CN201231217Y - IGBT drive module and IGBT drive device - Google Patents

IGBT drive module and IGBT drive device Download PDF

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Publication number
CN201231217Y
CN201231217Y CNU2008201089629U CN200820108962U CN201231217Y CN 201231217 Y CN201231217 Y CN 201231217Y CN U2008201089629 U CNU2008201089629 U CN U2008201089629U CN 200820108962 U CN200820108962 U CN 200820108962U CN 201231217 Y CN201231217 Y CN 201231217Y
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China
Prior art keywords
igbt
circuit
oscillator
turn
pwm signal
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Expired - Fee Related
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CNU2008201089629U
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Chinese (zh)
Inventor
曾建唐
夏云生
孙鹏
李文涛
沈若泉
王文波
李海阳
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Beijing Institute of Petrochemical Technology
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Beijing Institute of Petrochemical Technology
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Priority to CNU2008201089629U priority Critical patent/CN201231217Y/en
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Abstract

The utility model relates to an IGBT driving module which comprises a signal generating circuit for generating vibration signals, a light-coupled isolation circuit connected with the signal generating circuit, and a driving circuit connected with the light-coupled isolation circuit. The signal generating circuit generates duplex PWM signals which undergo signal isolation coupling to the driving circuit under the action of the light-coupled isolation circuit, the PWM signals are output by the driving circuit to control the connection and the disconnection of IGBTs; an IGBT driving device provided by the utility model comprises the IGBT driving module and two IGBTs connected with the IGBT driving module in series; and the IGBT driving module generates the duplex PWM signals to control the connection and the disconnection of the two IGBTs. The IGBT driving module and the IGBT driving device together with an electromagnetic coil form a series loop through the control of the IGBTs by the duplex PWM signals, and the electromagnetic coil can be caused to generate low-frequency vibration similar to sinusoidal half-waves; and the utility model is applicable to the driving circuit controlled by an electromagnetic material feeding control device, is simply operated, low in production cost and easy to maintain.

Description

A kind of IGBT driver module and IGBT drive unit
Technical field
The utility model relates to IGBT control technology field, relates in particular to IGBT driver module and IGBT drive unit.
Background technology
The electromagnetism pay-off is mainly used in the packing of irregularly shaped product, as making industry extensive uses such as nail and medicine.At present, the type that is used for the drive circuit of electromagnetism pay-off can roughly be divided three classes:
1, diode rectification drive circuit, this type of drive circuit are added to civil power after by diode rectification excitation hopper vibration on the solenoid of electromagnetism pay-off.The frequency that this type of drive circuit utilizes half-wave or full-wave rectification can change excited vibration is 50Hz or 100Hz.The amplitude adjusted of this type of drive circuit can be regulated supply voltage by adjustable resistance of serial connection in the solenoid loop or with pressure regulator.Though this type of circuit is simple, the amplitude regulating circuit volume is big, power consumption is big, seldom uses at present.
2, thyristor driving circuit by changing the phase place or the number of IGCT control gate pole trigger impulse, can conveniently change the size that flows through thyristor current flows.But, because solenoid can produce inverse electromotive force in vibration processes, cause the gusset negative amplitude of electromagnetism pay-off to strengthen, long-time running can be shortened the life-span of gusset greatly.
3, the on-off circuit of PWM control, the on-off circuit that adopts the control of PWM technology in recent years in a large number is as drive circuit.More external producers with this type of circuit design and the product that manufactures independently seriation for selecting for use, but The whole control circuit complexity, the cost height, maintenance is inconvenience very.
Attached: IGBT (Insulated Gate Bipolar Transistor), igbt; PWM (Pulse Width Modulation), pulse-width signal.
The utility model content
The purpose of this utility model provides a kind of IGBT driver module and IGBT drive unit, the loop that the pwm signal control that the IGBT driver module produces is made of igbt and solenoid, the vibration frequency of solenoid can not only be controlled, and the Oscillation Amplitude of solenoid can also be controlled.
The purpose of this utility model is achieved through the following technical solutions:
On the one hand, the utility model provides a kind of IGBT driver module, comprise the signal generating circuit that is used to produce oscillator signal, the optical coupling isolation circuit that is connected with this signal generating circuit and the drive circuit that is connected with this optical coupling isolation circuit, described signal generating circuit produces the two-way pwm signal respectively, described two-way pwm signal is realized the signal isolation coupling to described drive circuit by optical coupling isolation circuit, by the turn-on and turn-off of described drive circuit output pwm signal control IGBT.
Wherein, described signal generating circuit comprises two gang potentiometers and first oscillator and second oscillator that are connected with this gang potentiometer respectively, and first oscillator controlled by described each gang potentiometer and second oscillator produces one road pwm signal respectively.
On the other hand, the utility model provides a kind of IGBT drive unit, comprise IGBT driver module as claimed in claim 1 or 2 and two igbts that series connection is provided with that are connected with this IGBT driver module, described IGBT driver module produces the turn-on and turn-off that the two-way pwm signal is controlled described two igbts.
Wherein, described two igbts are first igbt, second igbt, described first igbt, second igbt are in series with solenoid and constitute the loop, and the two-way pwm signal that described drive circuit transmission comes is controlled the turn-on and turn-off of described first igbt and second igbt and then controlled the vibration frequency and the amplitude of described solenoid.
Wherein, also comprise current foldback circuit; described current foldback circuit comprises voltage comparator, the current setting resistor and the current sampling resistor that are connected with described voltage comparator; described current sampling resistor also is connected with described second igbt, described current sampling resistor and described current setting resistor through voltage comparator relatively after the turn-on and turn-off of the triode that is connected with described second oscillator of control.
Wherein, described first oscillator and second oscillator comprise the NE555 time-base integrated circuit.
Wherein, described optical coupling isolation circuit comprises HCPL2530, HCPL2531 photoelectric coupling circuit.
Wherein, described drive circuit comprises that IR2102, IR2110 drive chip.
Wherein, described voltage comparator comprises LM324, LM399 voltage comparator.
Owing to adopted technique scheme, the utlity model has following advantage and effect:
1, the pwm signal of IGBT driver module generation is controlled the loop that is made of igbt and solenoid, can not only change the vibration frequency of solenoid, and can also change the Oscillation Amplitude of solenoid, can control the vibration frequency and the Oscillation Amplitude of solenoid easily;
2, the IGBT driver module by current sampling resistor and current setting resistor voltage through voltage comparator relatively after the control igbt turn-off, play the effect of overcurrent protection;
3, IGBT driver module and IGBT drive unit internal structure adopt universal component, and be simple in structure, with low cost, is easy to safeguard repair.
Description of drawings
Fig. 1 is the IGBT drive unit block diagram of the utility model preferred embodiment;
Fig. 2 is the IGBT drive unit schematic diagram of the utility model preferred embodiment;
Wherein, 1, signal generating circuit, 2, optical coupling isolation circuit, 3, drive circuit, 4, current foldback circuit, 5, solenoid and two loops that IGBT constitutes, 6, IGBT driver module.
The specific embodiment
Embodiment one
The purpose of this utility model is to utilize waveform signal to produce circuit to produce a series of orderly pwm signals, so that the driving of the turn-on and turn-off of control igbt and then realization igbt.
As shown in Figure 1, a kind of IGBT driver module 6 of the present utility model, it comprises the signal generating circuit 1 that is used to produce oscillator signal, the optical coupling isolation circuit 2 that is connected with signal generating circuit 1, the drive circuit 3 that is connected with optical coupling isolation circuit 2.As shown in Figure 2, signal generating circuit 1 comprises two gang potentiometer W1 and W2, and the first oscillator IC that is connected with gang potentiometer W1 1And the second oscillator IC of gang potentiometer W2 connection 2Gang potentiometer W1 and W2 control the first oscillator IC 1And the second oscillator IC 2Produce one road pwm signal respectively, wherein, the frequency of one road pwm signal control solenoid Load vibration, the Oscillation Amplitude (waveform shown in middle part arrow among Fig. 2) of another road pwm signal control solenoid Load.
Signal generating circuit 1 produces the two-way pwm signal respectively, the two-way pwm signal realizes that by optical coupling isolation circuit 2 the signal isolation coupling is to drive circuit 3, to the first igbt VT1, the second igbt VT2 output pwm signal, the grid voltage of controlling the first igbt VT1, the second igbt VT2 makes its turn-on and turn-off by drive circuit 3.
The first oscillator IC of the present utility model 1And the second oscillator IC 2Comprise the NE555 time-base integrated circuit, drive circuit 3 comprises that IR2102, IR2110 drive chip, and optical coupling isolation circuit 2 comprises HCPL2530, HCPL2531 photoelectric coupling circuit, and what should know is that said elements includes but not limited to this.
When using the utility model, the IGBT driver module produces a series of orderly pwm signals by resistor W1 and W2 control waveform signal generating circuit 1, pwm signal is coupled to drive circuit 3, drive circuit 3 connects the first igbt VT1, the second igbt VT2, so that control the turn-on and turn-off of the first igbt VT1, the second igbt VT2, and then the vibration frequency of control load and Oscillation Amplitude.The utility model is simple in structure, and is with low cost, is easy to safeguard repair, applied widely.
Embodiment two
The purpose of this utility model is to utilize waveform signal to produce circuit to produce a series of orderly pwm signals, so that the turn-on and turn-off of control igbt, and then vibration frequency, the Oscillation Amplitude of the solenoid in control and igbt formation loop.
As shown in Figure 1, based on IGBT driver module 6, the utility model provides a kind of IGBT drive unit, and it comprises IGBT driver module 6 and two the first igbt VT1, second igbt VT2 that series connection is provided with that are connected with IGBT driver module 6.
As shown in Figure 2, signal generating circuit 1 comprises two gang potentiometer W1 and W2 and the first oscillator IC that is connected with W2 with gang potentiometer W1 1And the second oscillator IC 2Gang potentiometer W1 controls the first oscillator IC 1, gang potentiometer W2 controls the second oscillator IC 2Produce one road pwm signal respectively, wherein, the frequency of one road pwm signal control solenoid Load vibration, the Oscillation Amplitude (waveform shown in two arrows as shown in Figure 2) of another road pwm signal control solenoid Load.
The two-way pwm signal of signal generating circuit 1 is realized the signal isolation coupling to drive circuit 3 by optical coupling isolation circuit 2, and the output of drive circuit 3 is serially connected with current-limiting resistance R 3And R 4, current-limiting resistance R 3And R 4Be connected with the grid of the first igbt VT1 and the second igbt VT2.The first igbt VT1 and the second igbt VT2 series electrical magnetic coil Load, the solenoid Load and the first igbt VT1 and the second igbt VT2 constitute loop 5, drive circuit 3 transmits the turn-on and turn-off that the two-way pwm signal (waveform shown in two arrows as shown in Figure 2) that comes is controlled the first igbt VT1 and the second igbt VT2, with vibration frequency and the Oscillation Amplitude (waveform shown in right side arrow among Fig. 2) of control solenoid Load.And, as from the foregoing, by regulating vibration frequency and the Oscillation Amplitude that two gang potentiometer W1 and W2 can change solenoid Load.
IGBT drive unit of the present utility model also comprises current foldback circuit 4, and current foldback circuit 4 comprises voltage comparator ic 5, and voltage comparator ic 5The current setting resistor R that connects P5And current sampling resistor R 5Voltage comparator ic 5Connect the second oscillator IC 2, current sampling resistor R 5Also be connected with the second igbt VT2.Current setting resistor R P5Can regulate setting as required, by regulating current setting resistor R P5To change voltage comparator ic 5Threshold voltage, set the current limit that entire I GBT drive unit is allowed.
When using the utility model IGBT drive unit, specifically referring to Fig. 2, the first oscillator IC 1And the second oscillator IC 2Be the NE555 time-base integrated circuit, 3 IR2102 of drive circuit drive chip, and optical coupling isolation circuit 2 is the HCPL2530 photoelectric coupling circuit, and voltage comparator is LM399:
1, by regulating current setting resistor R P5To change voltage comparator ic 5Threshold voltage, set the lowest high-current value that entire I GBT drive unit is allowed;
2, gang potentiometer W1 and W2 control the first oscillator IC respectively 1And the second oscillator IC 2Produce the pwm signal of two-way certain frequency, the frequency of one road pwm signal control solenoid Load vibration, the Oscillation Amplitude of another road pwm signal control solenoid Load;
3, the two-way pwm signal is through photoelectric coupling circuit IC 3Be coupled to the driving chip IC 4, drive chip IC 4For IR2102 bootstrap type two-way IGBT drives chip, after the second igbt VT2 conducting, the first igbt VT1 conducting, the loop conducting of the solenoid Load and the first igbt VT1 and the second igbt VT2, vibration frequency and the Oscillation Amplitude of pwm signal control solenoid Load, the vibration of energized solenoids elevating hopper, the low-frequency vibration (waveform shown in right side arrow among Fig. 2) that produces the near sinusoidal half-wave.
4, by regulating two gang potentiometer W1 and W2 to change vibration frequency and the Oscillation Amplitude of solenoid Load.
In using the utility model IGBT drive unit process, in case produce fault, the device electric current surpasses current setting resistor R P5When predefined lowest high-current value forms overcurrent, current sampling resistor R 5With current setting resistor R P5Voltage is through voltage comparator ic 5Relatively back gauge tap triode VT3 conducting, the second oscillator IC 2Turn-off; IR2102 drives the pwm signal output that chip blocks the second igbt VT2 road; the second igbt VT2 turn-offs; in view of IR2102 drives chip is that bootstrap type two-way IGBT drives chip; so closing, the second igbt VT2 has no progeny; the first igbt VT1 must turn-off, and then protects igbt and solenoid to avoid burning out.
Above-mentioned drive circuit 3 comprises that also IR2110 drives chip, and optical coupling isolation circuit 2 also wraps the HCPL2531 photoelectric coupling circuit, and voltage comparator also comprises the LM324 voltage comparator, and what should know is that said elements includes but not limited to this.
In addition, consider the power of electromagnetism pay-off, when using the utility model, igbt need be installed the fin of certain area or take other cooling measure.
To sum up, the utility model IGBT drive unit produces a series of orderly pwm signals by resistor control waveform signal generating circuit, pwm signal is coupled to the loop that drives chip controls igbt and solenoid formation, by regulating vibration frequency and the Oscillation Amplitude that two gang potentiometers and current setting resistance can change solenoid, produce the low-frequency vibration of near sinusoidal half-wave, the power consumption that has effectively overcome existing electromagnetism feed appliance drive circuit is big, can not eliminate defectives such as the complicated inconvenient maintenance of counter electromotive force and circuit.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.

Claims (8)

1, a kind of IGBT driver module, it is characterized in that, comprise the signal generating circuit that is used to produce oscillator signal, the optical coupling isolation circuit that is connected with this signal generating circuit and the drive circuit that is connected with this optical coupling isolation circuit, described signal generating circuit produces the two-way pwm signal respectively, described two-way pwm signal is realized the signal isolation coupling to described drive circuit by optical coupling isolation circuit, by the turn-on and turn-off of described drive circuit output pwm signal control IGBT.
2, IGBT driver module according to claim 1, it is characterized in that, described signal generating circuit comprises two gang potentiometers and first oscillator and second oscillator that are connected with this gang potentiometer respectively, and first oscillator controlled by described each gang potentiometer and second oscillator produces one road pwm signal respectively.
3, a kind of IGBT drive unit, it is characterized in that, comprise IGBT driver module as claimed in claim 1 or 2 and two igbts that series connection is provided with that are connected with this IGBT driver module, described IGBT driver module produces the turn-on and turn-off that the two-way pwm signal is controlled described two igbts.
4, IGBT drive unit according to claim 3, it is characterized in that, described two igbts are first igbt, second igbt, described first igbt, second igbt are in series with solenoid and constitute the loop, and the two-way pwm signal that described drive circuit transmission comes is controlled the turn-on and turn-off of described first igbt and second igbt and then controlled the vibration frequency and the amplitude of described solenoid.
5, IGBT drive unit according to claim 4; it is characterized in that; also comprise current foldback circuit; described current foldback circuit comprises voltage comparator, the current setting resistor and the current sampling resistor that are connected with described voltage comparator; described current sampling resistor also is connected with described second igbt, described current sampling resistor and described current setting resistor through voltage comparator relatively after the turn-on and turn-off of the triode that is connected with described second oscillator of control.
6, IGBT drive unit according to claim 5 is characterized in that, described first oscillator and second oscillator comprise the NE555 time-base integrated circuit.
7, IGBT drive unit according to claim 6 is characterized in that, described optical coupling isolation circuit comprises HCPL2530, HCPL2531 photoelectric coupling circuit.
8, IGBT drive unit according to claim 7 is characterized in that, described drive circuit comprises that IR2102, IR2110 drive chip.
9, IGBT drive unit according to claim 8 is characterized in that, described voltage comparator comprises LM324, LM399 voltage comparator.
CNU2008201089629U 2008-06-30 2008-06-30 IGBT drive module and IGBT drive device Expired - Fee Related CN201231217Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102570955A (en) * 2011-12-29 2012-07-11 万向钱潮股份有限公司 Current drive control device for electromagnetic coils
CN103795285A (en) * 2012-10-31 2014-05-14 上海儒竞电子科技有限公司 Bidirectional power device
CN104794452A (en) * 2015-04-29 2015-07-22 宁波摩米创新工场电子科技有限公司 Triode bias type fingerprint recognition system
CN107924177A (en) * 2015-08-31 2018-04-17 马波斯S.P.A.公司 Data processing and Transmission system and its method
CN111123787A (en) * 2019-12-26 2020-05-08 浙江大学台州研究院 Sweep frequency driving device and method of quartz wafer feeding device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102570955A (en) * 2011-12-29 2012-07-11 万向钱潮股份有限公司 Current drive control device for electromagnetic coils
CN103795285A (en) * 2012-10-31 2014-05-14 上海儒竞电子科技有限公司 Bidirectional power device
CN103795285B (en) * 2012-10-31 2016-08-03 上海儒竞电子科技有限公司 Bilateral power devices
CN104794452A (en) * 2015-04-29 2015-07-22 宁波摩米创新工场电子科技有限公司 Triode bias type fingerprint recognition system
CN104794452B (en) * 2015-04-29 2018-06-26 宁波摩米创新工场电子科技有限公司 A kind of triode voltage bias type fingerprint recognition system
CN107924177A (en) * 2015-08-31 2018-04-17 马波斯S.P.A.公司 Data processing and Transmission system and its method
CN107924177B (en) * 2015-08-31 2021-12-10 马波斯S.P.A.公司 Data processing and transmission system and method thereof
CN111123787A (en) * 2019-12-26 2020-05-08 浙江大学台州研究院 Sweep frequency driving device and method of quartz wafer feeding device

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Granted publication date: 20090506

Termination date: 20120630