CN208462091U - A kind of series resonance work efficiency adjustment system - Google Patents
A kind of series resonance work efficiency adjustment system Download PDFInfo
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- CN208462091U CN208462091U CN201820819893.6U CN201820819893U CN208462091U CN 208462091 U CN208462091 U CN 208462091U CN 201820819893 U CN201820819893 U CN 201820819893U CN 208462091 U CN208462091 U CN 208462091U
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Abstract
The utility model discloses a kind of series resonance work efficiency to adjust system, including host, rectification module, trigger module, inverter module, impedance matching box and sampling module；The input terminal of rectification module is connect with three phase mains, and the output end of rectification module is connect with inverter module；Host is connect with trigger module, trigger module is connect with inverter module, and the input terminal connection of inverter module and impedance matching box, the output end of impedance matching box is connect with series resonant circuit, host is connect with sampling module, and sampling module is used to detect the electric current of the output end of impedance matching box.Advantages and beneficial effects of the utility model lie in that the phase of the voltage and current of series resonant circuit can be adjusted precisely automatically, the working efficiency of series resonant circuit and output power is made to reach optimum state, saves expensive for enterprise；It can know the working efficiency and working condition of current series resonant circuit in real time using man-machine interface card worker.
Description
Technical field
The utility model relates to field of electrical control, in particular to a kind of series resonance work efficiency adjusts system.
Background technique
Currently used induction heating system is divided into two kinds of parallel resonance of load in series resonance and load.According to inversion element
It is different to divide thyristor inversion, IGBT inversion, GTO inversion, metal-oxide-semiconductor inversion etc. several again.Wherein silicon-controlled and GTO inverter circuit because
Trigger circuit loads and triggers very much the reasons such as power is bigger, reverse frequency is not high, low efficiency and gradually eliminates.Although metal-oxide-semiconductor
Reverse frequency can be made high, and driving circuit is also relatively easy, but the electric current of single metal-oxide-semiconductor is not very greatly, to do big function
The inverter of rate needs multiple metal-oxide-semiconductors in parallel, and when multiple metal-oxide-semiconductor parallel connections, major loop and driving circuit all become very multiple
Miscellaneous, reliability can also decline, so metal-oxide-semiconductor may be only available for lower-powered inverter.The rated current of IGBT is at present most
Greatly 3600A, driving circuit have mature auxiliary plan, and use is also fairly simple, can accomplish at present several hundred or even thousands of thousand
Watt.Parallel resonance is used as rectification circuit using silicon-controlled, adjusts function by changing silicon-controlled angle of flow change rectified voltage
Rate, when silicon-controlled phase shift, are very serious to the pollution of power grid, and power factor is also very low, and parallel resonance is also gradually eliminated at present.
The series resonant circuit of IGBT inversion is mostly used to heat load at present, however, since series resonance uses
Change frequency and adjust power, frequency gets over that high power is smaller, and frequency more low-power is bigger, when actual operating frequency and system are intrinsic
It is resonant state when resonance frequency f0 is equal, system is in resistive, and power is maximum at this time.The adjusting range of frequency is necessarily subject to
Limitation, actual operating frequency cannot be lower than f0, and otherwise load is in capacitive state, and for series resonance being absolutely not can be with
, because series resonance is voltage-type resonance, power supply is voltage source, is short-circuit, electricity for power supply when load is in capacitive
Stream can be infinitely great, will lead to inversion circuit permanent damage.Series resonance is wide not as good as parallel resonance to the adaptation range of load, needs
Want stringent impedance matching that can just make system work in optimum state.
User is to the real work situation of system and does not know about, and professional person is needed to pass through oscillograph or other professional tools
Measurement could will lead to string when the induction coil of user or heating workpiece needs often change until the working condition of system
The impedance of connection resonance circuit changes, therefore when changing induction coil and heating workpiece every time, require to ask professional person into
Row matching, causes the production cost of enterprise to be greatly improved.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of series resonance work efficiency adjustment system.The technical program benefit
With host by trigger module control inverter module change inverter module output voltage and current frequency, make its with connect it is humorous
The resonance frequency matches of vibration circuit, and then the working efficiency of series resonant circuit is made to reach optimum state；It will be increased using host
Or reduce the turn ratio of transformer, make the impedance matching of series resonance work efficiency adjustment system and series resonant circuit, and then improve
The current power of series resonant circuit；Adjust it is accurate, easy to operate, therefore, when the induction coil being connect with series resonant circuit
Or heating workpiece without the special impedance operation of professional person's progress, only passes through host control inversion mould when replace
Block and impedance matching box can make the induction coil and heating workpiece obtain maximum power, convenient and efficient, save for enterprise
Expensive；
Current operating efficiency, current waveform image and the voltage oscillogram of series resonant circuit are shown using man-machine interface
Picture, to guarantee that worker can know the working efficiency and working condition of current series resonant circuit in real time.
One of the utility model series resonance work efficiency adjusts system, for adjusting the working efficiency of series resonant circuit
And output power, including host, rectification module, trigger module, inverter module, impedance matching box and sampling module；
The input terminal of the rectification module is connect with three phase mains, the output end of the rectification module and the inverter module
Connection；The host is connect with the trigger module, and the trigger module is connect with the inverter module, the inverter module with
The input terminal of the impedance matching box connects, and the output end of the impedance matching box is connect with series resonant circuit, the host
It is connect with sampling module, the sampling module is used to detect the electric current of the output end of the impedance matching box.
In above scheme, the rectification module includes rectification circuit and filter circuit, the input terminal of the rectification circuit with
Three phase mains connection, the output end of the rectification circuit are connect with filter circuit and inverter module respectively.
In above scheme, the rectification circuit includes diode D1, D2, D3, D4, D5 and D6, the rectification circuit it is defeated
Entering end includes first input end, the second input terminal and third input terminal, and the output end of the rectification circuit includes the first output end
And second output terminal；
The anode of the diode D1 and the cathode of diode D2 are connect with first input end respectively, the diode D3's
The cathode of anode and diode D4 are connect with the second input terminal respectively, the anode of the diode D5 and the cathode point of diode D6
Do not connect with third input terminal, the cathode of the cathode of the diode D1, the cathode of diode D3 and diode D5 respectively with institute
State the connection of the first output end, the anode of the diode D2, the anode of diode D4 and diode D6 anode respectively with it is described
Second output terminal connection；
The filter circuit includes capacitor C1, and the both ends of the capacitor C1 connect with the first output end and second output terminal respectively
It connects.
In above scheme, the sampling module includes first siding ring, second siding ring and iron core；The iron core is located at institute
It states in first siding ring, the both ends of the first siding ring are connect with the output end of the impedance matching box respectively, the impedance
The output end of adaptation exports electric current to first siding ring；The second siding ring is with first siding ring mutual induction and according to one
Curent change in secondary lateral coil forms row into ac voltage signal.
In above scheme, the sampling module further includes current shaping filter circuit and absolute value circuit；The secondary side
The both ends of coil are connect with the absolute value circuit respectively, and the absolute value circuit also connects with the current shaping filter circuit
It connects, the current shaping filter circuit is connect with the host；
The second siding ring exports ac voltage signal to the absolute value circuit, and the absolute value circuit will exchange
Voltage signal is converted into d. c. voltage signal, and exports to the current shaping filter circuit, the current shaping filter circuit
Shaping filter is carried out to d. c. voltage signal, the d. c. voltage signal of analog quantity is transformed into can reflect present impedance in real time
Orchestration exports the current logic signals of the phase of electric current, and current logic signals are also converted to institute by the current shaping filter circuit
After stating the identifiable current interruptions signal of host, it is sent to the host；
The host exports the waveform of electric current according to current interruptions signals revivification impedance matching box, and forms current waveform figure
Picture.
In above scheme, the sampling module further includes voltage acquisition module and voltage plastic filter circuit, the voltage
Acquisition module is connect with the trigger module, and the trigger module is to the voltage acquisition module output switching signal, the electricity
Pressure acquisition module exports the voltage signal to voltage plastic filter circuit, and the voltage plastic filter circuit is by switching signal
It is transformed into the logical signal that can reflect the phase of present impedance adaptation output voltage in real time, the voltage plastic filter circuit
Voltage logic signal is also converted into the identifiable voltage interrupt signal of the host, and voltage interrupt signal is sent to described
Host；
The host restores the waveform of impedance matching box output voltage according to voltage interrupt signal, and forms voltage oscillogram
Picture.
In above scheme, the inverter module includes transistor G1, G2, G3 and G4；The collector of the transistor G1 and
The collector of transistor G3 is connect with first output end respectively, the transmitting of the emitter and transistor G3 of the transistor G1
Pole is connect with the impedance matching box respectively, the collector of the collector of the transistor G2 and transistor G4 respectively with the resistance
Anti- adaptation connection, the emitter of the transistor G2 and the emitter of transistor G4 are connect with the second output terminal respectively；
Described transistor G1, G2, G3 and G4 are respectively insulated gate bipolar transistor, and the inverter module is IGBT mould
Block.
In above scheme, the trigger module is connect with the base stage of transistor G1, G2, G3 and G4 respectively, the trigger mode
Block is IGBT trigger circuit, and the host is single-chip microcontroller；Series resonance work efficiency adjustment system further includes protection circuit, the protection
Circuit is connect with host, is used for protected host.
It further include man-machine interface in above scheme, the man-machine interface is connect with the host.
In above scheme, there is transformer, the primary coil of the transformer and impedance matching in the impedance matching box
The input terminal of device connects, and the secondary coil of the transformer is connect with the output end of the impedance matching box.
Advantages and beneficial effects of the utility model lie in that the utility model provides a kind of series resonance work efficiency adjustment system
System, can precisely adjust the phase of the voltage and current of series resonant circuit automatically, make the working efficiency of series resonant circuit with
And output power reaches optimum state；When the induction coil or heating workpiece that connect with series resonant circuit are replaced, nothing
Professional person is needed to carry out special impedance operation, this can be made by only controlling inverter module and impedance matching box by host
Induction coil and heating workpiece obtain maximum power, convenient and efficient, save expensive for enterprise；It is aobvious using man-machine interface
Show the current operating efficiency, current waveform image and voltage waveform image of series resonant circuit, to guarantee that worker can obtain in real time
Know the working efficiency and working condition of current series resonant circuit.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram that a kind of series resonance work efficiency of the utility model adjusts system.
In figure: 1, host 2, rectification module 3, trigger module 4, inverter module
5, impedance matching box 6, sampling module 7, series resonant circuit
8, man-machine interface 9, protection circuit 10, three phase mains 21, rectification circuit
22, filter circuit 211, first input end 212, the second input terminal
213, third input terminal 214, the first output end 215, second output terminal
51, transformer 511, primary coil 512, secondary coil
61, first siding ring 62, second siding ring 63, iron core
64, current shaping filter circuit 65, absolute value circuit
66, voltage acquisition module 67, voltage plastic filter circuit
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
As shown in Figure 1, the utility model is a kind of series resonance work efficiency adjustment system, for adjusting series resonant circuit 7
Working efficiency and output power, including host 1, rectification module 2, trigger module 3, inverter module 4, impedance matching box 5 and adopt
Egf block 6；
The input terminal of rectification module 2 is connect with three phase mains, and the output end of rectification module 2 is connect with inverter module 4；Host
1 connect with trigger module 3, and trigger module 3 is connect with inverter module 4, and inverter module 4 is connect with the input terminal of impedance matching box 5,
The output end of impedance matching box 5 is connect with series resonant circuit 7, and host 1 is connect with sampling module 6, and sampling module 6 is for detecting
The electric current of the output end of impedance matching box 5.
Specifically, rectification module 2 includes rectification circuit 21 and filter circuit 22, the input terminal and three-phase electricity of rectification circuit 21
Source connection, the output end of rectification circuit 21 are connect with filter circuit 22 and inverter module 4 respectively.
Specifically, rectification circuit 21 includes diode D1, D2, D3, D4, D5 and D6, the input terminal of rectification circuit 21 includes
First input end 211, the second input terminal 212 and third input terminal 213, the output end of rectification circuit 21 include the first output end
214 and second output terminal 215；
The anode of diode D1 and the cathode of diode D2 are connect with first input end 211 respectively, the anode of diode D3
Connect respectively with the second input terminal 212 with the cathode of diode D4, diode D5 anode and diode D6 cathode respectively with
Third input terminal 213 connects, and the cathode of the cathode of diode D1, the cathode of diode D3 and diode D5 is exported with first respectively
214 connection of end, the anode of the anode of diode D2, the anode of diode D4 and diode D6 connect with second output terminal 215 respectively
It connects；
Filter circuit 22 includes capacitor C1, and the both ends of capacitor C1 connect with the first output end 214 and second output terminal 215 respectively
It connects.
Specifically, sampling module 6 includes first siding ring 61, second siding ring 62 and iron core 63；Iron core 63 is located at primary
In lateral coil 61, the both ends of first siding ring 61 are connect with the output end of impedance matching box 5 respectively, the output of impedance matching box 5
It holds to first siding ring 61 and exports electric current；Second siding ring 62 is with 61 mutual induction of first siding ring and according to first siding ring 61
Interior curent change forms row into ac voltage signal.
Further, sampling module 6 further includes current shaping filter circuit 64 and absolute value circuit 65；Second siding ring 62
Both ends connect respectively with absolute value circuit 65, absolute value circuit 65 is also connect with current shaping filter circuit 64, current shaping
Filter circuit 64 is connect with host 1；
Second siding ring 62 exports ac voltage signal to absolute value circuit 65, and absolute value circuit 65 believes alternating voltage
It number is converted into d. c. voltage signal, and is exported to current shaping filter circuit 64, current shaping filter circuit 64 is to DC voltage
Signal carries out shaping filter, and the d. c. voltage signal of analog quantity is transformed into can reflect that present impedance adaptation 5 exports in real time
Current logic signals are also converted to host 1 and can recognize by the current logic signals of the phase of electric current, current shaping filter circuit 64
Current interruptions signal after, be sent to host 1；
Host 1 exports the waveform of electric current according to current interruptions signals revivification impedance matching box 5, and forms current waveform figure
Picture.
Further, sampling module 6 further includes voltage acquisition module 66 and voltage plastic filter circuit 67, voltage acquisition mould
Block 66 is connect with trigger module 3, and trigger module 3 will be electric to 66 output switching signal of voltage acquisition module, voltage acquisition module 66
Pressure signal is exported to voltage plastic filter circuit 67, and switching signal is transformed by voltage plastic filter circuit 67 to be reflected in real time
The logical signal of the phase of 5 output voltage of present impedance adaptation, voltage plastic filter circuit 67 also turn voltage logic signal
It is changed to the identifiable voltage interrupt signal of host 1, and voltage interrupt signal is sent to host 1；
Host 1 restores the waveform of 5 output voltage of impedance matching box according to voltage interrupt signal, and forms voltage oscillogram
Picture.
Specifically, inverter module 4 includes transistor G1, G2, G3 and G4；The collector of transistor G1 and the collection of transistor G3
Electrode is connect with the first output end 214 respectively, the emitter of the emitter of transistor G1 and transistor G3 respectively with impedance matching
Device 5 connects, and the collector of transistor G2 and the collector of transistor G4 are connect with impedance matching box 5 respectively, the hair of transistor G2
The emitter of emitter-base bandgap grading and transistor G4 are connect with second output terminal 215 respectively；
Transistor G1, G2, G3 and G4 are respectively insulated gate bipolar transistor, and inverter module 4 is IGBT module.
Preferably, trigger module 3 is connect with the base stage of transistor G1, G2, G3 and G4 respectively, and trigger module 3 is IGBT touching
Power Generation Road, host 1 are single-chip microcontroller；Series resonance work efficiency adjustment system further includes protection circuit 9, and protection circuit 9 and host 1 connect
It connects, is used for protected host 1；Protection circuit 9 is overload protecting circuit, for avoiding host 1 from causing to damage because of overload.
It preferably, further include man-machine interface 8, man-machine interface 8 is connect with host 1.
Preferably, there is transformer 51, primary coil 511 and the impedance matching box 5 of transformer 51 in impedance matching box 5
Input terminal connection, the secondary coil 512 of transformer 51 are connect with the output end of impedance matching box 5.
The working principle of above-mentioned technical proposal is: host 1 is calculated by comparing current waveform image and voltage waveform image
The phase difference between the electric current and voltage that impedance matching box 5 exports is obtained, while series resonant circuit 7 is obtained according to resonance principle
Current operating efficiency；Meanwhile current waveform image and voltage waveform image and current operating efficiency can be passed through people by host 1
Machine interface 8 is shown；Wherein, trigger module 3 is exported to the waveform and impedance matching box 5 of 66 output switching signal of voltage acquisition module
Voltage waveform it is consistent；
Meanwhile in resonance principle, when the phase difference of voltage and electric current is 0 °, load is in resistive state, after current hysteresis
When the phase difference of voltage is 90 °, load is in pure perceptual state.The phase difference of series resonant circuit voltage and current is generally operational in
0 ° to 50 ° or so, and when the phase difference of the voltage and current in series resonant circuit 7 is near 0 °, series resonant circuit 7 is imitated
Rate highest, reactive power are minimum；
Therefore, when the phase difference of voltage and electric current is not 0 °, host 1 by the electric current exported according to impedance matching box 5 and
Phase difference between voltage is calculated and is obtained for making voltage waveform image and the matched adjusting trigger signal of current waveform image,
And trigger signal will be adjusted and exported to trigger module 3, trigger module 3 will be according to adjusting trigger signal to the crystalline substance in inverter module 4
The base stage of body pipe G1, G2, G3 and G4 are opened or closed, and to adjust the phase of the voltage of the output of inverter module 4, and then are adjusted
The phase of the phase of the voltage of 5 output end of impedance matching box, the voltage and current for exporting impedance matching box 5 is mutually matched；
Meanwhile impedance matching box 5 export electric current and voltage between phase difference be 0 ° on the basis of, series resonance electricity
Road 7 can export the current power of series resonant circuit 7 to host 1, and host 1 is also by impedance matching box 5 to series resonant circuit 7
The electric current and voltage of output are calculated, and obtain present output power, host 1 is by current input power divided by present output power
Obtain current operating efficiency；Wherein, host 1 will be connect with impedance matching box 5, for controlling the turn ratio of transformer 51；
When the current operating efficiency of series resonant circuit 7 is lower, then illustrate the resonance frequency of series resonant circuit 7, with
The frequency of electric current and voltage that impedance matching box 5 exports mismatches, and host 1 will control inverter module 4 by trigger module 3 and change
The frequency for the voltage and current that inverter module 4 exports, makes the resonance frequency matches of itself and series resonant circuit 7, and then make to connect
The working efficiency of resonance circuit 7 reaches optimum state；
When the working efficiency of series resonant circuit 7 reaches optimum state, if the power or electric current of series resonant circuit 7 are not
When reaching predetermined power, host 1 will increase or reduce the turn ratio of transformer 51, make series resonance work efficiency adjustment system with connect
The impedance matching of resonance circuit 7, and then improve the current power of series resonant circuit 7；
The current operating efficiency of series resonant circuit 7, current waveform image and voltage waveform image are passed through people by host 1
Machine interface 8 is shown.
Therefore, real-time monitoring is carried out by the phase of the electric current and voltage that export to impedance matching box 5, guaranteed different
Under frequency also will phase to electric current and voltage it is controllable, and then ensure that the working efficiency of series resonant circuit 7；By that will connect
Current operating efficiency, current waveform image and the voltage waveform image of resonance circuit 7, show in man-machine interface 8 in real time, to protect
Card worker can know the working efficiency and working condition of current series resonant circuit 7 in real time；By changing 51 gear of transformer
Adjust the working efficiency and output power of series resonant circuit 7, adjust it is accurate, easy to operate, therefore, when with series resonance electricity
When the induction coil or heating workpiece of road connection are replaced, special impedance operation is carried out without professional person, is only led to
Crossing the control inverter module 4 of host 1 and impedance matching box 5 can make the induction coil and heating workpiece obtain maximum power,
It is convenient and efficient, expensive is saved for enterprise.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of series resonance work efficiency adjusts system, special for adjusting the working efficiency and output power of series resonant circuit
Sign is, including host, rectification module, trigger module, inverter module, impedance matching box and sampling module；
The input terminal of the rectification module is connect with three phase mains, and the output end of the rectification module and the inverter module connect
It connects；The host is connect with the trigger module, and the trigger module is connect with the inverter module, the inverter module and institute
State the input terminal connection of impedance matching box, the output end of the impedance matching box connect with series resonant circuit, the host and
Sampling module connection, the sampling module are used to detect the electric current of the output end of the impedance matching box.
2. a kind of series resonance work efficiency according to claim 1 adjusts system, which is characterized in that the rectification module includes
The input terminal of rectification circuit and filter circuit, the rectification circuit is connect with three phase mains, the output end point of the rectification circuit
It is not connect with filter circuit and inverter module.
3. a kind of series resonance work efficiency according to claim 2 adjusts system, which is characterized in that the rectification circuit includes
Diode D1, D2, D3, D4, D5 and D6, the input terminal of the rectification circuit include first input end, the second input terminal and third
Input terminal, the output end of the rectification circuit include the first output end and second output terminal；
The anode of the diode D1 and the cathode of diode D2 are connect with first input end respectively, the anode of the diode D3
Connect respectively with the second input terminal with the cathode of diode D4, the diode D5 anode and diode D6 cathode respectively with
The connection of third input terminal, the cathode of the cathode of the diode D1, the cathode of diode D3 and diode D5 is respectively with described the
The connection of one output end, the anode of the diode D2, the anode of diode D4 and diode D6 anode respectively with described second
Output end connection；
The filter circuit includes capacitor C1, and the both ends of the capacitor C1 are connect with the first output end and second output terminal respectively.
4. a kind of series resonance work efficiency according to claim 3 adjusts system, which is characterized in that the sampling module includes
First siding ring, second siding ring and iron core；The iron core is located in the first siding ring, the both ends of the first siding ring
It is connect respectively with the output end of the impedance matching box, the output end of the impedance matching box exports electric current to first siding ring；
The second siding ring and first siding ring mutual induction simultaneously form row into alternating current according to the curent change in first siding ring
Press signal.
5. a kind of series resonance work efficiency according to claim 4 adjusts system, which is characterized in that the sampling module also wraps
Include current shaping filter circuit and absolute value circuit；The both ends of the second siding ring are connect with the absolute value circuit respectively,
The absolute value circuit is also connect with the current shaping filter circuit, and the current shaping filter circuit and the host connect
It connects；
The second siding ring exports ac voltage signal to the absolute value circuit, and the absolute value circuit is by alternating voltage
Signal is converted into d. c. voltage signal, and exports to the current shaping filter circuit, and the current shaping filter circuit is to straight
It flows voltage signal and carries out shaping filter, the d. c. voltage signal of analog quantity is transformed into can reflect present impedance adaptation in real time
The current logic signals of the phase of electric current are exported, current logic signals are also converted to the master by the current shaping filter circuit
After the identifiable current interruptions signal of machine, it is sent to the host；
The host exports the waveform of electric current according to current interruptions signals revivification impedance matching box, and forms current waveform image.
6. a kind of series resonance work efficiency according to claim 5 adjusts system, which is characterized in that the sampling module also wraps
Voltage acquisition module and voltage plastic filter circuit are included, the voltage acquisition module is connect with the trigger module, the triggering
Module exports the voltage signal whole to voltage to the voltage acquisition module output switching signal, the voltage acquisition module
Shape filter circuit, switching signal is transformed by the voltage plastic filter circuit can reflect that present impedance adaptation exports in real time
Voltage logic signal is also converted to the host and can recognize by the logical signal of the phase of voltage, the voltage plastic filter circuit
Voltage interrupt signal, and voltage interrupt signal is sent to the host；
The host restores the waveform of impedance matching box output voltage according to voltage interrupt signal, and forms voltage waveform image.
7. a kind of series resonance work efficiency according to claim 6 adjusts system, which is characterized in that the inverter module includes
Transistor G1, G2, G3 and G4；The collector of the collector of the transistor G1 and transistor G3 respectively with first output end
Connection, the emitter of the transistor G1 and the emitter of transistor G3 are connect with the impedance matching box respectively, the crystal
The collector of pipe G2 and the collector of transistor G4 are connect with the impedance matching box respectively, the emitter of the transistor G2 and
The emitter of transistor G4 is connect with the second output terminal respectively；
Described transistor G1, G2, G3 and G4 are respectively insulated gate bipolar transistor, and the inverter module is IGBT module.
8. a kind of series resonance work efficiency according to claim 7 adjusts system, which is characterized in that the trigger module difference
It is connect with the base stage of transistor G1, G2, G3 and G4, the trigger module is IGBT trigger circuit, and the host is single-chip microcontroller；String
Connection resonance work efficiency adjustment system further includes protection circuit, and the protection circuit is connect with host, is used for protected host.
9. a kind of series resonance work efficiency according to claim 1 adjusts system, which is characterized in that it further include man-machine interface,
The man-machine interface is connect with the host.
10. a kind of series resonance work efficiency according to claim 1 adjusts system, which is characterized in that the impedance matching box
Interior to have transformer, the primary coil of the transformer and the input terminal of impedance matching box connect, the secondary wire of the transformer
Circle is connect with the output end of the impedance matching box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820819893.6U CN208462091U (en) | 2018-05-29 | 2018-05-29 | A kind of series resonance work efficiency adjustment system |
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| CN201820819893.6U CN208462091U (en) | 2018-05-29 | 2018-05-29 | A kind of series resonance work efficiency adjustment system |
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| CN201820819893.6U Active CN208462091U (en) | 2018-05-29 | 2018-05-29 | A kind of series resonance work efficiency adjustment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111163543A (en) * | 2019-12-30 | 2020-05-15 | 亿夫曼（北京）科技有限公司 | Induction heating control method and device based on load characteristics |
| CN114062796A (en) * | 2020-08-04 | 2022-02-18 | 青岛海尔电冰箱有限公司 | Detection device for electromagnetic wave generation system |
-
2018
- 2018-05-29 CN CN201820819893.6U patent/CN208462091U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111163543A (en) * | 2019-12-30 | 2020-05-15 | 亿夫曼（北京）科技有限公司 | Induction heating control method and device based on load characteristics |
| CN111163543B (en) * | 2019-12-30 | 2022-04-08 | 亿夫曼（北京）科技有限公司 | Induction heating control method and device based on load characteristics |
| CN114062796A (en) * | 2020-08-04 | 2022-02-18 | 青岛海尔电冰箱有限公司 | Detection device for electromagnetic wave generation system |
| CN114062796B (en) * | 2020-08-04 | 2023-11-14 | 青岛海尔电冰箱有限公司 | Detection device for electromagnetic wave generation system |
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