CN104638901B - Energy-saving type IGBT (insulated gate bipolar transistor) serial inverting medium-frequency power source device - Google Patents
Energy-saving type IGBT (insulated gate bipolar transistor) serial inverting medium-frequency power source device Download PDFInfo
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- CN104638901B CN104638901B CN201510096901.XA CN201510096901A CN104638901B CN 104638901 B CN104638901 B CN 104638901B CN 201510096901 A CN201510096901 A CN 201510096901A CN 104638901 B CN104638901 B CN 104638901B
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention relates to an energy-saving type IGBT (insulated gate bipolar transistor) serial inverting medium-frequency power source device. The energy-saving type IGBT serial inverting medium-frequency power source device comprises an IGBT serial inverting circuit, a rectifying main circuit, a driving power source circuit, a pressure-controlled oscillation circuit, a rectifying pulse forming circuit and a protection signal circuit which are electrically connected. The energy-saving type IGBT serial inverting medium-frequency power source device has the advantages that the power factor is high, the harmonic pollution is little, the circuit loss is small, the electric consumption amount is little, the melting speed is high, the energy source is saved, and the pollution to a power grid and environments is avoided.
Description
Technical field
The present invention relates to a kind of energy-saving IGBT series resonant inverters intermediate frequency power supply device, belongs to frequency-changing and current transforming technology and casting skill
Art field.
Background technology
As sensing heating application increasingly constantly expands, and the continuous development of power semiconductor device technology, together
When be to respond the call that national energy-saving reduces discharging policy, intermediate frequency induction heating power supply forward direction energy-conservation, it is quick, send out without harmonic wave interference radiating way
Exhibition.Then it is by control steering Digital Control development is simulated, to improve the integrated level of control system and stablize in control system
Property；In terms of Based Intelligent Control, by automatic controlling devices such as PLC and configuration softwares, the intellectuality of complete equipment is done step-by-step；
Inversion form aspect, then developed from parallel inverter in terms of series resonant inverter, to improve output voltage, reduces mesh current, is reduced
Line loss.
The fusing form that at present country's foundry industry is adopted is essentially two kinds, and one is that two is to adopt using coke cupola melting
Melted with traditional thyristor intermediate frequency electric source in parallel (KGPS)；Coke cupola melting formal cause inefficiency, energy waste
Seriously, environmental pollution is serious, and the shortcomings of be difficult to control to casting quality, has been prohibitted the use of by country at present；It is in parallel controllable
Silicon intermediate frequency power supply adopts pressure regulation Power Regulation because of it, and load adopts parallel resonance mode, so its power factor can not be remained at
More than 0.93, power factor is then relatively low during low power run, and harmonic pollution is serious, and current distortion is higher, and in addition parallel inverter is
A kind of current mode inversion, the big line loss of voltage low current is serious.Both firing equipment inefficiencys, energy waste is tight
Weight, it is serious to electrical network and environmental pollution.
The content of the invention
The technical problem to be solved in the present invention is not enough for more than, there is provided a kind of power factor is high, harmonic pollution is little, line
Path loss consumes little, the energy-saving IGBT series resonant inverters intermediate frequency power supply device that power consumption is low, burn-off rate is fast, has saved the energy, it is to avoid
Pollution to electrical network and environment.
To solve above technical problem, the present invention is employed the following technical solutions：Energy-saving IGBT series resonant inverters intermediate frequency power supply
Device, including IGBT Serial inverting circuits, rectification main circuit, driving power supply circuit, Voltage-Controlled oscillation circuit, the rectification arteries and veins of electrical connection
Punching forms circuit and protection signal circuit.
The protection signal circuit includes IC 5, IC6 and IC7, and IC 5 includes IC5A and IC5B two
Part, IC 6 includes IC6A and IC6B two parts, and IC 7 includes IC7A and IC7B two parts.
Resistance R20, R21 and R22 that 5th foot of the IC 5 is concatenated connects the 6th foot of IC 5, collection
Into one end of the 6th foot connecting resistance R22 of IC circuit 5, the other end Jing resistance R26 of resistance R22 is grounded, the other end of resistance R22
Jing resistance R25 connect the 2nd foot of IC 5, the 4th foot ground connection of IC 5, the 8th foot meridian capacitor of IC 5
C20 is grounded, and the 8th foot of IC 5 meets VCC, and the 3rd foot Jing resistance R27 of IC 5 meet VCC.
Resistance R23 and diode D12 that 7th foot of the IC 5 is concatenated connect the colelctor electrode of audion Q2, collection
The resistance R23 and resistance R24 that are concatenated into the 7th foot of IC circuit 5 connect the 5th foot of IC 6.
8th foot of the IC 6 connects VCC, the 4th foot ground connection of IC 6, the 6th foot of IC 6
Jing resistance R28 meet VCC, and the 6th foot Jing resistance R29 ground connection of IC 6, the 6th foot of IC 6 connects integrated circuit
2nd foot of IC6.
Resistance R30 and resistance R31 that 1st foot of the IC 5 is concatenated connect the 3rd foot of IC 6, collection
The resistance R30 and diode D17 that are concatenated into the 1st foot of IC circuit 5 connect the colelctor electrode of audion Q2.
Resistance R32 and light emitting diode D13 ground connection that 7th foot of the IC 6 is concatenated, IC 6
The diode D14 that is concatenated of the 7th foot and resistance R34 ground connection, diode D15 and electricity that the 1st foot of IC 6 is concatenated
Resistance R34 ground connection, resistance R33 and light emitting diode D16 ground connection that the 1st foot of IC 6 is concatenated.
Diode D14 and resistance R35 that 7th foot of the IC 6 is concatenated connect the 2nd foot of IC 7,
3rd foot of IC 7 connects the 5th foot of IC 7, one end of the 1st foot connecting resistance R36 of IC 7, resistance
The negative pole of another terminating diode D19 of R36.
The positive pole Jing electric capacity C21 ground connection of the diode D19, the positive pole Jing resistance R37 of diode D19 connect VCC, integrated electricity
The 3rd foot Jing resistance R39 ground connection of road IC7, one end of the 3rd foot connecting resistance R38 of IC 7, another termination of resistance R38
One end of resistance R40 and the negative pole of diode D18, the other end of resistance R40 and the positive pole Jing resistance R41 of diode D18 connect collection
Into the 6th foot of IC circuit 7, the positive pole Jing electric capacity C23 of diode D18 is grounded, the 4th foot ground connection of the IC 7, integrated
The 8th foot meridian capacitor C22 ground connection of IC circuit 7, the 7th foot Jing resistance R42 of IC 7 connect the base stage of audion Q2, three poles
The emitter stage polar region of pipe Q2.
The IC 5, IC6 and IC7 are dual operational amplifier LM358.
The present invention is adopted after above technical scheme, compared with prior art, with advantages below：
1st, power factor is high, and harmonic pollution is little：The power factor of energy-saving IGBT series resonant inverters intermediate frequency power supply device is all the time
More than 0.95, harmonic content is little, and less than the requirement of country's " odd harmonic and even-order harmonic sum are less than 5% ", even-order harmonic is little
In 2%, odd harmonic and even-order harmonic sum are less than 5%, meet national standard（GB/T14549-93）《Quality of power supply utility network
Harmonic wave》Requirement.
2nd, line loss is little, and power consumption is low, than like product energy-conservation 25%-30%：Output par, c medium frequency electric in this invention
Pressure is high（2800V）, output current little (2.5-3 times of DC current), and at present the output voltage of other intermediate frequency power supplies is up to
1500V, output current is 5-6 times of DC current, by taking 600KW equipment as an example, energy-saving IGBT series resonant inverters intermediate frequency power supply dress
The voltage of intermediate frequency put is 2800V, and electric current of intermediate frequency is 3600A, and the voltage of intermediate frequency of common controllable silicon equipment is 1500V, medium frequency electric
Flow for 6800A, it is assumed that the internal resistance of output par, c is r, then line loss is respectively：Energy-saving IGBT series resonant inverters intermediate frequency power supply dress
Line loss P1=I2r=(3600) 2*r for putting, line loss P2=I2r=(6800) 2*r of common thyristor intermediate frequency electric source, it is general
The line loss of logical thyristor intermediate frequency electric source is far longer than the line loss of energy-saving IGBT series resonant inverters intermediate frequency power supply assembling.
Power consumption aspect, the ton power consumption of energy-saving IGBT series resonant inverters intermediate frequency power supply device is 520-550 degree, and current
Both at home and abroad the power consumption of advanced controllable silicon smelting equipment is 650-680 degree, can save energy 25%-30%.
3rd, constant power output, burn-off rate is fast：Energy-saving IGBT series resonant inverters intermediate frequency power supply device in this invention, be
The currently the only equipment that can realize constant power output, by taking 600KW equipment as an example, one stove of fusing needs 55 minutes altogether, wherein having
The time service of 53 minutes reaches 96% in invariable power state, invariable power time, and this is that miscellaneous equipment is beyond one's reach；
On the one hand because energy-saving IGBT series resonant inverters intermediate frequency power supply device realizes invariable power, 96% is reached, additionally, due to
Energy-saving IGBT series resonant inverters intermediate frequency power supply device intermediate frequency power supply voltage of intermediate frequency is high, and electromagnetic coupled efficiency high reaches 98%, two sides
Face reason causes energy-saving IGBT series resonant inverters intermediate frequency power supply device burn-off rate especially fast, only 20 points of 150KG/300KW equipment
Zhong Yilu, ton power consumption：550 degree, 45 minutes stoves of 1000KG/700KW equipment, 520 degree of ton power consumption, miscellaneous equipment cannot
Reach this kind of speed.
With reference to the accompanying drawings and examples the present invention is described in detail.
Description of the drawings
Accompanying drawing 1 is the IGBT Serial inverting circuits of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention
Schematic diagram；
Accompanying drawing 2 is the rectification main circuit principle of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention
Figure；
Accompanying drawing 3 is the driving power supply circuit theory of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention
Figure；
Accompanying drawing 4 is the Voltage-Controlled oscillation circuit principle of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention
Figure；
Accompanying drawing 5 is that the commutating pulse of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention forms circuit
Schematic diagram；
Accompanying drawing 6 is the protection signal circuit theory of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention
Figure；
Accompanying drawing 7 is the power factor change figure of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention；
Accompanying drawing 8 is that 5 subharmonic of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention contain spirogram；
Accompanying drawing 9 is that 7 subharmonic of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention contain spirogram；
Accompanying drawing 10 is the changed power curve figure of energy-saving IGBT series resonant inverters intermediate frequency power supply device in the embodiment of the present invention.
Specific embodiment
Embodiment, energy-saving IGBT series resonant inverters intermediate frequency power supply device includes the IGBT Serial inverting circuits, whole of electrical connection
Stream main circuit, driving power supply circuit, Voltage-Controlled oscillation circuit, commutating pulse form circuit and protection signal circuit.
As shown in Figure 1, IGBT Serial inverting circuits include IGBT module T1, T2, T3, T4 and capacitor C1, C2, inversion
Device constitutes half-bridge converter by IGBT module T1, T2, T3, T4 and capacitor C1, C2, and the gate pole of IGBT module T1 meets electric capacity CF1
Positive pole, the negative pole of electric capacity CF1 connects the positive pole of electric capacity CF2, and the negative pole of electric capacity CF2 connects the emitter stage of IGBT module T2, IGBT moulds
The colelctor electrode of block T2 connects the emitter stage of IGBT module T1, the colelctor electrode of IGBT module T1 connect respectively the colelctor electrode of IGBT module T3 and
One end of electric capacity C1, the emitter stage of IGBT module T3 connects the emitter stage of IGBT module T1, and the emitter stage of IGBT module T3 is sensed
The equivalent inductance and resistance L, R of stove connect the other end of electric capacity C1, one end of another termination capacitor C2 of electric capacity C1, and electric capacity C2's is another
The emitter stage of one termination IGBT module T4.
The specification of C1, C2 is identical, and L, R are the equivalent inductance and resistance of induction furnace.
Its course of work is as follows：Constant DC voltage is added between positive pole and cathode bus bar, and by electric capacity C1, C2 divides equally,
They all just descend negative voltage filled with upper, now, trigger T1, T3, then the electric current for flowing through induction furnace is made up of two parts.One is C1
Discharge stream：C1 upper ends-T1, T3-L, R-C1 lower end, another road is the charging current of C2：CFUpper end T1, T3-L, R-CFLower end.This
Two-way is all a part for same resonance circuit, and the former is made up of C1, L, R, and the latter is made up of C2, L, R.Due to C1=C2, thus
Two circuit work frequencies are identical, equal to the resonant frequency by C=C1+C2, L, R built-up circuit.Terminate when C1 discharges, thereon voltage
Must be U for the upper charging voltages of 0, C2D, because CFBoth end voltage UDConstant, its value is equal to the upper voltage sum of C1, C2.At this moment flow through
The electric current of L, R is maximum, under the magnetic field energy effect stored in L, maintains above-mentioned two-way electric current to continue to circulate, and makes C1 reverse chargings
Just above bear into lower, and C2 is then from UDValue continues to raise, until magnetic field energy is down to 0.At this moment, voltage all reaches on the upper back-pressures of C1 and C2
To maximum, the electric current that induction furnace L is flow through to this is just half just profound ripple.Then in the presence of capacitance voltage, two are formed
Road and aforementioned two-way path are essentially identical（Simply the pipe of afterflow two in module replaces T1, T3 stream electric current）, direction it is antipodal
Electric current, this electric current still by the change of just profound rule, until C1 again positive charge to 1/2UD, the voltage of C2 also reverts to 1/2UD, electric current
0 is down to, the electric current for flowing through induction furnace is just a just profound negative half-wave.Then T2, T4, i.e. C2 Jing L, R, T2, T4 electric discharge, C1 are triggered
Jing L, R, T2, T4 are electrically charged, and the electric current for flowing through induction furnace is equally made up of two parts, and its frequency is equal to L, R, C (=C1+C2)
The resonant frequency of built-up circuit.So, the power frequency for flowing through induction furnace must be identical.
The above-mentioned course of work, load presses the circuit natural oscillation half period from power supply acquisition energy, and another half period is again by energy
Amount sends power supply back to.Therefore, the power very little that load is obtained, to make load obtain peak power, it is necessary to make triggering frequency be close to electricity
The natural mode shape on road.
Series resonant inverter is voltage-type resonance, the pressure drop value in pressure drop and electric capacity C during power work, on body of heater coil L
Equal and in opposite direction their value is high compared with supply voltage 3-5 times, and controllable silicon parallel resonance, the voltage on induction coil only has electric
1.5 times or so of source voltage, and the loss power P=I of coil2R, due in IGBT series resonances being that voltage is high and electric current is little, can
Control silicon parallel resonance is that voltage is low and electric current big, so, IGBT series resonance line losses are little.
As shown in Figure 2, rectification main circuit includes inductance TA, inductance TB and inductance TC, inductance TA, inductance TB and inductance TC
A termination chopper, the other end of inductance TA meets respectively the positive pole of commutation diode D7, one end of electric capacity C7 and diode D1
Positive pole, the other end Jing resistance R1 of electric capacity C7 connect the negative pole of commutation diode D7, and the negative pole Jing resistance Ra of diode D1 connect whole
The negative pole of stream diode D7, the other end of inductance TA connects respectively the negative pole of diode D4 and one end of electric capacity C4, and electric capacity C4's is another
One end Jing resistance R4 connect the positive pole of diode D4；
The other end of inductance TB connects respectively the positive pole of the positive pole of commutation diode D8, one end of electric capacity C3 and diode D3,
The other end Jing resistance R3 of electric capacity C3 connect the negative pole of commutation diode D8, and the negative pole Jing resistance Rb of diode D3 connect commutation diode
The negative pole of D8, the other end of inductance TB connects respectively the negative pole of diode D6 and one end of electric capacity C6, and the other end Jing of electric capacity C6 is electric
Resistance R6 connects the positive pole of diode D6；
The other end of inductance TC connects respectively the positive pole of the positive pole of commutation diode D9, one end of electric capacity C5 and diode D5,
The other end Jing resistance R5 of electric capacity C5 connect the negative pole of commutation diode D9, and the negative pole Jing resistance Rc of diode D5 connect commutation diode
The negative pole of D9, the other end of inductance TC connects respectively the negative pole of diode D2 and one end of electric capacity C8, and the other end Jing of electric capacity C8 is electric
Resistance R2 connects the positive pole of diode D2.
Using half control commutation technique, make rectification thyristor all the time in fully conducting state, DC voltage is remained at
500V, it is to avoid realize the harmonic pollution that Power Regulation brings using by the angle of flow of adjustment rectification thyristor.Power adjustments are adopted
Frequency modulation Power Regulation, the power factor for making circuit remains at more than 95%, can realize energy-conservation.
As shown in Figure 3, driving power supply circuit includes IC 1 and IC 2, and IC 1 is whole
Stream bridge heap KBPC610, the "+" end Jing electric capacity C9 ground connection of IC 1, the "-" end ground connection of IC 1, integrated circuit
The "+" end Jing electric capacity C10 ground connection of IC1, the "+" end Jing resistance R7 of IC 1 connect the base stage of audion Q1, audion Q1's
Emitter stage connects the "+" end of IC 1, and the colelctor electrode Jing electric capacity C12 ground connection of audion Q1, the colelctor electrode Jing of audion Q1 is electric
Hold C11 ground connection, resistance R8 and light emitting diode D10 ground connection that the colelctor electrode of audion Q1 is concatenated, the colelctor electrode of audion Q1
The Vout ends of IC 2 are connect, the Vin of IC 2 terminates the emitter stage of audion Q1, the GND ends of IC 2
Ground connection, IC 2 is three terminal regulator 7815.
As shown in Figure 4, Voltage-Controlled oscillation circuit includes IC 3, and IC 3 is CD4046, integrated circuit
The R2 of IC3 terminates one end of variable resistance R9, the other end Jing resistance R13 ground connection of variable resistance R9, the R1 ends of IC 3
One end of variable resistance R10 is connect, the other end Jing resistance R14 ground connection of variable resistance R10, the CB ends Jing of IC 3 is in parallel
Electric capacity C13 and electric capacity C14 connect the CA ends of IC 3, the INH ends ground connection of IC 3, IC 3
VCIN ends Jing resistance R11 meet VCIN, and VCIN is the output of pi regulator, and pi regulator input is respectively Power Regulation voltage TG（It is negative
Value）, phase contrast VZ（On the occasion of）, the resistance R12 and electric capacity C15 ground connection of the VCIN ends Jing parallel connections of IC 3.
As shown in Figure 5, commutating pulse forms circuit includes IC 4, and IC 4 is Switching Power Supply control
Device KA3525A, the EAOUT ends of EA (-) the termination IC 4 of IC 4, EA (+) the termination collection of IC 4
Into the SOFTSTART ends of IC circuit 4, the CT of IC 4 terminates the DISCHARGE ends of IC 4, integrated circuit
The RT ends Jing resistance R15 ground connection of IC4, the CT ends Jing electric capacity C16 ground connection of IC 4, the SHUA DOWN of IC 4
Resistance R16 and electric capacity C17 end Jing in parallel is grounded, the OUTA ends Jing resistance R17 ground connection of IC 4, IC 4
GND ends are grounded, and the VC ends Jing resistance R18 of IC 4 connect+15V voltages, and the Vcc of IC 4 terminates+15V voltages,
The electric capacity C18 and electric capacity C19 Vcc ends Jing of IC 4 in parallel is grounded, the OUTA termination field effect transistor of IC 4
The G ends of Q3, the S ends ground connection of field effect transistor Q3, the resistance R19 and light emitting diode D11 that the D ends of field effect transistor Q3 are concatenated meets master
1 pin of control plate lead-out terminal CON11, model IRF630N of field effect transistor Q3.
As shown in Figure 6, protection signal circuit includes IC 5, IC6 and IC7, IC 5, IC6 and IC7
Be dual operational amplifier LM358, IC 5 includes IC5A and IC5B two parts, IC 6 include IC6A and
IC6B two parts, IC 7 includes IC7A and IC7B two parts, resistance R20 that the 5th foot of IC 5 is concatenated,
R21 and R22 connect the 6th foot of IC 5, one end of the 6th foot connecting resistance R22 of IC 5, and resistance R22's is another
End Jing resistance R26 ground connection, the other end Jing resistance R25 of resistance R22 connect the 2nd foot of IC 5, and the 4th of IC 5 the
Foot is grounded, and the 8th foot meridian capacitor C20 ground connection of IC 5, the 8th foot of IC 5 meets VCC, IC 5
3rd foot Jing resistance R27 meet VCC；
Resistance R23 and diode D12 that 7th foot of IC 5 is concatenated connect the colelctor electrode of audion Q2, integrated electricity
Resistance R23 and resistance R24 that 7th foot of road IC5 is concatenated connect the 5th foot of IC 6, and the 8th foot of IC 6 connects
VCC, the 4th foot ground connection of IC 6, the 6th foot Jing resistance R28 of IC 6 meet VCC, and the 6th of IC 6 the
Foot Jing resistance R29 is grounded, and the 6th foot of IC 6 connects the 2nd foot of IC 6, the 1st foot Jing strings of IC 5
The resistance R30 and resistance R31 of connection connect the 3rd foot of IC 6, resistance R30 that the 1st foot of IC 5 is concatenated and
Diode D17 connects the colelctor electrode of audion Q2；
Resistance R32 and light emitting diode D13 ground connection that 7th foot of IC 6 is concatenated, the 7th of IC 6 the
Diode D14 that foot is concatenated and resistance R34 ground connection, diode D15 and resistance R34 that the 1st foot of IC 6 is concatenated
Ground connection, resistance R33 and light emitting diode D16 ground connection that the 1st foot of IC 6 is concatenated；
Diode D14 and resistance R35 that 7th foot of IC 6 is concatenated connect the 2nd foot of IC 7, integrated
3rd foot of IC circuit 7 meets the 5th foot of IC 7, one end of the 1st foot connecting resistance R36 of IC 7, resistance R36
Another terminating diode D19 negative pole, diode D19 positive pole Jing electric capacity C21 ground connection, the positive pole Jing resistance of diode D19
R37 connects VCC, the 3rd foot Jing resistance R39 ground connection of IC 7, one end of the 3rd foot connecting resistance R38 of IC 7, electricity
One end of another terminating resistor R40 of resistance R38 and the negative pole of diode D18, the other end and diode D18 of resistance R40 are just
Pole Jing resistance R41 connect the 6th foot of IC 7, and the positive pole Jing electric capacity C23 of diode D18 is grounded, and the 4th of IC 7 the
Foot is grounded, and the 8th foot meridian capacitor C22 ground connection of IC 7, the 7th foot Jing resistance R42 of IC 7 meet audion Q2
Base stage, the emitter stage polar region of audion Q2.
As shown in Figure 7, the power factor of energy-saving IGBT series resonant inverters intermediate frequency power supply device is consistently greater than 0.95, averagely
More than 0.98.
As illustrated in Figure 8 and 9 reference, 5 subharmonic and 7 subharmonic of energy-saving IGBT series resonant inverters intermediate frequency power supply device are equal
Less than 5%, even-order harmonic is respectively less than 2%, and odd harmonic and even-order harmonic sum are less than 5%, meet national standard（GB/T14549-
93）《Quality of power supply utility network harmonic wave》Requirement.
As shown in Figure 10, by taking 600KW equipment as an example, energy-saving IGBT series resonant inverters intermediate frequency power supply device fusing of the invention
One stove needs 55 minutes altogether, wherein having the time service of 53 minutes in invariable power state, the invariable power time reaches 96%, and this is
Miscellaneous equipment is beyond one's reach.
On the one hand because energy-saving IGBT series resonant inverters intermediate frequency power supply device realizes invariable power, 96% is reached, additionally, due to
Energy-saving IGBT series resonant inverters intermediate frequency power supply device intermediate frequency power supply voltage of intermediate frequency is high, and electromagnetic coupled efficiency high reaches 98%, two sides
Face reason causes energy-saving IGBT series resonant inverters intermediate frequency power supply device burn-off rate especially fast, only 20 points of 150KG/300KW equipment
Zhong Yilu, ton power consumption：550 degree, 45 minutes stoves of 1000KG/700KW equipment, 520 degree of ton power consumption, miscellaneous equipment cannot
Reach this kind of speed.
One skilled in the art would recognize that above-mentioned specific embodiment is exemplary, it is in order that ability
Field technique personnel can be better understood from present invention, should not be understood as limiting the scope of the invention, every
According to technical solution of the present invention improvements introduced, protection scope of the present invention is each fallen within.
Claims (1)
1. energy-saving IGBT series resonant inverters intermediate frequency power supply device, it is characterised in that：Including electrical connection IGBT Serial inverting circuits,
Rectification main circuit, driving power supply circuit, Voltage-Controlled oscillation circuit, commutating pulse form circuit and protection signal circuit；
The protection signal circuit includes IC 5, IC6 and IC7, and IC 5 includes IC5A and IC5B two parts,
IC 6 includes IC6A and IC6B two parts, and IC 7 includes IC7A and IC7B two parts；
Resistance R20, R21 and R22 that 5th foot of the IC 5 is concatenated connects the 6th foot of IC 5, integrated electricity
One end of the 6th foot connecting resistance R22 of road IC5, the other end Jing resistance R26 ground connection of resistance R22, the other end Jing of resistance R22 is electric
Resistance R25 meets the 2nd foot of IC 5, the 4th foot ground connection of IC 5, the 8th foot meridian capacitor C20 of IC 5
Ground connection, the 8th foot of IC 5 meets VCC, and the 3rd foot Jing resistance R27 of IC 5 meet VCC；
Resistance R23 and diode D12 that 7th foot of the IC 5 is concatenated connect the colelctor electrode of audion Q2, integrated electricity
Resistance R23 and resistance R24 that 7th foot of road IC5 is concatenated connect the 5th foot of IC 6；
8th foot of the IC 6 meets VCC, and the 4th foot ground connection of IC 6, the 6th foot Jing of IC 6 is electric
Resistance R28 meets VCC, and the 6th foot Jing resistance R29 ground connection of IC 6, the 6th foot of IC 6 connects IC 6
2nd foot；
Resistance R30 and resistance R31 that 1st foot of the IC 5 is concatenated connect the 3rd foot of IC 6, integrated electricity
Resistance R30 and diode D17 that 1st foot of road IC5 is concatenated connect the colelctor electrode of audion Q2；
Resistance R32 and light emitting diode D13 ground connection that 7th foot of the IC 6 is concatenated, the 7th of IC 6 the
Diode D14 that foot is concatenated and resistance R34 ground connection, diode D15 and resistance R34 that the 1st foot of IC 6 is concatenated
Ground connection, resistance R33 and light emitting diode D16 ground connection that the 1st foot of IC 6 is concatenated；
Diode D14 and resistance R35 that 7th foot of the IC 6 is concatenated connect the 2nd foot of IC 7, integrated
3rd foot of IC circuit 7 meets the 5th foot of IC 7, one end of the 1st foot connecting resistance R36 of IC 7, resistance R36
Another terminating diode D19 negative pole；
The positive pole Jing electric capacity C21 ground connection of the diode D19, the positive pole Jing resistance R37 of diode D19 connect VCC, integrated circuit
The 3rd foot Jing resistance R39 ground connection of IC7, one end of the 3rd foot connecting resistance R38 of IC 7, another termination electricity of resistance R38
One end of resistance R40 and the negative pole of diode D18, the other end of resistance R40 and the positive pole Jing resistance R41 of diode D18 connect integrated
6th foot of IC circuit 7, the positive pole Jing electric capacity C23 ground connection of diode D18, the 4th foot ground connection of the IC 7, integrated electricity
The 8th foot meridian capacitor C22 ground connection of road IC7, the 7th foot Jing resistance R42 of IC 7 connect the base stage of audion Q2, audion
The emitter stage polar region of Q2；
The IC 5, IC6 and IC7 are dual operational amplifier LM358.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510096901.XA CN104638901B (en) | 2015-03-05 | 2015-03-05 | Energy-saving type IGBT (insulated gate bipolar transistor) serial inverting medium-frequency power source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510096901.XA CN104638901B (en) | 2015-03-05 | 2015-03-05 | Energy-saving type IGBT (insulated gate bipolar transistor) serial inverting medium-frequency power source device |
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| Publication Number | Publication Date |
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| CN104638901A CN104638901A (en) | 2015-05-20 |
| CN104638901B true CN104638901B (en) | 2017-04-12 |
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| CN201510096901.XA Active CN104638901B (en) | 2015-03-05 | 2015-03-05 | Energy-saving type IGBT (insulated gate bipolar transistor) serial inverting medium-frequency power source device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4683529A (en) * | 1986-11-12 | 1987-07-28 | Zytec Corporation | Switching power supply with automatic power factor correction |
| CN2482476Y (en) * | 2001-08-03 | 2002-03-20 | 台州耐力调速电机有限公司 | Contravariant welder with protector |
| CN1953623A (en) * | 2005-10-17 | 2007-04-25 | 山东奥博特铜铝业有限公司 | A novel medium frequency heater of frequency conversion induction |
| CN201204714Y (en) * | 2008-05-30 | 2009-03-04 | 郑州科创电子有限公司 | Induction heating apparatus |
| CN201332521Y (en) * | 2008-12-31 | 2009-10-21 | 郑州科创电子有限公司 | IGBT serial inversion type quick melting furnace |
| CN104638945A (en) * | 2015-03-05 | 2015-05-20 | 潍坊市金华信电炉制造有限公司 | IGBT (insulated gate bipolar translator) serial inverting medium-frequency power supply device |
| CN104638902B (en) * | 2015-03-05 | 2018-03-06 | 山东华信电炉有限公司 | A kind of energy-saving IGBT series resonant inverters intermediate frequency power supply device |
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Address after: 261000 Shandong city in Weifang Province Economic Development Zone West First Street Pavilion Applicant after: SHANDONG HUAXIN ELECTRIC FURNACE Co.,Ltd. Address before: City Economic Development Zone in Shandong Province, Weifang City, 261000 West Street Applicant before: WEIFANG JINHUAXIN ELECTRIC FURNACE MANUFACTURING Co.,Ltd. |
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Denomination of invention: Energy saving IGBT series inverter intermediate frequency power supply device Effective date of registration: 20231025 Granted publication date: 20170412 Pledgee: Weifang branch of Bank of Beijing Co.,Ltd. Pledgor: SHANDONG HUAXIN ELECTRIC FURNACE Co.,Ltd. Registration number: Y2023980062749 |