CN208272871U - A kind of high-power self-regulation inverter driving apparatus - Google Patents
A kind of high-power self-regulation inverter driving apparatus Download PDFInfo
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- CN208272871U CN208272871U CN201820819697.9U CN201820819697U CN208272871U CN 208272871 U CN208272871 U CN 208272871U CN 201820819697 U CN201820819697 U CN 201820819697U CN 208272871 U CN208272871 U CN 208272871U
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Abstract
The utility model discloses a kind of high-power self-regulation inverter driving apparatus, including control circuit, driving circuit, expansion current circuit and adjustment module, control circuit to connect with driving circuit, and driving circuit is connect with current circuit is expanded, and expands current circuit and connect with adjustment module；Adjustment module respectively in IGBT parallel inverter circuit the first inverter module and the second inverter module connect, for opening the first inverter module and the second inverter module, and adjust the electric current that the first inverter module and the second inverter module are exported；Adjustment module includes the first adjusting circuit, the second adjusting circuit, third adjusting circuit and the 4th adjusting circuit.Advantages and beneficial effects of the utility model lie in that improving the driving power to each transistor, guarantees that each transistor can obtain enough electric currents and be triggered, ensure that high-power welding machine can operate normally；So that the service time of two transistors driven simultaneously and flowed through electric current reach unanimously, it is excessive and damage to avoid transistor current.
Description
Technical field
The utility model relates to electric field, in particular to a kind of high-power self-regulation inverter driving apparatus.
Background technique
With popularizing for inversion large power welding machine, power is increasing, some high-power welder powers have reached 1500-
2000KVA.The single IGBT maximum rated current of 1200V grade is 3600A at present, is made of the IGBT of single 3600A
Inversion welding source is only capable of the high-power welding machine of matching 1000KVA or so, power again big high-power welding machine just need it is multiple
The inverter of IGBT parallel connection.The IGBT cost of high current is very high, has to reliably, otherwise will cause to technical requirements in parallel
Very huge economic loss.
The parallel connection of general low current IGBT is fairly simple, and it is also directly in parallel to generally use the direct parallel drive circuit of major loop
Mode.What the lesser IGBT of rated current needed open, and electric current is also smaller, and opening speed is wanted for driving circuit than very fast
It is not very high for asking, and common driving core can be used and directly drive.
IGBT parallel connection first has to guarantee that the electric current of two IGBT is consistent, if two electric currents are inconsistent, electric current is big
IGBT can be burnt out first, become an other IGBT and worked independently, and all load currents cause this IGBT by this IGBT
Also overcurrent is burnt out.The IGBT of high current is in parallel, and there are the following problems, is that driving current is bigger first, it is desirable that driving circuit
There is enough power and to guarantee that the service time of IGBT is consistent.Besides it is slower to open speed by the IGBT of high current, it is desirable that
It is consistent that two IGBT in parallel open speed.All it is single tube encapsulation there are also the IGBT for being exactly high current, is not two single tube envelopes
The half-bridge structure being fitted together, it is relatively high to the connection request of major loop, it is ensured that the symmetry of link circuit will be got well.However it is existing
Some inverter driving apparatus often have the disadvantages that in the driving to IGBT parallel inverter circuit
1, lower to the driving power of the transistor in IGBT parallel inverter circuit
Commercially available finished product driving circuit is generally two-way half-bridge mode, and the output power of single channel is 4W, and one-to-one driving is single
A IGBT has no problem.When the IGBT parallel connection of two 3600A, the driving power needed will be doubled.
2, the transistor in IGBT parallel inverter circuit to open speed inconsistent
In addition to require IGBT service time will unanimously other than, also require IGBT to open speed consistent.If two
IGBT's opens that speed is inconsistent, and opening fast IGBT can be such that the voltage at the both ends C, E reduces first, because of C, E of two IGBT
It is connected in parallel, opening slow IGBT can cause reliably to trigger because C, E both end voltage are too low.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of high-power self-regulation inverter driving apparatus.This technology side
Case is by improving high-power self-regulation inverter driving apparatus to each crystal in IGBT parallel inverter circuit using expansion current circuit
The driving power of pipe guarantees that each transistor can obtain enough electric currents and be triggered, and then guarantees to be connected to IGBT parallel connection
High-power welding machine on inverter circuit can operate normally；Make the open-minded of drive simultaneously two transistors using adjustment module
Time and flowed through electric current reach unanimously, and then play and carry out to the speed of opening of the transistor in IGBT parallel inverter circuit
The effect of self-control, avoid and meanwhile two transistors driving because open speed it is inconsistent due to lead to one of transistor
Because passing through electric current excessive the case where damaging.
The high-power self-regulation inverter driving apparatus of one of the utility model, for controlling in IGBT parallel inverter circuit
It the driving power of the base stage of transistor and opens speed, including control circuit, driving circuit, expands current circuit and adjustment module,
The control circuit is connect with driving circuit, and the driving circuit is connect with the expansion current circuit, the expansion current circuit with it is described
Adjustment module connection；The adjustment module respectively in the IGBT parallel inverter circuit the first inverter module and the second inversion
Module connection, for opening first inverter module and the second inverter module, and adjusts first inverter module and second
The electric current that inverter module is exported；The adjustment module include first adjust circuit, second adjust circuit, third adjust circuit and
4th adjusts circuit.
In above scheme, the expansion current circuit includes triode D1 and D2, and the collector of the triode D1 connects positive electricity
Pressure side, the emitter of the triode D1 are connect with the emitter of the triode D2, the collector connection of the triode D2
Negative voltage side, the base stage of the triode D1 and the base stage of triode D2 are connect with drive module respectively, the triode D1's
Emitter is connect with adjustment module respectively with the emitter of the triode D2.
In above scheme, the control circuit is used for the driving circuit output pulse width modulated signal, the drive
Dynamic circuit is according to the pulse width modulating signal to the expansion current circuit outputting drive voltage.
In above scheme, the transistor V1 and V2 and first in the first adjusting circuit and the first inverter module is defeated
Outlet connection；It is described first adjust circuit include adjust resistance RG1, RE1, RG2 and RE2, it is described adjust resistance RG1 one end with
The expansion current circuit connection, the other end for adjusting resistance RG1 are connect with the base stage of transistor V1 in the first inverter module；Institute
The one end for stating adjusting resistance RG2 is connect with the expansion current circuit, in the other end and the first inverter module for adjusting resistance RG2
The base stage of transistor V2 connects；
Described one end for adjusting resistance RE1 is connect with the first output end respectively with described one end for adjusting resistance RE2, described
Adjust resistance RE1 and the adjustings resistance RE2 be also serially connected, it is described adjust resistance RE1 backwards to adjusting resistance RE2 one end and
In first inverter module transistor V1 emitter connection, it is described adjust resistance RE2 backwards to adjust resistance RE1 one end with
The emitter connection of transistor V2 in first inverter module；
Adjust resistance RE1 towards transistor V1 emitter one end also with adjust base of the resistance RG1 towards transistor V1
Pole one end connection, adjust resistance RE2 towards transistor V2 emitter one end also with adjust resistance RG2 towards transistor V2's
The connection of base stage one end.
In above scheme, the transistor V3 and V4 and first in the second adjusting circuit and the first inverter module is defeated
Outlet connection；It is described second adjust circuit include adjust resistance RG3, RE3, RG4 and RE4, it is described adjust resistance RG3 one end with
The expansion current circuit connection, the other end for adjusting resistance RG3 are connect with the base stage of transistor V3 in the second inverter module；Institute
The one end for stating adjusting resistance RG4 is connect with the expansion current circuit, in the other end and the first inverter module for adjusting resistance RG4
The base stage of transistor V4 connects；
Described one end for adjusting resistance RE3 is connect with the first output end respectively with described one end for adjusting resistance RE4, described
Adjust resistance RE3 and the adjustings resistance RE4 be also serially connected, it is described adjust resistance RE3 backwards to adjusting resistance RE4 one end and
In first inverter module transistor V3 emitter connection, it is described adjust resistance RE4 backwards to adjust resistance RE3 one end with
The emitter with transistor V4 in the first inverter module is connect；
Adjust resistance RE3 towards transistor V3 emitter one end also with adjust base of the resistance RG3 towards transistor V3
Pole one end connection, adjust resistance RE4 towards transistor V4 emitter one end also with adjust resistance RG4 towards transistor V4's
The connection of base stage one end.
In above scheme, the transistor V5 and V6 and second that the third is adjusted in circuit and the second inverter module is defeated
Outlet connection；It includes adjusting resistance RG5, RE5, RG6 and RE6 that the third, which adjusts circuit, described one end for adjusting resistance RG5 with
The expansion current circuit connection, the other end for adjusting resistance RG5 are connect with the base stage of transistor V5 in the second inverter module；
It is described adjust resistance RG6 one end connect with the expansions current circuit, it is described adjusting resistance RG6 the other end and with the second inversion mould
The base stage connection of transistor V6 in block；
Described one end for adjusting resistance RE5 is connect with second output terminal respectively with described one end for adjusting resistance RE6, described
Adjust resistance RE5 and the adjustings resistance RE6 be also serially connected, it is described adjust resistance RE5 backwards to adjusting resistance RE6 one end and
The emitter with transistor V5 in the second inverter module is connect, and the resistance RE6 that adjusts is backwards to the one end for adjusting resistance RE5
It is connect with the emitter with transistor V6 in the second inverter module；
Adjust resistance RE5 towards transistor V5 emitter one end also with adjust base of the resistance RG5 towards transistor V5
Pole one end connection, adjust resistance RE6 towards transistor V6 emitter one end also with adjust resistance RG6 towards transistor V6's
The connection of base stage one end.
In above scheme, the transistor V7 and V8 and second in the 4th adjusting circuit and the second inverter module is defeated
Outlet connection；It is described 4th adjust circuit include adjust resistance RG7, RE7, RG8 and RE8, it is described adjust resistance RG7 one end with
The expansion current circuit connection, the other end for adjusting resistance RG7 are connect with the base stage of transistor V7 in the second inverter module；Institute
The one end for stating adjusting resistance RG8 is connect with the expansion current circuit, in the other end and the second inverter module for adjusting resistance RG8
The base stage of transistor V8 connects；
Described one end for adjusting resistance RE7 is connect with second output terminal respectively with described one end for adjusting resistance RE8, described
Adjust resistance RE7 and the adjustings resistance RE8 be also serially connected, it is described adjust resistance RE7 backwards to adjusting resistance RE8 one end and
In second inverter module transistor V7 emitter connection, it is described adjust resistance RE8 backwards to adjust resistance RE7 one end with
The emitter connection of transistor V8 in second inverter module；
Adjust resistance RE7 towards transistor V7 emitter one end also with adjust base of the resistance RG7 towards transistor V7
Pole one end connection, adjust resistance RE8 towards transistor V8 emitter one end also with adjust resistance RG8 towards transistor V8's
The connection of base stage one end.
Transistor V1, V2, V3, V4, V5, V6, V7 and V8 difference in above scheme, in the IGBT parallel inverter circuit
For NPN type triode.
In above scheme, the triode D1 is NPN type triode, and the triode D2 is PNP type triode.
In above scheme, the voltage of the positive voltage terminal is+15V, and the voltage of the negative voltage side is -15V.
Advantages and beneficial effects of the utility model lie in that the utility model provides a kind of high-power self-regulation inversion driving
Device.The technical program is by improving high-power self-regulation inverter driving apparatus to IGBT parallel inverter electricity using expansion current circuit
The driving power of each transistor in road guarantees that each transistor can obtain enough electric currents and be triggered, and then guarantees to connect
The high-power welding machine connect on IGBT parallel inverter circuit can operate normally；Make drive simultaneously two using adjustment module
The service time of transistor and flowed through electric current reach unanimously, and then play to the transistor in IGBT parallel inverter circuit
Open the effect that speed carries out self-control, avoid and meanwhile two transistors driving because open speed it is inconsistent due to lead to it
In a transistor because passing through electric current excessive the case where damaging.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is that a kind of high-power self-regulation inverter driving apparatus of the utility model and first adjust the structural representation of circuit
Figure；
Fig. 2 is that a kind of high-power self-regulation inverter driving apparatus of the utility model and second adjust the structural representation of circuit
Figure；
Fig. 3 is the structural representation that a kind of high-power self-regulation inverter driving apparatus of the utility model and third adjust circuit
Figure；
Fig. 4 is that a kind of high-power self-regulation inverter driving apparatus of the utility model and the 4th adjust the structural representation of circuit
Figure；
Fig. 5 is that the structure of IGBT parallel inverter circuit in a kind of high-power self-regulation inverter driving apparatus of the utility model is shown
It is intended to.
In figure: 1, control circuit 2, driving circuit 3, expansion current circuit 4, adjustment module
5, IGBT parallel inverter circuit 41, first adjusts circuit 42, second and adjusts circuit
43, third adjusts circuit the 44, the 4th and adjusts circuit 51, the first inverter module
52, the second inverter module 53, transformer 54, high-power welding machine
511, the first output end 521, second output terminal
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
As Figure 1-Figure 5, the utility model is a kind of high-power self-regulation inverter driving apparatus, for controlling IGBT simultaneously
Join the driving power of the base stage of transistor in inverter circuit 5 and open speed, including control circuit 1, driving circuit 2, expansion galvanic electricity
Road 3 and adjustment module 4, control circuit 1 are connect with driving circuit 2, and driving circuit 2 is connect with current circuit 3 is expanded, and expand current circuit 3
It is connect with adjustment module 4；Adjustment module 4 respectively in IGBT parallel inverter circuit 5 the first inverter module 51 and the second inversion
Module 52 connects, and for opening the first inverter module 51 and the second inverter module 52, and adjusts the first inverter module 51 and second
The electric current that inverter module 52 is exported；Adjustment module 4 includes that the first adjusting circuit 41, second adjusts circuit 42, third adjusts electricity
Road 43 and the 4th adjusts circuit 44.
Wherein, IGBT parallel inverter circuit 5 includes the first inverter module 51 and the second inverter module 52, the first inverter module
51 include transistor V1, V2, V3 and V4 and the first output end 511, and the second inverter module 52 includes transistor V5, V6, V7 and V8
Second output terminal 521；First inverter module 51 and the second inverter module 52 are connect with transformer 53 respectively, and transformer 53 is also and greatly
Power welding machine 54 connects；
Transistor V1 and transistor V2 are parallel with one another, and transistor V3 and transistor V4 are parallel with one another, transistor V1 and crystal
The emitter of pipe V2 is connect with the collector of transistor V3 and transistor V4 respectively, one end of the first output end 511 and transistor
The emitter of V1 is connected with the collector of transistor V3, the other end of the first output end 511 and the emitter and crystalline substance of transistor V2
The collector of body pipe V4 connects,
Transistor V5 and transistor V6 are parallel with one another, and transistor V7 and transistor V8 are parallel with one another, transistor V5 and crystal
The emitter of pipe V6 is connect with the collector of transistor V7 and transistor V8 respectively, one end of second output terminal 521 and transistor
The emitter of V5 is connected with the collector of transistor V7, the other end of second output terminal 521 and the emitter and crystalline substance of transistor V6
The collector of body pipe V8 connects,
First output end 511 and second output terminal 521 are connect with transformer 53 respectively, are exchanged for exporting to transformer 53
Electricity, after transformer 53 promotes the voltage of alternating current, by exchange electricity output to high-power welding machine 54.
Specifically, expanding current circuit 3 includes triode D1 and D2, the collector of triode D1 connects positive voltage terminal, triode
The emitter of D1 is connect with the emitter of triode D2, and the collector of triode D2 connects negative voltage side, the base stage of triode D1
Connect respectively with drive module with the base stage of triode D2, the emitter of the emitter of triode D1 and triode D2 respectively with tune
Module 4 is saved to connect.
Specifically, control circuit 1 is used for 2 output pulse width modulated signal of driving circuit, driving circuit 2 is according to pulse
Bandwidth modulation signals to expand 3 outputting drive voltage of current circuit.
Wherein, driving circuit 2 and being put to the base stage outputting drive voltage of triode D1 and D2 by triode D1 and D2
It is output to IGBT parallel inverter circuit 5 through adjustment module 4 again after big, improves high-power self-regulation inverter driving apparatus to IGBT
The driving power of parallel inverter circuit 5, and then ensure that the IGBT parallel inverter circuit 5 of high-power welding machine 54 being capable of normal work
Make.
Specifically, first adjusts circuit 41 and transistor V1 and V2 and the first output end in the first inverter module 51
511 connections；First adjusts circuit 41 including adjusting resistance RG1, RE1, RG2 and RE2, adjusting one end of resistance RG1 and expanding galvanic electricity
Road 3 connects, and the other end for adjusting resistance RG1 is connect with the base stage of transistor V1 in the first inverter module 51；Adjust resistance RG2's
One end is connect with current circuit 3 is expanded, and the other end for adjusting resistance RG2 is connect with the base stage of transistor V2 in the first inverter module 51；
The one end for adjusting resistance RE1 is connect with the first output end 511 respectively with the one end for adjusting resistance RE2, adjusts resistance
RE1 is also serially connected with resistance RE2 is adjusted, and adjusts resistance RE1 in the one end and the first inverter module 51 for adjusting resistance RE2
The emitter of transistor V1 connects, and adjusts resistance RE2 transistor in the one end and the first inverter module 51 for adjusting resistance RE1
The emitter of V2 connects；
Adjust resistance RE1 towards transistor V1 emitter one end also with adjust base of the resistance RG1 towards transistor V1
Pole one end connection, adjust resistance RE2 towards transistor V2 emitter one end also with adjust resistance RG2 towards transistor V2's
The connection of base stage one end.
Wherein, RS1 and RS2 is the equivalent impedance of the stray inductance and resistance in the first inverter module 51；Expand current circuit 3 to pass through
It adjusts resistance RG1 and exports starting voltage VG1 to the base stage of transistor V1, expand current circuit 3 through adjusting resistance RG2 to transistor V2's
Base stage output starting voltage VG2；Expand on current circuit 3 due to adjusting resistance RG1 and RG2 and being connected in parallel, thus it is guaranteed that
The service time of transistor V1 and transistor V2 is consistent；
When transistor V2 opens more early, the electric current of transistor V2 output will be greater than the electric current of transistor V1 output；RS2 two
The voltage that end generates will be greater than the voltage of the both ends RS1 generation, therefore will generate circulation I, and circulation I will be at the both ends RE2 and RE1
Generate voltage, also, the voltage direction at the both ends RE2 and RE1 be it is opposite, therefore, the voltage at the both ends RE1 will increase starting voltage
The voltage value of VG1 accelerates transistor V1 open-minded, and the voltage value of low start voltage VG2 can drop in the voltage at the both ends RE2, make crystalline substance
The speed of opening of body pipe V2 slows down, until transistor V1 and transistor V2 open speed it is consistent when, circulation I will disappear, at this point,
Flowing through transistor V1 will be consistent with the current value of V2, and then plays and carry out self tune to the speed of opening of the first inverter module 51
The effect of section.
Specifically, second adjusts circuit 42 and transistor V3 and V4 and the first output end in the first inverter module 51
511 connections；Second adjusts circuit 42 including adjusting resistance RG3, RE3, RG4 and RE4, adjusting one end of resistance RG3 and expanding galvanic electricity
Road 3 connects, and the other end for adjusting resistance RG3 is connect with the base stage of transistor V3 in the second inverter module 52；Adjust resistance RG4's
One end is connect with current circuit 3 is expanded, and the other end for adjusting resistance RG4 is connect with the base stage of transistor V4 in the first inverter module 51；
The one end for adjusting resistance RE3 is connect with the first output end 511 respectively with the one end for adjusting resistance RE4, adjusts resistance
RE3 is also serially connected with resistance RE4 is adjusted, and adjusts resistance RE3 in the one end and the first inverter module 51 for adjusting resistance RE4
The emitter of transistor V3 connects, adjust resistance RE4 backwards to adjust one end of resistance RE3 with crystal in the first inverter module 51
The emitter of pipe V4 connects；
Adjust resistance RE3 towards transistor V3 emitter one end also with adjust base of the resistance RG3 towards transistor V3
Pole one end connection, adjust resistance RE4 towards transistor V4 emitter one end also with adjust resistance RG4 towards transistor V4's
The connection of base stage one end.
Wherein, RS3 and RS4 is the equivalent impedance of the stray inductance and resistance in the first inverter module 51；Expand current circuit 3 to pass through
It adjusts resistance RG3 and exports starting voltage VG3 to the base stage of transistor V3, expand current circuit 3 through adjusting resistance RG4 to transistor V4's
Base stage output starting voltage VG4；Expand on current circuit 3 due to adjusting resistance RG3 and RG4 and being connected in parallel, thus it is guaranteed that
The service time of transistor V3 and transistor V4 is consistent；
When transistor V4 opens more early, the electric current of transistor V4 output will be greater than the electric current of transistor V3 output；RS4 two
The voltage that end generates will be greater than the voltage of the both ends RS3 generation, therefore will generate circulation I, and circulation I will be at the both ends RE4 and RE3
Generate voltage, also, the voltage direction at the both ends RE4 and RE3 be it is opposite, therefore, the voltage at the both ends RE3 will increase starting voltage
The voltage value of VG3 accelerates transistor V3 open-minded, and the voltage value of low start voltage VG4 can drop in the voltage at the both ends RE4, make crystalline substance
The speed of opening of body pipe V4 slows down, until transistor V3 and transistor V4 open speed it is consistent when, circulation I will disappear, at this point,
Flowing through transistor V3 will be consistent with the current value of V4, and then plays and carry out self tune to the speed of opening of the first inverter module 51
The effect of section.
Specifically, third adjusts circuit 43 and transistor V5 and V6 and second output terminal in the second inverter module 52
521 connections；It includes adjusting resistance RG5, RE5, RG6 and RE6 that third, which adjusts circuit 43, adjusts one end of resistance RG5 and expands galvanic electricity
Road 3 connects, and the other end for adjusting resistance RG5 is connect with the base stage of transistor V5 in the second inverter module 52；Adjust resistance RG6
One end with expand current circuit 3 connect, adjust resistance RG6 the other end with in the second inverter module 52 transistor V6 base stage company
It connects；
The one end for adjusting resistance RE5 is connect with second output terminal 521 respectively with the one end for adjusting resistance RE6, adjusts resistance
RE5 with adjust resistance RE6 be also serially connected, adjust resistance RE5 backwards to adjust resistance RE6 one end with the second inverter module 52
The emitter of middle transistor V5 connects, adjust resistance RE6 backwards to adjust one end of resistance RE5 with it is brilliant in the second inverter module 52
The emitter of body pipe V6 connects；
Adjust resistance RE5 towards transistor V5 emitter one end also with adjust base of the resistance RG5 towards transistor V5
Pole one end connection, adjust resistance RE6 towards transistor V6 emitter one end also with adjust resistance RG6 towards transistor V6's
The connection of base stage one end.
Wherein, RS5 and RS6 is the equivalent impedance of the stray inductance and resistance in the second inverter module 52；Expand current circuit 3 to pass through
It adjusts resistance RG5 and exports starting voltage VG5 to the base stage of transistor V5, expand current circuit 3 through adjusting resistance RG6 to transistor V6's
Base stage output starting voltage VG6；Expand on current circuit 3 due to adjusting resistance RG5 and RG6 and being connected in parallel, thus it is guaranteed that
The service time of transistor V5 and transistor V6 is consistent；
When transistor V6 opens more early, the electric current of transistor V6 output will be greater than the electric current of transistor V5 output；RS6 two
The voltage that end generates will be greater than the voltage of the both ends RS5 generation, therefore will generate circulation I, and circulation I will be at the both ends RE6 and RE5
Generate voltage, also, the voltage direction at the both ends RE6 and RE5 be it is opposite, therefore, the voltage at the both ends RE5 will increase starting voltage
The voltage value of VG5 accelerates transistor V5 open-minded, and the voltage value of low start voltage VG6 can drop in the voltage at the both ends RE6, make crystalline substance
The speed of opening of body pipe V6 slows down, until transistor V5 and transistor V6 open speed it is consistent when, circulation I will disappear, at this point,
Flowing through transistor V5 will be consistent with the current value of V6, and then plays and carry out self tune to the speed of opening of the second inverter module 52
The effect of section.
Specifically, the 4th adjusts circuit 44 and transistor V7 and V8 and second output terminal in the second inverter module 52
521 connections；4th adjusts circuit 44 including adjusting resistance RG7, RE7, RG8 and RE8, adjusting one end of resistance RG7 and expanding galvanic electricity
Road 3 connects, and the other end for adjusting resistance RG7 is connect with the base stage of transistor V7 in the second inverter module 52；Adjust resistance RG8's
One end is connect with current circuit 3 is expanded, and the other end for adjusting resistance RG8 is connect with the base stage of transistor V8 in the second inverter module 52；
The one end for adjusting resistance RE7 is connect with second output terminal 521 respectively with the one end for adjusting resistance RE8, adjusts resistance
RE7 is also serially connected with resistance RE8 is adjusted, and adjusts resistance RE7 in the one end and the second inverter module 52 for adjusting resistance RE8
The emitter of transistor V7 connects, and adjusts resistance RE8 transistor in the one end and the second inverter module 52 for adjusting resistance RE7
The emitter of V8 connects；
Adjust resistance RE7 towards transistor V7 emitter one end also with adjust base of the resistance RG7 towards transistor V7
Pole one end connection, adjust resistance RE8 towards transistor V8 emitter one end also with adjust resistance RG8 towards transistor V8's
The connection of base stage one end.
Wherein, RS7 and RS8 is the equivalent impedance of the stray inductance and resistance in the second inverter module 52；Expand current circuit 3 to pass through
It adjusts resistance RG7 and exports starting voltage VG7 to the base stage of transistor V7, expand current circuit 3 through adjusting resistance RG8 to transistor V8's
Base stage output starting voltage VG8；Expand on current circuit 3 due to adjusting resistance RG7 and RG8 and being connected in parallel, thus it is guaranteed that
The service time of transistor V7 and transistor V8 is consistent；
When transistor V8 opens more early, the electric current of transistor V8 output will be greater than the electric current of transistor V7 output；RS8 two
The voltage that end generates will be greater than the voltage of the both ends RS7 generation, therefore will generate circulation I, and circulation I will be at the both ends RE8 and RE7
Generate voltage, also, the voltage direction at the both ends RE8 and RE7 be it is opposite, therefore, the voltage at the both ends RE7 will increase starting voltage
The voltage value of VG7 accelerates transistor V7 open-minded, and the voltage value of low start voltage VG8 can drop in the voltage at the both ends RE8, make crystalline substance
The speed of opening of body pipe V8 slows down, until transistor V7 and transistor V8 open speed it is consistent when, circulation I will disappear, at this point,
Flowing through transistor V7 will be consistent with the current value of V8, and then plays and carry out self tune to the speed of opening of the second inverter module 52
The effect of section.
Specifically, transistor V1, V2, V3, V4, V5, V6, V7 and V8 in IGBT parallel inverter circuit 5 are respectively NPN type
Triode.
Preferably, triode D1 is NPN type triode, and triode D2 is PNP type triode.
Preferably, the voltage of positive voltage terminal is+15V, and the voltage of negative voltage side is -15V.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of high-power self-regulation inverter driving apparatus, for controlling the drive of the base stage of transistor in IGBT parallel inverter circuit
It moves power and opens speed, which is characterized in that including control circuit, driving circuit, expand current circuit and adjustment module, the control
Circuit processed is connect with driving circuit, and the driving circuit is connect with the expansion current circuit, the expansion current circuit and the adjusting mould
Block connection；The adjustment module respectively in the IGBT parallel inverter circuit the first inverter module and the second inverter module connect
It connects, for opening first inverter module and the second inverter module, and adjusts first inverter module and the second inversion mould
The electric current that block is exported；The adjustment module includes the first adjusting circuit, the second adjusting circuit, third adjusting circuit and the 4th tune
Economize on electricity road.
2. a kind of high-power self-regulation inverter driving apparatus according to claim 1, which is characterized in that the expansion current circuit
Including triode D1 and D2, the collector of the triode D1 connects positive voltage terminal, the emitter of the triode D1 with it is described
The emitter of triode D2 connects, and the collector of the triode D2 connects negative voltage side, the base stage and three of the triode D1
The base stage of pole pipe D2 is connect with drive module respectively, and the emitter of the emitter of the triode D1 and the triode D2 are distinguished
It is connect with adjustment module.
3. a kind of high-power self-regulation inverter driving apparatus according to claim 1, which is characterized in that the control circuit
For to the driving circuit output pulse width modulated signal, the driving circuit according to the pulse width modulating signal to
The expansion current circuit outputting drive voltage.
4. a kind of high-power self-regulation inverter driving apparatus according to claim 1, which is characterized in that described first is adjusted
Transistor V1 and V2 and the connection of the first output end in circuit and the first inverter module；Described first adjusts circuit including adjusting
Economize on electricity resistance RG1, RE1, RG2 and RE2, described one end for adjusting resistance RG1 are connect with the expansion current circuit, the adjusting resistance
The other end of RG1 is connect with the base stage of transistor V1 in the first inverter module；Described one end for adjusting resistance RG2 and the expansion are flowed
Circuit connection, the other end for adjusting resistance RG2 are connect with the base stage of transistor V2 in the first inverter module；
Described one end for adjusting resistance RE1 is connect with the first output end respectively with described one end for adjusting resistance RE2, the adjusting
Resistance RE1 is also serially connected with the adjusting resistance RE2, it is described adjust resistance RE1 backwards to adjust resistance RE2 one end with it is described
In first inverter module transistor V1 emitter connection, it is described adjust resistance RE2 backwards to adjust resistance RE1 one end with it is described
The emitter connection of transistor V2 in first inverter module；
Adjust resistance RE1 towards transistor V1 emitter one end also with adjust base stage one of the resistance RG1 towards transistor V1
End connection, adjust resistance RE2 towards transistor V2 emitter one end also with adjust base stage of the resistance RG2 towards transistor V2
One end connection.
5. a kind of high-power self-regulation inverter driving apparatus according to claim 1, which is characterized in that described second is adjusted
Transistor V3 and V4 and the connection of the first output end in circuit and the first inverter module；Described second adjusts circuit including adjusting
Economize on electricity resistance RG3, RE3, RG4 and RE4, described one end for adjusting resistance RG3 are connect with the expansion current circuit, the adjusting resistance
The other end of RG3 is connect with the base stage of transistor V3 in the second inverter module；Described one end for adjusting resistance RG4 and the expansion are flowed
Circuit connection, the other end for adjusting resistance RG4 are connect with the base stage of transistor V4 in the first inverter module；
Described one end for adjusting resistance RE3 is connect with the first output end respectively with described one end for adjusting resistance RE4, the adjusting
Resistance RE3 is also serially connected with the adjusting resistance RE4, it is described adjust resistance RE3 backwards to adjust resistance RE4 one end with it is described
In first inverter module transistor V3 emitter connection, it is described adjust resistance RE4 backwards to adjust resistance RE3 one end with it is described
It is connect with the emitter of transistor V4 in the first inverter module；
Adjust resistance RE3 towards transistor V3 emitter one end also with adjust base stage one of the resistance RG3 towards transistor V3
End connection, adjust resistance RE4 towards transistor V4 emitter one end also with adjust base stage of the resistance RG4 towards transistor V4
One end connection.
6. a kind of high-power self-regulation inverter driving apparatus according to claim 1, which is characterized in that the third is adjusted
Transistor V5 and V6 and second output terminal connection in circuit and the second inverter module；It includes adjusting that the third, which adjusts circuit,
Economize on electricity resistance RG5, RE5, RG6 and RE6, described one end for adjusting resistance RG5 are connect with the expansion current circuit, the adjusting resistance
The other end of RG5 is connect with the base stage of transistor V5 in the second inverter module；Described one end for adjusting resistance RG6 and the expansion are flowed
Circuit connection, the other end for adjusting resistance RG6 are connect with the base stage of transistor V6 in the second inverter module；
Described one end for adjusting resistance RE5 is connect with second output terminal respectively with described one end for adjusting resistance RE6, the adjusting
Resistance RE5 is also serially connected with the adjusting resistance RE6, it is described adjust resistance RE5 backwards to adjust resistance RE6 one end with it is described
It is connect with the emitter of transistor V5 in the second inverter module, the resistance RE6 that adjusts is backwards to the one end and institute for adjusting resistance RE5
It states and is connect with the emitter of transistor V6 in the second inverter module；
Adjust resistance RE5 towards transistor V5 emitter one end also with adjust base stage one of the resistance RG5 towards transistor V5
End connection, adjust resistance RE6 towards transistor V6 emitter one end also with adjust base stage of the resistance RG6 towards transistor V6
One end connection.
7. a kind of high-power self-regulation inverter driving apparatus according to claim 1, which is characterized in that the described 4th is adjusted
Transistor V7 and V8 and second output terminal connection in circuit and the second inverter module；Described 4th adjusts circuit including adjusting
Economize on electricity resistance RG7, RE7, RG8 and RE8, described one end for adjusting resistance RG7 are connect with the expansion current circuit, the adjusting resistance
The other end of RG7 is connect with the base stage of transistor V7 in the second inverter module；Described one end for adjusting resistance RG8 and the expansion are flowed
Circuit connection, the other end for adjusting resistance RG8 are connect with the base stage of transistor V8 in the second inverter module；
Described one end for adjusting resistance RE7 is connect with second output terminal respectively with described one end for adjusting resistance RE8, the adjusting
Resistance RE7 is also serially connected with the adjusting resistance RE8, it is described adjust resistance RE7 backwards to adjust resistance RE8 one end with it is described
In second inverter module transistor V7 emitter connection, it is described adjust resistance RE8 backwards to adjust resistance RE7 one end with it is described
The emitter connection of transistor V8 in second inverter module；
Adjust resistance RE7 towards transistor V7 emitter one end also with adjust base stage one of the resistance RG7 towards transistor V7
End connection, adjust resistance RE8 towards transistor V8 emitter one end also with adjust base stage of the resistance RG8 towards transistor V8
One end connection.
8. a kind of high-power self-regulation inverter driving apparatus according to claim 1, which is characterized in that the IGBT is in parallel
Transistor V1, V2, V3, V4, V5, V6, V7 and V8 in inverter circuit are respectively NPN type triode.
9. a kind of high-power self-regulation inverter driving apparatus according to claim 2, which is characterized in that the triode D1
For NPN type triode, the triode D2 is PNP type triode.
10. a kind of high-power self-regulation inverter driving apparatus according to claim 2, which is characterized in that the positive voltage
The voltage at end is+15V, and the voltage of the negative voltage side is -15V.
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| CN109660114A (en) * | 2019-02-26 | 2019-04-19 | 深圳英飞源技术有限公司 | A kind of driving circuit of multi-channel parallel metal-oxide-semiconductor |
| CN109873552A (en) * | 2019-04-25 | 2019-06-11 | 北京大学邯郸创新研究院 | A kind of main circuit of converter and frequency converter based on IGBT pipe |
| WO2020134134A1 (en) * | 2018-12-29 | 2020-07-02 | 中兴通讯股份有限公司 | Switch circuit and switch power supply |
| CN111446848A (en) * | 2020-04-28 | 2020-07-24 | 上海爻火微电子有限公司 | Power supply circuit with adjustable channel switch impedance and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020134134A1 (en) * | 2018-12-29 | 2020-07-02 | 中兴通讯股份有限公司 | Switch circuit and switch power supply |
| CN109660114A (en) * | 2019-02-26 | 2019-04-19 | 深圳英飞源技术有限公司 | A kind of driving circuit of multi-channel parallel metal-oxide-semiconductor |
| CN109660114B (en) * | 2019-02-26 | 2024-04-23 | 深圳英飞源技术有限公司 | Driving circuit of multipath parallel MOS (metal oxide semiconductor) tubes |
| CN109873552A (en) * | 2019-04-25 | 2019-06-11 | 北京大学邯郸创新研究院 | A kind of main circuit of converter and frequency converter based on IGBT pipe |
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