EP2445306B1 - Procédé de commande en fonctionnement d'une table de cuisson à induction et table de cuisson à induction utilisant ce procédé - Google Patents

Procédé de commande en fonctionnement d'une table de cuisson à induction et table de cuisson à induction utilisant ce procédé Download PDF

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Publication number
EP2445306B1
EP2445306B1 EP11186267.8A EP11186267A EP2445306B1 EP 2445306 B1 EP2445306 B1 EP 2445306B1 EP 11186267 A EP11186267 A EP 11186267A EP 2445306 B1 EP2445306 B1 EP 2445306B1
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Prior art keywords
inverter device
control
inverter
voltage
signal
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EP11186267.8A
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German (de)
English (en)
French (fr)
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EP2445306A3 (fr
EP2445306A2 (fr
Inventor
Etienne Alirol
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Groupe Brandt SAS
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Groupe Brandt SAS
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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
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like

Definitions

  • the present invention relates to a control method in operation of an induction hob.
  • an induction hob comprising at least one inductor in a hob, said induction hob being adapted to implement the control method in operation according to the invention.
  • the invention relates to the modification of the inverter device control supplying an inductor in an induction hob.
  • An induction hob is powered by an alternating voltage which is generally that of the electrical distribution network and comprises at least one cooking zone in the hob. Each cooking zone is composed of at least one inductor.
  • each inductor is powered by an inverter device.
  • the inverter devices are themselves powered by a rectified and filtered voltage obtained from the AC voltage supplying the induction hob.
  • An inverter device notably uses a semiconductor power switch, for example of the power transistor type.
  • Each inverter device can be made according to different topologies. Regarding the induction hobs, it is often either a half-bridge topology, implementing two power switches, or a quasi-resonant topology, implementing a single power switch . It may also be, without this list being exhaustive, a complete bridge topology using four power switches.
  • the control of the inverter device is periodically modified to regulate the power restored in the container.
  • This power variation method is based on the agreement of the resonant system constituted by the inductor, the container and a resonance capacitor, the restored power decreasing when the switching frequency moves away from the resonance frequency of the resonant system.
  • inverter devices made with a half-bridge topology it is also possible to modulate the power delivered to each container by varying the duty cycle of the power switch control signal while maintaining the frequency of the control signal of the power switches. power switches.
  • the modification of the control of the inverter device may consist of stopping periodically and for a determined duration the control signal of the power switch (s) of the inverter device.
  • modification of the control of the inverter means indifferently the start, the change of the frequency or the duty cycle, or the stopping of the control signal (s) of the inverter device.
  • EP 2 209 197 which describes a method for controlling resonant power converters based on the ZVS (Zero Voltage Switching) technique.
  • This technique consists in that the switching of the power transistors occur when the voltage across the transistors is zero.
  • the method comprises a step of evaluating the occurrence of switching of non-zero voltage power transistors. In the case where such switching occurs, the method adjusts the control of the converter so as to return to an operation where the switches are at zero voltage.
  • EP 0 986 287 A2 which relates to a two-output converter consisting of a three-phase H-bridge comprising power semiconductors which are controlled by a control circuit for regulating the power supplied to the outputs and which also comprises two switches whose activation modifies the topology to supply one of the charges or both charges simultaneously.
  • the control circuit of the invention comprises a zero voltage detector of the mains voltage so that any change in the pulse width of the power semiconductors is synchronized with the zero crossing of the voltage, so as to preserve the voltage. operation of power semiconductors.
  • control means of the induction hob creates a square signal synchronized with the zero crossings of the AC voltage supplying the induction hob.
  • the periodic changes in the control of the inverter device are made at fixed times with respect to the periodic edges of this square signal.
  • the present invention aims to solve the aforementioned drawback and to provide a control method in operation of an induction hob for changing the power delivered to each container disposed on the induction hob, whatever the topology of the inverter devices supplying each inductor, and optimized to avoid the appearance of noise during periodic changes in the controls of the inverter devices.
  • the present invention relates to a control method in operation of an induction hob comprising at least one inverter device, each inverter device supplying at least one inductor in a cooking plane of said hob to induction, said induction hob comprising at least one control means, each control means being adapted to control at least one of said inverter devices, said induction hob being powered by an alternating voltage and having at least one system power supply producing a rectified voltage and filtered from said AC voltage, each supply system feeding at least one of said inverter devices.
  • the rectified and filtered voltage that supplies this type of inverter device is not continuous when the inverter device delivers current in its load constituted by an inductor.
  • the rectified and filtered supply voltage of the inverter device has periodic minima whose period is identical to the period of the AC voltage from which it is derived.
  • the minimums of this rectified and filtered supply voltage of the inverter device are out of phase with the zero crossings of the AC voltage from which it is derived.
  • said at least one means for controlling said at least one inverter device receives a signal synchronized with the zero crossing of said alternating voltage. And said modification of the control of said at least one inverter device occurs with a predetermined delay with respect to said signal synchronized with the zero crossing of the AC voltage.
  • said at least one means for controlling said at least one inverter device to modify the control of said at least one inverter device at times corresponding to the minimums of the rectified and filtered supply voltage of said at least one inverter device.
  • said at least one means for controlling said at least one inverter device comprises a device for measuring the instantaneous value of said rectified and filtered supply voltage of said at least one inverter device.
  • Said at least one means for controlling said at least one inverter device thus has precise knowledge, in real time, of the voltage level which supplies said at least one inverter device.
  • the minimum value taken by said rectified and filtered supply voltage of said at least one inverter device during a half-period or a period of the signal synchronized with the zero crossing alternating voltage is determined regularly.
  • the present invention also relates, according to a second aspect, to an induction hob comprising at least one inverter device, each inverter device supplying at least one inductor in a cooking surface of said induction hob, said hob to induction device comprising at least one control means, each control means being able to control at least one of said inverter devices, said induction hob being powered by an alternating voltage and comprising at least one supply system producing a rectified voltage and filtered from said AC voltage, each supply system feeding at least one of said inverter devices, said at least one control means being adapted to implement the operating control method according to the invention.
  • This induction hob has characteristics and advantages similar to those described above in relation to the operating control method according to the invention.
  • the cooking zones of an induction hob can be materialized by a screen printing of the hob vis-à-vis of which is an inductor 5.
  • a hob commonly comprises one to four or even five cooking zones predefined in a hob usually extending to a width of about 30cm, 60cm or 90cm and a depth of about 51 cm.
  • the inductors 5 are generally of circular shape and the diameter of each inductor 5 is generally between 140 millimeters and 300 millimeters.
  • a container whose contents must be heated is placed on the hob at the screen of the cooking zone.
  • Some induction hobs do not have predefined cooking zones and therefore do not include screen printing predefining such or such cooking area.
  • Each zone or cooking zone being determined on a case-by-case basis as a function of the position of a container placed opposite a subset of inductors 5.
  • Induction cooking usually helps to determine and to activate up to five cooking zones simultaneously to heat five containers on the hob.
  • inductors 5 of these induction hobs are generally circular in shape and the diameter of each inductor 5 may be of the order of 80 millimeters. These induction hobs may for example comprise about 35 inductors 5.
  • the inductors 5 could be of different shape, they can for example be made by rectangular or triangular windings.
  • the induction hob comprises means for interfacing with the user and means for supplying and controlling at least one inductor 5.
  • the means for interfacing with the user comprise, on the one hand, display means and, on the other hand, selection means. They are located under the hob outside the cooking zones and so that the display means are visible to the user and the selection means are accessible to the user.
  • the display means make it possible, for example, to indicate the operating state of the induction hob, such as, for example, the heating power level of the cooking zones, any faults that have occurred, and the activated functions. They may be, by way of non-limiting examples, LED indicators, digital displays of the seven-segment type, liquid crystal displays.
  • the selection means may be, by way of non-limiting examples, knurls, keys, adjustment zones sensitive to the sliding of the finger. For reasons of ease of cleaning we often find sensitive keys on induction hobs.
  • the supply and control means for at least one inductor 5 essentially comprise at least one inverter device 7, a power supply system 6 and a means for controlling the at least one inverter device 7.
  • These supply means and control of at least one inductor 5 include power electronics and also low voltage electronics, low power control.
  • the interface means with the user and the power supply and control means of at least one inductor 5 can be implanted on the same electronic card or, in the most frequent case, on separate electronic cards.
  • the separation of the electronic cards makes it possible to optimize the design and the ergonomics by placing the interface means with the user at the most appropriate place for the user.
  • the separation of the cards also makes it possible to reduce the overall bulk of the induction hob by placing the supply and control means of at least one inductor 5 in the spaces remaining free.
  • an induction hob may use more than one electronic card comprising interface means with the user and / or more than one electronic card comprising the means for supply and control of at least one inductor 5.
  • This figure is a block diagram which, for the sake of simplification, does not represent all the components of an inverter device 7 but only those necessary for the explanation of the invention.
  • the induction hob is powered by the AC voltage V1, which in this example is single-phase.
  • the AC voltage V1 is received by the power supply system 6 which rectifies it by means of the four diodes 1, and then filters it to form the supply voltage V2 of the inverter device 7.
  • the filtering capacitors of the power supply system 6 are not represented.
  • Filtering in this type of inverter device 7 is not intended to create a continuous supply bus. Its role is to limit the generation of electromagnetic disturbances to contain their level within the regulatory templates.
  • the inverter device 7 comprises the two power switches 2 and the capacitors 3, it supplies the inductor 5.
  • the two power switches 2 of this half-bridge topology are connected in series. This series connection is powered by the voltage V2 and the common point of this series connection supplies the inductor 5. The other end of the inductor 5 is connected to the common point of the two capacitors 3 connected in series. The series connection of these two capacitors 3 is powered by the voltage V2.
  • a not shown control means of the inverter device 7 generates the two control signals 4 of the inverter device 7 which drive the power switches 2.
  • the power switches 2 are IGBT transistors (acronym for the English term). Insulated Gate Bipolar Transistor ', in French' bipolar transistor insulated gate ').
  • the induction hob is powered by the AC voltage V1, which in this example is single-phase.
  • the feed system 6 is identical to that of the figure 1 .
  • the inverter device 7 comprises a power switch 2 and a capacitor 3, it supplies the inductor 5.
  • the capacitor 3 is connected in parallel with the inductor 5.
  • This parallel assembly is itself connected in series with the power switch 2. The assembly is powered by the voltage V2.
  • a not shown control means of the inverter device 7 generates the control signal 4 of the inverter device 7 which controls the power switch 2.
  • the power switch 2 is an IGBT transistor.
  • V1 of the induction hob usually comes from the electrical distribution network.
  • V1 is a single-phase nominal RMS voltage between 220V and 240V with a nominal frequency of 50Hz or 60Hz.
  • each cooking zone having at least one inductor 5
  • a single power supply system 6 receiving the voltage V1
  • the voltage V2 produced by the single power supply system 6 supplies each inverter device 7, and the single control means independently controls each inverter device 7.
  • Each inverter device 7 can supply a single inductor 5, or each inverter device 7 can supply several inductors 5 successively and periodically for example by means of a relay device.
  • the supply voltage of the induction hob can be three-phase with neutral conductor. It is then possible to use three power supply and control means each supplying at least one inductor 5. Each of the three power supply and control means being fed between one of the three phases and the neutral. Again, the power supply system 6 of each of the three power supply and control means of at least one inductor 5 can feed several inverter devices 7 which in turn can feed an inductor 5 or several inductors 5 successively and periodically.
  • the induction hob can operate on a three-phase network with neutral conductor whose current limit is set at 16 amperes per phase, or even on a single-phase network whose current limit is fixed at 16 amperes or well 32 amperes.
  • Such a hob is thus capable of delivering a high total power, corresponding to the power delivered by the three phases, each delivering 16 amps at a voltage of 230 volts, or about 11040 watts.
  • Each inverter device 7 is controlled by a switching frequency of at least one signal 4, here adjustable, which makes it possible to modify the instantaneous power restored in a receptacle at least partially covering the inductor 5 thus fed.
  • the modification of the control of the inverter devices 7 may occur for example at each period of the supply voltage of the induction hob.
  • the modification of the control of the inverter devices 7 may consist, in addition to modifying the frequency of at least one signal 4, to periodically stop the operation of said at least one inverter device 7, for example by interrupting the generation of said at least one signal 4 of said at least one inverter device 7.
  • Stopping the operation of an inverter device 7 causes the stop of the operation of said at least one inductor 5 that it powers.
  • the switching frequency of said at least one control signal 4 of said at least one inverter device 7 generally ranges from about 10 kHz to about 100 kHz.
  • the minimum and maximum frequencies depend inter alia on the electrical characteristics of the power switches 2 and the inductors 5.
  • the figure 6 represents the signal V3 synchronized with the zero crossings of the AC supply voltage V1 of the hob to induction. It also represents on the curve f, the supply voltage V2 of the inverter device 7 at the moment of a modification of the control of the inverter device 7.
  • the modification of the control of the inverter device 7 consists in this example in a modification of the frequency of the control signal 4 of the inverter device 7. Taking into account the frequencies (for example 50 Hz for the signal V3 and the alternating voltage V1 whose voltage V2 is output and 10 kHz at 100 kHz for the signal 4), the signal 4 has a period approximately 200 to 2000 times shorter than the period of the signal V3 and the AC voltage V1 whose voltage V2 is derived.
  • the scale between the periods of the signals V3 and V2 on the one hand and of the signal 4 on the other hand has not been respected. The representation is chosen so that it clearly shows the moment of the change of frequency of the signal 4.
  • Each inductor 5 of the hob is independent and can operate at a switching frequency (or switching period) distinct from the switching frequencies of the other inductors 5.
  • Said at least one control means uses in particular physical measurement data, such as measurement data of the supply voltage V2 of said at least one inverter device 7 in order to adjust the control of said at least one inverter device 7
  • Said at least one control means also uses the signal V3 synchronized with the zero crossings of the AC supply voltage V1 of the induction hob.
  • the AC supply voltage V1 of the induction hob is used to generate a signal V3 synchronized with the periodic zero crossings of the voltage V1.
  • the signal V3 is a square signal whose voltage level is adapted to the use by a processing unit of said at least one control means of said at least one inverter device 7.
  • This processing unit can be for example a microcontroller.
  • This signal V3 has a high logic level during a half-wave of the voltage V1 and a low logic level during the next half-wave of the voltage V1.
  • the edges of this signal V3 are used to clock certain operations performed by the processing unit of the at least one control means of the at least one inverter device 7.
  • the invention relates to a control method in operation of an induction hob comprising at least one inverter device 7, each inverter device 7 supplying at least one inductor 5 in a cooking surface of said induction hob.
  • said induction hob comprising at least one control means, each control means being adapted to control at least one of said inverter devices 7, said hob being powered by an alternating voltage V1 and having at least one supply system 6 producing a rectified and filtered voltage V2 from said alternating voltage V1, each supply system 6 supplying at least one of said inverter devices 7.
  • the figure 4 represents the rectified voltage and filtered supply V2 of the inverter device 7 in three different operating conditions of said induction hob powered by an alternating voltage V1. In the three temporal representations of V2, the periodic minima of said rectified and filtered voltage V2 for supplying the inverter device 7 are observed.
  • Said at least one means for controlling said at least one inverter device 7 receives a signal V3 synchronized with the zero crossing of said alternating voltage V1. Said modification of the command of said at least one inverter device 7 occurs with a predetermined delay with respect to said signal V3 synchronized with the zero crossing of the alternating voltage V1.
  • the figure 4 represents temporally more than one period of the signal V3 synchronized with the periodic zero crossings of the voltage V1.
  • the figure 4 also represents, in the same time axis, said voltage V2 in three different operating conditions of said induction hob.
  • the periodic minima of said rectified and filtered voltage supply V2 of the inverter device 7 are observed.
  • the minima of V2 are spaced by the same duration as the time separating two successive fronts of the signal V3 synchronized with the periodic zero crossings of the voltage V1.
  • the modification of the control of said inverter device 7 by a control means of the inverter device 7 during the periodic minima of said rectified and filtered voltage supply V2 of the inverter device 7 can be carried out after each signal front V3 synchronized with the periodic zero crossings of the voltage V1.
  • the modification of the control of said inverter device 7 by a control means of the inverter device 7 occurs at most one edge out of two. That is, said modification occurs at most, either after each rising edge or after each falling edge of said signal V3, but not after each edge of said signal V3.
  • said predetermined time of modification of the control of said at least one inverter device 7 depends on the number of inverter devices 7 in operation.
  • control means can control several inverter devices 7 fed by the same power system.
  • the processing unit of said control means is aware of the number of inductors 5 in operation, and it has in memory the complete list of delays to be applied with respect to the synchronization signal V3 for the modification of the commands of the inverter devices 7 qu she controls.
  • This list of said delays to be applied for the modification of the control of the inverter devices 7 is organized according to the number of inverter devices 7 in operation.
  • t1 is used at startup of an inverter device 7 while no inverter device 7 is in operation.
  • t1 is also used when changing the control of an inverter device 7 when a single inverter device 7 is in operation.
  • t2 is used when changing the control of the inverter devices 7 when two inverter devices 7 are in operation.
  • t3 is used when changing the control of the inverter devices 7 when three inverter devices 7 are in operation.
  • the offset between the edges of the signal V3 synchronized with the periodic zero crossings of the voltage V1 and the minima of the rectified voltage and filtered supply V2 of the inverter device 7 is variable. It depends in particular on the number of inductors 5 in operation and the power supplied to each inductor 5. A power given by inductor 5, the delay to be applied between a front of the signal V3 and the modification 10 of the control of the inverter devices 7 is predetermined according to the number of operating inductors 5 which are powered by the same power supply system 6.
  • said predetermined time for changing the control of said at least one inverter device 7 depends on the power delivered by said power supply system 6.
  • the processing unit of said control means determines the power delivered by said power supply system by measuring, for example, the current delivered by said power supply system and the voltage supplied by said power supply system and by calculating the power on said power supply system. the basis of measured values of current and voltage.
  • the processing unit of said control means selects said predetermined time for changing the control of said at least one inverter device 7 using for example a predetermined and stored value pair table. associating a power value with a predetermined delay value for modifying the control of said at least one inverter device 7.
  • the power delivered by said feed system can be determined by other means, for example and by way of non-limiting examples based on the power setpoint selected by the user for each of the cooking zones supplied by said power supply system or even based on the switching frequency of the inverter devices.
  • said predetermined time of change of control of said at least one inverter device 7 is a decreasing function of the number of inverter devices 7 in operation .
  • said predetermined time for changing the control of said at least one inverter device 7 is constant from three inverter devices.
  • the processing unit of said control means has in memory a list of three delays whose values are decreasing.
  • the second plus A large delay value will be used by the processing unit to apply the change in the commands of the inverter devices 7 in operation.
  • the third largest delay value will be used by the processing unit to apply the modification of the commands of inverter devices 7 to operation.
  • the offset between the edges of the signal V3 synchronized with the periodic zero crossings of the voltage V1 and the minima of the rectified voltage and filtered V2 supply of the inverter device 7 depends in particular on the number of inductors 5 in operation. At power given by inductor 5, the more inductors in operation, which are powered by inverter devices 7 sharing the same power system 6, the more said offset decreases.
  • Said offset is constant from a number of inverter devices 7 in operation.
  • said offset is constant from three inverter devices 7 in operation.
  • the number of inverter devices 7 in operation from which said offset is constant can be different without departing from the scope of the invention. the invention.
  • the processing unit of said control means stores in memory a complete list of the delays to be applied with respect to the synchronization signal V3 for modifying the commands of the inverter devices 7 which it controls.
  • the number of said delays to be applied for the modification of the control of the inverter devices 7 contained in this list may be equal to the number of inverter devices 7 in operation from which said offset is constant.
  • said at least one means for controlling said at least one inverter device 7 comprises a device for measuring the instantaneous value of said rectified and filtered voltage supply V2 of said at least one inverter device.
  • the processing unit of said control means of the inverter device 7 is able to know in real time the supply voltage level V2 of the inverter device 7.
  • the minimum value taken by said rectified and filtered supply voltage V2 of said at least one inverter device 7 during a half period or a period of the signal V3 synchronized with the zero crossing of the AC voltage. V1 is determined regularly.
  • the rectified and filtered supply voltage V2 of the inverter device 7 is represented on two curves d and e of the figure 5 in two different operating conditions of said induction hob powered by an alternating voltage V1.
  • the minimum value of said rectified and filtered supply voltage V2 of said at least one inverter device 7 is determined during the half-period or the period of the signal V3 synchronized with the passage by zero of the voltage alternative V1 preceding the modification of the command of the at least one inverter device 7.
  • the change in control of said at least one inverter device occurs at a time when the minimum value of the rectified and filtered voltage V2 is known.
  • a control means and several inverter devices 7 at least two of which are in operation to supply each at least one inductor 5 has the effect of resynchronizing all the controls of the inverter devices 7 in operation which are powered by the same power supply system 6. This allows a better operating stability of the inverter devices 7 while avoiding the generation of noise when changing the controls.
  • Said predetermined threshold S1 for comparing with said minimum value of the rectified voltage and filtered supply V2 of said at least one inverter device 7 is between 30V and 40V, and is preferably 35V.
  • control means of said at least one inverter device 7 determines the instant at which it applies the modification of the control of said at least one inverter device 7 not on the basis of a predetermined delay. but using the information of the device for measuring the instantaneous value of the rectified and filtered voltage supply V2 of the at least one inverter device 7.
  • control means detects in real time the periodic minimum of the rectified voltage and filtered V2 supply of said at least one inverter device 7.
  • the control means of said at least one device to Inverter 7 modifies the control of the at least one inverter device 7.
  • a variant of this embodiment provides that during a half-period, respectively a period, of the signal V3 synchronized with the zero crossing of the alternating voltage V1, the time which separates the beginning of said half-wave. period, respectively of said period, of the moment when the rectified voltage and filtered supply V2 of said at least one inverter device 7 takes its minimum value is determined and stored, and in that the modification of said control at least one inverter device 7 is applied at the end of said determined duration and stored after the start of a half-period, respectively of a following period of the signal V3 synchronized with the zero crossing of the alternating voltage V1.
  • the means for controlling said at least one inverter device 7 uses the device for measuring the instantaneous value of the rectified and filtered voltage supply V2 of said at least one inverter device 7 to take successive measurements of said voltage V2. so as to determine the instant at which the rectified and filtered voltage V2 takes its minimum value.
  • the time of application of the modification of the control of said at least one inverter device 7 is determined with respect to the current operating conditions of said induction hob.
  • the instant of application of the modification of the control of said at least one inverter device 7 varies according to the number of inverter devices 7 supplied by the same power supply system 6 at this time. moment and according to the power delivered by said power supply system 6.
  • the determination of the instant when the rectified voltage and filtered supply V2 of said at least one inverter device 7 takes its minimum value can be achieved during the first half-period of the signal V3 synchronized with the passage through zero of the AC voltage V1 and the modification of the control of said at least one inverter device 7 can be performed during the second half-period of the signal V3 synchronized with the zero crossing of the AC voltage V1.
  • they can be performed every two periods of the signal V3 synchronized with the zero crossing of the AC voltage V1.
  • the determination of the moment when the rectified and filtered supply voltage V2 of said at least one inverter device 7 takes its minimum value can be achieved during a first period of the signal V3 synchronized with the zero crossing.
  • the modification of the control of said at least one inverter device 7 can be performed during the next period of the signal V3 synchronized with the zero crossing of the AC voltage V1.
  • the repetition period of these operations depends in particular on the needs of the power control.
  • the rehearsal period must be short enough to guarantee sufficiently powerful power control.
  • the present invention also relates, according to a second aspect, to an induction hob comprising at least one inverter device 7, each inverter device 7 supplying at least one inductor 5 in a hob of said induction hob, said hob induction cooker comprising at least one control means, each control means being adapted to control at least one of said inverter devices 7, said induction cooktop being powered by an alternating voltage V1 and having at least one control system.
  • supply 6 producing a rectified and filtered voltage V2 from said alternating voltage V1, each supply system 6 supplying at least one of said inverter devices 7.
  • Said at least one control means is adapted to implement the control method in operation according to the invention.
  • the present invention is not limited in the number of inductors in the hob of the induction hob.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inverter Devices (AREA)
  • General Induction Heating (AREA)
EP11186267.8A 2010-10-21 2011-10-21 Procédé de commande en fonctionnement d'une table de cuisson à induction et table de cuisson à induction utilisant ce procédé Active EP2445306B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1004134A FR2966688B1 (fr) 2010-10-21 2010-10-21 Procede de commande en fonctionnement d'une table de cuisson a induction et table de cuisson a induction utilisant ce procede.

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EP2445306A2 EP2445306A2 (fr) 2012-04-25
EP2445306A3 EP2445306A3 (fr) 2012-12-26
EP2445306B1 true EP2445306B1 (fr) 2017-12-13

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ES (1) ES2661556T3 (es)
FR (1) FR2966688B1 (es)

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FR3000361B1 (fr) * 2012-12-20 2014-12-26 Fagorbrandt Sas Procede et disposiif d'alimentation en puissance des moyens d'induction
CN107155230B (zh) * 2016-03-02 2020-09-01 佛山市顺德区美的电热电器制造有限公司 电磁加热烹饪装置及其加热控制电路和低功率加热控制方法
CN107734729B (zh) * 2017-10-18 2024-01-30 广东格兰仕集团有限公司 带双ih加热功能的电路
EP4002955B1 (en) * 2020-11-13 2023-09-06 Electrolux Appliances Aktiebolag Induction heating unit, induction cooking device, and method for operating an induction heating unit
DE102021201220A1 (de) * 2021-02-09 2022-08-11 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betreiben einer Vorrichtung zum drahtlosen Übertragen von Energie in Richtung eines elektrischen Verbrauchers mittels induktiver Kopplung, Vorrichtung und System

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EP1951003B2 (en) * 2007-01-23 2022-11-16 Whirlpool Corporation Control method for induction cooking hob and induction cooking hob adapted to carry out such method
EP2209197A1 (en) * 2009-01-16 2010-07-21 Whirpool Corporation Method for controlling resonant power converters in induction heating systems, and induction heating system for carrying out such method

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Also Published As

Publication number Publication date
EP2445306A3 (fr) 2012-12-26
EP2445306A2 (fr) 2012-04-25
FR2966688B1 (fr) 2015-11-20
ES2661556T3 (es) 2018-04-02
FR2966688A1 (fr) 2012-04-27

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