CN203608392U - A digital frequency modulation phase-locked loop type full-bridge series connection resonance electromagnetic induction heating power supply - Google Patents
A digital frequency modulation phase-locked loop type full-bridge series connection resonance electromagnetic induction heating power supply Download PDFInfo
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- CN203608392U CN203608392U CN201320657989.4U CN201320657989U CN203608392U CN 203608392 U CN203608392 U CN 203608392U CN 201320657989 U CN201320657989 U CN 201320657989U CN 203608392 U CN203608392 U CN 203608392U
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Abstract
The utility model discloses a digital frequency modulation phase-locked loop type full-bridge series connection resonance electromagnetic induction heating power supply comprising a filter, a resonance full bridge output and frequency modulation amplitude modulation control. The band pass filter is connected with a three-phase alternating current power frequency power supply, and a three-phase alternating current power frequency voltage which has been subjected to filtering is connected into the resonance full bridge output. The resonance full-bridge output is connected with the frequency modulation amplitude modulation control. A direct current voltage output by a three-phase or a single-phase rectification circuit D is applied to a filter circuit which is with a radiation protection common mode inductor, and then the resonance full-bridge output provides a superaudio frequency power supply for a resonance load. A resonant capacitor of the resonance full-bridge output is connected with a heating coil. According to the utility model, insufficiencies in the prior art are overcome; and the high-grade induction heating power supply which can guarantee normal working in a condition that the distance between a heated body and the heating coil changes for more than 100mm in working, which is with a moving rate changing with a distance and which is timely in tracking is provided.
Description
Technical field
The utility model relates to electronic technology field, specifically belongs to a kind of frequency-shift keying PLL frequency sweep, the series connection full-bridge electromagnetic induction heating power supply of PLC monitoring.
Background technology
At present electromagnetic induction heating is international and be domesticly widely used, and such as civilian electromagnetic stove, and industry, oil, chemical industry etc., sees the occasion of heating, all finally has electromagnetic induction heating to replace.And during this work carried out, reason is exactly: the induction heating heat efficiency is high, energy-saving and environmental protection.But in existing market, induction heating equipment is difficult to realize normal heating because of various reasons in engineering, such as the distance of heated object is unfixing, the variation being in operation, throwing pot in picture cooking, the decentraction of industry cylinder, motion of stir-fry equipment etc., causes induction heating equipment laser heating normally, even cannot normal heating.This just makes induction heating be subject to certain restrictions in application.
Utility model content
The purpose of this utility model has been to provide frequency-shift keying PLL full-bridge series resonance electromagnetic induction heating power supply, the deficiencies in the prior art are overcome, providing a kind of has more than 100mm change in the situation that at work in distance between heated object and heater coil, can also guarantee normal work, moving rate is followed the tracks of high-level induction heating power timely with change of distance; Power supply is can be under the low temperature of subzero 40 ℃ and severe operational environment normal starts operation, uses reliable.
The technical solution adopted in the utility model is as follows:
Frequency-shift keying PLL full-bridge series resonance electromagnetic induction adds voltage source, comprise single-phase or Three-phase electric-wave filter, the output of resonance full-bridge, FMAM control, be connected with single-phase or three-phase alternating current power frequency supply by band pass filter, through filtered single-phase or three-phase alternating current power-frequency voltage access resonance full-bridge output, the output of resonance full-bridge and FMAM control connection, the filter circuit that the direct voltage of the single-phase or three-phase bridge rectification circuit D output of resonance full-bridge output is added on radiation proof common mode inductance provides superaudio electric energy by the output of resonance full-bridge to resonant load again, the resonant capacitance of resonance full-bridge output connects heater coil, heater coil connects respectively phase-locked loop circuit and the coil temperature control of FMAM control and passes the signal on FMAM control PLC.
Described resonance full-bridge output is connected into by single-phase or three phase rectifier D, common mode inductance L1, full-bridge IGBT, resonant capacitance.
The oscillating circuit of described FMAM control, provide by the superaudio signal access PLC vibrating under voltage-frequency conversion circuit control, send control command by PLC unit, send state display by interface circuit to display circuit, provide superaudio signal to triggering output interface circuit simultaneously, under drive control circuit, drive IGBT switch by drive circuit, drive circuit connects absorbing circuit, and PLC is connected with coil temperature control circuit, phase-locked loop circuit.
Described band pass filter carries FMAM control PLC, the output of resonance full-bridge to be transported to FMAM control PLC by voltage control, IGBT temperature signal by current controling signal.
Main control part in described power supply, is provided with two and half adjustable potentiometers, RV1 and RV2, and a pipe complete machine power is adjusted, and a distance adjustment of managing between heater coil and heated object namely regulates the coupling pine of phase-locked loop with tight.
Compared with the prior art, the beneficial effects of the utility model are as follows:
The utility model provides a kind of to be had more than 100mm change in the situation that at work in distance between heated object and heater coil, can also guarantee normal work, frequency is followed the tracks of high-level induction heating power timely with change of distance, power supply is can be under the low temperature of subzero 40 ℃ and severe operational environment normal starts operation, uses reliable.
Accompanying drawing explanation
Fig. 1 is structure of block diagram schematic diagram of the present utility model;
Fig. 2 is electrical block diagram of the present utility model.
Embodiment
Referring to accompanying drawing, frequency-shift keying PLL full-bridge series resonance electromagnetic induction heating power supply, comprise single-phase or Three-phase electric-wave filter 1, resonance full-bridge output 2, FMAM control 3, be connected with three-phase alternating current power frequency supply by band pass filter, through the output of filtered three-phase alternating current power-frequency voltage access resonance full-bridge, the output of resonance full-bridge and FMAM control connection, the filter circuit that the direct voltage of the three-phase bridge rectification circuit D output of resonance full-bridge output is added on radiation proof common mode inductance provides superaudio electric energy by the output of resonance full-bridge to resonant load again, the resonant capacitance of resonance full-bridge output connects heater coil, heater coil connects respectively phase-locked loop circuit and the coil temperature control of FMAM control and passes the signal on FMAM control PLC, described resonance full-bridge is exported by three-phase or single-phase rectifier D, common mode inductance L1, full-bridge IGBT, resonant capacitance is connected into.The oscillating circuit of described FMAM control, provide by the superaudio signal access PLC vibrating under voltage-frequency conversion circuit control, send control command by PLC unit, send state display by interface circuit to display circuit, provide superaudio signal to triggering output interface circuit simultaneously, under drive control circuit, drive IGBT switch by drive circuit, drive circuit connects absorbing circuit, and PLC is connected with coil temperature control circuit, phase-locked loop circuit.Described band pass filter carries FMAM control PLC, the output of resonance full-bridge to be transported to FMAM control PLC by voltage control, IGBT temperature signal by current controling signal.Main control part in described power supply, is provided with two and half adjustable potentiometers, RV1 and RV2, and a pipe complete machine power is adjusted, and a distance adjustment of managing between heater coil and heated object namely regulates the coupling pine of phase-locked loop with tight.
Claims (4)
1. frequency-shift keying PLL full-bridge series resonance electromagnetic induction heating power supply, comprises single-phase or Three-phase electric-wave filter, the output of resonance full-bridge, FMAM control; Be connected with three-phase or single phase alternating current (A.C.) power frequency supply by band pass filter, through filtered direct voltage access resonance full-bridge output circuit, the output of resonance full-bridge and FMAM control connection, it is characterized in that: full-bridge output circuit links with each control circuit by instrument transformer master control phase-locked loop circuit and PLC, thereby the distance between composition heater coil and heated object is adjustable.
2. frequency-shift keying PLL full-bridge series resonance electromagnetic induction heating power supply according to claim 1, is characterized in that: the output of described resonance full-bridge is connected into by three-phase or single-phase rectifier D, common mode inductance L1, full-bridge IGBT, resonant capacitance.
3. frequency-shift keying PLL full-bridge series resonance electromagnetic induction heating power supply according to claim 1 and 2, it is characterized in that: the oscillating circuit of described FMAM control, provide by the superaudio signal access PLC vibrating under voltage-frequency conversion circuit control, send control command by PLC unit, send state display by interface circuit to display circuit, provide superaudio signal to triggering output interface circuit simultaneously, under drive control circuit, drive IGBT switch by drive circuit, drive circuit connects absorbing circuit, PLC and coil temperature control circuit, phase-locked loop circuit is connected.
4. frequency-shift keying PLL full-bridge series resonance electromagnetic induction heating power supply according to claim 3, is characterized in that: described band pass filter carries FMAM control PLC, the output of resonance full-bridge to be transported to FMAM control PLC by voltage control, IGBT temperature signal by current controling signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320657989.4U CN203608392U (en) | 2013-10-23 | 2013-10-23 | A digital frequency modulation phase-locked loop type full-bridge series connection resonance electromagnetic induction heating power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320657989.4U CN203608392U (en) | 2013-10-23 | 2013-10-23 | A digital frequency modulation phase-locked loop type full-bridge series connection resonance electromagnetic induction heating power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203608392U true CN203608392U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320657989.4U Expired - Fee Related CN203608392U (en) | 2013-10-23 | 2013-10-23 | A digital frequency modulation phase-locked loop type full-bridge series connection resonance electromagnetic induction heating power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103687116A (en) * | 2013-10-23 | 2014-03-26 | 北京久顺科技有限公司 | Digital FM (Frequency Modulation) PLL (Phase-locked Loop) full-bridge serial resonance electromagnetic induction heating power supply |
| CN104302027A (en) * | 2014-09-05 | 2015-01-21 | 湘潭市南冶中频高新技术开发有限公司 | Intermediate frequency-superaudio frequency-high frequency induction heating power source of IGBT full bridge inversion |
-
2013
- 2013-10-23 CN CN201320657989.4U patent/CN203608392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103687116A (en) * | 2013-10-23 | 2014-03-26 | 北京久顺科技有限公司 | Digital FM (Frequency Modulation) PLL (Phase-locked Loop) full-bridge serial resonance electromagnetic induction heating power supply |
| CN104302027A (en) * | 2014-09-05 | 2015-01-21 | 湘潭市南冶中频高新技术开发有限公司 | Intermediate frequency-superaudio frequency-high frequency induction heating power source of IGBT full bridge inversion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20181023 |