CN218678863U - Power regulating circuit for low-power ultrahigh-frequency induction heating - Google Patents
Power regulating circuit for low-power ultrahigh-frequency induction heating Download PDFInfo
- Publication number
- CN218678863U CN218678863U CN202223027236.3U CN202223027236U CN218678863U CN 218678863 U CN218678863 U CN 218678863U CN 202223027236 U CN202223027236 U CN 202223027236U CN 218678863 U CN218678863 U CN 218678863U
- Authority
- CN
- China
- Prior art keywords
- unit
- circuit
- connection
- power
- bridge circuit
- 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.)
- Active
Links
- 230000006698 induction Effects 0.000 title claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 27
- 238000010438 heat treatment Methods 0.000 title claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 13
- 230000005669 field effect Effects 0.000 description 22
- 238000000034 method Methods 0.000 description 10
- 230000033228 biological regulation Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The application relates to the technical field of induction heating and discloses a power regulating circuit for low-power ultrahigh-frequency induction heating. The power regulating circuit comprises a single-phase power grid, a single-phase uncontrolled rectifying circuit, a full-bridge inverter circuit and an induction coil; the full-bridge inverter circuit comprises a first half-bridge circuit, a second half-bridge circuit and a high-frequency transformer, wherein the first half-bridge circuit and the second half-bridge circuit are alternately conducted in a staggered mode; the single-phase power grid is connected into the single-phase uncontrolled rectifying circuit, one end of the first half-bridge circuit and one end of the second half-bridge circuit are respectively connected into the single-phase uncontrolled rectifying circuit, the other end of the first half-bridge circuit and the other end of the second half-bridge circuit are respectively connected into the high-frequency transformer, and the high-frequency transformer is connected with the induction coil. This application can realize adjusting output's purpose through adjusting the duty cycle, has promoted stability and the convenience of adjusting power among the induction heating circuit.
Description
Technical Field
The application relates to the technical field of induction heating, in particular to a power regulating circuit for low-power ultrahigh-frequency induction heating.
Background
The induction heating has the characteristics of no open fire, high efficiency, convenience for automatic control and the like, when metal is placed in the coil magnetic field, induced current with the same frequency and opposite directions of the induction coils can be generated in the metal workpiece, so that eddy current is formed on the surface of the workpiece, and electric energy is converted into heat energy.
At present, in small power induction heating, the methods for adjusting power mainly include a tone modulation power modulation method, a pulse density modulation method and a phase shift modulation method. In the implementation process of the frequency modulation power modulation method, the frequency needs to be continuously adjusted, and the output frequency cannot be ensured to be at a resonance frequency point; the pulse density power regulation method needs to be continuously started and shut down within a period of time, and heating is unstable; the phase-shift power regulation method can realize stepless speed regulation of power, but the hardware and the software switch are difficult to design. Therefore, the power regulating circuit of the low-power induction heating still needs to be improved, so as to improve the stability and convenience of regulating power.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application will be solved is to improve miniwatt induction heating's power regulating circuit to promote the stability and the convenience of adjusting power.
In order to solve the problems, the application provides a low-power ultrahigh-frequency induction heating power regulation circuit which comprises a single-phase power grid, a single-phase uncontrolled rectifying circuit, a full-bridge inverter circuit and an induction coil; the full-bridge inverter circuit comprises a first half-bridge circuit, a second half-bridge circuit and a high-frequency transformer, wherein the first half-bridge circuit and the second half-bridge circuit are alternately conducted in a staggered mode; the single-phase power grid is connected into the single-phase uncontrolled rectifying circuit, one end of the first half-bridge circuit and one end of the second half-bridge circuit are respectively connected into the single-phase uncontrolled rectifying circuit, the other end of the first half-bridge circuit and the other end of the second half-bridge circuit are respectively connected into the high-frequency transformer, and the high-frequency transformer is connected with the induction coil.
Preferably, the first half-bridge circuit includes a first disconnection unit and a fourth disconnection unit, the second half-bridge circuit includes a second disconnection unit and a third disconnection unit, a first connection end of the first disconnection unit is connected to a second connection end of the second disconnection unit to form a first connection point, a second connection end of the first disconnection unit is connected to a current output end of the single-phase non-controlled rectifier circuit to form a second connection point, a first connection end of the second disconnection unit is connected to a current input end of the single-phase non-controlled rectifier circuit to form a third connection point, a first connection end of the fourth disconnection unit is connected to the third connection point, a second connection end of the fourth disconnection unit is connected to the first connection end of the third disconnection unit to form a fourth connection point, a second connection end of the third disconnection unit is connected to the second connection point, and one end of the high-frequency transformer is connected to the first connection point and the fourth connection point respectively.
Preferably, the single-phase uncontrolled rectifying circuit comprises a first communicating unit, a second communicating unit, a third communicating unit and a fourth communicating unit, an input end of the first communicating unit is connected with an output end of the third communicating unit to form a fifth connecting point, an input end of the third communicating unit and an input end of the fourth communicating unit are respectively connected with the third connecting point, an output end of the first communicating unit and an output end of the second communicating unit are respectively connected with the second connecting point, an input end of the second communicating unit is connected with an output end of the fourth communicating unit to form a sixth connecting point, and two ends of the single-phase power grid are respectively connected with the fifth connecting point and the sixth connecting point.
Preferably, the circuit further comprises a first capacitor, and two ends of the first capacitor are respectively connected with the second connection point and the third connection point.
Preferably, the induction coil further comprises a second capacitor, and two ends of the second capacitor are respectively connected with two ends of the induction coil.
Preferably, the first half-bridge circuit and the second half-bridge circuit are respectively switched on 180 degrees out of phase.
Preferably, the circuit further comprises a comparator, a first output end of the comparator is respectively communicated with the driving end of the first breaking unit and the driving end of the fourth breaking unit, and a second output end of the comparator is respectively communicated with the driving end of the second breaking unit and the driving end of the third breaking unit.
Preferably, the first communication unit, the second communication unit, the third communication unit and the fourth communication unit all use communication diodes.
Preferably, the first breaking unit, the second breaking unit, the third breaking unit and the fourth breaking unit each include a field effect transistor and a breaking diode, a source electrode of the field effect transistor is a first connection end of each breaking unit, a drain electrode of the field effect transistor is a second connection end of each breaking unit, a gate electrode of the field effect transistor is a drive end of each breaking unit, an anode of the breaking diode is connected to the source electrode of the field effect transistor, and a cathode of the breaking diode is connected to the drain electrode of the field effect transistor.
Preferably, the first capacitor is a polar capacitor.
Compared with the prior art, the method has at least one of the following beneficial technical effects:
the power regulating circuit comprises a single-phase power grid, a single-phase uncontrolled rectifying circuit, a full-bridge inverter circuit and an induction coil; the full-bridge inverter circuit comprises a first half-bridge circuit, a second half-bridge circuit and a high-frequency transformer, and the first half-bridge circuit and the second half-bridge circuit are alternately conducted in a phase-staggered mode for 180 degrees; the single-phase power grid is connected into the single-phase uncontrolled rectifying circuit, one end of the first half-bridge circuit and one end of the second half-bridge circuit are respectively connected into the single-phase uncontrolled rectifying circuit, the other end of the first half-bridge circuit and the other end of the second half-bridge circuit are respectively connected into the high-frequency transformer, and the high-frequency transformer is connected with the induction coil. Two groups of pulse width modulation waves with identical duty ratios but 180-degree phase dislocation are obtained by collecting the first half-bridge circuit and the second half-bridge circuit. The duty ratio is adjusted to obtain different output current values, so that different output current waveforms are formed, the purpose of adjusting the output power can be achieved by adjusting the duty ratio, and the stability and convenience of adjusting the power in the induction heating circuit are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a power regulating circuit for medium-low power ultrahigh frequency induction heating in the present application.
Description of reference numerals: A. a single-phase power grid; m1, a first cut-off unit; m2, a second disconnection unit; m3, a third breaking unit; m4, a fourth disconnection unit; d1, a first communication unit; d2, a second communication unit; d3, a third communication unit; d4, a fourth communication unit; c1, a first capacitor; c2, a second capacitor; l, an induction coil; t, high-frequency transformer.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, the embodiment of the utility model discloses a power adjusting circuit of miniwatt hyperfrequency induction heating. The power regulating circuit comprises a single-phase power grid A, a single-phase uncontrolled rectifying circuit, a full-bridge inverter circuit and an induction coil L. The two ends of the single-phase power grid A are respectively connected into a single-phase uncontrolled rectifying circuit, and alternating current output by the single-phase power grid A is converted into direct current through the uncontrolled rectifying circuit; the full-bridge inverter circuit comprises a first half-bridge circuit, a second half-bridge circuit and a high-frequency transformer T, the first half-bridge circuit and the second half-bridge circuit are conducted alternately at 180 degrees, one end of the first half-bridge circuit and one end of the second half-bridge circuit are respectively connected into a single-phase uncontrolled rectifying circuit, the other end of the first half-bridge circuit and the other end of the second half-bridge circuit are respectively connected into the high-frequency transformer T, and the first half-bridge circuit and the second half-bridge circuit bring alternating current action through pulse signals so as to output high-frequency alternating current voltage; meanwhile, a high-frequency transformer T is connected with the induction coil L, and high-frequency alternating-current voltage is output to the induction coil L to generate an alternating magnetic field so as to heat the metal workpiece.
In this embodiment, the power adjusting circuit includes a plurality of connection units and a plurality of disconnection units. Specifically, each communicating unit is provided with a communicating diode, wherein the anode of each communicating diode is the input end of each communicating unit, and the cathode of each communicating diode is the output end of each communicating unit. Each on-off unit comprises a field effect tube and an on-off diode, and in the embodiment, the field effect tube is an enhanced N-MOS tube; the source electrode of the field effect transistor is a first connecting end of each breaking unit, the drain electrode of the field effect transistor is a second connecting end of each breaking unit, and the grid electrode of the field effect transistor is a driving end of each breaking unit, wherein the grid electrode of the field effect transistor is connected with the control chip to receive the control signal; in addition, the anode of the cut-off diode is connected with the source electrode of the field effect transistor, and the cathode of the cut-off diode is connected with the drain electrode of the field effect transistor
Specifically, the first half-bridge circuit includes a first switching unit M1 and a fourth switching unit M4, and the second half-bridge circuit includes a second switching unit M2 and a third switching unit M3. The first connection end of the first disconnection unit M1 is connected with the second connection end of the second disconnection unit M2 to form a first connection point, the second connection end of the first disconnection unit M1 is connected with the current output end of the single-phase non-controlled rectification circuit to form a second connection point, the first connection end of the second disconnection unit M2 is connected with the current input end of the single-phase non-controlled rectification circuit to form a third connection point, the first connection end of the fourth disconnection unit M4 is connected with the third connection point, the second connection end of the fourth disconnection unit M4 is connected with the first connection end of the third disconnection unit M3 to form a fourth connection point, and the second connection end of the third disconnection unit M3 is connected with the second connection point; the first connecting end of the high-frequency transformer T is respectively connected with the first connecting point and the fourth connecting point, and the second connecting end of the high-frequency transformer T is respectively connected with two ends of the induction coil L.
Here, the first switching unit M1 and the fourth switching unit M4 are turned on in a staggered manner by 180 ° and are turned on and off simultaneously, and the second switching unit M2 and the third switching unit M3 are turned on in a staggered manner by 180 ° and are turned on and off simultaneously, so as to obtain pulse signals with the same duty ratio, where the duty ratio is the proportion of the energization time to the total time in one pulse cycle. The duty ratio can be adjusted by adjusting the same opening and closing of the first opening unit M1 and the fourth opening unit M4 and adjusting the same opening and closing of the second opening unit M2 and the third opening unit M3, the output voltage of the middle point of the bridge arm can be changed by adjusting the duty ratio, the larger the duty ratio is, the higher the output voltage is, the smaller the duty ratio is, the smaller the output voltage is, and then the adjustment of the output power of the first half-bridge circuit and the second half-bridge circuit is realized by changing the output voltage.
With reference to fig. 1, the single-phase uncontrolled rectifying circuit includes a first connection unit D1, a second connection unit D2, a third connection unit D3, and a fourth connection unit D4, and correspondingly, the first connection unit D1 is a first connection diode, the second connection unit D2 is a second connection diode, the third connection unit D3 is a third connection diode, and the fourth connection unit D4 is a fourth connection diode. The anode of the first connecting diode is connected with the cathode of the third connecting diode to form a fifth connecting point, the anode of the third connecting diode and the anode of the fourth connecting diode are respectively connected with the third connecting point, the cathode of the first connecting diode and the cathode of the second connecting diode are respectively connected with the second connecting point, the anode of the second connecting diode is connected with the cathode of the fourth connecting diode to form a sixth connecting point, and the two ends of the single-phase power grid A are respectively connected into the fifth connecting point and the sixth connecting point.
The power adjusting circuit further comprises a first capacitor C1 and a second capacitor C2. In this embodiment, the first capacitor C1 is a polar capacitor, and the first capacitor C1 has the function of voltage stabilization and filtering; the second capacitor C2 is a non-polar capacitor, and the second capacitor C2 has a resonant effect. Specifically, the positive electrode of the first capacitor C1 is connected to the second connection point, and the negative electrode of the first capacitor C1 is connected to the third connection point; two ends of the second capacitor C2 are connected to two ends of the induction coil L, respectively.
Further, the power regulating circuit also comprises a comparator, and when the comparator compares files, the comparator displays the position and the file name of the files. The comparator may compare files on the same drive or different drives and files in the same directory or different directories, and during the comparison the comparator will display a message identifying the location of the different information in the two files. In the power adjusting circuit, a first output end of the comparator is respectively communicated with a grid electrode of the field effect tube in the first cut-off unit M1 and a grid electrode of the field effect tube in the fourth cut-off unit M4, and a second output end of the comparator is respectively connected with a grid electrode of the field effect tube in the second cut-off unit M2 and a grid electrode of the field effect tube in the third cut-off unit M3.
In this example, the power adjusting circuit calculates the output power by collecting the output voltage and the output current of the first half-bridge circuit and the second half-bridge circuit based on the control of the DSP chip, and sets the given power according to the actual requirement. Specifically, the DSP chip is a chip capable of implementing a digital signal processing technique, the given power is subtracted from the output power to obtain a power difference, the power difference is first regulated by a proportional-integral controller in the control chip, then a duty ratio value required by an actual working condition is obtained after amplitude limiting, and then the duty ratio value is converted into two corresponding comparator values to be sent to a register for pulse width modulation; one comparator value is input into the grid electrode of the field effect tube in the first switching unit M1 and the grid electrode of the field effect tube in the fourth switching unit M4, and the other comparator value is input into the grid electrode of the field effect tube in the second switching unit M2 and the grid electrode of the field effect tube in the third switching unit M3, so that two groups of pulse width modulation waves with identical duty ratios and 180-degree phase dislocation are obtained.
Different output current values can be obtained by adjusting the duty ratio, so that different output current waveforms are formed, and the purpose of adjusting the output power can be achieved by adjusting the duty ratio. This embodiment has promoted stability and the convenience of adjusting power among the induction heating circuit through improving the power regulating circuit of miniwatt induction heating.
The implementation principle of the power regulating circuit for low-power ultrahigh-frequency induction heating in the embodiment of the application is as follows: the power regulating circuit comprises a single-phase power grid A, a single-phase uncontrolled rectifying circuit, a full-bridge inverter circuit and an induction coil L; the full-bridge inverter circuit comprises a first half-bridge circuit, a second half-bridge circuit and a high-frequency transformer T, wherein the first half-bridge circuit and the second half-bridge circuit are alternately conducted in a phase-staggered mode by 180 degrees; the single-phase power grid A is connected with the single-phase uncontrolled rectifying circuit, one end of the first half-bridge circuit and one end of the second half-bridge circuit are respectively connected with the single-phase uncontrolled rectifying circuit, the other end of the first half-bridge circuit and the other end of the second half-bridge circuit are respectively connected with the high-frequency transformer T, and the high-frequency transformer T is connected with the induction coil L.
The output power is calculated by collecting the output voltage and the output current of the first half-bridge circuit and the second half-bridge circuit, and the given power is set according to actual needs. The power difference is obtained by subtracting the output power from the given power, the power difference is firstly regulated and controlled by a proportional-integral controller in a control chip, then the duty ratio value required by the actual working condition is obtained after amplitude limiting, then the duty ratio value is converted into two corresponding comparator values, and the two comparator values are respectively input into a first half-bridge circuit and a second half-bridge circuit to obtain two groups of pulse width modulation waves with identical duty ratios but 180-degree phase dislocation. The duty ratio is adjusted to obtain different output current values, so that different output current waveforms are formed, the purpose of adjusting the output power can be achieved by adjusting the duty ratio, and the stability and convenience of adjusting the power in the induction heating circuit are improved.
While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A power regulating circuit of low-power ultrahigh frequency induction heating is characterized in that: the system comprises a single-phase power grid, a single-phase uncontrolled rectifying circuit, a full-bridge inverter circuit and an induction coil;
the full-bridge inverter circuit comprises a first half-bridge circuit, a second half-bridge circuit and a high-frequency transformer, wherein the first half-bridge circuit and the second half-bridge circuit are alternately conducted in a staggered mode;
the single-phase power grid is connected into the single-phase uncontrolled rectifying circuit, one end of the first half-bridge circuit and one end of the second half-bridge circuit are connected into the single-phase uncontrolled rectifying circuit respectively, the other end of the first half-bridge circuit and the other end of the second half-bridge circuit are connected into the high-frequency transformer respectively, and the high-frequency transformer is connected with the induction coil.
2. The power regulating circuit for small-power ultrahigh-frequency induction heating according to claim 1, wherein the first half-bridge circuit comprises a first switching unit and a fourth switching unit, the second half-bridge circuit comprises a second switching unit and a third switching unit, a first connection end of the first switching unit is connected with a second connection end of the second switching unit to form a first connection point, a second connection end of the first switching unit is connected with a current output end of the single-phase uncontrolled rectifying circuit to form a second connection point, a first connection end of the second switching unit is connected with a current input end of the single-phase uncontrolled rectifying circuit to form a third connection point, a first connection end of the fourth switching unit is connected with the third connection point, a second connection end of the fourth switching unit is connected with the first connection end of the third switching unit to form a fourth connection point, a second connection end of the third switching unit is connected with the second connection point, and one end of the high-frequency transformer is connected with the first connection point and the fourth connection point respectively.
3. The power regulating circuit of claim 2, wherein the single-phase uncontrolled rectifying circuit comprises a first connection unit, a second connection unit, a third connection unit and a fourth connection unit, an input end of the first connection unit is connected to an output end of the third connection unit to form a fifth connection point, an input end of the third connection unit and an input end of the fourth connection unit are respectively connected to the third connection point, an output end of the first connection unit and an output end of the second connection unit are respectively connected to the second connection point, an input end of the second connection unit is connected to an output end of the fourth connection unit to form a sixth connection point, and two ends of the single-phase power grid are respectively connected to the fifth connection point and the sixth connection point.
4. The power regulating circuit for small power ultrahigh frequency induction heating according to claim 2, further comprising a first capacitor, wherein two ends of the first capacitor are respectively connected to the second connection point and the third connection point.
5. The power regulating circuit for small-power ultrahigh-frequency induction heating according to claim 1, further comprising a second capacitor, wherein two ends of the second capacitor are respectively connected with two ends of the induction coil.
6. The power regulating circuit for small power ultrahigh frequency induction heating according to claim 1, wherein the first half-bridge circuit and the second half-bridge circuit are respectively conducted 180 ° out of phase.
7. The power regulating circuit for low-power ultrahigh-frequency induction heating according to claim 2, further comprising a comparator, wherein a first output end of the comparator is respectively communicated with the driving end of the first breaking unit and the driving end of the fourth breaking unit, and a second output end of the comparator is respectively communicated with the driving end of the second breaking unit and the driving end of the third breaking unit.
8. The power regulating circuit of claim 3, wherein the first communication unit, the second communication unit, the third communication unit and the fourth communication unit are all connected diodes.
9. The power regulating circuit of claim 2, wherein the first, second, third and fourth switching units each comprise a fet and a switching diode, the fet has a source connected to the first terminal of each switching unit, the fet has a drain connected to the second terminal of each switching unit, the fet has a gate connected to the driving terminal of each switching unit, the switching diode has an anode connected to the fet source, and the switching diode has a cathode connected to the drain of the fet.
10. The power regulating circuit of claim 4, wherein said first capacitor is a polar capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223027236.3U CN218678863U (en) | 2022-11-14 | 2022-11-14 | Power regulating circuit for low-power ultrahigh-frequency induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223027236.3U CN218678863U (en) | 2022-11-14 | 2022-11-14 | Power regulating circuit for low-power ultrahigh-frequency induction heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218678863U true CN218678863U (en) | 2023-03-21 |
Family
ID=85536253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223027236.3U Active CN218678863U (en) | 2022-11-14 | 2022-11-14 | Power regulating circuit for low-power ultrahigh-frequency induction heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218678863U (en) |
-
2022
- 2022-11-14 CN CN202223027236.3U patent/CN218678863U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Park et al. | A power-control scheme with constant switching frequency in class-D inverter for induction-heating jar application | |
| CN107276418B (en) | Wide-range soft switching direct current conversion circuit and control method thereof | |
| Saha et al. | Commercial frequency AC to high frequency AC converter with boost-active clamp bridge single stage ZVS-PWM inverter | |
| CN106458048B (en) | The Transmission system and method and vehicle arrangement of inductive charging for electro-motive vehicle | |
| JPH0934564A (en) | Input waveform follow-up type ac power unit | |
| CN107968471B (en) | LCLC resonance circuit, wide-range constant-power output direct-current charger and control method | |
| CN111478457B (en) | Multi-frequency multi-load wireless power transmission system based on multi-modulation wave composite SPWM control | |
| JP2019118234A (en) | Isolated bidirectional dc/dc converter and control method of the same | |
| CN108023411B (en) | Single-phase non-contact power supply system with power factor correction function | |
| JPH04230988A (en) | Driving circuit for inverter microwave oven | |
| CN107147298B (en) | A kind of microwave oven magnetic power supply device with pull-up active clamp branch | |
| CN218678863U (en) | Power regulating circuit for low-power ultrahigh-frequency induction heating | |
| Samart et al. | An automatic half-bridge resonant inverter with three-phase three-switch buck-type rectifier | |
| CN111835204B (en) | Zero-reflux power soft switch modulation method and converter of resonant double-active bridge | |
| JP2834916B2 (en) | Inverter microwave oven drive circuit | |
| CN219536346U (en) | Digital high-frequency induction heating power supply parallel circuit | |
| Mishima et al. | A new ZVS phase-shifted high-frequency resonant inverter incorporating asymmetrical PWM-based unit control for induction heating | |
| JP2768813B2 (en) | Inverter microwave oven drive circuit | |
| CN111193406A (en) | Direct-current converter, conversion method with wide output voltage range and vehicle charger | |
| Salvi et al. | A direct ac-ac multiple load inverter for vessels of different materials | |
| CN114172404B (en) | Inverter topology circuit and inverter | |
| CN109080475B (en) | Universal non-contact charging pile and control method thereof | |
| Yachiangkam et al. | Resonant inverter with a variable-frequency asymmetrical voltage-cancellation control for low q-factor loads in induction cooking | |
| CN219812083U (en) | High-frequency full-bridge structure of double-frequency power supply | |
| Zachariah et al. | High power frequency parallel resonance inverter with bridgeless rectifier for induction heating application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 523000, Room 507, Building 9, No.1 Xuefu Road, Songshanhu Park, Dongguan City, Guangdong Province Patentee after: Guangdong Zhongchuang Power Technology Co.,Ltd. Country or region after: China Address before: Room 715, Building 5, No. 1, R&D Fifth Road, Songshan Lake Park, Dongguan City, Guangdong Province, 523000 Patentee before: Guangdong Zhongchuang Power Technology Co.,Ltd. Country or region before: China |