CN108156680A - A kind of constant-power control circuit and apply its electromagnetic heating apparatus and household electrical appliance - Google Patents
A kind of constant-power control circuit and apply its electromagnetic heating apparatus and household electrical appliance Download PDFInfo
- Publication number
- CN108156680A CN108156680A CN201611101338.1A CN201611101338A CN108156680A CN 108156680 A CN108156680 A CN 108156680A CN 201611101338 A CN201611101338 A CN 201611101338A CN 108156680 A CN108156680 A CN 108156680A
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- circuit
- power
- constant
- power control
- control circuit
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
Abstract
The present invention relates to electromagnetic heating fields, disclose a kind of constant-power control circuit, which includes：Voltage detecting circuit is parallel to the power source bus both ends of the resonance loop, for detecting the busbar voltage Vp of resonance loop；Current detection circuit is series in the resonance loop, for detection loop electric current I；And controller, the controller adjust the power of the resonance circuit according to the voltage Vp and electric current I and predetermined power；Wherein, the output terminal of the resonance circuit, the output terminal of the voltage detecting circuit and the current detection circuit is connected with the controller.
Description
Technical field
The present invention relates to electromagnetic heating technique fields, and in particular, to a kind of constant-power control circuit and apply its electricity
Magnetic heating equipment and household electrical appliance.
Background technology
The principle of electromagnetic heating is to generate alternating magnetic field by electronic circuit board component part, placed when with containing container made of iron
When above, vessel surface is to cut alternate magnetic force line and generate the electric current (being vortexed) of alternation, whirlpool in container bottom metal part
Stream makes the iron atom high speed random motion of container bottom, and atom collides with each other, rubs and generates thermal energy.So as to play heating object
The effect of product.Current electromagnetic oven, electromagnetic stove are all the electromagnetic heating techniques used.The technology is relative to traditional resistance heating
Technology has many advantages, such as long, safe and reliable, energy-efficient, the accurate temperature control of service life, good insulating.
Electromagnetic heating apparatus or household electrical appliance would generally set multiple gears, to be applicable in the demand of actual use.It is and current
Control of the electromagnetic heating technique to power gear, mainly to detect based on the electric current of resonance loop, that is, based in circuit not
Power gear control is carried out with the current value in loop during power also different principle.This control method is typically to develop
Stage test practical power and voltage, and the current value corresponding to required each power gear is recorded, then given birth in product
During production, it is fixed in driver.Then this control mode in actual production can not be adjusted each product, work as electricity
When magnetic heating equipment or household electrical appliance mass production, the power error of each product is larger, and consistency is very poor.And even for
Identical product during the work time since resonant element is influenced by temperature etc., can cause electrical parameter to fluctuate, so as to draw
The actual power for playing product is unstable.
Invention content
The object of the present invention is to provide a kind of constant-power control circuit for electromagnetic heating apparatus, the electromagnetic heating apparatus
Resonance loop including resonance circuit and electric power generating composition, the resonance circuit include transistor and resonance capacitance group into semibridge system
Or full bridge circuit, the constant-power control circuit include：Voltage detecting circuit is parallel to the power source bus two of the resonance loop
End, for detecting the busbar voltage Vp of resonance loop；Current detection circuit is series in the resonance loop, for detecting ring
Road electric current I；And controller, the controller adjust the resonance electricity according to the voltage Vp and electric current I and predetermined power
The power on road；Wherein, the output of the resonance circuit, the output terminal of the voltage detecting circuit and the current detection circuit
End is connected with the controller.
Preferably, the voltage detecting circuit can include resistance device R14, and the power supply for being parallel to the resonance loop is female
Line both ends.
Preferably, the voltage detecting circuit can also include the first voltage-stabilizing device, be parallel to the resistance device R14's
Both ends, for the voltage at steady resistance R14 both ends, in order to which controller is detected the voltage at R14 both ends.
Preferably, the current detection circuit includes：Current transformer, resistance device R1, rectification circuit and resistor
Part R4；The primary coil of wherein described current transformer is series in the resonance loop, and parallel connection of secondary windings is in the resistance
1 both ends of device R；The both ends of the input terminal of the rectification circuit are parallel to the both ends of the resistance device R1, the both ends of output terminal
It is parallel to the both ends of the resistance device R4, one end ground connection of the output terminal of the rectification circuit.
Preferably, the current detection circuit further includes the second voltage-stabilizing device, is connected in parallel on the both ends of the resistance device R4,
For the voltage of steady resistance device R4, in order to which controller is detected the voltage at R4 both ends.
Preferably, the current detection circuit further includes capacitor element C5, be connected in parallel on the both ends of the resistance device R4 with
The voltage at the second voltage-stabilizing device jointly stabilizing resistance device R4 both ends.
Preferably, the current detection circuit further includes filter circuit, is parallel to the two of the output terminal of the rectification circuit
End, for by into DC current, then the DC current is exported to the electricity by the current rectification after the rectifier circuit rectifies
The resistance device of the output terminal of stream detection electric current.
Preferably, the filter circuit includes capacitor element EC3 and resistance device R2, the capacitor element EC3 and described
Resistance device R2 is parallel to the both ends of the output terminal of the rectification circuit after being mutually in parallel.
Wherein, the constant-power control circuit can according to the voltage Vp and the electric current I actual power calculated and
The power difference adjustment of the predetermined power is for driving the duty ratio of the PWM of the transistor, so as to fulfill firm power
Purpose.
Further, the duty ratio of the constant-power control circuit adjustment PWM can be by controller according to following public affairs
Formula is completed：
PWMAfter adjustment=PWMBefore adjustment+Pn+In
Pn=power differences/proportionality coefficient
In=power differences/differential coefficient
Wherein, PWMBefore adjustmentIt is the duty ratio of unadjusted PWM, PWMAfter adjustmentIt is the PWM after being adjusted according to the power difference
Duty ratio, proportionality coefficient and differential coefficient are preset values, can be obtained, are then attached to by repeatedly testing in the development phase
It controls in program.
Further, in order to accurately adjust, the controller can be with the scheduled sampling period to the voltage Vp and institute
It states electric current I to be sampled, and with the point sky ratio of PWM described in scheduled adjustment period modulation.
Further, the power in circuit is made to exceed the range to be controlled the PWM excessively adjustment in order to prevent,
The controller sets bound to the duty ratio of predetermined power and/or the PWM.
Through the above technical solutions, the constant-power control circuit utilizes the busbar voltage and ring of resonance loop detected
Road Current calculation actual power, and the overall power of the adjustment circuit in real time of the difference based on actual power and predetermined power, energy
Enough realize circuit according to the situation of itself to power self-adjusting function, so as to ensure the power invariability in circuit.
Other two aspect of the present invention additionally provides a kind of electromagnetic heating apparatus using the constant-power control circuit
And household electrical appliance, the constant-power control circuit of Pass through above-mentioned technical proposal, it can ensure each gear of the electromagnetic heating apparatus
Power stability, and even if in mass production, also can guarantee the one of the power of each electromagnetic heating apparatus or household electrical appliance
Cause property.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention, but be not construed as limiting the invention together.In the accompanying drawings：
Fig. 1 is the structure chart of according to embodiments of the present invention one invariable power detection circuit；
Fig. 2 is the circuit diagram of according to embodiments of the present invention two invariable power detection slowdown monitoring circuit；
Fig. 3 is the circuit diagram of the preferred embodiment of according to embodiments of the present invention two constant-power control circuit；
Fig. 4 is that according to embodiments of the present invention three constant-power control circuit adjusts the flow chart of power.
Reference sign
100：Resonance loop 110：Resonance circuit
200：Voltage detecting circuit 300：Current detection circuit
310：Rectified current 400：Controller
410：Microcontroller
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is the structure chart of according to embodiments of the present invention one invariable power detection circuit.As shown in Figure 1, the electromagnetic heating
Equipment includes the resonance loop 100 of resonance circuit and electric power generating composition, the resonance circuit include transistor and resonance capacitance group into
Semibridge system or full bridge circuit, the constant-power control circuit include：Voltage detecting circuit 200 is parallel to the resonance loop
Power source bus both ends, for detecting the busbar voltage Vp of resonance loop；Current detection circuit 300 is series at the resonant ring
Lu Zhong, for detection loop electric current I；And controller 400, the controller is according to the voltage Vp and electric current I and presets
The power of resonance circuit described in power regulation；Wherein, the resonance circuit, the output terminal of the voltage detecting circuit and described
The output terminal of current detection circuit is connected with the controller.
Fig. 2 is the circuit diagram of according to embodiments of the present invention two invariable power detection slowdown monitoring circuit.Fig. 2 mainly illustrates the electricity
Detection circuit 200 and the current detection circuit 300 and the specific connection relation of controller and resonance loop are pressed, in Fig. 2 institutes
In the embodiment two shown, controller select be microcontroller 410, can also there is similar functions in practice with FPGA etc. other
Control device replaces.As shown in Fig. 2, ACL, ACN are commercial power interface, BD01 bridge heaps form the power unit of circuit, with capacitance
By commercial power rectification into direct current, resonance loop 110 is connected in busbar device C0, and resonant ring is formed with bridge heap and capacitor element C0
Road 100.Voltage detecting circuit 200 is connected across the both ends of busbar, and current detection circuit 300 is connected in the loop, wherein, electric current inspection
The link position of slowdown monitoring circuit is not limited to position shown in Fig. 2, can be connected on any position of the busbar of resonance loop.It is humorous
The circuit 110 that shakes includes the IGBT of transistor IGBT 1, the half-bridge of IGBT2 and resonant capacitance C1, C2 composition and driving IGBT1
The IGBT drive circuit 2 of driving circuit 1 and driving IGBT2, IGBT moves circuit 1 and IGBT drive circuit 2 is connected to microcontroller
Device 410, microcontroller 410 exports PWM and its driving transistor IGBT1, IGBT2 is controlled to open or end, so as to make resonance circuit
110 generate oscillation under the action of its capacitor and inductor.
Fig. 3 is the circuit diagram of the preferred embodiment of according to embodiments of the present invention two constant-power control circuit.Such as Fig. 3 institutes
Show, the voltage detecting circuit 200 can include resistance device R14, be parallel to the power source bus both ends of the resonance loop.Electricity
The both ends of resistance R14 can be parallel with capacitor element EC0, for the voltage at steady resistance device R14 both ends.Voltage detecting circuit
200 can also include divider resistance R11, R12, R13, and the divider resistance is series in voltage detecting circuit, for voltage
Detection circuit is divided, and the number of divider resistance can be designed according to the practical busbar electric wire size of circuit in practical application
Amount.The AD_V input terminals of the output terminal connection microcontroller 410 of voltage detecting circuit, microcontroller 410 are inputted according to its AD_V
The voltage value VAD_voltage detected is held to calculate the busbar voltage Vp in resonance loop.
As shown in figure 3, the current detection circuit can include：Current transformer T01, resistance device R1, rectification circuit
310 and resistance device R4；The primary coil of wherein described current transformer T01 is series in the resonance loop 100, secondary
For coils from parallel connection of coils in the resistance device R1 both ends, R1 is the output resistance of current transformer；The input terminal of the rectification circuit 310
Both ends be parallel to the both ends of the resistance device R1, resistance device R4 is connected across the both ends of the output terminal of rectification circuit 310, institute
State the output terminal of rectification circuit one end ground connection, voltage output end, that is, current detection circuit 200 of resistance device R4 it is defeated
Outlet is connected to the AD_C input terminals of microcontroller 410, the voltage VADC that microcontroller 410 is detected according to the input terminal
Calculate the electric current I in the resonance loop.
In figure 3, rectification circuit 310 selects the full-wave rectifying circuit being made of diode D1, D2, D3 and D4, and all-wave is whole
The electric current that mutual inductor T01 inducts is carried out preliminary rectification by current circuit, and by after full-wave rectifying circuit rectification, frequency is induced current
Twice before rectification.Capacitor element EC3 and resistance device composition filter circuit in Fig. 3, after 310 rectification of full-wave rectifying circuit
Electric current further under the action of filter circuit, is rectified into DC current.
According to the needs of actual design, the current detection circuit can also have the partial pressure electricity connected with resistance device R4
Resistance, such as the resistance device R3 shown in Fig. 3, the circuit that resistance device R3 is formed after connecting with R4 are connected across the Current Mutual Inductance
The output terminal of device T01.
The both ends of the resistance device R4 can be parallel with capacitor element EC4, for the voltage of steady resistance device R14.
The both ends of resistance device R4 can also further be parallel with capacitor element C5, for filtering the noise signal of output terminal, and with electricity
The voltage of container piece EC4 jointly stabilizing resistance devices R4.
In the present embodiment, capacitor element EC0, EC3, EC4 is preferably electrolytic capacitor.
In circuit as shown in Figure 3, the output voltage VAD_ for the voltage detecting circuit that microcontroller 410 detects
Calculated relationship between the value of voltage and busbar electric wire Vp is：
Wherein, VAD_voltage is the actually detected given value arrived, and female voltage Vp can be calculated by the formula.
The microcontroller calculates the electric current of the resonance loop 100 according to the voltage VADC that its input terminal AD_C is detected
The Computing Principle of I is：
Assuming that the armature winding of current transformer T01 is N1, secondary windings N2, the primary ratio with secondary winding is
N1:N2=1:100.Current transformer T01 first windings and secondary winding have an equal ampere-turn, thus I1 × N1=I2 ×
N2。
The voltage of resistance device R1 is 50Hz alternating voltages, and 100Hz voltages are exported after full-wave rectifying circuit rectification.According to
Full-wave rectification formulaVR1 is the voltage at resistance device R1 both ends, and VEC3 is the electricity of capacitor element EC3
Pressure.Output voltage after full-wave rectifying circuit rectification is by further whole including capacitance EC3 and the rectification circuit of resistance device R2
Flow into DC voltage.Therefore, the voltage of resistance device R3, R4 and capacitor element EC4, C5 are DC voltage.Wherein
Primary current I=100IR1.
Wherein, according to the anti-calculation formula of capacitance group in parallel with a resistor：Because flow through resistor
The electric current of part R3, R4 and capacitor element EC4, C5 are direct current, therefore f is 0, and the impedance of capacitance EC4 and C are also 0.
To sum up, the formula for finally calculating loop current I is as follows：
And then the practical work(that the constant-power control circuit can be calculated according to the busbar voltage Vp and electric current I
The adjustment of the power difference of rate and the predetermined power is for driving the duty ratio of the PWM of the transistor, so as to fulfill work(is stablized
The purpose of rate.
Fig. 4 is that according to embodiments of the present invention three constant-power control circuit adjusts the flow chart of power.It is sharp in the present embodiment
With the ratio and integral part in pid algorithm, using mode of the actual power compared with predetermined power, adjustment drives the crystal
The duty ratio of the PWM of pipe, so as to fulfill the purpose for ensureing the power invariability in circuit.
First, controller is detected the electric current I in the busbar voltage Vp and loop of resonance loop, and counting circuit
Actual power then according to actual power and the difference of predetermined power, adjusts the duty ratio of the PWM, adjusts the PWM's
Duty ratio can be completed by controller according to the following formula：
PWMAfter adjustment=PWMBefore adjustment+Pn+In
Pn=power differences/proportionality coefficient
In=power differences/differential coefficient
Wherein, PWMBefore adjustmentIt is the duty ratio of unadjusted PWM, PWMAfter adjustmentIt is the PWM after being adjusted according to the power difference
Duty ratio, proportionality coefficient and differential coefficient are preset values, can by develop test after select suitable value and be fixed on control
In program.
Further, in order to accurately adjust, the controller can be with the scheduled sampling period to the voltage Vp and institute
It states electric current I to be sampled, and with the duty ratio of PWM described in scheduled adjustment period modulation, for example, busbar voltage and current sample
Period is 5ms, and pid algorithm is 50ms to the adjustment period of PWM.
Further, the power in circuit is made to exceed the range to be controlled the PWM excessively adjustment in order to prevent,
The controller sets bound to the duty ratio of predetermined power and/or the PWM.
When the constant-power control circuit is applied in electromagnetic electrothermic equipment or household electrical appliance, can be set according to its function
The demand of meter sets the predetermined power of each gear, when the electromagnetic heating apparatus or household electrical appliance are adjusted to corresponding gear,
Controller according to the corresponding predetermined power of the gear compared with the actual power of current circuit, so as to adjust driving transistor
The duty ratio of PWM makes the real work power of integrated circuit be adjusted to the power being adapted with the gear, and keeps the power
It works.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (14)
1. a kind of constant-power control circuit for electromagnetic heating apparatus, which includes resonance circuit and power supply structure
Into resonance loop, the resonance circuit include transistor and resonance capacitance group into semibridge system or full bridge circuit, feature
It is, which includes：
Voltage detecting circuit is parallel to the power source bus both ends of the resonance loop, for detecting the busbar voltage of resonance loop
Vp；
Current detection circuit is series in the resonance loop, for detection loop electric current I；And
Controller, the controller adjust the power of the resonance circuit according to the voltage Vp and electric current I and predetermined power；
Wherein, the output terminal of the resonance circuit, the output terminal of the voltage detecting circuit and the current detection circuit with
The controller is connected.
2. constant-power control circuit according to claim 1, which is characterized in that the voltage detecting circuit includes resistor
Part R14 is parallel to the power source bus both ends of the resonance loop.
3. constant-power control circuit according to claim 1, which is characterized in that it is steady that the voltage detecting circuit includes first
Voltage device is parallel to the both ends of the resistance device R14.
4. constant-power control circuit according to claim 1, which is characterized in that the current detection circuit includes：Electric current
Mutual inductor, resistance device R1, rectification circuit and resistance device R4；Wherein
The primary coil of the current transformer is series in the resonance loop, and parallel connection of secondary windings is in the resistance device R1
Both ends；
The both ends of the input terminal of the rectification circuit are parallel to the both ends of the resistance device R1, and the both ends of output terminal are parallel to institute
State the both ends of resistance device R4, one end ground connection of the output terminal of the rectification circuit.
5. constant-power control circuit according to claim 4, which is characterized in that the current detection circuit further includes second
Voltage-stabilizing device is connected in parallel on the both ends of the resistance device R4.
6. constant-power control circuit according to claim 4, which is characterized in that the current detection circuit further includes capacitance
Device C5 is connected in parallel on the both ends of the resistance device R4.
7. constant-power control circuit according to claim 4, which is characterized in that the current detection circuit further includes filtering
Circuit is parallel to the both ends of the output terminal of the rectification circuit.
8. constant-power control circuit according to claim 4, which is characterized in that the filter circuit includes capacitor element
EC3 and resistance device R2, the capacitor element EC3 and the resistance device R2 are parallel to the rectification circuit after being mutually in parallel
The both ends of output terminal.
9. according to the constant-power control circuit described in any one of claim 1-8, which is characterized in that according to the voltage Vp and
The electric current I calculates actual power, and is adjusted according to the power difference of actual power and predetermined power to drive the crystal
The duty ratio of the PWM of pipe.
10. constant-power control circuit according to claim 9, which is characterized in that the controller is according to the following formula tune
The duty ratio of the whole PWM：
PWMAfter adjustment=PWMBefore adjustment+Pn+In
Pn=power differences/proportionality coefficient
In=power differences/differential coefficient
Wherein, PWMBefore adjustmentIt is the duty ratio of unadjusted PWM, PWMAfter adjustmentIt is accounting for for the PWM after being adjusted according to the power difference
Empty ratio, proportionality coefficient and differential coefficient are preset values.
11. constant-power control circuit according to claim 10, which is characterized in that the controller is with scheduled sampling week
Phase samples the voltage Vp and the electric current I, and with the point sky ratio of PWM described in scheduled adjustment period modulation.
12. the constant-power control circuit according to claim 10 or 11, which is characterized in that the controller is to predetermined power
And/or the duty ratio setting bound of the PWM.
13. a kind of electromagnetic heating apparatus, it is characterised in that including the constant-power control circuit described in claim 1-12.
14. a kind of household electrical appliance, it is characterised in that including the constant-power control circuit described in claim 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101338.1A CN108156680A (en) | 2016-12-02 | 2016-12-02 | A kind of constant-power control circuit and apply its electromagnetic heating apparatus and household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101338.1A CN108156680A (en) | 2016-12-02 | 2016-12-02 | A kind of constant-power control circuit and apply its electromagnetic heating apparatus and household electrical appliance |
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| CN108156680A true CN108156680A (en) | 2018-06-12 |
Family
ID=62470297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611101338.1A Pending CN108156680A (en) | 2016-12-02 | 2016-12-02 | A kind of constant-power control circuit and apply its electromagnetic heating apparatus and household electrical appliance |
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| CN (1) | CN108156680A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600865A (en) * | 2018-12-29 | 2019-04-09 | 杨松 | Steady function electrothermal driving device and its control method |
| CN110171018A (en) * | 2019-05-25 | 2019-08-27 | 塞伯睿机器人技术（长沙）有限公司 | Robot motor starts control device |
| WO2023109916A1 (en) * | 2021-12-17 | 2023-06-22 | 广东美的白色家电技术创新中心有限公司 | Power control circuit and power control method for electromagnetic heating device |
| WO2023115948A1 (en) * | 2021-12-21 | 2023-06-29 | 海南摩尔兄弟科技有限公司 | Heating control method, device, and circuit, and atomization device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925209A (en) * | 2010-07-22 | 2010-12-22 | 深圳和而泰智能控制股份有限公司 | Hardware constant power control circuit and electromagnetic induction heating device |
| CN101944855A (en) * | 2009-07-07 | 2011-01-12 | 深圳市鑫汇科科技有限公司 | Digital control power supply converter for kitchen range |
| CN103763803A (en) * | 2014-01-23 | 2014-04-30 | 美的集团股份有限公司 | Electromagnetic resonance control circuit, electromagnetic heating device and method for controlling transistor |
| CN203645850U (en) * | 2013-12-03 | 2014-06-11 | 郑州航空工业管理学院 | Control device of high power induction cooker |
| CN206517627U (en) * | 2016-12-02 | 2017-09-22 | 佛山市顺德区美的电热电器制造有限公司 | A kind of constant-power control circuit and apply its electromagnetic heating apparatus and household electrical appliance |
-
2016
- 2016-12-02 CN CN201611101338.1A patent/CN108156680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944855A (en) * | 2009-07-07 | 2011-01-12 | 深圳市鑫汇科科技有限公司 | Digital control power supply converter for kitchen range |
| CN101925209A (en) * | 2010-07-22 | 2010-12-22 | 深圳和而泰智能控制股份有限公司 | Hardware constant power control circuit and electromagnetic induction heating device |
| CN203645850U (en) * | 2013-12-03 | 2014-06-11 | 郑州航空工业管理学院 | Control device of high power induction cooker |
| CN103763803A (en) * | 2014-01-23 | 2014-04-30 | 美的集团股份有限公司 | Electromagnetic resonance control circuit, electromagnetic heating device and method for controlling transistor |
| CN206517627U (en) * | 2016-12-02 | 2017-09-22 | 佛山市顺德区美的电热电器制造有限公司 | A kind of constant-power control circuit and apply its electromagnetic heating apparatus and household electrical appliance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600865A (en) * | 2018-12-29 | 2019-04-09 | 杨松 | Steady function electrothermal driving device and its control method |
| CN110171018A (en) * | 2019-05-25 | 2019-08-27 | 塞伯睿机器人技术（长沙）有限公司 | Robot motor starts control device |
| WO2023109916A1 (en) * | 2021-12-17 | 2023-06-22 | 广东美的白色家电技术创新中心有限公司 | Power control circuit and power control method for electromagnetic heating device |
| WO2023115948A1 (en) * | 2021-12-21 | 2023-06-29 | 海南摩尔兄弟科技有限公司 | Heating control method, device, and circuit, and atomization device |
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