CN104638908A - All-solid state same-frequency and same-phase output variable-frequency double power source - Google Patents
All-solid state same-frequency and same-phase output variable-frequency double power source Download PDFInfo
- Publication number
- CN104638908A CN104638908A CN201510099219.6A CN201510099219A CN104638908A CN 104638908 A CN104638908 A CN 104638908A CN 201510099219 A CN201510099219 A CN 201510099219A CN 104638908 A CN104638908 A CN 104638908A
- Authority
- CN
- China
- Prior art keywords
- frequency
- solid state
- same
- induction
- power supply
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Inverter Devices (AREA)
- General Induction Heating (AREA)
Abstract
The invention relates to an all-solid state same-frequency and same-phase output variable-frequency double power source. The all-solid state same-frequency and same-phase output variable-frequency double power source is characterized by comprising two sets of all-solid state same-frequency and same-phase output variable-frequency power sources, an induction heating furnace induction ring, an induction furnace variable-frequency current signal transformer and an induction furnace variable-frequency voltage signal transformer, wherein each set of all-solid state same-frequency and same-phase output variable-frequency power source comprises a thyristor full-bridge rectifying part, a direct current reactor, an IGBT (insulated gate bipolar transistor) inverter, a rectifying circuit trigger, a protecting signal generator, an inverting circuit driving trigger and an auxiliary direct current power source. The all-solid state same-frequency and same-phase output variable-frequency double power source has the advantages that the two sets of IGBT inverters are simultaneously driven to work by one set of induction furnace variable-frequency current signals and variable-frequency voltage signals, and the two sets of variable-frequency power sources are used for outputting the output voltage to work at same phase and same frequency; the power is singly supplied to an upper die induction heating furnace and a lower die induction heating furnace which are overlapped up and down, so as to respectively adjust power; the mutual magnetic field interference of the loads of the overlapped upper induction furnace and lower induction furnace is eliminated; the requirement of production technology is met.
Description
Technical field
The present invention is all solid state with the frequency conversion of homophase output frequently duplicate supply of a kind of 100KW-10000KW isothermal forging upper/lower die induction heating, belongs to isothermal forging equipment technology field.
Background technology
Isothermal forging (Isothermal-forging) is a kind of emerging Forging Technology technology as a branch of superplastic forming.It is widely used in the manufacture of vital part in the structural member such as spacecraft, aircraft turbine engine of aerospace industries and national defense industry, forging can be made to reach shape need close to part, reduce material consumption, reduce process-cycle, cost, this technique can obtain the optimized Isothermal Forging of comprehensive mechanical property in conjunction with heat treatment.
During heat parts, keep identical temperature with mould until forge and terminate, this feature, makes the impact that the modification of mould Quench and material is hardened eliminate completely.Isothermal forging should be carried out in accordance with regulations except heating except blank, also tackles mould and heats.Heating mould is a very important link of isothermal forging.
Along with the maximization of vital part in the structural member such as spacecraft, aircraft turbine engine of aerospace industries and national defense industry.The problem of φ 900mm-φ 2000mm isothermal forging dies heating will be more and more outstanding.Current isothermal forging dies heating generally adopts Resistant heating case, tens hours will be reached heating time to φ 900mm-φ 2000mm isothermal forging dies, energy consumption will be high, as resistance wire fracture in production process, cannot hotly rush to repair, mold heated can be uneven, has impact to forging quality, die life, production efficiency.Resistance wire mold heated case frequency of maintenance is high, maintenance cost large, and production efficiency is lowly particularly outstanding in φ 900mm-φ 2000mm mold heated.Resistant heating case heating φ 900mm-φ 2000mm isothermal forging dies traditional in view of this, can not adapt to the demand with production development of equipping.
Summary of the invention
The all solid state of what the present invention proposed is a kind of 100KW-10000KW isothermal forging upper/lower die induction heating exports frequency conversion duplicate supply with frequently homophase, in order to solve upper and lower closed assembly induction furnace between electromagnetic interference problem.The inversion load sampled signal adopting a power supply is that reference signal triggers two platform independent variable frequency power supplys simultaneously, makes two platform independent variable frequency power supply output voltage homophases, with work frequently.Electromagnetic interference between the induction furnace eliminating upper and lower closed assembly.IGBT inverter circuit could realize, and two induction heating powers, overlap induction furnace for upper/lower die two, and temperature adjustment Power Regulation is by technological requirement induction heating to 950 DEG C of insulations two hours respectively, meets isothermal forging manufacturing technique requirent.
Technical solution of the present invention: all solid state with the frequency conversion of homophase output frequently duplicate supply, its structure comprises A, B bis-and overlaps all solid state with the variable frequency power supply of homophase output frequently, and induction heater induction coil, induction furnace frequency conversion electric current signal transformer, induction furnace frequency conversion voltage signal transformer, often overlap all solid state same variable frequency power supply of homophase output frequently and comprise controlled silicon full-bridge rectification part, direct current reactor, IGBT inverter and rectification circuit trigger, guard signal generator, inverter circuit drives trigger, auxiliary DC power supply, wherein rectifying part, direct current reactor, IGBT inverter is connected in series, and the power output end of described auxiliary DC power supply connects rectification circuit trigger, guard signal generator, inverter circuit drives the power input of trigger, rectification circuit trigger, first signal input part of guard signal generator connects, rectification circuit trigger, the secondary signal input of guard signal generator and inverter circuit drive the first signal input part of trigger to connect, and one end of induction furnace frequency conversion electric current signal transformer connects A, B is all solid state drives the first signal input part of trigger to connect with the inverter circuit in the variable frequency power supply of homophase output frequently, and the secondary coil of induction furnace frequency conversion voltage signal transformer connects A, the all solid state secondary signal input with the rectification circuit trigger in the variable frequency power supply of homophase output frequently of B.
Effect of the present invention and advantage:
1) drive two cover IGBT inverter work by a set of induction furnace frequency conversion current signal, frequency conversion voltage signal simultaneously, make two cover variable frequency power supplys export output voltage with same frequency work.Frequency conversion duplicate supply is powered separately to the upper/lower die induction heater of upper and lower closed assembly respectively, respectively adjusting power.To reach the elimination of the mutual magnetic interference of the load of induction furnace up and down of closed assembly.
2) shorten φ 900mm-φ 2000mm isothermal forging dies heating time (4-8 hour), improve heat hot efficiency, enhance productivity, mould is heated evenly, improve the quality of products, improve die life, reduce maintenance cost.
3) manufacturing technique requirent is met.
4) rectifier and trigger adopts full digital counting phase shift system, and degree of regulation is high, and antijamming capability is strong.
5) electric current and voltage adopts two close cycles PI regulable control pattern, have and export constant voltage ability, ensure that induction furnace terminal voltage does not change with extraneous factor (as primary voltage, load impedance etc.) change, equipment run more steady, power regulating range 10%---100%.
6) equipment has overvoltage, overcurrent, phase shortage, load short circuits, low hydraulic pressure, temperature cross high defencive function, and it is convenient that equipment has start and stop, and regulable control is flexible, the advantages such as working service is simple, efficiency is high, good stability.
7) owing to selecting IGPT frequency conversion circuit, the startup success rate of power supply is 100%, can ensure that two electric power output voltages are with push-push operation frequently.
Accompanying drawing explanation
Accompanying drawing 1 is all solid state structural representation with the frequency conversion of homophase output frequently duplicate supply of 100KW-10000KW isothermal forging upper/lower die induction heating.
In figure 1 is controlled silicon full-bridge rectification part, 2 are direct current reactors, 3 are IGBT inverters, 4 are induction heater induction coils, 5 are induction furnace frequency conversion electric current signal transformer, 6 are induction furnace frequency conversion voltage signal transformer, 7 are rectification circuit triggers, 8 are guard signal generators, 9 is that inverter circuit drives trigger, 10 auxiliary DC power supplies.
Embodiment
As shown in Figure 1, all solid state with the frequency conversion of homophase output frequently duplicate supply, its structure comprises A, B bis-and overlaps all solid state with the variable frequency power supply of homophase output frequently, and induction heater induction coil 4, induction furnace frequency conversion electric current signal transformer 5, induction furnace frequency conversion voltage signal transformer 6, often overlap power supply and comprise controlled silicon full-bridge rectification part 1, direct current reactor 2, IGBT inverter 3 and rectification circuit trigger 7, guard signal generator 8, inverter circuit drives trigger 9, auxiliary DC power supply 10, wherein rectifying part 1, direct current reactor 2, IGBT inverter 3 is connected in series, and the power output end of described auxiliary DC power supply 10 connects rectification circuit trigger 7, guard signal generator 8, inverter circuit drives the power input of trigger 9, rectification circuit trigger 7, first signal input part of guard signal generator 8 connects, rectification circuit trigger 7, the secondary signal input of guard signal generator 8 and inverter circuit drive the first signal input part of trigger 9 to connect, and one end of induction furnace frequency conversion electric current signal transformer 5 connects A, B is all solid state drives the first signal input part of trigger 9 to connect with the inverter circuit in the variable frequency power supply of homophase output frequently, and the secondary coil of induction furnace frequency conversion voltage signal transformer 6 connects A, the all solid state secondary signal input with the rectification circuit trigger 7 in the variable frequency power supply of homophase output frequently of B.
In converter plant, the load of rectification circuit is inverter circuit, and the active power that inverter circuit exports is that rectification circuit provides, so require that the output voltage of rectification circuit can regulate in prescribed limit continuously smooth.
Variable frequency power supply mostly adopts three-phase thyristor bridge rectification circuit, this is because its voltage regulation limits is large, and the little system that is conducive to of phase-shift control angle α (=90o--0 o) excursion automatically adjusts.
Rectification circuit trigger 7 adopts digital phase-shifted trigger circuit (its structure is standard integrated circuit), and these circuits for triggering have qualitative good, the advantage such as symmetry is good, antijamming capability is strong, debugging is convenient of reproducible, temperature.
Its structure of guard signal generator 8(is standard integrated circuit), the load variations of variable frequency induction heating is very large, and rectification circuit should be able to automatic output power limiting, voltage, electric current, and carries out electric current, overvoltage protection by rectification circuit to system.
Inverter circuit drives its structure of trigger 9(to be the integrated IGBT drive module of standard) inverter trigger circuit that forms for the integrated chip of timing tracking mode.Its effect IGBT inverter circuit, inversion drive trigger that direct current is become interchange.Parallel inverter circuit has good adaptive load ability, and running and comparing is reliable and stable, is the maximum circuit of converter plant application proportion.
The all solid state of 100KW-10000KW isothermal forging upper/lower die induction heating exports frequency conversion duplicate supply with frequency homophase, its workflow is by 1# all solid state variable frequency induction power supply, all solid state variable frequency induction power supply of 2#, namely A, B bis-overlaps variable frequency induction power supply, A, B bis-overlaps variable frequency induction power supply and powers separately to the upper/lower die induction heater of upper and lower closed assembly respectively, adjusting power respectively, to reach the elimination of the mutual magnetic interference of the load of induction furnace up and down of closed assembly; Drive two cover IGBT inverter work by a set of induction furnace frequency conversion current signal, frequency conversion voltage signal during work simultaneously, make two cover variable frequency power supplys export output voltage with same frequency work.
Application debugging on 3000T hydraulic press, in field adjustable process, we realize and induction heating equipment will be made normally to work have very large relation with the induction reactance of the inversion tank circuit, the adjustment of capacitive reactance.After induction heating equipment operational factor has been debugged, isothermal forging dies was by technological requirement 4-8 hour homogeneous heating to 950 DEG C insulation two hours, and mold is incubated frequency conversion voltage 550V, bed die insulation frequency conversion voltage 650V, isothermal forging dies is incubated at 950 DEG C, error ± 5 DEG C.Mold heated is even, and inductor shell feel temperature is low, isothermal forging dies high insulating effect, shell influence electricity, and start test equipment working stability was reliable continuously through 26 hours for induction heating equipment.In pressing process, upper inductor can rise in charged insulation, but consider safety factor, isothermal workpiece is added by former technique power-off, mold temperature declines about about 70 DEG C, close after adding isothermal forging workpiece blank inductor, heat up a few minutes isothermal forging dies temperature of full power rises only 950 DEG C of insulations, much smaller than the resistance heater heating-up time.Pressure testing several pieces of workpiece, isothermal forging dies induction heating equipment meets isothermal forging technological requirement completely.
It is electromagnetic interference problem between induction furnace in order to solve upper and lower closed assembly that the present invention mainly gives top priority to what is the most important.The inversion load sampled signal adopting a power supply is that reference signal triggers two platform independent variable frequency power supplys simultaneously, makes two platform independent variable frequency power supply output voltage homophases, with work frequently.Electromagnetic interference between the induction furnace eliminating upper and lower closed assembly.IGBT inverter circuit could realize.
Claims (2)
1. all solid state same homophase frequently exports frequency conversion duplicate supply, it is characterized in that comprising A, B bis-overlaps all solid state with the variable frequency power supply of homophase output frequently, and induction heater induction coil, induction furnace frequency conversion electric current signal transformer, induction furnace frequency conversion voltage signal transformer, often overlap all solid state same variable frequency power supply of homophase output frequently and comprise controlled silicon full-bridge rectification part, direct current reactor, IGBT inverter and rectification circuit trigger, guard signal generator, inverter circuit drives trigger, auxiliary DC power supply, wherein rectifying part, direct current reactor, IGBT inverter is connected in series, and the power output end of described auxiliary DC power supply connects rectification circuit trigger, guard signal generator, inverter circuit drives the power input of trigger, rectification circuit trigger, first signal input part of guard signal generator connects, rectification circuit trigger, the secondary signal input of guard signal generator and inverter circuit drive the first signal input part of trigger to connect, and one end of induction furnace frequency conversion electric current signal transformer connects A, B is all solid state drives the first signal input part of trigger to connect with the inverter circuit in the variable frequency power supply of homophase output frequently, and the secondary coil of induction furnace frequency conversion voltage signal transformer connects A, the all solid state secondary signal input with the rectification circuit trigger in the variable frequency power supply of homophase output frequently of B.
2. all solid state workflow with the frequency conversion of homophase output frequently duplicate supply as claimed in claim 1 is by 1# all solid state variable frequency induction power supply, all solid state variable frequency induction power supply of 2#, namely A, B bis-overlaps variable frequency induction power supply, A, B bis-overlaps variable frequency induction power supply and powers separately to the upper/lower die induction heater of upper and lower closed assembly respectively, adjusting power respectively, to reach the elimination of the mutual magnetic interference of the load of induction furnace up and down of closed assembly; Drive two cover IGBT inverter work by a set of induction furnace frequency conversion current signal, frequency conversion voltage signal during work simultaneously, make two cover variable frequency power supplys export output voltage with same frequency work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510099219.6A CN104638908A (en) | 2015-03-06 | 2015-03-06 | All-solid state same-frequency and same-phase output variable-frequency double power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510099219.6A CN104638908A (en) | 2015-03-06 | 2015-03-06 | All-solid state same-frequency and same-phase output variable-frequency double power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104638908A true CN104638908A (en) | 2015-05-20 |
Family
ID=53217329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510099219.6A Pending CN104638908A (en) | 2015-03-06 | 2015-03-06 | All-solid state same-frequency and same-phase output variable-frequency double power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104638908A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201297840Y (en) * | 2008-12-05 | 2009-08-26 | 中色科技股份有限公司 | A medium frequency induction furnace |
| JP2010080359A (en) * | 2008-09-29 | 2010-04-08 | Hitachi Appliances Inc | Electromagnetic induction heater |
| CN103079299A (en) * | 2011-10-05 | 2013-05-01 | 日立空调·家用电器株式会社 | Electromagnetic induction heating device |
-
2015
- 2015-03-06 CN CN201510099219.6A patent/CN104638908A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010080359A (en) * | 2008-09-29 | 2010-04-08 | Hitachi Appliances Inc | Electromagnetic induction heater |
| CN201297840Y (en) * | 2008-12-05 | 2009-08-26 | 中色科技股份有限公司 | A medium frequency induction furnace |
| CN103079299A (en) * | 2011-10-05 | 2013-05-01 | 日立空调·家用电器株式会社 | Electromagnetic induction heating device |
Non-Patent Citations (1)
| Title |
|---|
| 梁靖: "基于同频相输出解耦控制的感应加热电源组研究与设计", 《中国优秀硕士学位论文全文数据库》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | A hybrid modulation control for wireless power transfer systems to improve efficiency under light-load conditions | |
| CN102791072B (en) | High power high voltage generator | |
| CN110463005A (en) | Laser driven power supply | |
| CN106655797B (en) | A kind of light-duty medium frequency heating power source and design method based on high-frequency rectification inversion | |
| CN204565022U (en) | The all solid state variable frequency induction heater of isothermal forging upper/lower die | |
| JP2023504824A (en) | Plant for melting and/or heating metallic materials and method for supplying power to said plant | |
| CN204465339U (en) | All solid state with the frequency conversion of homophase output frequently duplicate supply | |
| CN104690204B (en) | Isothermal forging upper/lower die all solid state variable frequency induction heater and heating means | |
| CN104638908A (en) | All-solid state same-frequency and same-phase output variable-frequency double power source | |
| Zhou et al. | High-Efficiency WPT Systems for Potable Electronics Based on DC-Bias-Voltage-Controlled Variable Capacitor | |
| CN201113823Y (en) | Intermediate frequency furnace frequency conversion power source | |
| CN203708115U (en) | High-frequency heating power supply inversion main circuit of liquid-cooling polycrystalline silicon reduction furnace | |
| CN203523074U (en) | Electromagnetic induction heating control system | |
| CN205176159U (en) | Condenser is withstand voltage and overvoltage periodic test combined test system | |
| CN213073154U (en) | Automatic induction heating of impedance adjustment, melting variable frequency power supply system | |
| CN204504127U (en) | Isothermal forging φ 900-2000mm upper/lower die closed assembly induction heater | |
| CN201854462U (en) | Electromagnetic induction heater | |
| CN210803603U (en) | Factory power test circuit of general converter | |
| CN202127522U (en) | Intermediate frequency power supply closed-loop control system for machining of high-speed railway fastener elastic strip | |
| CN104507190B (en) | A kind of electromagnetic induction device for metal works heating | |
| CN104646590A (en) | Phi900-2000mm upper and lower die stacking type induction heating furnace for isothermal forging | |
| CN104852609A (en) | Industrial resistance furnace temperature control power adjustment device | |
| CN202406046U (en) | Medium frequency direct current power supply for chain resistance welding device | |
| CN202721845U (en) | Energy-saving type high-power IGBT series resonance type forging induction heating furnace | |
| CN107565570B (en) | Control method of energy supplementing power supply for valve group testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150520 |