CN204305380U - Half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace - Google Patents
Half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace Download PDFInfo
- Publication number
- CN204305380U CN204305380U CN201420565379.6U CN201420565379U CN204305380U CN 204305380 U CN204305380 U CN 204305380U CN 201420565379 U CN201420565379 U CN 201420565379U CN 204305380 U CN204305380 U CN 204305380U
- Authority
- CN
- China
- Prior art keywords
- power tube
- igbt power
- heating spool
- spool rest
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- General Induction Heating (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The utility model discloses a kind of half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace, half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace, it is characterized in that: comprise electric capacity C1, C3, C4, inductance L 1, heating spool rest P1-P4;? IGBT power tube DA, IGBT power tube DB, bridge rectifier U.The utility model can make extend the service life of electromagnetic oven, and safe and reliable.
Description
Technical field
The utility model relates to technical field of electric appliances, particularly relates to a kind of half-bridge structure double grid half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace.
Background technology
Electromagnetic oven is that a kind of electromagnetic field inducing generation eddy current that utilizes also generates heat then to the emerging kitchen appliance product that food heats, in electromagnetic oven circuit, IGBT power tube is a very important device, be equivalent to the heart of electromagnetic oven, in actual maintenance process, the fault rate of IGBT power tube is the highest, and whether because IGBT power tube carries the power stage of electromagnetic oven complete machine, being directly connected to electromagnetic oven can long-term stable operation.
When electromagnetic oven normally works, IGBT power tube is in high-frequency conducting and cut-off state, when the conducting of IGBT power tube, 220V electric main is after bridge rectifier rectification, obtain about+310V voltage, through the C pole of heating spool rest, IGBT power tube, G pole, formation loop, E pole, to heating spool rest charging, be the electromagnetic energy in heating spool rest by electric energy conversion, through theory calculate and actual test, now the DC voltage loaded on IGBT power tube is about 250V.And during the cut-off of IGBT power tube, load voltage between its E pole and C pole more than 1100V, the average current flowing through IGBT power tube is approximately 10A, due to electromagnetic oven normally work time, IGBT power tube is in high-frequency conducting and cut-off state, the loss electric current of the actual IGBT of flowing through power tube is 20A ~ 40A, so large operating current inverse peak voltage is the main cause that IGBT power tube is easily destroyed, once IGBT power tube is destroyed, light then burn out circuit board, Qiao Dui, protective tube ,+18V Zener diode, heavy then major accidents such as initiation fire.
Summary of the invention
What the purpose of this utility model was to overcome above-mentioned shortcoming and provided a kind ofly can make extend the service life of electromagnetic oven, and safe and reliable half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace.
The purpose of this utility model and solve its technical problem underlying and realize by the following technical solutions:
A kind of half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace of the present utility model, comprises electric capacity C1, C3, C4, inductance L 1, heating spool rest P1-P4, IGBT power tube DA, IGBT power tube DB, bridge rectifier U;
The phase line of 220V civil power is connected with the 220V mains electricity input end L of bridge rectifier U, the zero line of 220V civil power is connected with the 220V mains electricity input end N of bridge rectifier U, the output cathode of bridge rectifier U is connected with the left end of inductance L 1, the right-hand member of inductance L 1 is connected with the left end of heating spool rest P1, the right-hand member of inductance L 1 is connected with the output negative pole of bridge rectifier U by electric capacity C1, the right-hand member of heating spool rest P1 is connected with the left end of heating spool rest P2 by electric capacity C3, the right-hand member of heating spool rest P2 is connected with the C pole of IGBT power tube DA, the right-hand member of inductance L 1 is connected with the left end of heating spool rest P3, the right-hand member of heating spool rest P3 is connected with the left end of heating spool rest P4 by electric capacity C4, the right-hand member of heating spool rest P4 is connected with the C pole of IGBT power tube DB, the E pole of IGBT power tube DA is connected with the output negative pole of bridge rectifier U, the E pole of IGBT power tube DB is connected with the output negative pole of bridge rectifier U, the G pole of IGBT power tube DA is connected with PWN pwm voltage signal input part CON1, the G pole of IGBT power tube DB is connected with PWN pwm voltage signal input part CON2.
The utility model compared with prior art, there is obvious advantage and beneficial effect, from above technical scheme: IGBT power tube DA is under the PWM switching pulse signal of PWN pwm voltage signal input part CON1 drives, IGBT power tube DB is logical with certain Frequency Synchronization land wheel conductance under the driving of the PWM switching pulse of PWN pwm voltage signal input part CON2, cut-off, make heating spool rest P1, P2, P3, P4 produces the high frequency alternating current of 15-30kHz, thus produce eddy current in the bottom of irony pan, make to generate heat bottom pan.The burden of IGBT power tube can be alleviated, the service life of electromagnetic oven is extended, can prevent because IGBT power tube punch through damage causes the generation of property loss or fire incident simultaneously.
Accompanying drawing explanation
Fig. 1 circuit theory diagrams of the present utility model.
Mark in figure:
U: bridge rectifier;
C1: electric capacity;
LI: inductance;
C3: electric capacity;
C4: electric capacity;
P1: heating spool rest;
P2: heating spool rest;
P3: heating spool rest;
P4: heating spool rest;
DA:IGBT power tube;
DB:IGBT power tube;
The 220V mains electricity input end of L: bridge rectifier U;
The 220V mains electricity input end of N: bridge rectifier U;
CON1:PWN pwm voltage signal input part;
CON2:PWN pwm voltage signal input part.
detailed description of the invention:
Below in conjunction with accompanying drawing and preferred embodiment, to according to the detailed description of the invention of the half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace that the utility model proposes, structure, feature and effect thereof, be described in detail as follows.
As shown in Figure 1, half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace, comprises electric capacity C1, C3, C4, inductance L 1, heating spool rest P1-P4, IGBT power tube DA, IGBT power tube DB, bridge rectifier U;
The phase line of 220V civil power is connected with the 220V mains electricity input end L of bridge rectifier U, the zero line of 220V civil power is connected with the 220V mains electricity input end N of bridge rectifier U, the output cathode of bridge rectifier U is connected with the left end of inductance L 1, the right-hand member of inductance L 1 is connected with the left end of heating spool rest P1, the right-hand member of inductance L 1 is connected with the output negative pole of bridge rectifier U by electric capacity C1, the right-hand member of heating spool rest P1 is connected with the left end of heating spool rest P2 by electric capacity C3, the right-hand member of heating spool rest P2 is connected with the C pole of IGBT power tube DA, the right-hand member of inductance L 1 is connected with the left end of heating spool rest P3, the right-hand member of heating spool rest P3 is connected with the left end of heating spool rest P4 by electric capacity C4, the right-hand member of heating spool rest P4 is connected with the C pole of IGBT power tube DB, the E pole of IGBT power tube DA is connected with the output negative pole of bridge rectifier U, the E pole of IGBT power tube DB is connected with the output negative pole of bridge rectifier U, the G pole of IGBT power tube DA is connected with PWN pwm voltage signal input part CON1, the G pole of IGBT power tube DB is connected with PWN pwm voltage signal input part CON2.
Operation principle: when IGBT power tube DA starts conducting at the PWM switching pulse of PWN pwm voltage signal input part CON1, IGBT power tube DA conducting, IGBT power tube DB ends, 220V civil power is through bridge rectifier U rectification, and after the filter circuit filtering of inductance L 1 and electric capacity C1 composition, obtain the DC voltage of+310V, this DC voltage is loaded on heating spool rest P1 and heating spool rest P2, the output negative pole receiving bridge rectifier U through IGBT power tube DA forms loop, the DC voltage of+310V charges to heating spool rest P1 and heating spool rest P2, electric energy converts electromagnetic energy to and is stored in heating spool rest P1 and heating spool rest P2, now heating spool rest P3 and heating spool rest P4 charges to electric capacity C4, then electric capacity C4 discharges to heating spool rest P3 and heating spool rest P4 again.
When IGBT power tube DB starts conducting at the PWM switching pulse of PWN pwm voltage signal input part CON2, IGBT power tube DB conducting, IGBT power tube DA ends, 220V civil power is through bridge rectifier U rectification, and after the filter circuit filtering of inductance L 1 and electric capacity C1 composition, obtain+310V DC voltage, this DC voltage is loaded on heating spool rest P3 and heating spool rest P4, the output negative pole receiving bridge rectifier U through IGBT power tube DB forms loop, the DC voltage of+310V charges to heating spool rest P3 and heating spool rest P4, electric energy converts electromagnetic energy to and is stored in heating spool rest P3 and heating spool rest P4.Now heating spool rest P1 and heating spool rest P2 charges to electric capacity C3, and then electric capacity C3 discharges to heating spool rest P1 and heating spool rest P2 again.Charging and discharging so repeatedly, by heating spool rest P1 and heating spool rest P2 and electric capacity C3, the antiresonant circuit that heating spool rest P3 and heating spool rest P4 and electric capacity C4 is formed enters resonant condition, the frequency of its resonance is by heating spool rest P1, P2, the inductance value of P3, P4 and the capacitance of electric capacity C3, C4 determine.IGBT power tube DA is under the PWM switching pulse signal of PWN pwm voltage signal input part CON1 drives, IGBT power tube DB is logical with certain Frequency Synchronization land wheel conductance under the driving of the PWM switching pulse of PWN pwm voltage signal input part CON2, cut-off, make heating spool rest P1, P2, P3, P4 produces the high frequency alternating current of 15-30kHz, thus produces eddy current in the bottom of irony pan, makes to generate heat bottom pan.The burden of IGBT power tube can be alleviated, the service life of electromagnetic oven is extended, can prevent because IGBT power tube punch through damage causes the generation of property loss or fire incident simultaneously.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, anyly do not depart from technical solutions of the utility model content, the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. a half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace, comprise electricity and comprise electric capacity C1, C3, C4, inductance L 1, heating spool rest P1-P4, IGBT power tube DA, IGBT power tube DB, bridge rectifier U, it is characterized in that: IGBT power tube is 2, the phase line of 220V civil power is connected with the 220V mains electricity input end L of bridge rectifier U, the zero line of 220V civil power is connected with the 220V mains electricity input end N of bridge rectifier U, the output cathode of bridge rectifier U is connected with the left end of inductance L 1, the right-hand member of inductance L 1 is connected with the left end of heating spool rest P1, the right-hand member of inductance L 1 is connected with the output negative pole of bridge rectifier U by electric capacity C1, the right-hand member of heating spool rest P1 is connected with the left end of heating spool rest P2 by electric capacity C3, the right-hand member of heating spool rest P2 is connected with the C pole of IGBT power tube DA, the right-hand member of inductance L 1 is connected with the left end of heating spool rest P3, the right-hand member of heating spool rest P3 is connected with the left end of heating spool rest P4 by electric capacity C4, the right-hand member of heating spool rest P4 is connected with the C pole of IGBT power tube DB, the E pole of IGBT power tube DA is connected with the output negative pole of bridge rectifier U, the E pole of IGBT power tube DB is connected with the output negative pole of bridge rectifier U, the G pole of IGBT power tube DA is connected with PWN pwm voltage signal input part CON1, the G pole of IGBT power tube DB is connected with PWN pwm voltage signal input part CON2.
2. a kind of half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace as claimed in claim 1, is characterized in that: heating spool rest is 2 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420565379.6U CN204305380U (en) | 2014-09-28 | 2014-09-28 | Half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420565379.6U CN204305380U (en) | 2014-09-28 | 2014-09-28 | Half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204305380U true CN204305380U (en) | 2015-04-29 |
Family
ID=53110881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420565379.6U Withdrawn - After Issue CN204305380U (en) | 2014-09-28 | 2014-09-28 | Half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204305380U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270844A (en) * | 2014-09-28 | 2015-01-07 | 贵州省兴仁县昌茂电子科技有限公司 | Half-bridge structure double-gate IGBT power tube high-performance induction cooker control circuit |
-
2014
- 2014-09-28 CN CN201420565379.6U patent/CN204305380U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270844A (en) * | 2014-09-28 | 2015-01-07 | 贵州省兴仁县昌茂电子科技有限公司 | Half-bridge structure double-gate IGBT power tube high-performance induction cooker control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204119046U (en) | A kind of high frequency chopping sinusoidal wave output circuit | |
| CN106813271B (en) | A kind of low-power laser heating electromagnetic oven | |
| CN103313451B (en) | Electromagnetic heating circuit utilizing single-chip microcomputer to automatically track resonant frequency | |
| CN103596308B (en) | A kind of series resonant equipment for Electromagnetic Heating | |
| CN103312211A (en) | Control method of single phase grid-connected inverter | |
| CN204244499U (en) | Invariable power varible-frequency electromagnetic heater | |
| CN204305380U (en) | Half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace | |
| CN101257742B (en) | High frequency heating device | |
| CN104270844B (en) | Half-bridge structure double grid IGBT power tube high-performance controlling circuit of electromagnetic furnace | |
| CN203785025U (en) | Wide-voltage constant-power electromagnetic oven | |
| CN202998532U (en) | Electromagnetic induction heating control circuit based on digital signal processing | |
| CN204231198U (en) | A kind of purification high voltage source | |
| CN204539544U (en) | Solid state laser pumping xenon lamp power supply | |
| CN203522561U (en) | Full-bridge self-excited combined drive-type switching power supply | |
| CN204465350U (en) | A kind of resonance offset frequency ozonizer power supply | |
| CN204119562U (en) | IGBT semi-bridge inversion intermediate frequency-superaudio-high-frequency induction heating power | |
| CN203896194U (en) | Switch power supply | |
| CN203313439U (en) | Electromagnetic heating circuit using single-chip microcomputer to automatically track resonant frequency | |
| CN203015157U (en) | High-power induction cooker circuit based on power electronics | |
| CN202906748U (en) | Medium-frequency power supply of double-resonance thyristor | |
| CN203037761U (en) | Overall aging instrument dedicated for induction cooker | |
| CN202617022U (en) | Voltage adjustable circuit of electromagnetic oven | |
| CN204090261U (en) | Electronic ballast of high voltage sodium lamp | |
| CN204376753U (en) | unipolar pulse power supply | |
| CN103051169B (en) | A kind of reactive power control method of inversion topological circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20160427 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |