CN101437333A - Integrated module for digital high frequency switch electromagnetic heating power supply system - Google Patents
Integrated module for digital high frequency switch electromagnetic heating power supply system Download PDFInfo
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Abstract
The invention relates to an integrated module of a digital high frequency switch electromagnetism heating power source system, which consists of a rectification filter circuit, an inverter circuit, an IGBT driving isolation circuit, an input phase current sampling circuit, an IGBT current sampling circuit, an IGBT driving circuit, a singlechip microcontroller, a power controller, an IGBT temperature detecting circuit, a pan bottom temperature detecting circuit, a serial communication interface, a heating loop, a power source module integral structure. The power control of the power source system integral module adopts a mode for combining frequency modulation and adjustable pulse width, so that power adjustment is smooth and even; the inverter circuit power semiconductor over-current single pulse protection method improves reliability; and when maximum power is output, work frequency greatly reduces heating of the whole machine according to resonance frequency.
Description
Technical field
The present invention relates to a kind of integrated module for digital high frequency switch electromagnetic heating power supply system, belong to digital control high frequency switch power technical field.
Background technology
The high-frequency electromagnetic heating technique is a kind of new and effective mode of heating, have a wide range of applications at industry, commercial field, comprise food processing, industrial processes heating, surface heat processing, industrial processes welding etc., it is to adopt frequency electromagnetic waves to produce eddy current in being heated metal, metal itself makes directly heating of metal itself, and then the medium of heating metal container inside.Traditional electromagnetism heating power supply exists power adjustments unsmooth in use; the power supply self-heating is big; the unreasonable failure rate height that causes of protection design; problems such as circuit structure efficient is low; simultaneously; because electromagnetic heating apparatus is non-standard equipment substantially; therefore when the user needs; all need redesign; this state causes the product development difficulty big; standardization level is poor; reliability is low; the function imperfection; problems such as working service inconvenience; above problem; make that high-power high-frequency electromagnetic heating apparatus efficient is low; poor reliability; construction cycle is long; the application difficulty is big, can't satisfy the needs of each field to electromagnetic heating apparatus.
Summary of the invention
Purpose of the present invention just is to avoid and overcomes the shortcoming and defect of prior art and a kind of integrated module for digital high frequency switch electromagnetic heating power supply system that is applied on the electromagnetic heating apparatus is provided.
Integrated module for digital high frequency switch electromagnetic heating power supply system is a kind of power supply that is used for electromagnetic heating apparatus, the present invention uses the modular construction design to substitute traditional integrated design mode, integrated module for digital high frequency switch electromagnetic heating power supply system is mainly finished electromagnetism and is added thermal control and Power Conversion, and provide necessary communication interface, the electromagnetic heating apparatus designer can directly use this module to design electromagnetic heating apparatus, also can design other control circuits, the work of communication interface control power module is provided by module, module can make up as required, realize like this, can simplify product design personnel's design difficulty greatly, improve desin speed, guarantee product quality.
In view of the existing problem of electromagnetic heating apparatus in the past; for guaranteeing the versatility of electromagnetism heating with power module; reliability and high-performance; module has adopted and different in the past technical methods when design, and method comprises that the protection of power semiconductor overcurrent pulse improves the reliability of complete machine under this; power adjustments adopts frequency modulation to transfer the form of pulsewidth and usefulness to make power adjustments smoothly even; operating frequency is demarcated according to resonance frequency and is made the complete machine heating reduce greatly during peak power output; serial communication interface makes things convenient for product design producer to carry out secondary development; the user position of reasonable Arrangement power module in product as required is convenient in the exquisite reliable design of modular construction easily.
Adopt the electromagnetic heating apparatus of integrated module for digital high frequency switch electromagnetic heating power supply system of the present invention have that power is big, efficient is high, volume is little, in light weight, reliable and stable, be convenient to effects such as secondary development; The present invention can improve power adjustments smoothness, the efficient of equipment, reduce volume weight and heating, improve whole aircraft reliability, can also simplify the process of specific product exploitation greatly, reduce the product development difficulty, be convenient to product seriation, the aspect is greatly improved in that adaptability, reliability, power adjustments stationarity, product development is easy etc. thereby make the electromagnetism heating products.
The present invention adopts following technical measures to realize its goal of the invention.
Integrated module for digital high frequency switch electromagnetic heating power supply system, it is by current rectifying and wave filtering circuit, inverter circuit, IGBT drives buffer circuit, input phase current sampling circuit, the IGBT current sampling circuit, the IGBT drive circuit, control single chip computer, power controller, the IGBT temperature sensing circuit, the cooking bottom temperature testing circuit, serial communication interface, heater coil, the power module overall structure constitutes, its course of work is the control method that is combined with pulse width modulation by the digital type pulse frequency modulation(FM), by detection power controller signals and other samplings and feedback signal, control single chip computer is determined pulse duration and the pulse frequency that inverter circuit is opened, after the IGBT drive circuit amplifies, drive buffer circuit through IGBT again and drive inverter circuit, produce high frequency magnetic field by heater coil, make its output satisfy the power output of electromagnetism heating needs.Its technical measures that adopt are that the control of power-supply system integration module power adopts frequency modulation to transfer the form of pulsewidth and usefulness to make power adjustments smoothly even; the guard method of inverter circuit power semiconductor overcurrent pulse has improved reliability; operating frequency is demarcated according to resonance frequency and is made the complete machine heating reduce greatly during peak power output, and serial communication interface is convenient to that product design producer carries out secondary development, the user position of reasonable Arrangement power-supply system integration module in product as required is convenient in the exquisite reliable design of modular construction easily.
Technical solution of the present invention is as follows:
1, integrated module for digital high frequency switch electromagnetic heating power supply system, it is by current rectifying and wave filtering circuit, inverter circuit, IGBT drives buffer circuit, input phase current sampling circuit, the IGBT current sampling circuit, the IGBT drive circuit, control single chip computer, power controller, the IGBT temperature sensing circuit, the cooking bottom temperature testing circuit, serial communication interface, heater coil, the power module overall structure constitutes, its course of work is the control method that is combined with pulse width modulation by the digital type pulse frequency modulation(FM), by detection power controller signals and other samplings and feedback signal, control single chip computer is determined pulse duration and the pulse frequency that inverter circuit is opened, after the IGBT drive circuit amplifies, drive buffer circuit through IGBT again and drive inverter circuit, produce high frequency magnetic field by heater coil, make its output satisfy the power output of electromagnetism heating needs.The form that it is characterized in that power-supply system integration module power control employing frequency modulation accent pulsewidth and usefulness makes power adjustments smoothly even; the guard method of inverter circuit power semiconductor overcurrent pulse has improved reliability; operating frequency is demarcated according to resonance frequency and is made the complete machine heating reduce greatly during peak power output, and serial communication interface is convenient to that product design producer carries out secondary development, the user position of reasonable Arrangement power-supply system integration module in product as required is convenient in the exquisite reliable design of modular construction easily.
Described integrated module for digital high frequency switch electromagnetic heating power supply system, it is characterized in that described digit pulse modulation control method is to determine current pulse frequency and pulse duration by control unit according to the power governor signal, whether simultaneously determine to exist in coverage in conjunction with the input current of input phase current sampling circuit collection can heating object, if this moment, input current was less than set point, then adopt predefined pulse frequency and pulse duration mode to export control, but to detect heating object whether in coverage.But in case find to exist effectively heating object, control single chip computer will progressively be regulated output and reach pulse frequency and the pulse duration of determining according to the power governor signal, pulse-modulated signal is sent by control single chip computer, after the IGBT drive circuit amplifies, drive buffer circuit through IGBT again and drive inverter circuit, produce high frequency magnetic field by heater coil, make its output satisfy the power output of electromagnetism heating needs.Power governor is continuously adjustable in adjustable range, so the control of power output also is adjustable continuously from the minimum to the maximum.What the method for existing power adjustments adopted is the mode of segmentation frequency modulation, power adjustments is unsmooth, make troubles to the user, but the part electromagnetic heating apparatus does not have to detect the whether function in coverage of heating object, can increase electromagnetic radiation like this, and bring potential safety hazard.
Described integrated module for digital high frequency switch electromagnetic heating power supply system; it is characterized in that the guard method of described inverter circuit power semiconductor overcurrent pulse is an electric current of being crossed IGBT by the real-time acquisition stream of IGBT tube current transducer; by IGBT current detecting pre-amplification circuit signal is handled; send overcurrent to and drive exclusive circuit; if find that the IGBT electric current is excessive; then immediately signal is sent to IGBT and drive buffer circuit; drive buffer circuit by IGBT and turn-off IGBT output, thereby reach the purpose of protection IGBT.In the existing IGBT overcurrent protection mode, the position difference of IGBT current sample, but be not so good as said method fast with accurate.
Described integrated module for digital high frequency switch electromagnetic heating power supply system, operating frequency is demarcated according to resonance frequency when it is characterized in that described peak power output.When control single chip computer is provided with the pulse frequency adjustable range, frequency for the maximum power correspondence should be determined according to the complete machine resonance frequency, determine that as required operating frequency and resonance frequency differ 1%～50%, because more near resonance frequency, the complete machine heating is more little, therefore can reach the purpose that reduces the complete machine heating, raises the efficiency according to this method staking-out work frequency.The operating frequency chosen distance resonant frequency point of existing electromagnetic heating apparatus is far, and general work frequency and resonance frequency differ 50%～70%, though be convenient to like this produce, the equipment self heating is very serious.
Described integrated module for digital high frequency switch electromagnetic heating power supply system, it is characterized in that described integrated module for digital high frequency switch electromagnetic heating power supply system has serial communication interface, pass through serial communication interface, the product design personnel can control figure formula high frequency switch electromagnetic heating power supply system integration module work, also can receive the operating state that control figure formula high frequency switch electromagnetic heating power supply system integration module returns, be convenient to the product design personnel carry out the product secondary development according to user's actual needs purpose thereby reach.Existing electromagnetic heating apparatus does not provide special-purpose serial communication interface for secondary development, therefore can't realize the target of secondary development.
Described integrated module for digital high frequency switch electromagnetic heating power supply system, it is characterized in that described integrated module for digital high frequency switch electromagnetic heating power supply system has modular structural design, module whole IP degree of protection reaches IP44, module itself has taken into full account the requirement of ventilation and heat, volume is little, be convenient to install, be convenient to the product design personnel according to the position of user's needs reasonable Arrangement power-supply system integration module in product thereby reach.Therefore existing electromagnetic heating apparatus does not adopt modularized design, but adopts the complete machine integrated design because integrated level is not high, causes product universal poor, produces, safeguards inconvenience.
The technology of the present invention effect is as follows:
The present invention relates to a kind of integrated module for digital high frequency switch electromagnetic heating power supply system, belong to digital control high frequency switch power technical field, the present invention is by current rectifying and wave filtering circuit, inverter circuit, IGBT drives buffer circuit, input phase current sampling circuit, the IGBT current sampling circuit, the IGBT drive circuit, control single chip computer, power controller, the IGBT temperature sensing circuit, the cooking bottom temperature testing circuit, serial communication interface, heater coil, the power module overall structure constitutes, its course of work is the control method that is combined with pulse width modulation by the digital type pulse frequency modulation(FM), by detection power controller signals and other samplings and feedback signal, control single chip computer is determined pulse duration and the pulse frequency that inverter circuit is opened, after the IGBT drive circuit amplifies, drive buffer circuit through IGBT again and drive inverter circuit, produce high frequency magnetic field by heater coil, make its output satisfy the power output of electromagnetism heating needs.The form that it is characterized in that power-supply system integration module power control employing frequency modulation accent pulsewidth and usefulness makes power adjustments smoothly even; the guard method of inverter circuit power semiconductor overcurrent pulse has improved reliability; operating frequency is demarcated according to resonance frequency and is made the complete machine heating reduce greatly during peak power output, and serial communication interface is convenient to that product design producer carries out secondary development, the user position of reasonable Arrangement power-supply system integration module in product as required is convenient in the exquisite reliable design of modular construction easily.
Adopt the electromagnetic heating apparatus of integrated module for digital high frequency switch electromagnetic heating power supply system of the present invention have that power is big, efficient is high, volume is little, in light weight, reliable and stable, be convenient to effects such as secondary development; The present invention can improve power adjustments smoothness, the efficient of equipment, reduce volume weight and heating, improve whole aircraft reliability, can also simplify the process of specific product exploitation greatly, reduce the product development difficulty, be convenient to product seriation, the aspect is greatly improved in that adaptability, reliability, power adjustments stationarity, product development is easy etc. thereby make the electromagnetism heating products.
Description of drawings
Fig. 1 is a kind of application integrated module for digital high frequency switch electromagnetic heating power supply system circuit structure of the present invention block diagram.
As shown in the figure, wherein 1 is current rectifying and wave filtering circuit, and 2 is inverter circuit, 3 are IGBT driving buffer circuit, 4 are input phase current sampling circuit, and 5 is the IGBT current sampling circuit, and 6 is the IGBT drive circuit, 7 is control single chip computer, 8 is power controller, and 9 is the IGBT temperature sensing circuit, and 10 is the cooking bottom temperature testing circuit, 11 is serial communication interface, and 12 is heater coil.
Fig. 2 is an inverter circuit power semiconductor overcurrent pulse protective circuit structured flowchart in the integrated module for digital high frequency switch electromagnetic heating power supply system.
As shown in the figure, wherein 1 is IGBT tube current transducer, and 2 is IGBT current detecting pre-amplification circuit, and 3 is IGBT overcurrent exclusive circuit, and 4 are IGBT driving buffer circuit.
Fig. 3 is for being a kind of integrated module for digital high frequency switch electromagnetic heating power supply system shape assumption diagram that peak power output of the present invention reaches 16 kilowatts of using.
Embodiment
Below in conjunction with content shown in the accompanying drawing the present invention and application thereof are further elaborated.
As shown in Figure 1, use integrated module for digital high frequency switch electromagnetic heating power supply system of the present invention, it is by current rectifying and wave filtering circuit 1, inverter circuit 2, IGBT drives buffer circuit 3, input phase current sampling circuit 4, IGBT current sampling circuit 5, IGBT drive circuit 6, control single chip computer 7, power controller 8, IGBT temperature sensing circuit 9, cooking bottom temperature testing circuit 10, serial communication interface 11, heater coil 12, the power module overall structure constitutes, its course of work is the control method that is combined with pulse width modulation by the digital type pulse frequency modulation(FM), by detection power controller 8 signals and other samplings and feedback signal, control single chip computer 7 is determined pulse duration and the pulse frequency that inverter circuit 2 is opened, after IGBT drive circuit 6 amplifies, drive buffer circuit 3 through IGBT again and drive inverter circuit 2, produce high frequency magnetic field by heater coil 12, make its output satisfy the power output of electromagnetism heating needs.
The digit pulse modulation control method that integrated module for digital high frequency switch electromagnetic heating power supply system uses is to determine current pulse frequency and pulse duration by control unit according to power governor 8 signals, simultaneously whether the input current of gathering in conjunction with input phase current sampling circuit 4 determine to exist in coverage can heating object, if this moment, input current was less than set point, then adopt predefined pulse frequency and pulse duration mode to export control, but to detect heating object whether in coverage.But in case find to exist effectively heating object, control single chip computer 7 will progressively be regulated output and reach pulse frequency and the pulse duration of determining according to power governor 8 signals, pulse-modulated signal is sent by control single chip computer 7, after IGBT drive circuit 6 amplifies, drive buffer circuit 3 through IGBT again and drive inverter circuit 2, produce high frequency magnetic field by heater coil 12, make its output satisfy the power output of electromagnetism heating needs.
As shown in Figure 2; the inverter circuit power semiconductor overcurrent pulse guard method that integrated module for digital high frequency switch electromagnetic heating power supply system uses is an electric current of being crossed IGBT by IGBT tube current transducer 1 real-time acquisition stream; handled by 2 pairs of signals of IGBT current detecting pre-amplification circuit; send overcurrent to and drive exclusive circuit 3; if find that the IGBT electric current is excessive; then immediately signal is sent to IGBT and drive buffer circuit 4; drive buffer circuit 4 by IGBT and turn-off IGBT output, thereby reach the purpose of protection IGBT.
Operating frequency is demarcated according to resonance frequency during peak power output that integrated module for digital high frequency switch electromagnetic heating power supply system uses.When control single chip computer is provided with the pulse frequency adjustable range, frequency for the maximum power correspondence should be determined according to the complete machine resonance frequency, determine that as required operating frequency and resonance frequency differ 1%～50%, because more near resonance frequency, the complete machine heating is more little, therefore can reach the purpose that reduces the complete machine heating, raises the efficiency according to this method staking-out work frequency.
Integrated module for digital high frequency switch electromagnetic heating power supply system has serial communication interface, pass through serial communication interface, the product design personnel can control figure formula high frequency switch electromagnetic heating power supply system integration module work, also can receive the operating state that control figure formula high frequency switch electromagnetic heating power supply system integration module returns, be convenient to the product design personnel carry out the product secondary development according to user's actual needs purpose thereby reach.
As shown in Figure 3, integrated module for digital high frequency switch electromagnetic heating power supply system has modular structural design, module whole IP degree of protection reaches IP44, module itself has taken into full account the requirement of ventilation and heat, volume is little, be convenient to install, be convenient to the product design personnel according to the position of user's needs reasonable Arrangement power-supply system integration module in product thereby reach.
Adopt electromagnetism of the present invention heating with the electromagnetic heating apparatus of power module have that power is big, efficient is high, volume is little, in light weight, reliable and stable, be convenient to effect such as secondary development; The present invention can improve power adjustments smoothness, the efficient of equipment, reduce volume weight and heating, improve whole aircraft reliability, can also simplify the process of specific product exploitation greatly, reduce the product development difficulty, be convenient to product seriation, the aspect is greatly improved in that adaptability, reliability, power adjustments stationarity, product development is easy etc. thereby make the electromagnetism heating products.
Claims (6)
1, integrated module for digital high frequency switch electromagnetic heating power supply system, it is by current rectifying and wave filtering circuit, inverter circuit, IGBT drives buffer circuit, input phase current sampling circuit, the IGBT current sampling circuit, the IGBT drive circuit, control single chip computer, power controller, the IGBT temperature sensing circuit, the cooking bottom temperature testing circuit, serial communication interface, heater coil, the power module overall structure constitutes, its course of work is the control method that is combined with pulse width modulation by the digital type pulse frequency modulation(FM), by detection power controller signals and other samplings and feedback signal, control single chip computer is determined pulse duration and the pulse frequency that inverter circuit is opened, after the IGBT drive circuit amplifies, drive buffer circuit through IGBT again and drive inverter circuit, produce high frequency magnetic field by heater coil, make its output satisfy the power output of electromagnetism heating needs.The form that it is characterized in that power-supply system integration module power control employing frequency modulation accent pulsewidth and usefulness makes power adjustments smoothly even; the guard method of inverter circuit power semiconductor overcurrent pulse has improved reliability; operating frequency is demarcated according to resonance frequency and is made the complete machine heating reduce greatly during peak power output, and serial communication interface is convenient to that product design producer carries out secondary development, the user position of reasonable Arrangement power-supply system integration module in product as required is convenient in the exquisite reliable design of modular construction easily.
2, integrated module for digital high frequency switch electromagnetic heating power supply system according to claim 1, it is characterized in that described digit pulse modulation control method is to determine current pulse frequency and pulse duration by control unit according to the power governor signal, whether simultaneously determine to exist in coverage in conjunction with the input current of input phase current sampling circuit collection can heating object, if this moment, input current was less than set point, then adopt predefined pulse frequency and pulse duration mode to export control, but to detect heating object whether in coverage.But in case find to exist effectively heating object, control single chip computer will progressively be regulated output and reach pulse frequency and the pulse duration of determining according to the power governor signal, pulse-modulated signal is sent by control single chip computer, after the IGBT drive circuit amplifies, drive buffer circuit through IGBT again and drive inverter circuit, produce high frequency magnetic field by heater coil, make its output satisfy the power output of electromagnetism heating needs.Power governor is continuously adjustable in adjustable range, so the control of power output also is adjustable continuously from the minimum to the maximum.What the method for existing power adjustments adopted is the mode of segmentation frequency modulation, power adjustments is unsmooth, make troubles to the user, but the part electromagnetic heating apparatus does not have to detect the whether function in coverage of heating object, can increase electromagnetic radiation like this, and bring potential safety hazard.
3, integrated module for digital high frequency switch electromagnetic heating power supply system according to claim 1; it is characterized in that the guard method of described inverter circuit power semiconductor overcurrent pulse is an electric current of being crossed IGBT by the real-time acquisition stream of IGBT tube current transducer; by IGBT current detecting pre-amplification circuit signal is handled; send overcurrent to and drive exclusive circuit; if find that the IGBT electric current is excessive; then immediately signal is sent to IGBT and drive buffer circuit; drive buffer circuit by IGBT and turn-off IGBT output, thereby reach the purpose of protection IGBT.In the existing IGBT overcurrent protection mode, the position difference of IGBT current sample, but be not so good as said method fast with accurate.
4, integrated module for digital high frequency switch electromagnetic heating power supply system according to claim 1, operating frequency is demarcated according to resonance frequency when it is characterized in that described peak power output.When control single chip computer is provided with the pulse frequency adjustable range, frequency for the maximum power correspondence should be determined according to the complete machine resonance frequency, determine that as required operating frequency and resonance frequency differ 1%～50%, because more near resonance frequency, the complete machine heating is more little, therefore can reach the purpose that reduces the complete machine heating, raises the efficiency according to this method staking-out work frequency.The operating frequency chosen distance resonant frequency point of existing electromagnetic heating apparatus is far, and general work frequency and resonance frequency differ 50%～70%, though be convenient to like this produce, the equipment self heating is very serious.
5, integrated module for digital high frequency switch electromagnetic heating power supply system according to claim 1, it is characterized in that described integrated module for digital high frequency switch electromagnetic heating power supply system has serial communication interface, pass through serial communication interface, the product design personnel can control figure formula high frequency switch electromagnetic heating power supply system integration module work, also can receive the operating state that control figure formula high frequency switch electromagnetic heating power supply system integration module returns, be convenient to the product design personnel carry out the product secondary development according to user's actual needs purpose thereby reach.Existing electromagnetic heating apparatus does not provide special-purpose serial communication interface for secondary development, therefore can't realize the target of secondary development.
6, integrated module for digital high frequency switch electromagnetic heating power supply system according to claim 1, it is characterized in that described integrated module for digital high frequency switch electromagnetic heating power supply system has modular structural design, module whole IP degree of protection reaches IP44, module itself has taken into full account the requirement of ventilation and heat, volume is little, be convenient to install, be convenient to the product design personnel according to the position of user's needs reasonable Arrangement power-supply system integration module in product thereby reach.Therefore existing electromagnetic heating apparatus does not adopt modularized design, but adopts the complete machine integrated design because integrated level is not high, causes product universal poor, produces, safeguards inconvenience.
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| CNA2007101774781A CN101437333A (en) | 2007-11-16 | 2007-11-16 | Integrated module for digital high frequency switch electromagnetic heating power supply system |
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| CNA2007101774781A CN101437333A (en) | 2007-11-16 | 2007-11-16 | Integrated module for digital high frequency switch electromagnetic heating power supply system |
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| CN102204403A (en) * | 2011-05-17 | 2011-09-28 | 华为技术有限公司 | An electronic heater and a control method thereof |
| CN102711298A (en) * | 2012-05-23 | 2012-10-03 | 美的集团有限公司 | Heating control device and control method for induction cooker |
| CN102802289A (en) * | 2012-07-30 | 2012-11-28 | 东莞市精诚电能设备有限公司 | Electromagnetic induction heating control circuit based on digital signal processing |
| CN102946654A (en) * | 2012-11-14 | 2013-02-27 | 明达实业(厦门)有限公司 | Half-wave electromagnetic field generator |
| CN103186149A (en) * | 2011-12-29 | 2013-07-03 | 亚弘电科技股份有限公司 | Heat regulation device and heat regulation method |
| CN104010399A (en) * | 2013-02-21 | 2014-08-27 | 美的集团股份有限公司 | Electromagnetic heating apparatus and control method thereof |
| CN105960042A (en) * | 2016-06-30 | 2016-09-21 | 浙江天煌科技实业有限公司 | Novel composite control system of induction heating power supply |
| CN109600865A (en) * | 2018-12-29 | 2019-04-09 | 杨松 | Steady function electrothermal driving device and its control method |
| CN110613305A (en) * | 2018-06-19 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Power supply control method and power supply control device, storage medium and cooking equipment |
| EP3644071A4 (en) * | 2017-07-26 | 2020-07-22 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Sampling current processing circuit, power detection circuit and electromagnetic cooking device |
| CN112714518A (en) * | 2019-10-25 | 2021-04-27 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating equipment, control method and device thereof and storage medium |
| CN114007293A (en) * | 2021-10-20 | 2022-02-01 | 成都利尼科医学技术发展有限公司 | Magnetron filament heating current control system |
| WO2022143248A1 (en) * | 2020-12-29 | 2022-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Half-bridge-drive heating cookware detection circuit, heating device, cookware detection method, and storage medium |
| CN115884455A (en) * | 2022-12-29 | 2023-03-31 | 广东海明晖电子科技有限公司 | Electromagnetic heating system and low standby power consumption control circuit thereof |
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| CN102204403A (en) * | 2011-05-17 | 2011-09-28 | 华为技术有限公司 | An electronic heater and a control method thereof |
| CN103186149A (en) * | 2011-12-29 | 2013-07-03 | 亚弘电科技股份有限公司 | Heat regulation device and heat regulation method |
| CN102711298A (en) * | 2012-05-23 | 2012-10-03 | 美的集团有限公司 | Heating control device and control method for induction cooker |
| CN102802289A (en) * | 2012-07-30 | 2012-11-28 | 东莞市精诚电能设备有限公司 | Electromagnetic induction heating control circuit based on digital signal processing |
| CN102946654A (en) * | 2012-11-14 | 2013-02-27 | 明达实业(厦门)有限公司 | Half-wave electromagnetic field generator |
| CN102946654B (en) * | 2012-11-14 | 2015-11-04 | 明达实业(厦门)有限公司 | A kind of half-wave electromagnetic field generator |
| CN104010399A (en) * | 2013-02-21 | 2014-08-27 | 美的集团股份有限公司 | Electromagnetic heating apparatus and control method thereof |
| CN104010399B (en) * | 2013-02-21 | 2016-02-10 | 美的集团股份有限公司 | Electromagnetic heater and control method thereof |
| CN105960042A (en) * | 2016-06-30 | 2016-09-21 | 浙江天煌科技实业有限公司 | Novel composite control system of induction heating power supply |
| EP3644071A4 (en) * | 2017-07-26 | 2020-07-22 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Sampling current processing circuit, power detection circuit and electromagnetic cooking device |
| CN110613305A (en) * | 2018-06-19 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Power supply control method and power supply control device, storage medium and cooking equipment |
| CN110613305B (en) * | 2018-06-19 | 2021-11-16 | 佛山市顺德区美的电热电器制造有限公司 | Power supply control method and power supply control device, storage medium and cooking equipment |
| CN109600865A (en) * | 2018-12-29 | 2019-04-09 | 杨松 | Steady function electrothermal driving device and its control method |
| CN112714518A (en) * | 2019-10-25 | 2021-04-27 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating equipment, control method and device thereof and storage medium |
| CN112714518B (en) * | 2019-10-25 | 2023-03-21 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating equipment, control method and device thereof and storage medium |
| WO2022143248A1 (en) * | 2020-12-29 | 2022-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Half-bridge-drive heating cookware detection circuit, heating device, cookware detection method, and storage medium |
| CN114007293A (en) * | 2021-10-20 | 2022-02-01 | 成都利尼科医学技术发展有限公司 | Magnetron filament heating current control system |
| CN114007293B (en) * | 2021-10-20 | 2024-03-29 | 成都利尼科医学技术发展有限公司 | Magnetron filament heating current control system |
| CN115884455A (en) * | 2022-12-29 | 2023-03-31 | 广东海明晖电子科技有限公司 | Electromagnetic heating system and low standby power consumption control circuit thereof |
| CN115884455B (en) * | 2022-12-29 | 2023-09-05 | 广东海明晖电子科技有限公司 | Electromagnetic heating system and low standby power consumption control circuit thereof |
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