CN209562835U - A kind of high-power broadband series resonant inverter - Google Patents
A kind of high-power broadband series resonant inverter Download PDFInfo
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- CN209562835U CN209562835U CN201822264740.2U CN201822264740U CN209562835U CN 209562835 U CN209562835 U CN 209562835U CN 201822264740 U CN201822264740 U CN 201822264740U CN 209562835 U CN209562835 U CN 209562835U
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Abstract
A kind of high-power broadband series resonant inverter, including power-switching circuit and control circuit two parts；Power-switching circuit includes that bridge module, filter circuit module, full-bridge inverter module, turnable resonator capacitance module, matching transformer module are not controlled in incoming breaker module, full-wave rectification；Control circuit includes master control borad, driving plate A, driving plate B, driving plate C, driving plate D, display board, power panel；This power supply is provided with turnable resonator capacitance module between the full-bridge inverter module and matching transformer module of power-switching circuit, provided with several resonant capacitances in parallel in turnable resonator capacitance module, switching access and the concatenated different capacitors of matching transformer module primary coil are controlled by master control plate module, make power work in different frequency, the adjustable purpose of wideband, frequency is reached, realize a tractor serves several purposes, the production area that equipment overall investment cost and equipment occupy is reduced, and is had the characteristics that using easy to adjust.
Description
Technical field
The utility model relates to metal material induction heating technical field of heat treatment, and in particular to a kind of high-power broadband string
Join resonant power.
Background technique
It is known, the existing working frequency for the continuous induction heating apparatus power supply of metal material be it is fixed, every
Power supply is only available for the induction heating of certain fixed several metal material part of heat penetration, and use scope is relatively narrow；When needs pair
When different metal material part carries out the induction heating of different depth, need to be equipped with the power supply of different operating frequency, therefore at heat
The production area that reason equipment overall investment is big, equipment occupies is big and inconvenient for use.
Utility model content
In order to overcome the shortcomings in the background art, the utility model discloses a kind of high-power broadband series resonant inverter,
This power supply is provided with turnable resonator capacitance module, turnable resonator electricity between full-bridge inverter module and matching transformer module
Provided with several resonant capacitances in parallel in molar block, it is primary with matching transformer module that switching access is controlled by master control borad
The concatenated different capacitors of coil, allow power supply to work in different frequency, realize a power supply and adapt to various metals material zero
The requirement of part different heating depth, has achieved the purpose that a tractor serves several purposes, reduces what equipment overall investment cost and equipment occupied
Produce area, and have the advantages that use, it is easy to adjust.
In order to realize the purpose of utility model, the utility model adopts the following technical solution: a kind of high-power broadband string
Join resonant power, it is characterized in that: including power-switching circuit and control circuit two parts；The power-switching circuit includes inlet wire
Breaker module, full-wave rectification do not control bridge module, filter circuit module, full-bridge inverter module, turnable resonator capacitance module,
Matching transformer module；Incoming breaker module end of incoming cables is connect by three cables with three phase mains, and leading-out terminal passes through
Three cables are not controlled bridge module end of incoming cables with full-wave rectification and are connect；Full-wave rectification do not control bridge module leading-out terminal by two cables with
The connection of filter circuit module end of incoming cables；Filter circuit module outgoing line end passes through two cables and full-bridge inverter module end of incoming cables
Connection；The wherein one end at full-bridge inverter module outgoing line end is passed through at the beginning of turnable resonator capacitance module and matching transformer with cable
One end connection of grade coil, the other end at full-bridge inverter module outgoing line end directly passes through cable and matching transformer is primary
The other end of coil connects；
The control circuit includes master control borad, driving plate A, driving plate B, driving plate C, driving plate D, display board, power panel；
The master control borad is connect by different data lines with driving plate A, driving plate B, driving plate C, driving plate D, display board respectively, is driven
Movable plate A, driving plate B, driving plate C, driving plate D pass through four road control lines respectively and connect with full-bridge inverter module；Master control borad
Also it is connect respectively with incoming breaker module, resonant power module by control line；Master control borad also passes through monitoring line and filters back
Road module, the connection of matching transformer module；The power panel passes through power supply line and master control borad respectively, driving plate A, driving plate B, drives
Movable plate C, driving plate D, display board connection；
Several resonant capacitances are arranged in parallel in the turnable resonator capacitance module, and partial resonance capacitor is arranged in series
There is switch, switching on and off for switch is controlled by master control borad.
Preferably, incoming breaker module end of incoming cables is connect by three copper bars with three phase mains, and leading-out terminal passes through
Three copper bars are not controlled bridge module end of incoming cables with full-wave rectification and are connect；Full-wave rectification do not control bridge module leading-out terminal by two copper bars with
The connection of filter circuit module end of incoming cables；Filter circuit module outgoing line end passes through two copper bars and full-bridge inverter module end of incoming cables
Connection；The wherein one end at full-bridge inverter module outgoing line end is passed through at the beginning of turnable resonator capacitance module and matching transformer with copper bar
One end connection of grade coil, the other end at full-bridge inverter module outgoing line end directly passes through copper bar and matching transformer is primary
The other end of coil connects.
Preferably, the incoming breaker module and full-wave rectification, which are not controlled, is additionally provided with power-on protection electricity between bridge module
Road, power-on protection circuit include the current-limiting resistance and switch in parallel being arranged on three cables, and switch connection and disconnection are by leading
Control plate control.
Preferably, the primary coil of the matching transformer module is provided with several taps, and each tap passes through load
Matching switch is connect with the output end of turnable resonator capacitance module, and load-matching sswitch is switched on and off by manually controlling.
Preferably, the primary coil of the matching transformer module is provided with several taps, and each tap passes through load
Matching switch is connect with the output end of turnable resonator capacitance module, passes through control line between the load-matching sswitch and master control borad
Connection, switching on and off for load-matching sswitch are controlled by master control borad.
It preferably, include tetra- IGBT of IGBT-A, IGBT-B, IGBT-C, IGBT-D in the full-bridge inverter module,
The corresponding grid with IGBT-A, IGBT-B, IGBT-C, IGBT-D of the driving plate A, driving plate B, driving plate C, driving plate D connects
It connects.
It preferably, include broadband switching module in the master control borad, can be controlled respectively by broadband switching module can
Switch connection and disconnection in tuning vibration capacitance module.
It preferably, further include drive control and frequency tracking module in the master control borad, drive control and frequency-tracking mould
Block export four road rectangle square waves, respectively via driving plate A, driving plate B, driving plate C, driving plate D amplification after control IGBT-A,
The on and off of IGBT-B, IGBT-C, IGBT-D.
Due to the adoption of the technical scheme as described above, the utility model has the following beneficial effects: the utility model discloses
A kind of high-power broadband series resonant inverter, including power-switching circuit and control circuit two parts；Wherein power supply conversion electricity
Road is provided with turnable resonator capacitance module, turnable resonator capacitor mould between full-bridge inverter module and matching transformer module
It is provided with several resonant capacitances in parallel in block, switching access and matching transformer module primary coil are controlled by master control borad
Concatenated difference capacitor, makes turnable resonator capacitance module and matching transformer module work in different resonance frequencies；Wherein control
Circuit part processed is provided with drive control and frequency-tracking, drive control and frequency-tracking according to turnable resonator capacitance module and
Resonance frequency with transformer module work exports the rectangle of the rectangular wave of corresponding frequencies, drive control and frequency-tracking output
Wave controls the suitable of IGBT-A, IGBT-B, IGBT-C, IGBT-D after driving plate A, driving plate B, driving plate C, driving plate D amplification
Sequence on and off makes the rectangular voltage of full-bridge inverter module output respective resonant frequency, the rectangular voltage of resonance frequency
Turnable resonator capacitance module and matching transformer module primary coil is set to generate the sinusoidal resonance electric current of corresponding frequencies, matched change
The coupling of depressor module primary coil and secondary coil finally exports respective resonant frequency in matching transformer module secondary coil
Sinusoidal current, driving inductor to be heated metal material carry out induction heating；This high-power broadband series resonant inverter is logical
It crosses turnable resonator capacitance module and switches different capacitances, realizing a power supply can work in different frequency, adapt to a variety of gold
The requirement for belonging to material parts different heating depth, has achieved the purpose that a tractor serves several purposes, reduces equipment overall investment cost and sets
The standby production area occupied, and have the advantages that use, easy to adjust.
Detailed description of the invention
Fig. 1 is high-power broadband series resonant inverter functional block diagram.
Specific embodiment
By the following examples can detailed explanation the utility model, open the purpose of this utility model is intended to protect
All technological improvements in the scope of the utility model.A kind of high-power broadband series resonant inverter, including power-switching circuit and
Control circuit two parts；The power-switching circuit includes that bridge module, filter circuit are not controlled in incoming breaker module, full-wave rectification
Module, full-bridge inverter module, turnable resonator capacitance module, matching transformer module；The incoming breaker module inlet wire
End is connect by three cables with three phase mains, and incoming breaker module and full-wave rectification are not controlled and be provided with booting between bridge module
Circuit is protected, power-on protection circuit is not control to divide on three cables that bridge module is connect with full-wave rectification in incoming breaker module
150 ohm of current-limiting resistance and switch that She Zhiliao be in parallel, switching on and off for switch are controlled by master control borad；Full-wave rectification is not
Control bridge module leading-out terminal is connect by two cables with filter circuit module end of incoming cables；Filter circuit module outgoing line end passes through two
Cable is connect with full-bridge inverter module end of incoming cables；Full-bridge inverter module outgoing line end wherein one end with cable by adjustable
Resonant capacitance module is connect with one end of matching transformer primary coil, has been arranged in parallel in the turnable resonator capacitance module
Tri- resonant capacitances of C0, C1, C2, wherein there is C0 resonant capacitance wherein one by cable and full-bridge inverter module outgoing line end
End, matching transformer primary coil wherein one end be fixedly connected, remaining C1, C2 capacitor in parallel has been arranged in series switch, opens
What is closed switches on and off by the broadband switching module control in master control borad；The other end at full-bridge inverter module outgoing line end
It is directly connect with the other end of matching transformer primary coil by cable；The control circuit includes master control borad, driving plate
A, driving plate B, driving plate C, driving plate D, display board, power panel；Be additionally provided in the master control borad drive control and frequency with
Track, drive control and frequency-tracking pass through different data line respectively and connect with driving plate A, driving plate B, driving plate C, driving plate D,
Master control borad also passes through data line and connect with display panel module；Driving plate A, driving plate B, driving plate C, driving plate D pass through four respectively
Road control line is correspondingly connected with IGBT-A, IGBT-B, IGBT-C, IGBT-D in full-bridge inverter module；Master control borad is also logical
Control line is crossed to connect with incoming breaker module switch, power-on protection circuit switch respectively；Master control borad also passes through monitoring line and filter
Wave return circuit module, the connection of matching transformer module；The power panel passes through power supply line and master control borad, driving plate A, driving plate respectively
B, driving plate C, driving plate D, display board connection；There are three taps for the primary coil setting of the matching transformer module, each
Tap is connect by load-matching sswitch with the output end of turnable resonator capacitance module, and load-matching sswitch passes through control line and master
Control plate connection.
When high-power broadband series resonant inverter powers on, connection control circuit power supply, circuit start to be controlled are completed first,
Then the power supply of conversion circuit is powered on again；Power-switching circuit powered on moment, the switch of power-on protection circuit are to disconnect shape
State, three-phase current prevent powered on moment electric current excessive and generate impact to power grid, prevent simultaneously through three 150 ohm of current-limiting resistance
Only circuit transient current is excessive causes power circuit component to damage；Power up terminates, and master control borad detects filter circuit mould
After the electric current of block, voltage stabilization, the switch of power-on protection circuit is connected in control, is shorted out three 150 ohm of current-limiting resistance, electricity
Source powers on completion.
If capacitor C1, C2 string of the high-power broadband series resonant inverter work in intermediate frequency, turnable resonator capacitance module
The switch of connection is all turned on, and the rectangular wave of drive control and frequency-tracking output is corresponding IF frequency.
If capacitor C1 series connection of the high-power broadband series resonant inverter work in superaudio, turnable resonator capacitance module
Switch connection, the concatenated switch OFF of capacitor C2, drive control and frequency-tracking output rectangular wave be corresponding superaudio
Frequency.
If capacitor C1, C2 string of the high-power broadband series resonant inverter work in high frequency, turnable resonator capacitance module
The switch of connection is all off, and the rectangular wave of drive control and frequency-tracking output is corresponding higher frequency.
When high-power broadband series resonant inverter works normally, to guarantee power good, the work of safe and efficient rate, power supply
There are certain phase difference, i.e. matching transformer mould between the voltage and electric current of working frequency guarantee matching transformer module secondary coil
The electric current of block secondary coil falls behind the preset phase angle of voltage, and master control borad passes through monitoring line dynamic detection matching transformer module time
The phase difference of grade coil voltage and electric current, when phase difference is more than preset value, drive control and frequency-tracking meeting automatic fine tuning are defeated
Square wave frequency out, it is ensured that the phase difference of voltage and electric current is in preset value range.
High-power broadband series resonant inverter is the load characteristic for matching different dimension workpieces, is switched by master control borad and is matched
Three tap load matching switches of transformer module primary coil, so that it may realize power supply output to the matched of different dimension workpieces
Adjustment.
The non-detailed portion of the utility model is the prior art.
Claims (8)
1. a kind of high-power broadband series resonant inverter, it is characterized in that: including power-switching circuit and control circuit two parts；Institute
Stating power-switching circuit includes that bridge module, filter circuit module, full-bridge inverter are not controlled in incoming breaker module, full-wave rectification
Module, turnable resonator capacitance module, matching transformer module；Incoming breaker module end of incoming cables passes through three cables and three
The connection of phase power supply, leading-out terminal are not controlled bridge module end of incoming cables with full-wave rectification by three cables and are connect；Bridge mould is not controlled in full-wave rectification
Block leading-out terminal is connect by two cables with filter circuit module end of incoming cables；Filter circuit module outgoing line end by two cables with
The connection of full-bridge inverter module end of incoming cables；Wherein one end cable at full-bridge inverter module outgoing line end passes through turnable resonator
Capacitance module is connect with one end of matching transformer primary coil, and the other end at full-bridge inverter module outgoing line end is directly logical
Cable is crossed to connect with the other end of matching transformer primary coil；
The control circuit includes master control borad, driving plate A, driving plate B, driving plate C, driving plate D, display board, power panel；It is described
Master control borad is connect by different data lines with driving plate A, driving plate B, driving plate C, driving plate D, display board respectively, driving plate
A, driving plate B, driving plate C, driving plate D pass through four road control lines respectively and connect with full-bridge inverter module；Master control borad is also logical
Control line is crossed to connect with incoming breaker module, resonant power module respectively；Master control borad also passes through monitoring line and filter circuit mould
Block, the connection of matching transformer module；The power panel passes through power supply line and master control borad, driving plate A, driving plate B, driving plate respectively
C, driving plate D, display board connection；
Several resonant capacitances have been arranged in parallel in the turnable resonator capacitance module, partial resonance capacitor has been arranged in series switch,
Switching on and off for switch is controlled by control circuit.
2. high-power broadband series resonant inverter according to claim 1, it is characterized in that: the incoming breaker module inlet wire
End is connect by three copper bars with three phase mains, and leading-out terminal does not control bridge module end of incoming cables company by three copper bars and full-wave rectification
It connects；Full-wave rectification is not controlled bridge module leading-out terminal and is connect by two copper bars with filter circuit module end of incoming cables；Filter circuit module
Leading-out terminal is connect by two copper bars with full-bridge inverter module end of incoming cables；Wherein the one of full-bridge inverter module outgoing line end
End is connect by turnable resonator capacitance module with one end of matching transformer primary coil with copper bar, and full-bridge inverter module goes out
The other end of line end directly passes through copper bar and connect with the other end of matching transformer primary coil.
3. high-power broadband series resonant inverter according to claim 1, it is characterized in that: the incoming breaker module and complete
Wave rectification is not controlled and is additionally provided with power-on protection circuit between bridge module, power-on protection circuit include be arranged in it is on three cables and
The current-limiting resistance and switch of connection, switch connection and disconnection are controlled by master control borad.
4. high-power broadband series resonant inverter according to claim 1, it is characterized in that: the matching transformer module is first
Grade coil is provided with several taps, and each tap is connected by the output end of load-matching sswitch and turnable resonator capacitance module
It connects, load-matching sswitch is switched on and off by manually controlling.
5. high-power broadband series resonant inverter according to claim 1, it is characterized in that: the matching transformer module is first
Grade coil is provided with several taps, and each tap is connected by the output end of load-matching sswitch and turnable resonator capacitance module
It connects, is connected between the load-matching sswitch and master control borad by control line, load-matching sswitch is switched on and off by master control
Plate control.
6. high-power broadband series resonant inverter according to claim 1, it is characterized in that: in the full-bridge inverter module
Including tetra- IGBT of IGBT-A, IGBT-B, IGBT-C, IGBT-D, the driving plate A, driving plate B, driving plate C, D couples of driving plate
It should be connect with the grid of IGBT-A, IGBT-B, IGBT-C, IGBT-D.
7. high-power broadband series resonant inverter according to claim 1, it is characterized in that: including broadband in the master control borad
Switching module can control switch connection and disconnection in turnable resonator capacitance module by broadband switching module respectively.
8. high-power broadband series resonant inverter according to claim 1, it is characterized in that: further including driving in the master control borad
Control and frequency tracking module, drive control and frequency tracking module export four road rectangle square waves, respectively via driving plate A, drive
The on and off of IGBT-A, IGBT-B, IGBT-C, IGBT-D are controlled after movable plate B, driving plate C, driving plate D amplification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822264740.2U CN209562835U (en) | 2018-12-31 | 2018-12-31 | A kind of high-power broadband series resonant inverter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822264740.2U CN209562835U (en) | 2018-12-31 | 2018-12-31 | A kind of high-power broadband series resonant inverter |
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| Publication Number | Publication Date |
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| CN209562835U true CN209562835U (en) | 2019-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822264740.2U Expired - Fee Related CN209562835U (en) | 2018-12-31 | 2018-12-31 | A kind of high-power broadband series resonant inverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193425A (en) * | 2020-01-10 | 2020-05-22 | 大连理工大学 | Load self-adaptive high-voltage broadband alternating-current power supply circuit |
-
2018
- 2018-12-31 CN CN201822264740.2U patent/CN209562835U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193425A (en) * | 2020-01-10 | 2020-05-22 | 大连理工大学 | Load self-adaptive high-voltage broadband alternating-current power supply circuit |
| CN111193425B (en) * | 2020-01-10 | 2022-02-15 | 大连理工大学 | Load self-adaptive high-voltage broadband alternating-current power supply circuit |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20211231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |