CN108243516A - A kind of Poewr control method of electromagnetic heating apparatus, device and electromagnetic heating apparatus - Google Patents
A kind of Poewr control method of electromagnetic heating apparatus, device and electromagnetic heating apparatus Download PDFInfo
- Publication number
- CN108243516A CN108243516A CN201810110716.5A CN201810110716A CN108243516A CN 108243516 A CN108243516 A CN 108243516A CN 201810110716 A CN201810110716 A CN 201810110716A CN 108243516 A CN108243516 A CN 108243516A
- Authority
- CN
- China
- Prior art keywords
- power
- electromagnetic heating
- heating apparatus
- control signal
- pwm
- 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.)
- Granted
Links
Classifications
-
- 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
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
The present invention is suitable for household appliance technical field, provides a kind of Poewr control method of electromagnetic heating apparatus, device and electromagnetic heating apparatus, the wherein Poewr control method, applied to the electromagnetic heating apparatus of half-bridge topology, described method includes following steps：Target power and predetermined power are obtained, and the target power is compared with the predetermined power；If the target power is less than or equal to predetermined power, the duty ratio of pwm control signal is adjusted, the currently practical power of the electromagnetic heating apparatus is made to reach the target power.The Poewr control method of electromagnetic heating apparatus provided by the invention, when target power is less than predetermined power, realize that electromagnetic heating apparatus exports low power purpose by way of reducing PWM control signal duty cycle, without intermittent heating, make cooking to food, culinary art effect more preferable, user is made to obtain better usage experience.
Description
Technical field
The invention belongs to household appliance technical field more particularly to a kind of Poewr control method of electromagnetic heating apparatus, device and
Electromagnetic heating apparatus.
Background technology
The electromagnetic heating apparatus such as electromagnetic oven, electromagnetic stove have become product indispensable for people's lives.Using these electricity
During magnetic heating equipment, it is often necessary to be heated using small-power, such as when fried egg, Baoshang, if heating power is excessive
Food materials can be caused to destroy, influence the mouthfeel even appetite of user of food.
At present, electromagnetic heating apparatus generally use topology type half-bridge principle of heating, the higher heating power of general work frequency
It is lower, so can achieve the purpose that reduce heating power by the way that working frequency is turned up, but due to circuit and component certainly
The limitation of body characteristic, such as working frequency are higher, and the consumes of IGBT switching power tubes is bigger, fever is more serious, and when frequency liter
It is high to a certain extent when, IGBT switching power tubes will be fallen into hard switching operating mode by Sofe Switch operating mode, reduce its work
The stability and security performance of work, so working frequency cannot be further continued for increasing, thus the minimum of electromagnetic heating apparatus adds
Thermal power is so limited.Under normal circumstances, working frequency is no more than 60KHZ, and heating power at this time still can only drop to
300-500W.In order to obtain lower heating power, then intermittent heating means can only be used, that is, allow electromagnetic heating apparatus to food
Object heating a period of time is then shut off a period of time, repeats the operation to reach the heating effect similar with lower heating power,
But this method can make cooker be heated not enough uniformly, and user experience is bad.
Invention content
The embodiment of the present invention provides a kind of Poewr control method of electromagnetic heating apparatus, it is intended to solve existing electromagnetic heating and set
It is standby to be heated by intermittent come the problem of reducing heating power.
The embodiment of the present invention is achieved in that a kind of Poewr control method of electromagnetic heating apparatus, is opened up applied to half-bridge
The electromagnetic heating apparatus of structure is flutterred, described method includes following steps：
It obtains target power and predetermined power and the target power is compared with the predetermined power；
If the target power is less than or equal to predetermined power, the duty ratio of pwm control signal is adjusted, makes the electromagnetism
The currently practical power of heating equipment reaches the target power.
The present invention also provides a kind of power control device of electromagnetic heating apparatus, the electromagnetism applied to half-bridge topology
Heating equipment, described device include：
Power obtaining unit for obtaining target power and predetermined power, and the target power is preset with described
Power is compared；
First power control unit if being less than or equal to predetermined power for the target power, adjusts PWM control letters
Number duty ratio, the currently practical power of the electromagnetic heating apparatus is made to reach the target power.
The embodiment of the present invention additionally provides a kind of electromagnetic heating apparatus, and the electromagnetic heating apparatus includes：
Control unit, the control unit include the power control device of the electromagnetic heating apparatus described in above-mentioned any one；
The half-bridge topology circuit being connected with the control unit；And
The induction coil being connected with the half-bridge topology circuit.
The Poewr control method of electromagnetic heating apparatus provided by the invention when target power is less than predetermined power, passes through
The mode for reducing PWM control signal duty cycle realizes that electromagnetic heating apparatus exports low power purpose, without intermittent heating, makes
Cooking, culinary art effect to food is more preferable, and user is made to obtain better usage experience.
Description of the drawings
Fig. 1 is a kind of control mode flow of the Poewr control method of electromagnetic heating apparatus provided in an embodiment of the present invention
Figure；
Fig. 2 is another control mode flow of the Poewr control method of electromagnetic heating apparatus provided in an embodiment of the present invention
Figure；
Fig. 3 is provided in an embodiment of the present invention to adjust the flow chart of power by controlling the duty ratio of pwm control signal；
Fig. 4 is the functional block diagram of control device provided in an embodiment of the present invention；
Fig. 5 is another functional block diagram of control device provided in an embodiment of the present invention；
Fig. 6 is a kind of oscillogram of pwm control signal provided in an embodiment of the present invention；
Fig. 7 is the oscillogram of another pwm control signal provided in an embodiment of the present invention；
Fig. 8 is the partial circuit diagram of electromagnetic heating apparatus heating part provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The Poewr control method of electromagnetic heating apparatus provided by the invention when target power is less than predetermined power, passes through
The mode for reducing pwm signal duty ratio controls the work of electromagnetic heating apparatus, can be dropped in the case where not improving working frequency
The heating power of low electromagnetic heating apparatus.
The specific implementation of the present invention is described in detail below in conjunction with specific embodiment.
The Poewr control method of electromagnetic heating apparatus provided by the invention, the electromagnetic heating applied to half-bridge topology are set
It is standby, specifically as shown in Figure 1, this method comprises the following steps：
Step S1 obtains target power and predetermined power, and the target power and the predetermined power is compared
It is right；
In embodiment provided by the invention, target power refer to user to input required of electromagnetic heating apparatus plus
Thermal power, user to the setting of heating power input can be pressed by touch-control, the modes such as turn knob, gesture identification, this
Invention is not intended to be limited in any herein.
In addition, predetermined power refers to the pre-stored heating power of electromagnetic heating apparatus, which is used to sentence
Which kind of power control mode disconnected electromagnetic heating apparatus will enter, and the present invention relates to two kinds of power control modes, one kind is small-power
Control model, another kind are non-small-power control models.The size of predetermined power is generally set between 200W-500W, works as mesh
When marking power less than or equal to predetermined power, into small-power control model；When target power is more than predetermined power, entrance is non-
Small-power control model.
Step S2 if the target power is less than or equal to predetermined power, adjusts the duty ratio of pwm control signal, makes
The currently practical power of the electromagnetic heating apparatus reaches the target power.
In embodiment provided by the invention, the conducting of IGBT switching tubes and shutdown are controlled by PWM control modes
(PWM is the abbreviation of Pulse Width Modulation, i.e., is modulated to the width of pulse), be less than when target power or
During equal to preset power, PWM control signal duty cycle (pulse width for reducing pwm control signal) can be reduced, so as to
The effective operation interval of pwm control signal is reduced, and then achievees the purpose that reduce heating power.That is, the present invention is by reducing PWM controls
The pulse width of signal processed come achieve the purpose that reduce electromagnetic heating apparatus heating power, can be realized without excessively intermittent heating
Small heating power needed for electromagnetic heating apparatus output user, can make electromagnetic heating apparatus continuously export small work(in this way
Rate is not in the non-uniform phenomenon of heating temperature, user is made to obtain better usage experience.
Caused by the frequency that reduction pwm control signal can be made up by reducing the duty ratio of pwm control signal simultaneously
The rising of heating power, i.e., can by reducing PWM control signal duty cycle come when reducing the heating power of electromagnetic heating apparatus
Suitably to reduce the frequency of pwm control signal, so as to reduce the loss of IGBT switching tubes, that improves entire circuit uses the longevity
Life.
As shown in figure 5, in embodiment provided by the invention, pwm control signal is the two-way PWM letters with dead zone complementation
Number.
Wherein, as shown in Fig. 2, in embodiment provided by the invention, in step S1, target power and default work(are obtained
It is further included after the step of rate：
S2 ' if the target power is more than the predetermined power, adjusts the frequency of the pwm control signal, makes described
The currently practical power of electromagnetic heating apparatus reaches target power.That is, when target power is more than predetermined power, pass through control
The frequency of pwm control signal improves the heating power of electromagnetic heating apparatus.Specifically, the frequency by reducing pwm control signal
Rate mode improves the heating power of electromagnetic heating apparatus, is added to reduce electromagnetism by the Frequency Patterns for increasing pwm control signal
The heating power of hot equipment.
As shown in figure 3, in embodiment provided by the invention, step S2, i.e., " if the target power is less than or equal in advance
If power, then the duty ratio of pwm control signal is adjusted, the power of the electromagnetic heating apparatus is made to reach the target power ", tool
Body is：
Step S21, when the target power is less than or equal to predetermined power, by the frequency tune of the pwm control signal
To predeterminated frequency, and obtain the currently practical power of the electromagnetic heating apparatus.
It in the present embodiment, can be first by the frequency of pwm control signal when target power is less than or equal to preset power
Predeterminated frequency is adjusted to, since the higher IGBT switching tubes fever of the frequency of pwm control signal is more apparent, so being opened to reduce IGBT
The fever of pipe is closed, predeterminated frequency is arranged between 15KHz-60KHz by the present embodiment.In addition, it is fallen into when frequency is less than 18KHZ
In the audibility range of human ear, larger noise is generated, influences the physical and mental health of people, so as it is further preferred that default
Set of frequency is between 18KHz-25KHz, for example is set as 20KHZ.
The currently practical power for obtaining electromagnetic heating apparatus is to judge relative to power set by user, and being should be
Power is improved on the basis of currently practical power still reduces power.So this control method is further comprising the steps of：
Step S22, if the currently practical power of the electromagnetic heating apparatus be less than the target power, improve described in
The duty ratio of pwm control signal so as to improve the effective operation interval of pwm control signal, improves the heating work(of electromagnetic heating apparatus
Rate.
Step S22 ', if the currently practical power of the electromagnetic heating apparatus be more than the target power, reduce described in
The duty ratio of pwm control signal so as to reduce the effective operation interval of pwm control signal, reduces the heating work(of electromagnetic heating apparatus
Rate.
It is by adjusting pwm frequency signal when target power is higher than predetermined power in addition, in actual use
Mode adjusts the output power of electromagnetic heating apparatus, if predetermined power size is fixed, the frequency of the higher pwm control signal of operating voltage
Rate is also higher, and the switching loss of IGBT switching tubes is also higher, is unfavorable for the reliably working of IGBT switching tubes, and efficiency of energy utilization
It is relatively low.In order to improve this problem, in another embodiment provided by the invention, by the target power and predetermined power
Before being compared, further include：Judge the operating voltage of the half-bridge electromagnetic heater, institute is adjusted according to the operating voltage
State predetermined power.I.e. in the present embodiment, predetermined power is a value changed.Predetermined power is improved when operating voltage is higher,
It can enter adjustment PWM control signal duty cycle as early as possible in this way to adjust the pattern of the output power of electromagnetic heating apparatus.Because
By adjusting PWM control signal duty cycle come to adjust the pattern of the output power of electromagnetic heating apparatus be to be operated in relatively low PWM
In frequency, the switching loss of IGBT switching tubes is relatively low, and fever is smaller, not only contributes to the reliably working of switching tube in this way, moreover it is possible to
Improve efficiency of energy utilization.
As shown in Figure 6, Figure 7, in embodiment provided by the invention, when pwm control signal is the two-way with dead zone complementation
During pwm signal, this Poewr control method further includes following steps：
In a cycle T of the pwm control signal, control first via pwm signal exports high level within the T1 times,
After postponing the t1 times, the second road pwm signal of control exports high level within the T2 times, and next period is entered after the t2 times；
Wherein, T1 and T2 are all higher than upper and lower bridge arm switching tube and open the required time, and t1 and t2 is all higher than the dead of controlled switching tube
Area's time, and t1 or t2 is not less than 3 times of the greater in T1 and T2.
That is, as shown in figure 8, in a work period T of pwm control signal, in order to reduce heating power, reduce respectively
First via pwm signal (pwm control signal for controlling the IGBT switching tubes Q1 of upper bridge arm) and the second road pwm signal is (i.e.
Control lower bridge arm IGBT switching tubes Q2 pwm control signal) pulse width, wherein in order to open the IGBT of upper and lower bridge arm
Closing pipe can work normally, and T1 and the time of T2 are all higher than the time that IGBT switching tubes are connected.In order to avoid upper and lower bridge arm
IGBT switching tubes Q1 and Q2 are simultaneously turned on, and lead to short circuit, and t1 and t2 is all higher than the dead time of IGBT switching tubes.In order to make
The heating power of electromagnetic heating apparatus can be reduced to an ideal numerical value, and in the present embodiment, the time of t1 or t2 are set
3 times not less than the greater in T1 and T2 put.
In addition, as shown in fig. 6, in a kind of specific embodiment of the present embodiment, control, reduce soft in order to facilitate software
Part writes difficulty, and two-way pwm signal is symmetrical arranged, i.e., TI is equal with the numerical value setting of T2, and the numerical value of t1 and t2 is set
It is equal.
As shown in fig. 7, in another specific embodiment of the present embodiment, it is non-right that two-way pwm signal can also use
Claim setting, IGBT switching tubes can be made to be easier to enter Sofe Switch in this way, reduce the fever of IGBT switching tubes.Specifically, at this
It is in embodiment, TI is equal with the numerical value setting of T2, the numerical value of t1 and t2 is set unequal.
In conclusion the Poewr control method of electromagnetic heating apparatus provided by the invention, is less than default work(in target power
During rate, (pulse width is reduced) to realize reduction electromagnetic heating apparatus by way of reducing PWM control signal duty cycle
Power realizes, while reduces pwm control signal pulse width and can reduce heating power, reduces pwm control signal pulse frequency
Rate can reduce the consume of IGBT switching tubes, but can improve heating power, so during actually controlling, it can be by PWM
The frequency of control signal is reduced to preset frequency, and reduce heating power by reducing the pulse width of pwm control signal
(rising that can make up heating power caused by the frequency for reducing pwm control signal), can by reasonable set to the two
To reach reduction heating power, without intermittent heating, while the effect of IGBT switching tubes consume can also be reduced.
The present invention also provides a kind of power control device of electromagnetic heating apparatus, which is applied to half-bridge
The electromagnetic heating apparatus of topological structure, wherein, as shown in figure 4, the power control device includes：
Power obtaining unit 100, for obtaining target power and predetermined power, and by the target power with it is described pre-
If power is compared；First power control unit 200 if being less than or equal to predetermined power for target power, adjusts PWM
The duty ratio of signal is controlled, the currently practical power of electromagnetic heating apparatus is made to reach the target power.
In embodiment provided by the invention, target power refer to user to input required of electromagnetic heating apparatus plus
Thermal power, user to the setting of heating power input can be pressed by touch-control, the modes such as turn knob, gesture identification, with
It is corresponding, power obtaining unit can be touch control induction device, knob assembly, gesture identifying device etc..
In addition, predetermined power refers to pre-stored heating power during electromagnetic heating apparatus production, the predetermined power
For judging which kind of power control mode electromagnetic heating apparatus will enter, this practicality, which is invented, is related to two kinds of power control modes, and one
Kind is small-power control model, and another kind is non-small-power control model.The size of predetermined power can be generally set in
Between 200W-500W, when target power is less than or equal to predetermined power, into small-power control model；When target power is big
When predetermined power, into non-small-power control model.
In embodiment provided by the invention, the conducting of IGBT switching tubes and shutdown are controlled by PWM control modes
(PWM is the abbreviation of Pulse Width Modulation, i.e., is modulated to the width of pulse), be less than when target power or
During equal to preset power, PWM control signal duty cycle can be reduced by the first power control unit (reduces PWM controls
The pulse width of signal), so as to reduce the effective operation interval of pwm control signal, and then achieve the purpose that reduce heating power.
That is, the present invention achievees the purpose that reduce electromagnetic heating apparatus heating power, nothing by reducing the pulse width of pwm control signal
It needed intermittent heating that can realize the small heating power needed for electromagnetic heating apparatus output user, and can add electromagnetism in this way
Hot equipment continuously exports small-power, is not in the phenomenon that heating temperature is suddenly big or suddenly small, and user is made to obtain preferably using body
It tests.
Caused by the frequency that reduction pwm control signal can be made up by reducing the duty ratio of pwm control signal simultaneously
The rising of heating power, i.e., can by reducing PWM control signal duty cycle come when reducing the heating power of electromagnetic heating apparatus
Suitably to reduce the frequency of pwm control signal, so as to reduce the loss of IGBT switching tubes, that improves entire circuit uses the longevity
Life.
As shown in fig. 7, in embodiment provided by the invention, pwm control signal is the two-way PWM letters with dead zone complementation
Number.Specifically as shown in fig. 6, controlling the conducting and shutdown of two IGBT switching tubes Q1, Q2 by pwm control signal, and then control
Inductance L processed forms oscillating circuit with two capacitances C1, C2 respectively.
As shown in Figure 5 in embodiment provided by the invention, which further includes：
Second power control unit 200 ' if being more than the predetermined power for the target power, adjusts the PWM
The frequency of signal is controlled, the currently practical power of the electromagnetic heating apparatus is made to reach target power.That is, when input power is more than
During predetermined power, the frequency of pwm control signal is controlled to improve the heating of electromagnetic heating apparatus by the second power control unit
Power.Specifically, improving the heating power of electromagnetic heating apparatus by reducing the Frequency Patterns of pwm control signal, pass through liter
The Frequency Patterns of high pwm control signal reduce the heating power of electromagnetic heating apparatus.
In embodiment provided by the invention, the first power control unit is additionally operable to：
When the target power is less than or equal to predetermined power, the frequency of the pwm control signal is adjusted to default frequency
Rate, and obtain the currently practical power of the electromagnetic heating apparatus；If the currently practical power of the electromagnetic heating apparatus is less than
The target power then improves the duty ratio of the pwm control signal；If the currently practical power of the electromagnetic heating apparatus is big
In the target power, then reduce the duty ratio of the pwm control signal.
That is, in the present embodiment, when target power is less than or equal to preset power, the first power control list can be passed through
The frequency of pwm control signal is adjusted to preset frequency by member, due to the higher IGBT switching tubes fever of the frequency of pwm control signal more
Significantly, so in order to reduce the fever of IGBT switching tubes, predeterminated frequency is arranged between 15KHz-60KHz by the present embodiment.This
Outside, it is fallen into the audibility range of human ear when frequency is less than 18KHZ, generates larger noise, influence the physical and mental health of people, institute
Using as between it is further preferred that predeterminated frequency is arranged on 18KHz-25KHz, for example it is set as 20KHZ.
The currently practical power for obtaining electromagnetic heating apparatus is to judge relative to target power, and being should be current real
On the basis of the power of border improve power still reduce power, when currently practical power be less than target power, then increase PWM control letter
Number duty ratio, so as to improve the effective operation interval of pwm control signal, improve the heating power of electromagnetic heating apparatus；It is if current
Actual power is more than target power, then reduces the duty ratio for being afraid of pwm control signal, effectively work so as to reduce pwm control signal
Section reduces the heating power of electromagnetic heating apparatus.
It is by adjusting pwm frequency signal when target power is higher than predetermined power in addition, in actual use
Mode adjusts the output power of electromagnetic heating apparatus, if predetermined power size is fixed, the frequency of the higher pwm control signal of operating voltage
Rate is also higher, and the switching loss of IGBT switching tubes is also higher, is unfavorable for the reliably working of IGBT switching tubes, and efficiency of energy utilization
It is relatively low.In order to improve this problem, in another embodiment provided by the invention, this equipment further includes：Voltage judging unit,
For before the target power is compared the power obtaining unit with the predetermined power, judging the half-bridge electricity
The operating voltage of magnetic heating unit, and the predetermined power is adjusted according to the operating voltage.I.e. in the present embodiment, work(is preset
Rate is a value changed.Predetermined power is improved when operating voltage is higher, can be accounted for as early as possible into adjustment pwm control signal in this way
The empty pattern than to adjust the output power of electromagnetic heating apparatus.Because adjust electricity by adjusting PWM control signal duty cycle
The pattern of the output power of magnetic heating equipment is operated in relatively low PWM frequency, and the switching loss of IGBT switching tubes is relatively low, hair
Heat is smaller, not only contributes to the reliably working of switching tube in this way, moreover it is possible to improve efficiency of energy utilization.
As shown in Figure 6, Figure 7, in embodiment provided by the invention, which further includes：Pwm control signal
Setup unit, in a cycle T of pwm control signal, control first via pwm signal to export high electricity within the T1 times
Flat, after postponing the t1 times, the second road pwm signal of control exports high level within the T2 times, and next week is entered after the t2 times
Phase；Wherein, T1 and T2 are all higher than upper and lower bridge arm switching tube and open the required time, and t1 and t2 is all higher than controlled switching tube
Dead time, and t1 or t2 is not less than 3 times of the greater in T1 and T2.
That is, as shown in figure 8, in a work period T of pwm control signal, in order to reduce heating power, reduce respectively
First via pwm signal (pwm control signal for controlling the IGBT switching tubes Q1 of upper bridge arm) and the second road pwm signal is (i.e.
Control lower bridge arm IGBT switching tubes Q2 pwm control signal) pulse width, wherein in order to open the IGBT of upper and lower bridge arm
Closing pipe can work normally, and T1 and the time of T2 are all higher than the time that IGBT switching tubes are connected.In order to avoid upper and lower bridge arm
IGBT switching tubes Q1 and Q2 are simultaneously turned on, and lead to short circuit, and t1 and t2 is all higher than the dead time of IGBT switching tubes.In order to make
The heating power of electromagnetic heating apparatus can be reduced to an ideal numerical value, and in the present embodiment, the time of t1 or t2 are set
3 times not less than the greater in T1 and T2 put.
In addition, as shown in fig. 6, in a kind of specific embodiment of the present embodiment, control, reduce soft in order to facilitate software
Part writes difficulty, and two-way pwm signal is symmetrical arranged, i.e., TI is equal with the numerical value setting of T2, and the numerical value of t1 and t2 is set
It is equal.
As shown in fig. 7, in another specific embodiment of the present embodiment, it is non-right that two-way pwm signal can also use
Claim setting, IGBT switching tubes can be made to be easier to enter Sofe Switch in this way, reduce the fever of IGBT switching tubes.Specifically, at this
It is in embodiment, TI is equal with the numerical value setting of T2, the numerical value of t1 and t2 is set unequal.
In addition, the present invention also provides a kind of electromagnetic heating apparatus, electromagnetic heating apparatus includes：Control unit, the control
Portion includes the power control device of the electromagnetic heating apparatus described in above-described embodiment, is stated in order to avoid repeating to tire out, the present embodiment exists
This does not do repeated explanation to control device；The half-bridge topology circuit being connected with control unit；It is and electric with half-bridge topology
The induction coil that road is connected.
The electromagnetic heating apparatus of this offer has used above-mentioned power control device so that this electromagnetic heating apparatus is working
When, it can achieve the purpose that low-power heating without intermittent heating, this electromagnetic heating apparatus is made to imitate cooking, the culinary art of food
Fruit is more preferable, improves the usage experience of user.
If above-mentioned each unit realized in the form of SFU software functional unit and be independent product sale or in use,
It can be stored in a computer read/write memory medium.Based on such understanding, the present invention realizes above-described embodiment method
In all or part of flow, relevant hardware can also be instructed to complete by computer program, the computer journey
Sequence can be stored in a computer readable storage medium, and the computer program is when being executed by processor, it can be achieved that above-mentioned each
The step of embodiment of the method.Wherein, the computer program includes computer program code, and the computer program code can be with
For source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium can wrap
It includes：Any entity of the computer program code or device, recording medium, USB flash disk, mobile hard disk, magnetic disc, light can be carried
Disk, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random
Access Memory), electric carrier signal, electric signal and software distribution medium etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (15)
1. a kind of Poewr control method of electromagnetic heating apparatus, applied to the electromagnetic heating apparatus of half-bridge topology, feature
It is, described method includes following steps：
Target power and predetermined power are obtained, and the target power is compared with the predetermined power；
If the target power is less than or equal to predetermined power, the duty ratio of pwm control signal is adjusted, makes the electromagnetic heating
The currently practical power of equipment reaches the target power.
2. the Poewr control method of electromagnetic heating apparatus as described in claim 1, which is characterized in that the pwm control signal
For the two-way pwm signal with dead zone complementation.
3. the Poewr control method of electromagnetic heating apparatus as claimed in claim 2, which is characterized in that the acquisition target power
And it is further included after the step of predetermined power：
If the target power is more than the predetermined power, the frequency of the pwm control signal is adjusted, makes the electromagnetic heating
The currently practical power of equipment reaches target power.
4. the Poewr control method of electromagnetic heating apparatus as described in claim 1, which is characterized in that if the target work(
Rate is less than or equal to predetermined power, then adjusts the duty ratio of pwm control signal, the power of the electromagnetic heating apparatus is made to reach institute
The step of stating target power be specially：
When the target power is less than or equal to predetermined power, the frequency of the pwm control signal is adjusted to predeterminated frequency, and
Obtain the currently practical power of the electromagnetic heating apparatus；
If the currently practical power of the electromagnetic heating apparatus is less than the target power, the pwm control signal is improved
Duty ratio；
If the currently practical power of the electromagnetic heating apparatus is more than the target power, reduce the pwm control signal
Duty ratio.
5. the Poewr control method of electromagnetic heating apparatus as claimed in claim 4, which is characterized in that the predeterminated frequency is
18KHz-25KHz。
6. the Poewr control method of electromagnetic heating apparatus as described in claim 1, which is characterized in that described by the target work(
Before rate is compared with the predetermined power, further include：The operating voltage of the half-bridge electromagnetic heater is judged, according to institute
It states operating voltage and adjusts the predetermined power.
7. the Poewr control method of electromagnetic heating apparatus as claimed in claim 2, which is characterized in that the method further include as
Lower step：
In a cycle T of the pwm control signal, control first via pwm signal exports high level within the T1 times, postpones
After the t1 times, the second road pwm signal of control exports high level within the T2 times, and next period is entered after the t2 times；
Wherein, T1 and T2 are all higher than upper and lower bridge arm switching tube and open the required time, and t1 and t2 is all higher than controlled switching tube
Dead time, and t1 or t2 is not less than 3 times of the greater in T1 and T2.
8. a kind of power control device of electromagnetic heating apparatus, applied to the electromagnetic heating apparatus of half-bridge topology, feature
It is, described device includes：
Power obtaining unit, for obtaining target power and predetermined power, and by the target power and the predetermined power
It is compared；
First power control unit for being less than or equal to predetermined power in the target power, then adjusts pwm control signal
Duty ratio makes the currently practical power of the electromagnetic heating apparatus reach the target power.
9. the power control device of electromagnetic heating apparatus as claimed in claim 8, which is characterized in that the pwm control signal
For the two-way pwm signal with dead zone complementation.
10. the power control device of electromagnetic heating apparatus as claimed in claim 9, which is characterized in that described device further includes：
Second power control unit if being more than the predetermined power for the target power, adjusts the pwm control signal
Frequency, the currently practical power of the electromagnetic heating apparatus is made to reach target power.
11. the power control device of electromagnetic heating apparatus as claimed in claim 8, which is characterized in that the first power control
Unit processed is additionally operable to：
When the target power is less than or equal to predetermined power, the frequency of the pwm control signal is adjusted to predeterminated frequency, and
Obtain the currently practical power of the electromagnetic heating apparatus；
If the currently practical power of the electromagnetic heating apparatus is less than the target power, the pwm control signal is improved
Duty ratio；
If the currently practical power of the electromagnetic heating apparatus is more than the target power, reduce the pwm control signal
Duty ratio.
12. the power control device of electromagnetic heating apparatus as claimed in claim 11, which is characterized in that the predeterminated frequency is
18KHz-25KHz。
13. the power control device of electromagnetic heating apparatus as claimed in claim 8, which is characterized in that voltage judging unit is used
In before the target power is compared the power obtaining unit with the predetermined power, judging the half-bridge electromagnetism
The operating voltage of heating unit, and the predetermined power is adjusted according to the operating voltage.
14. the power control device of electromagnetic heating apparatus as claimed in claim 9, which is characterized in that described device further includes：
Pwm control signal setup unit, in a cycle T of the pwm control signal, controlling first via pwm signal
High level is exported within the T1 times, after postponing the t1 times, the second road pwm signal of control exports high level within the T2 times, passes through
Enter next period after the t2 times；
Wherein, T1 and T2 are all higher than upper and lower bridge arm switching tube and open the required time, and t1 and t2 is all higher than controlled switching tube
Dead time, and t1 or t2 is not less than 3 times of the greater in T1 and T2.
15. a kind of electromagnetic heating apparatus, which is characterized in that the electromagnetic heating apparatus includes：
Control unit, the control unit include the power control dress of the electromagnetic heating apparatus as described in claim 8-14 any one
It puts；
The half-bridge topology knot being connected with the control unit moves circuit；And
The induction coil that circuit is connected is moved with the half-bridge topology knot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110716.5A CN108243516B (en) | 2018-02-05 | 2018-02-05 | Power control method and device of electromagnetic heating equipment and electromagnetic heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110716.5A CN108243516B (en) | 2018-02-05 | 2018-02-05 | Power control method and device of electromagnetic heating equipment and electromagnetic heating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108243516A true CN108243516A (en) | 2018-07-03 |
| CN108243516B CN108243516B (en) | 2021-02-26 |
Family
ID=62699810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810110716.5A Active CN108243516B (en) | 2018-02-05 | 2018-02-05 | Power control method and device of electromagnetic heating equipment and electromagnetic heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108243516B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930999A (en) * | 2018-07-08 | 2018-12-04 | 苏州妙文信息科技有限公司 | A kind of shower house intelligent bathroom heater |
| CN108954483A (en) * | 2018-07-08 | 2018-12-07 | 苏州妙文信息科技有限公司 | A kind of intelligent bathroom heater temperature control method |
| CN109121240A (en) * | 2018-09-30 | 2019-01-01 | 珠海格力电器股份有限公司 | Cookware self-adaptive electromagnetic heating system, electromagnetic heater, method for heating and controlling |
| CN110958728A (en) * | 2019-11-14 | 2020-04-03 | 九阳股份有限公司 | Method for controlling power of electromagnetic heating equipment and electromagnetic heating equipment |
| CN111012175A (en) * | 2019-12-04 | 2020-04-17 | 宁波拓邦智能控制有限公司 | Control method and device of wall breaking machine, wall breaking machine and computer readable storage medium |
| CN111385926A (en) * | 2018-12-29 | 2020-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of electromagnetic heating appliance and electromagnetic heating appliance |
| CN112888100A (en) * | 2019-11-29 | 2021-06-01 | 浙江绍兴苏泊尔生活电器有限公司 | Electromagnetic heating control method of half-bridge electromagnetic appliance and half-bridge electromagnetic appliance |
| CN113382492A (en) * | 2021-06-21 | 2021-09-10 | 广东美的厨房电器制造有限公司 | Control method of microwave generating device, cooking device and readable storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647104A (en) * | 2012-04-13 | 2012-08-22 | 美的集团有限公司 | Power control device and control method of half-bridge resonant circuit |
| CN103574707A (en) * | 2012-08-07 | 2014-02-12 | 美的集团股份有限公司 | Multi-burner induction cooker and power control method thereof |
| CN105423513A (en) * | 2015-12-30 | 2016-03-23 | 四川长虹空调有限公司 | Electric heating system with continuously adjustable power and control method of electric heating system |
| CN106211393A (en) * | 2015-04-30 | 2016-12-07 | 佛山市顺德区美的电热电器制造有限公司 | The heating power control method of electromagnetic heating system and device |
| CN106247416A (en) * | 2016-08-10 | 2016-12-21 | 深圳拓邦股份有限公司 | Many kitchen ranges electromagnetic oven and Poewr control method thereof |
| CN106937423A (en) * | 2015-12-31 | 2017-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heater and its laser heating control method |
| CN106993348A (en) * | 2017-05-31 | 2017-07-28 | 青岛大学 | A kind of microwave oven magnetic power control method with pull-up active clamp branch road |
| CN108024404A (en) * | 2016-11-03 | 2018-05-11 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating system and its control method and device |
-
2018
- 2018-02-05 CN CN201810110716.5A patent/CN108243516B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647104A (en) * | 2012-04-13 | 2012-08-22 | 美的集团有限公司 | Power control device and control method of half-bridge resonant circuit |
| CN103574707A (en) * | 2012-08-07 | 2014-02-12 | 美的集团股份有限公司 | Multi-burner induction cooker and power control method thereof |
| CN106211393A (en) * | 2015-04-30 | 2016-12-07 | 佛山市顺德区美的电热电器制造有限公司 | The heating power control method of electromagnetic heating system and device |
| CN105423513A (en) * | 2015-12-30 | 2016-03-23 | 四川长虹空调有限公司 | Electric heating system with continuously adjustable power and control method of electric heating system |
| CN106937423A (en) * | 2015-12-31 | 2017-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heater and its laser heating control method |
| CN106247416A (en) * | 2016-08-10 | 2016-12-21 | 深圳拓邦股份有限公司 | Many kitchen ranges electromagnetic oven and Poewr control method thereof |
| CN108024404A (en) * | 2016-11-03 | 2018-05-11 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating system and its control method and device |
| CN106993348A (en) * | 2017-05-31 | 2017-07-28 | 青岛大学 | A kind of microwave oven magnetic power control method with pull-up active clamp branch road |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930999A (en) * | 2018-07-08 | 2018-12-04 | 苏州妙文信息科技有限公司 | A kind of shower house intelligent bathroom heater |
| CN108954483A (en) * | 2018-07-08 | 2018-12-07 | 苏州妙文信息科技有限公司 | A kind of intelligent bathroom heater temperature control method |
| CN109121240A (en) * | 2018-09-30 | 2019-01-01 | 珠海格力电器股份有限公司 | Cookware self-adaptive electromagnetic heating system, electromagnetic heater, method for heating and controlling |
| CN111385926A (en) * | 2018-12-29 | 2020-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of electromagnetic heating appliance and electromagnetic heating appliance |
| CN111385926B (en) * | 2018-12-29 | 2022-03-22 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of electromagnetic heating appliance and electromagnetic heating appliance |
| CN110958728A (en) * | 2019-11-14 | 2020-04-03 | 九阳股份有限公司 | Method for controlling power of electromagnetic heating equipment and electromagnetic heating equipment |
| CN110958728B (en) * | 2019-11-14 | 2022-02-01 | 九阳股份有限公司 | Method for controlling power of electromagnetic heating equipment and electromagnetic heating equipment |
| CN112888100A (en) * | 2019-11-29 | 2021-06-01 | 浙江绍兴苏泊尔生活电器有限公司 | Electromagnetic heating control method of half-bridge electromagnetic appliance and half-bridge electromagnetic appliance |
| CN111012175A (en) * | 2019-12-04 | 2020-04-17 | 宁波拓邦智能控制有限公司 | Control method and device of wall breaking machine, wall breaking machine and computer readable storage medium |
| CN113382492A (en) * | 2021-06-21 | 2021-09-10 | 广东美的厨房电器制造有限公司 | Control method of microwave generating device, cooking device and readable storage medium |
| CN113382492B (en) * | 2021-06-21 | 2024-01-23 | 广东美的厨房电器制造有限公司 | Control method of microwave generating device, cooking device and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108243516B (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108243516A (en) | A kind of Poewr control method of electromagnetic heating apparatus, device and electromagnetic heating apparatus | |
| CN106160534B (en) | The electromagnetic heater and its method for heating and controlling of cooking apparatus, cooking apparatus | |
| WO2019119641A1 (en) | Electromagnetic cookware and power control method therefor | |
| CN104284465A (en) | Intelligent control method of convection heating of multiple electromagnetic heating units and electromagnetic heating device | |
| CN203447082U (en) | Electric pressure cooker and control device thereof | |
| CN106136843A (en) | Cooking apparatus and the electric heater unit for cooking apparatus | |
| CN205430655U (en) | Hybrid heating control circuit and electromagnetic heating equipment | |
| CN106162970B (en) | Electromagnetic heating device and electromagnetic oven with same | |
| JP2015111594A (en) | Induction heating cooker and program thereof | |
| CN204539509U (en) | Cooking apparatus and the electromagnetic heater for cooking apparatus | |
| CN108377587B (en) | Power control method and device and electromagnetic heating equipment | |
| CN108261095B (en) | Heating control method and device and electric heating equipment | |
| CN204520276U (en) | Cooking apparatus and the electric heater unit for cooking apparatus | |
| CN101737820A (en) | Energy and electricity saving microwave oven | |
| CN114062908B (en) | Relay state detection method, device and equipment of electromagnetic heating appliance | |
| CN108302573A (en) | Electromagnetic oven control device, electromagnetic oven and control method applied to control device | |
| JP4102258B2 (en) | Induction heating cooker | |
| CN108980918B (en) | A kind of firepower adjusting method with Freehandhand-drawing heating power curve frequency-conversion microwave oven | |
| CN104981038B (en) | The control method and device of frequency converter in micro-wave oven | |
| KR101904652B1 (en) | smart electric range | |
| CN204520277U (en) | Cooking apparatus and the electric heater unit for cooking apparatus | |
| Prist et al. | Modelling and hardware-in-the-loop simulation for energy management in induction cooktops | |
| CN205726492U (en) | A kind of Electromagnetic Heating soft start structure | |
| CN210670622U (en) | Low-power heating circuit and cooking utensil | |
| JP4660992B2 (en) | Induction heating cooker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |