462 vein Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
-
- 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
-
- 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 present invention provides a kind of transducer drive circuit, including multiplex pulse rectification module, the tri-level inversion module being electrically connected with the multiplex pulse rectification module and harmonic rejection module.The harmonic rejection module is electrically connected between the multiplex pulse rectification module and the tri-level inversion module, the harmonic signal for including in the output signal for filtering out the multiplex pulse rectification module.The present invention also provides a kind of transducer drive short circuit detection methods.Above-mentioned transducer drive circuit and its method for detecting short circuit can inhibit the harmonic wave of transducer drive circuit rectifies side, and then improve the power factor of integrated circuit, and can real-time judge rectification side whether short circuit occurs.
Description
Technical field
The present invention relates to transducer drive circuit more particularly to a kind of transducer drive electricity comprising twelve-pulse rectification
Road.
Background technique
In a variety of speed regulating methods of alternating current generator, frequency conversion speed-adjusting system is because flatness is good when it is adjusted the speed, high-efficient, phase
It, speed adjustable range larger, precision high the advantages that good to stability, is widely used in recent years.As converter technology is to height
Pressure, high power development, three-level NPC inverter topological structure, due to it have good system performance increasingly by
To the receiving of people.Use the high-voltage high-power frequency transformator of three-level NPC inverter topology binding structure often for raising
The performance of rectification side is rectified using twelve-pulse or neutral-point-clamped formula three-level PWM rectifier.
The prior art twelve-pulse rectification its rectification side midpoint of three-level converter often directly and inverter side midpoint
It is connected, as shown in Fig. 1, the harmonic wave of rectification side is larger, and then power factor cannot be promoted effectively.It is therefore desirable to
A kind of follow-on transducer drive circuit is proposed to overcome drawbacks described above.
Summary of the invention
The object of the present invention is to provide a kind of transducer drive circuit, the harmonic wave of rectification side can be inhibited, and then improved
Power factor.
Another object of the present invention is to provide a kind of transducer drive short circuit detection methods, can detect rectification
Whether side occurs short circuit.
To achieve the goals above, an embodiment of the present invention provides a kind of transducer drive circuit, is used in frequency converter,
Including multiplex pulse rectification module, the tri-level inversion module being electrically connected with the multiplex pulse rectification module and harmonics restraint mould
Block.The harmonic rejection module is electrically connected between the multiplex pulse rectification module and the tri-level inversion module, is used for
Filter out the harmonic signal for including in the output signal of the multiplex pulse rectification module.
Preferably, the harmonic rejection module includes that first harmonic inhibits unit and second harmonic to inhibit unit, and described the
The first end of one harmonics restraint unit is electrically connected to the middle-end of the multiplex pulse rectification module, and the first harmonic inhibits unit
Second end be electrically connected to the first end that the second harmonic inhibits unit, the second harmonic inhibits the second end of unit to be electrically connected
It is connected to the middle-end of the tri-level inversion module, the second harmonic inhibits the third end of unit to be electrically connected to the multiplex pulse
The first end of the first end of rectification module and the tri-level inversion module, the second harmonic inhibit the 4th end of unit to be electrically connected
It is connected to the second end of the multiplex pulse rectification module and the second end of the tri-level inversion module.
Preferably, it includes first capacitor, first resistor and adjustable resistance, first electricity that the first harmonic, which inhibits unit,
One end of appearance is electrically connected to the middle-end of the multiplex pulse rectification module, and the other end of the first capacitor is electrically connected to described
One resistance, the other end of the first resistor are electrically connected to one end that the second harmonic inhibits unit, the adjustable resistance
One end is electrically connected to the middle-end of the multiplex pulse rectification module, and it is humorous that the other end of the adjustable resistance is electrically connected to described second
One end of wave inhibition unit.
Preferably, the second harmonic inhibit unit include the second capacitor, third capacitor, second resistance, 3rd resistor and
4th resistance, one end of the second resistance be electrically connected to the multiplex pulse rectification module first end and three level it is inverse
Become the first end of module, the other end of the second resistance is electrically connected to one end of second capacitor, second capacitor
The other end is electrically connected to the first harmonic and inhibits the other end of unit and one end of the third capacitor, the third capacitor
The other end is electrically connected to one end of the 3rd resistor, and the other end of the 3rd resistor is electrically connected to the multiplex pulse rectification
The second end of the second end of module and the tri-level inversion module, it is humorous that one end of the 4th resistance is electrically connected to described first
Wave inhibits the other end of unit, and the other end of the 4th resistance is electrically connected to the middle-end of the tri-level inversion module.
Preferably, the transducer drive circuit further includes short-circuit detecting module, is electrically connected to the first harmonic and inhibits
Unit inhibits the potential difference between the first end and second end of unit, for detecting the first harmonic to judge the multichannel
Impulse commutation module is with the presence or absence of short circuit.
Preferably, the short-circuit detecting module include the pressure unit being sequentially connected in series, rectification unit, comparing unit and
Display unit, the pressure unit is used to inhibit the potential difference at unit both ends to carry out decompression processing the first harmonic, described
The electric signal that rectification unit is used to export the pressure unit rectifies, and the comparing unit is for the telecommunications after rectifying
It number is compared with preset threshold, the display unit is used for the comparison result signal according to the comparing unit come output short-circuit
Indication signal.
Preferably, the pressure unit includes the 5th resistance, the 6th resistance, the 7th resistance and the first amplifier, and described the
One end of five resistance is electrically connected to the first end that the first harmonic inhibits unit, and the other end of the 5th resistance is electrically connected to
The reverse input end of first amplifier, one end of the 6th resistance are electrically connected to that the first harmonic inhibits unit
Two ends, the other end of the 6th resistance are electrically connected to the positive input of first amplifier, first amplifier
Output end is electrically connected to the rectification unit, the 7th resistance be electrically connected to the reverse input end of first amplifier with it is defeated
Between outlet.
Preferably, the rectification unit includes first diode, the second diode, the 8th resistance, the 9th resistance, the tenth electricity
Resistance and the second amplifier, the anode of the first diode are electrically connected to the pressure unit, the cathode of the first diode
It is electrically connected to one end of the 8th resistance, the other end of the 8th resistance is electrically connected to the reversed defeated of second amplifier
Enter end, the cathode of second diode is electrically connected to the anode of the first diode, the anode electricity of second diode
It is connected to one end of the 9th resistance, the other end of the 9th resistance is electrically connected to the positive input of second amplifier
End, the output end of second amplifier are electrically connected to the comparing unit, and the tenth resistance is electrically connected to described second and puts
Between the reverse input end and output end of big device.
Preferably, the comparing unit includes hysteresis comparator, and the display unit includes light emitting diode.
An embodiment of the present invention also provides a kind of transducer drive short circuit detection method, for transducer drive electricity
Lu Zhong, the transducer drive circuit include multiplex pulse rectification module and be electrically connected with the multiplex pulse rectification module three
Level inverse conversion module, the first end of the multiplex pulse rectification module are electrically connected to the first end of the tri-level inversion module,
The second end of the multiplex pulse rectification module is electrically connected to the second end of the tri-level inversion module, and the multiplex pulse is whole
The middle-end of flow module is electrically connected to the middle-end of the tri-level inversion module.The transducer drive short circuit detection method packet
It includes following steps: detecting the current potential between the middle-end of the multiplex pulse rectification module and the middle-end of the tri-level inversion module
Difference and compared with preset threshold, with judge the transducer drive circuit with the presence or absence of short circuit.
Beneficial effects of the present invention: the present invention provides a kind of transducer drive circuit and its method for detecting short circuit, inhibits to become
The harmonic wave of frequency device driving circuit rectification side, and then the power factor of driving circuit is improved, while with real-time detection and can show
Whether rectification side occurs short circuit.
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
Detailed description of the invention
Fig. 1 is the circuit diagram of transducer drive circuit in one embodiment of the prior art；
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 detecting module in an embodiment of the present invention.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example and its attached drawing are described in detail.
Fig. 2 is the module map of transducer drive circuit 100 in an embodiment of the present invention.Transducer drive circuit 100 can
So as to be used in frequency converter.In the present embodiment, transducer drive circuit 100 includes multiplex pulse rectification module 1 and multichannel
The tri-level inversion module 2 and harmonic rejection module 3 that impulse commutation module 1 is electrically connected.Harmonic rejection module 3 is electrically connected to multichannel
Between impulse commutation module 1 and tri-level inversion module 2, harmonic rejection module 3 is for filtering out the defeated of multiplex pulse rectification module 1
The harmonic signal for including in signal out, to avoid harmonic signal included in impulse commutation module 1 to tri-level inversion module 2
It interferes, influences the power factor of transducer drive circuit 100.In the present embodiment, multiplex pulse rectification module 1 is preferred
For 12 road impulse commutation modules comprising 12 rectifier diodes.
Please refer to Fig. 3 and Fig. 4, in an embodiment of the present invention, harmonic rejection module 3 inhibits including first harmonic
Unit 31 and second harmonic inhibit unit 32.First harmonic inhibits the first end of unit 31 to be electrically connected to multiplex pulse rectification module
1 middle-end, first harmonic inhibit the second end of unit 31 to be electrically connected to the first end that second harmonic inhibits unit 32, second harmonic
The second end of unit 32 is inhibited to be electrically connected to the middle-end of tri-level inversion module 2, second harmonic inhibits the third end electricity of unit 32
It is connected to the first end of multiplex pulse rectification module 1 and the first end of tri-level inversion module 2, second harmonic inhibits unit 32
4th end is electrically connected to the second end of multiplex pulse rectification module 1 and the second end of tri-level inversion module 2.In present embodiment
In, the first end and second end of tri-level inversion module 2 are respectively 100 first voltage output end of transducer drive circuit and second
Voltage output end.
In an embodiment of the present invention, first harmonic inhibition unit 31 includes first capacitor C1, first resistor R1 and can
Adjust resistance RX1.One end of first capacitor C1 is electrically connected to the middle-end of multiplex pulse rectification module 1, the other end of first capacitor C1
It is electrically connected to first resistor R1, the first resistor R1 other end is electrically connected to one end that second harmonic inhibits unit 32, adjustable resistance
One end of RX1 is electrically connected to the middle-end of multiplex pulse rectification module 1, and the other end of adjustable resistance RX1 is electrically connected to second harmonic
Inhibit one end of unit 32.It includes the second capacitor C2, third capacitor C3, second resistance R2, third that second harmonic, which inhibits unit 32,
Resistance R3 and the 4th resistance R4.One end of second resistance R2 is electrically connected to the first end and three level of multiplex pulse rectification module 1
The first end of inverter module 2, the other end of second resistance R2 are electrically connected to one end of the second capacitor C2, and the second capacitor C2's is another
End is electrically connected to the other end of first resistor R1 and one end of third capacitor C3, the other end of third capacitor C3 are electrically connected to third
One end of resistance R3, the other end of 3rd resistor R3 are electrically connected to the second end and tri-level inversion of multiplex pulse rectification module 1
The second end of module 2, one end of the 4th resistance R4 are electrically connected to the other end of first resistor R1, the other end electricity of the 4th resistance R4
It is connected to the middle-end of tri-level inversion module 2.In the present embodiment, multiplex pulse rectification module 1 includes that 2 pair of six tunnel pulse is whole
Current circuit, the common end of 2 pair of six road impulse commutation circuit are the middle-end of multiplex pulse rectification module 1, remaining both ends is respectively more
First end, the second end of road impulse commutation module 1.Transducer drive circuit 100 inhibits unit 31 and second by first harmonic
Harmonics restraint unit 32 realizes the harmonic wave for filtering out 1 output end of multiplex pulse rectification module and being included, and improves the function of integrated circuit
Rate factor.
As a further refinement of the present invention, transducer drive circuit 100 further includes short-circuit detecting module 4, short circuit inspection
It surveys module 4 and is electrically connected to first harmonic inhibition unit 31, inhibit the first end and second end of unit 31 for detecting first harmonic
Between potential difference, and be compared with preset threshold to judge the multiplex pulse rectification module 1 with the presence or absence of short circuit.At this
In embodiment, short-circuit detecting module 4 is used to detect the voltage at the both ends adjustable resistance RX1, and be compared with preset threshold from
And to judge multiplex pulse rectification module 1 with the presence or absence of short circuit.
In an embodiment of the present invention, short-circuit detecting module 4 includes the pressure unit 41 being sequentially connected in series, rectification list
Member 42, comparing unit 43 and display unit 44.Pressure unit 41 is used to inhibit first harmonic (that is, the adjustable resistance of unit 31
RX1) potential difference at both ends carries out decompression processing, and the electric signal that rectification unit 42 is used to export pressure unit 41 rectifies,
Comparing unit 43 is used to for the electric signal after rectification being compared with preset threshold, and display unit 44 is used for according to comparing unit 43
Comparison result signal carry out output short-circuit indication signal.
Please refer to Fig. 5, in an embodiment of the present invention, pressure unit 41 includes the 5th resistance R5, the 6th resistance
R6, the 7th resistance R7 and the first amplifier OP1.One end of 5th resistance R5 is electrically connected to one end of adjustable resistance RX1, the 5th electricity
The other end of resistance R5 is electrically connected to the reverse input end of the first amplifier OP1, and one end of the 6th resistance R6 is electrically connected to adjustable electric
The other end of RX1 is hindered, the other end of the 6th resistance R6 is electrically connected to the positive input of the first amplifier OP1, the first amplifier
The output end of OP1 is electrically connected to rectification unit 42, the 7th resistance R7 be electrically connected to the reverse input end of the first amplifier OP1 with it is defeated
Between outlet.Rectification unit 42 includes first diode D1, the second diode D2, the 8th resistance R8, the 9th resistance R9, the tenth electricity
Hinder R10 and the second amplifier OP2.The anode of first diode D1 is electrically connected to the output end of the first amplifier OP1, the one or two pole
The cathode of pipe D1 is electrically connected to one end of the 8th resistance R8, and the other end of the 8th resistance R8 is electrically connected to the second amplifier OP2's
Reverse input end, the cathode of the second diode D2 are electrically connected to the anode of first diode D1, the anode electricity of the second diode D2
It is connected to one end of the 9th resistance R9, the other end of the 9th resistance R9 is electrically connected to the positive input of the second amplifier OP2, the
The output end of two amplifier OP2 is electrically connected to comparing unit 43, and the tenth resistance R10 is electrically connected to the reversed of the second amplifier OP2
Between input terminal and output end.Comparing unit 43 includes hysteresis comparator OP3, can be to avoid by setting hysteresis comparator OP3
The appearance of its output end signal changes repeatedly.Display unit 44 include light emitting diode, be used to indicate the output of comparator as a result, with
Output short-circuit indication signal.
A kind of transducer drive short circuit detection method, the transducer drive are also described in an embodiment of the present invention
Short circuit detection method is in transducer drive circuit 100, which to include following
Step: detecting multiplex pulse rectification module 1 middle-end and tri-level inversion module 2 middle-end between potential difference and with default threshold
Value compares, and judges whether transducer drive circuit 100 occurs short circuit according to comparison result signal.
In conclusion the present invention provides a kind of transducer drive circuit and its method for detecting short circuit, inhibit transducer drive
The harmonic wave of circuit rectifies side, and then the power factor of driving circuit is improved, while with real-time detection and can show that rectification side is
No generation short circuit.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the claims in the present invention
Protection scope.
Claims (7)
1. a kind of transducer drive circuit, in frequency converter, including multiplex pulse rectification module and whole with the multiplex pulse
The tri-level inversion module of flow module electrical connection；Further include harmonic rejection module, is electrically connected to the multiplex pulse rectification module
And between the tri-level inversion module, the harmonic wave for including in the output signal for filtering out the multiplex pulse rectification module is believed
Number；The harmonic rejection module includes that first harmonic inhibits unit and second harmonic to inhibit unit, and the first harmonic inhibits single
The first end of member is electrically connected to the middle-end of the multiplex pulse rectification module, and the first harmonic inhibits the second end of unit to be electrically connected
It is connected to the first end that the second harmonic inhibits unit, the second harmonic inhibits the second end of unit to be electrically connected to three electricity
The middle-end of flat inverter module, the second harmonic inhibit the third end of unit to be electrically connected to the of the multiplex pulse rectification module
The first end of one end and the tri-level inversion module, the second harmonic inhibit the 4th end of unit to be electrically connected to the multichannel
The second end of the second end of impulse commutation module and the tri-level inversion module；
It includes first capacitor, first resistor and adjustable resistance, one end electricity of the first capacitor that the first harmonic, which inhibits unit,
It is connected to the middle-end of the multiplex pulse rectification module, the other end of the first capacitor is electrically connected to the first resistor；Institute
The other end for stating first resistor is electrically connected to the first end that the second harmonic inhibits unit；One end of the adjustable resistance is electrically connected
It is connected to the middle-end of the multiplex pulse rectification module, the other end of the adjustable resistance is electrically connected to the second harmonic and inhibits single
The first end of member；
It includes the second capacitor, third capacitor, second resistance, 3rd resistor and the 4th resistance, institute that the second harmonic, which inhibits unit,
State second resistance one end be electrically connected to the multiplex pulse rectification module first end and the tri-level inversion module
One end, the other end of the second resistance are electrically connected to one end of second capacitor；The other end of second capacitor is electrically connected
It is connected to the first harmonic and inhibits the second end of unit and one end of the third capacitor；The other end of the third capacitor is electrically connected
It is connected to one end of the 3rd resistor, the other end of the 3rd resistor is electrically connected to the second of the multiplex pulse rectification module
The second end of end and the tri-level inversion module, one end of the 4th resistance are electrically connected to the first harmonic and inhibit unit
Second end, the other end of the 4th resistance is electrically connected to the middle-end of the tri-level inversion module.
2. transducer drive circuit as described in claim 1, which is characterized in that further include short-circuit detecting module, be electrically connected to
The first harmonic inhibits unit, inhibits the current potential between the first end and second end of unit for detecting the first harmonic
Difference, to judge the multiplex pulse rectification module with the presence or absence of short circuit.
3. transducer drive circuit as claimed in claim 2, which is characterized in that the short-circuit detecting module includes being sequentially connected in series
Pressure unit, rectification unit, comparing unit and the display unit of connection, the pressure unit are used to inhibit the first harmonic
The potential difference at unit both ends carries out decompression processing, and the electric signal that the rectification unit is used to export the pressure unit carries out whole
Stream, the comparing unit are used to for the electric signal after rectification being compared with preset threshold, and the display unit is used for according to institute
The comparison result signal for stating comparing unit carrys out output short-circuit indication signal.
4. transducer drive circuit as claimed in claim 3, which is characterized in that the pressure unit includes the 5th resistance, the
Six resistance, the 7th resistance and the first amplifier, one end of the 5th resistance are electrically connected to the first harmonic and inhibit unit
First end, the other end of the 5th resistance are electrically connected to the reverse input end of first amplifier, the 6th resistance
One end is electrically connected to the second end that the first harmonic inhibits unit, and the other end of the 6th resistance is electrically connected to described first
The positive input of amplifier, the output end of first amplifier are electrically connected to the rectification unit, the 7th resistance electricity
It is connected between the reverse input end and output end of first amplifier.
5. transducer drive circuit as claimed in claim 3, which is characterized in that the rectification unit include first diode,
Second diode, the 8th resistance, the 9th resistance, the tenth resistance and the second amplifier, the anode electrical connection of the first diode
In the output end of the pressure unit, the cathode of the first diode is electrically connected to one end of the 8th resistance, and described
The other end of eight resistance is electrically connected to the reverse input end of second amplifier, and the cathode of second diode is electrically connected to
The anode of the first diode, the anode of second diode are electrically connected to one end of the 9th resistance, and the described 9th
The other end of resistance is electrically connected to the positive input of second amplifier, and the output end of second amplifier is electrically connected to
The input terminal of the comparing unit, the tenth resistance be electrically connected to second amplifier reverse input end and output end it
Between.
6. transducer drive circuit as claimed in claim 3, which is characterized in that the comparing unit includes hysteresis comparator,
The display unit includes light emitting diode.
7. a kind of transducer drive short circuit detection method is used in transducer drive circuit, the transducer drive circuit
Including multiplex pulse rectification module and the tri-level inversion module being electrically connected with the multiplex pulse rectification module, the multichannel arteries and veins
The first end for rushing rectification module is electrically connected to the first end of the tri-level inversion module, and the of the multiplex pulse rectification module
Two ends are electrically connected to the second end of the tri-level inversion module, and the middle-end of the multiplex pulse rectification module is electrically connected to described
The middle-end of tri-level inversion module, which is characterized in that further include that first harmonic inhibits unit and second harmonic to inhibit unit；It is described
Detection method includes the following steps for transducer drive short circuit: detecting the first harmonic and inhibits the potential difference at unit both ends simultaneously
Compared with preset threshold, to judge the transducer drive circuit with the presence or absence of 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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| Publication Number | Publication Date |
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| CN105610310A CN105610310A (en) | 2016-05-25 |
| CN105610310B true CN105610310B (en) | 2018-12-21 |
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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 |
| 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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| Publication number | Publication date |
|---|---|
| CN105610310A (en) | 2016-05-25 |
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