EP3422815A1 - Induction cooking device and method for controlling same - Google Patents
Induction cooking device and method for controlling same Download PDFInfo
- Publication number
- EP3422815A1 EP3422815A1 EP18180281.0A EP18180281A EP3422815A1 EP 3422815 A1 EP3422815 A1 EP 3422815A1 EP 18180281 A EP18180281 A EP 18180281A EP 3422815 A1 EP3422815 A1 EP 3422815A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- induction
- column
- row
- columns
- 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
- 230000006698 induction Effects 0.000 title claims abstract description 131
- 238000010411 cooking Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims description 13
- 239000003990 capacitor Substances 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 2
- 230000003534 oscillatory effect Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000004422 calculation algorithm Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
-
- 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
-
- 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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
-
- 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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/05—Heating plates with pan detection means
Definitions
- the invention relates to an induction cooking apparatus having a plurality of row lines, a plurality of column lines, a plurality of resonant circuit elements having a respective first pole and a respective second pole, a plurality of grid diodes and an inverter.
- Each resonant circuit element is connected with its first pole to exactly one of the row lines.
- Each resonant circuit element is connected to its second pole with exactly one of the column lines.
- Each column line has a respective end-side column switch.
- the invention likewise relates to a method for controlling such an induction cooking device.
- Such induction cooking devices are known from the prior art and are used in particular for realizing a true surface cooking.
- the resonant circuit elements on induction heating coils which can be used to heat pots standing on a hob.
- Exemplary embodiments are in EP 1 303 168 A1 such as EP 2 380 400 B shown.
- the most widely used power electronic circuits for inductive heating of an induction hob are the resonant (series) resonant circuit and the quasi-resonant parallel resonant circuit.
- the latter has the advantage that a switching element and a capacitor are required less than with the series resonant circuit.
- each individual coil is driven in the case of quasi-resonant design by a semiconductor transistor or in the case of the embodiment as a series resonant circuit by two semiconductor transistors, usually IGBTs.
- IGBTs semiconductor transistors
- FIG Fig. 1 An exemplary implementation of a prior art induction cooking apparatus is shown in FIG Fig. 1 shown.
- induction coils of the induction heating device are driven in series resonant circuits by means of half-bridge transistors.
- a respective resonant circuit has a respective inductor coil L and a respective capacitance or capacitor C.
- six series resonant circuits are shown, which are arranged in a matrix of rows and columns.
- the half-bridge consists of switches S highside and S lowside , which can be realized in particular by means of IGBT transistors or by means of MOSFETs. It is used to generate a high-frequency alternating voltage in the range of 20 kHz to 150 kHz, as is customary for the electrical excitation of an inductive heating by means of induction coils.
- U is a rectified from the mains voltage, pulsating DC voltage source, possibly it may also be a pure DC voltage, which is generated by a PFC (Power Factor Correction) circuit.
- Cs is a DC link capacitor, which stabilizes the DC link voltage of the half bridges with resonant circuits.
- Each row (Sx1a-Sx4a) or column (Sy1-Sy4) has a switch (IGBT transistors or MOSFET transistors).
- the semiconductors for switching the rows and columns are in contrast to the inverter switches (S highside , S lowside ) for generating the high frequency slowly switching and thus need not be executed high quality, alternatively, a low forward voltage Vce (sat) in IGBTs and / or a low on-resistance RDS (on) should be considered for MOSFETs.
- driver block For each transistor, a driver block is required for control, also for the inverter.
- high-side drivers such as pulse transformer (galvanic isolation possible) or charge pumps (without galvanic isolation) in question, this applies to all return and for the S highside .
- the time course of the currents through the induction coils is shown when the induction coils L11 and L22, etc. are to be electrically excited at the time windows T11 and T22, respectively.
- the time window T11 for the induction coil L11 of the desired current flow is shown thick, for the other induction coil L, the interference is shown thin.
- the desired current flow is shown thick for the induction coil L22, and the disturbances for the other induction coils L are again shown as thin. This applies to the case where a pot is placed on the induction coils L11 and L22. Because of this, current flows are only effected in their time windows T11 and T22.
- the invention relates to an induction cooking device.
- This has a plurality of row lines and a plurality of column lines. It has a plurality of resonant circuit elements with a respective first pole and a respective second pole. In addition, it has a plurality of grid diodes and an inverter. Each resonant circuit element is connected with its first pole to exactly one of the row lines. Each resonant circuit element is connected to its second pole with exactly one of the column lines.
- Each column line has a respective end-side column switch.
- each row line has a first line line end and a second line line end, between which the respective first poles of the connected resonant circuit elements are connected.
- the first and second row line ends are each connected to the inverter, wherein at least one of the row line ends, a respective line switch is arranged.
- Respective first poles of the resonant circuit elements are connected to a respective grid diode, which is connected to the respective second row line end with forward direction to the second Zeilen effet nie, so that at most a respective first pole is connected directly to the second row line end of the connected to a row line first poles.
- the term grating diodes is not a special type of diode, but that basically all known types of diodes can be used. Low-loss diodes or Schottky diodes are preferred.
- the designation of the grid diodes is chosen to make it clear that these are within a grid of row and column lines.
- the resonant circuit elements are a respective capacitor and a respective coil in series. This may in particular mean that each resonant circuit element represents a resonant circuit per se.
- the resonant circuit elements are a respective coil, wherein a capacitor is further connected in each column line, which forms series resonant circuits with the respective connected coils.
- a resonant circuit typically can not already be formed by the respective resonant circuit elements per se, but rather arises only in conjunction with the respective capacitor. As a result, the number of capacitors required in total can be significantly reduced.
- the resonant circuit elements are a respective coil, wherein further two capacitors are connected to each column line, which form series resonant circuits with the respective connected coils.
- the respective column line with the column switch is connected between the capacitors.
- the column switches can in particular be bidirectionally conductive.
- the coils are induction coils. These can be used advantageously for heating cookware designed for this purpose and are then induction heating coils.
- the induction coils or other resonant circuit elements may preferably be identical to one another. This may in particular mean that all similar resonant circuit elements used in the induction cooking device are identical to each other.
- the resonant circuit elements are preferably arranged in rows and columns, in particular in the form of a matrix. This leads to a clear design, which allows, for example, a uniform distribution of resonant circuit elements via a cooking surface to be heated.
- a first line switch is arranged on each first line end of the line, and a second line switch is arranged on each second line line end.
- the first line switch and the second line switch of each row line are preferably configured to be switched simultaneously.
- a line switch is arranged on each first row line end and on each second line line end a respective line diode is arranged in the forward direction away from the line switch. Even with such an embodiment, the operation of the resonant circuits is ensured even when using the grid diodes.
- the aforementioned line diode is in this case a component which is typically more favorable in comparison to row switches, which component also does not need to be controlled.
- the poles connected to a row line only one pole, which is connected closest to the second row line end, is directly connected to the second row line end.
- the switches are designed as self-locking N-channel MOSFETs. This has proven to be advantageous in practice. This may relate to all switches or even only a part of the switches, for example, line switches and / or column switches.
- the column switches preferably have a respective freewheeling diode. Thus, any parasitic currents can be derived.
- the line switches form an inverter according to an embodiment of the invention.
- additional switching elements for forming the inverter can be saved.
- the grid diodes are connected according to an embodiment between two first poles. Thus they can advantageously exert the desired effect to suppress unwanted leakage currents.
- each first pole is connected by means of a respective grid diode to the first row line end and connected by means of a respective further grid diode to the second row line end.
- Each grid diode is interconnected with the forward direction to the second end of the line line.
- the induction cooking device further comprises a cup detection, which is designed to switch the line switches and column switches so that only resonant circuit elements are excited under a detected pot by the inverter.
- a cup detection which is designed to switch the line switches and column switches so that only resonant circuit elements are excited under a detected pot by the inverter. This allows optimal use and a saving of energy, since only the required resonant circuit elements are actually controlled.
- the resonant circuit elements are preferably induction coils or induction heating coils or have such, which are arranged in rows and columns next to each other and behind each other. They are thus distributed in a corresponding configuration on a hob, wherein advantageously the columns means the arrangement one behind the other.
- the lines are the arrangement of induction coils side by side.
- the induction coils are arranged in at least four rows and three columns, ie in a field with three induction coils in a row and four induction coils side by side. This has been proven for typical applications because sufficient variability in pot sizes and positions used is achieved without using excessive numbers of components.
- the Fig. 1 shows an induction cooking apparatus according to the prior art, which has already been described in the introduction of this application.
- the Fig. 2 shows currents through the induction coils of the induction cooking of Fig. 1 , which have already been described.
- Fig. 3 shows an induction cooking apparatus according to a first embodiment of the invention, which is in particular an induction hob.
- six resonant circuit elements are shown, which are each formed of an induction coil L and a respective capacitor C.
- the induction coils L are induction heating coils.
- the resonant circuit elements are arranged in a matrix form, with the inductors L and the capacitors C being respectively indicated with two letters. The first letter indicates the line, with the second letter indicating the column.
- two line switches Sx1a, Sx1b of the first line and two further line switches Sx2a, 2x2b of the second line are arranged. Between these are respective row lines to which respective first poles of the resonant circuit elements are connected. Respective second poles facing the first poles, on the other hand, are connected to column switches Sy1, Sy2 and Sy3, each column switch Sy1, Sy2, Sy3 belonging to a respective column of the matrix. The column switches Sy1, Sy2, Sy3 are connected opposite to ground.
- the respective line switches Sx1a, Sx1b, Sx2a, Sx2b are connected to an inverter whose output is designated RF supply.
- the inverter is formed by two inverter switches S highside , S lowside . These are preceded by a capacitor Cs and a voltage source U.
- the grid diodes D11, D12, D21, D22 ensure that no unwanted currents occur through induction coils, as these are prevented by the grid diodes D11, D12, D21, D22.
- Fig. 4 represented by the Fig. 2 similar. At all times, a current flow takes place exclusively in the induction coils, which at this time (T11 or T22 in Fig. 4 ) are to be electrically excited.
- Fig. 4 shows the respective coil currents through the induction coils L.
- a pot is on the coils L11 and L22.
- FIG. 3 shown embodiment with a 2x3 matrix can also be extended, for example, to a 4x4 matrix.
- Fig. 5 an embodiment according to the prior art
- Fig. 6 shows an embodiment according to the invention, ie with grid diodes D11, ..., D43.
- Fig. 7 shows an embodiment in which the respective second, that is arranged on the right line return switches are replaced by diodes SDx1, SDx2, SDx3, SDx4.
- the advantage of such an embodiment is that a further switch per line is saved.
- a corresponding replacement of the first or left-hand line switches arranged by respective diodes would also be possible.
- Fig. 8 shows an embodiment in which compared to in Fig. 7 illustrated embodiment, all semiconductor switches are realized by N-channel MOSFETs self-locking. It should be noted that the column switching elements in contrast to the line switches require a freewheeling diode. However, this does not mean that the line switches can not or should not have a freewheeling diode.
- Fig. 9 shows an embodiment, which compared to in Fig. 8 embodiment shown instead of MOSFETs N-channel IGBTs used self-locking. This is advantageous because in the non-activated state of the gate (for example, failure in the power supply of the controller) no current can flow, even if voltage is applied to the semiconductor.
- N-channel semiconductors have a lower RDS (on) for MOSFETs and Vce (sat) for IGBTs, which is why they are more efficient than P-channel semiconductors.
- Fig. 10 shows an embodiment of the invention, in which only one resonant circuit capacitor C1, C2, C3, C4 is provided per column.
- the resonant circuit elements are formed only by a respective induction coil L. Due to the line-wise and time-shifted control, the induction coils L in each column can share the resonant circuit capacitor C.
- the semiconductor switches Sy1-Sy4 are advantageously bidirectionally conductive so that the electrical current from the capacitor C can flow back to the induction coil L during one oscillation period. This is the case with MOSFETs or IGBTs with freewheeling diodes.
- Fig. 11 shows an embodiment in which the respective column capacitor is designed as a double capacitor (C1a, b-C4a, b) to the highside and lowside, as is usually realized in a series resonant circuit with half-bridge drive for inductive heating.
- Fig. 12 shows an embodiment in which the semiconductors for switching the lines are designed as fast inverter switches.
- the main inverter (S (highside), S (lowside)) of the previous embodiments can be dispensed with.
- Each switch S1xa-S4xa or S1xb-S4xb can advantageously have a diode Dx1a-Dx4a or Dx1b-Dx4b connected in parallel to the current flow (analogous to the freewheeling diode of the IGBT) in order to generate a countervoltage generated by the inductance of the induction coil during the dead time in the switching process prevent.
- Fig. 13 shows an embodiment, which compared to the embodiment of Fig. 12 is modified so that only a respective column capacitor C1, ..., C4 is used.
- Fig. 14 shows an embodiment, which compared to the embodiment of Fig. 12 modified to the effect that the respective column capacitors are made in two parts.
- Fig. 15 shows an embodiment which addresses the disadvantage that in previous embodiments with the number of columns, the number of diodes connected in series increases. This increases the loss with each additional column due to the Voltage drop at the diode lines. In addition, as the voltage is reduced, the transmittable power of the induction coils is also reduced. Since the current flow for the column 4 flows through a plurality of diodes, for example to column 2, the voltage and thus the transmittable power at the induction coils in column 4 is lower than at the induction coils in column 2.
- each induction coil L each with two diodes D directly connected to the respective line switch Sx1-4a.
- the disadvantage here is the approximate doubling of the number of diodes in comparison to the embodiments described above.
- Fig. 16 shows a timing diagram for a driving variant of a cooktop with a 4x4 arrangement of induction coils L, in which each induction coil Lxy is excited in its associated time window Txy, where x is the row number and y is the column number of the respective induction coil L.
- the number of time windows corresponds to the number of induction coils. If an induction coil L is not switched on, the corresponding switch of the column remains switched off in the corresponding time window Txy. If, by way of example, the induction coil L22 is not to be excited, then the switch Sy2 blocks in the time window T22. This is represented in the time window T22 for Sy2 by a dotted line.
- the disadvantage here is that each induction coil requires a discrete time window and thus the instantaneous power must be N times the rated voltage, where N represents the number of induction coils L.
- Fig. 17 shows a timing diagram for driving induction coils L, this control does not occur at fixed time windows.
- the control can also be done line by line or column by column, as is customary in the control of displays, for example, in time division multiplex.
- Fig. 17 shows an example of the time course of a line by line control of a hob with a 4x4 arrangement of induction coils.
- Txy for each line 1 to 4 in this case the corresponding line switch Sx1a-b becomes conductive.
- the corresponding switches of the column of electrically excited induction coils of this column are then also turned on.
- the line 1 are pulled through thin, the line 2 thinly dashed, the line 3 pulled through thick and line 4 thick dashed lines.
- a corresponding algorithm can decide depending on the pot position, whether a row-wise or column-by-column control for the corresponding constellation of the induction coils L to be switched on is more favorable.
- the control of induction coils can be carried out in pulse packets while adhering to a flicker standard.
- the nominal power can be less than N times the rated power, since not all lines are or must be in operation or some lines have the same pattern, which leads to the simplification of the drive timing. This is explained by three examples, which in the Fig. 18 to 23 are shown.
- Fig. 18 shows a 4x4 hob in matrix control with rows R1-4 and columns C1-4.
- a pot 1 is placed above the induction coils L21 and L22, and a pot 2 is placed above the induction coils L33 and L34. These are shown with 1 and 2. Thus, rows R1 and R4 are not needed.
- the timing off Fig. 17 can thus be significantly simplified, namely to that which in Fig. 19 is shown.
- the rows R2 and R3 are excited twice per period of time.
- the maximum power of each induction coil L only has to correspond to twice the rated power.
- the line 1 are pulled through thin, the line 2 thinly dashed, the line 3 pulled through thick and line 4 thick dashed lines.
- Fig. 20 In the execution of Fig. 20 are two cooking vessels 1 and 2 set up and cover each four induction coils L. Note that the driving pattern of the line R1 corresponds to that of line R2. Thus, the drive of the return line switch for R1 can be done simultaneously with that of the return line switch for R2. The same applies to R3 and R4.
- Fig. 22 In the execution of Fig. 22 is only a pot 1 with the hob available, so that can be completely dispensed with a temporal multiplex of the control. Lines 1 and 4 are not covered and thus not activated. Activation of the columns for lines 2 and 3 is identical. Thus, can be dispensed with a time multiplex.
- the switches Sx2a / b and Sx3a / b can be permanently closed. The same applies to the switches Sy2 and Sy3.
- An appropriate timing is in Fig. 23 shown. Again, the line 1 are pulled through thin, the line 2 thinly dashed, the line 3 pulled through thick and line 4 thick dashed lines.
- the entire calculation process can or is not only done line by line, but can or will be done column by column.
- the cheaper or less expensive variant is then executed.
- Cheaper means here mean that more columns remain off or can be operated together and thus the period of the control is shortened. So the choice depends on whether more rows or more columns remain off or can be operated together.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
Die Erfindung betrifft eine Induktionskochvorrichtung mit einer Mehrzahl von Zeilenleitungen, einer Mehrzahl von Spaltenleitungen sowie einer Mehrzahl von Schwingkreiselementen, wobei Leckströme dadurch unterdrückt werden, dass durch eine spezielle Verschaltung von an einer Zeilenleitung angeschlossenen ersten Polen der Schwingkreiselemente höchstens ein jeweiliger erster Pol mit dem jeweiligen zweiten Zeilenleitungsende unmittelbar verbunden ist.The invention relates to an induction cooking apparatus having a plurality of row lines, a plurality of column lines and a plurality of resonant circuit elements, wherein leakage currents are suppressed by a special interconnection of connected to a row line first poles of the resonant circuit elements at most a respective first pole with the respective second Row line end is connected directly.
Description
Die Erfindung betrifft eine Induktionskochvorrichtung mit einer Mehrzahl von Zeilenleitungen, einer Mehrzahl von Spaltenleitungen, einer Mehrzahl von Schwingkreiselementen mit einem jeweiligen ersten Pol und einem jeweiligen zweiten Pol, einer Mehrzahl von Gitterdioden und einem Inverter. Jedes Schwingkreiselement ist mit seinem ersten Pol mit genau einer der Zeilenleitungen verbunden. Jedes Schwingkreiselement ist mit seinem zweiten Pol mit genau einer der Spaltenleitungen verbunden. Jede Spaltenleitung weist einen jeweiligen endseitigen Spaltenschalter auf. Ebenso betrifft die Erfindung ein Verfahren zur Ansteuerung einer solchen Induktionskochvorrichtung.The invention relates to an induction cooking apparatus having a plurality of row lines, a plurality of column lines, a plurality of resonant circuit elements having a respective first pole and a respective second pole, a plurality of grid diodes and an inverter. Each resonant circuit element is connected with its first pole to exactly one of the row lines. Each resonant circuit element is connected to its second pole with exactly one of the column lines. Each column line has a respective end-side column switch. The invention likewise relates to a method for controlling such an induction cooking device.
Derartige Induktionskochvorrichtungen sind aus dem Stand der Technik bekannt und dienen insbesondere zur Realisierung eines echten Flächenkochens. Typischerweise weisen die Schwingkreiselemente Induktionsheizspulen auf, mit welchen auf einem Kochfeld stehende Töpfe beheizt werden können. Beispielhafte Ausführungen sind in
Die am weitesten verbreiteten leistungselektronischen Schaltungen für die induktive Beheizung eines Induktionskochfelds sind der resonante (Serien-)Schwingkreis und der quasi-resonante Parallelschwingkreis. Letzterer besitzt den Vorteil, dass ein Schaltelement und ein Kondensator weniger als mit dem Serienschwingkreis benötigt werden.The most widely used power electronic circuits for inductive heating of an induction hob are the resonant (series) resonant circuit and the quasi-resonant parallel resonant circuit. The latter has the advantage that a switching element and a capacitor are required less than with the series resonant circuit.
Es ist wünschenswert, eine große Anzahl von Induktionsspulen, insbesondere kleinere Induktionsspulen, ohne Relais mit wenigen Schaltelementen anzusteuern.It is desirable to drive a large number of induction coils, in particular smaller induction coils, without relays with a few switching elements.
In bekannten Kochfeldern wird jede einzelne Spule im Fall der quasi-resonanten Ausführung durch einen Halbleitertransistor bzw. im Fall der Ausführung als Serienschwingkreis durch zwei Halbleitertransistoren, üblicherweise IGBTs, angesteuert. Diese Lösung ist aufgrund der hohen Anzahl an Halbleitern für viele Induktionsspulen (beispielsweise 20 bis 50) sehr teuer. Für n Induktionsspulen werden mindestens n Halbleiter benötigt.In known cooktops, each individual coil is driven in the case of quasi-resonant design by a semiconductor transistor or in the case of the embodiment as a series resonant circuit by two semiconductor transistors, usually IGBTs. This solution is very expensive for many induction coils (for example, 20 to 50) because of the large number of semiconductors. For n induction coils at least n semiconductors are required.
Aus dem Stand der Technik ist das Ansteuern von Widerstandsheizelementen im Multiplexverfahren bekannt. Eine Verschaltung von Induktoren bzw. Induktionsspulen durch Zeilen und Spalten ermöglicht die Ersparnis von Halbleiterschaltern und eventuell von Kondensatoren. Der Aufbau eines Kochfelds vereinfacht sich außerdem, da nicht zu jeder Induktionsspule ein Leitungspaar für hohe Ströme von einem Inverter hingeführt werden muss, sondern die Leitung weitergeschleift wird.The driving of resistance heating elements in the multiplex method is known from the prior art. An interconnection of inductors or induction coils by rows and columns enables the saving of semiconductor switches and possibly of capacitors. Of the The design of a cooktop is also simplified, since it is not necessary for each induction coil to lead a line pair for high currents from an inverter, but the line is looped on.
Eine beispielhafte Implementierung einer Induktionskochvorrichtung gemäß dem Stand der Technik ist in
Mit U ist eine aus der Netzspannung gleichgerichtete, pulsierende Gleichspannungsquelle bezeichnet, eventuell kann es auch eine reine Gleichspannung sein, die durch eine PFC (Power Factor Correction)-Schaltung erzeugt ist. Cs ist ein Zwischenkreiskondensator, welcher die Zwischenkreisspannung der Halbbrücken mit Schwingkreisen stabilisiert. Jede Zeile (Sx1a-Sx4a) oder Spalte (Sy1-Sy4) verfügt über einen Schalter (IGBT-Transistoren oder MOSFET-Transistoren). Die Halbleiter zum Schalten der Zeilen und Spalten sind im Gegensatz zu den Wechselrichterschaltern (Shighside, Slowside) zur Erzeugung der Hochfrequenz langsam schaltend und müssen somit nicht hochwertig ausgeführt sein, alternativ kann auf eine geringe Durchlassspannung Vce(sat) bei IGBTs und/oder einen geringen Durchlasswiderstand RDS(on) bei MOSFETs geachtet werden.U is a rectified from the mains voltage, pulsating DC voltage source, possibly it may also be a pure DC voltage, which is generated by a PFC (Power Factor Correction) circuit. Cs is a DC link capacitor, which stabilizes the DC link voltage of the half bridges with resonant circuits. Each row (Sx1a-Sx4a) or column (Sy1-Sy4) has a switch (IGBT transistors or MOSFET transistors). The semiconductors for switching the rows and columns are in contrast to the inverter switches (S highside , S lowside ) for generating the high frequency slowly switching and thus need not be executed high quality, alternatively, a low forward voltage Vce (sat) in IGBTs and / or a low on-resistance RDS (on) should be considered for MOSFETs.
Für jeden Transistor wird ein Treiberbaustein zur Ansteuerung benötigt, auch für den Wechselrichter. Dafür kommen sogenannte "High-Side"-Treiber wie zum Beispiel Puls-Übertrager (galvanische Trennung möglich) oder aber auch Ladungspumpen (ohne galvanische Trennung) in Frage, wobei dies für alle Zeilenschalter und für den Shighside gilt.For each transistor, a driver block is required for control, also for the inverter. For this come so-called "high-side" drivers such as pulse transformer (galvanic isolation possible) or charge pumps (without galvanic isolation) in question, this applies to all return and for the S highside .
Wird jetzt ein Schalter (Sx1a oder Sx2a) einer Zeile und einer Spalte (Sy1 bzw. Sy2) geschlossen, so wird der Schwingkreis L11C11 bzw. L22C22 angeregt (siehe
Es ist Aufgabe der Erfindung, eine Induktionskochvorrichtung sowie ein Verfahren zur Ansteuerung einer solchen Induktionskochvorrichtung zu schaffen, mit denen Probleme des Standes der Technik vermieden werden können und welche insbesondere in Bezug auf Störungen bzw. mögliche Leckströme optimiert sind.It is an object of the invention to provide an induction cooking apparatus and a method for controlling such an induction cooking, with which problems of the prior art can be avoided and which are optimized in particular with respect to disturbances or possible leakage currents.
Gelöst wird diese Aufgabe durch eine Induktionskochvorrichtung mit den Merkmalen des Anspruchs 1 sowie durch ein Verfahren zur Ansteuerung einer solchen Induktionskochvorrichtung mit den Merkmalen des Anspruchs 14. Vorteilhafte sowie bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Ansprüche und werden im Folgenden näher erläutert. Dabei werden manche der Merkmale nur für die Induktionskochvorrichtung oder nur für das Verfahren genannt. Sie sollen jedoch unabhängig davon sowohl für die Induktionskochvorrichtung als auch für das Verfahren selbständig und unabhängig voneinander gelten können. Der Wortlaut der Ansprüche wird durch ausdrückliche Bezugnahme zum Inhalt der Beschreibung gemacht.This object is achieved by an induction cooking apparatus with the features of
Die Erfindung betrifft eine Induktionskochvorrichtung. Diese weist eine Mehrzahl von Zeilenleitungen und eine Mehrzahl von Spaltenleitungen auf. Sie weist eine Mehrzahl von Schwingkreiselementen mit einem jeweiligen ersten Pol und einem jeweiligen zweiten Pol auf. Außerdem weist sie eine Mehrzahl von Gitterdioden sowie einen Inverter auf. Jedes Schwingkreiselement ist mit seinem ersten Pol mit genau einer der Zeilenleitungen verbunden. Jedes Schwingkreiselement ist mit seinem zweiten Pol mit genau einer der Spaltenleitungen verbunden. Jede Spaltenleitung weist einen jeweiligen endseitigen Spaltenschalter auf.The invention relates to an induction cooking device. This has a plurality of row lines and a plurality of column lines. It has a plurality of resonant circuit elements with a respective first pole and a respective second pole. In addition, it has a plurality of grid diodes and an inverter. Each resonant circuit element is connected with its first pole to exactly one of the row lines. Each resonant circuit element is connected to its second pole with exactly one of the column lines. Each column line has a respective end-side column switch.
Erfindungsgemäß ist vorgesehen, dass jede Zeilenleitung ein erstes Zeilenleitungsende und ein zweites Zeilenleitungsende aufweist, zwischen welchen die jeweiligen ersten Pole der angeschlossenen Schwingkreiselemente angeschlossen sind. Die ersten und zweiten Zeilenleitungsenden sind dabei jeweils mit dem Inverter verbunden, wobei zumindest an einem der Zeilenleitungsenden ein jeweiliger Zeilenschalter angeordnet ist. Jeweilige erste Pole der Schwingkreiselemente sind mit einer jeweiligen Gitterdiode verbunden, welche mit dem jeweiligen zweiten Zeilenleitungsende mit Durchlassrichtung zum zweiten Zeilenleitungsende hin verbunden ist, so dass von den an einer Zeilenleitung angeschlossenen ersten Polen höchstens ein jeweiliger erster Pol mit dem zweiten Zeilenleitungsende unmittelbar verbunden ist.According to the invention, it is provided that each row line has a first line line end and a second line line end, between which the respective first poles of the connected resonant circuit elements are connected. The first and second row line ends are each connected to the inverter, wherein at least one of the row line ends, a respective line switch is arranged. Respective first poles of the resonant circuit elements are connected to a respective grid diode, which is connected to the respective second row line end with forward direction to the second Zeilenleitungsende, so that at most a respective first pole is connected directly to the second row line end of the connected to a row line first poles.
Diese Ausführung vermeidet den eingangs beschriebenen Nachteil durch eine geschickte Anordnung der Gitterdioden. Eine direkte Serienschaltung einer Diode zum Schwingkreis ist dabei nicht möglich, denn ansonsten wird ein freies Schwingen des Serienschwingkreises verhindert. Durch die hier beschriebene Ausführung, insbesondere die Trennung durch Gitterdioden, ist jedoch die Funktion der Schwingkreise gewährleistet. Unerwünschte Ströme durch Induktionsspulen treten dabei nicht auf, da diese durch die Dioden verhindert werden. Zu jedem Zeitpunkt findet dabei ein Stromfluss ausschließlich in den Schwingkreiselementen statt, die zu einem jeweiligen Zeitpunkt elektrisch erregt werden sollen.This embodiment avoids the disadvantage described above by a clever arrangement of the grid diodes. A direct series connection of a diode to the resonant circuit is not possible, otherwise a free swinging of the series resonant circuit is prevented. The embodiment described here, in particular the separation by grating diodes, however, the function of the resonant circuits is ensured. Unwanted currents through induction coils do not occur because they are prevented by the diodes. At any given time, a current flow takes place exclusively in the resonant circuit elements which are to be electrically excited at a particular time.
Es sei verstanden, dass es sich bei dem Begriff der Gitterdioden nicht um eine spezielle Art von Dioden handelt, sondern dass grundsätzlich alle bekannten Ausführungen von Dioden verwendet werden können. Bevorzugt werden verlustarme Dioden bzw. Schottky-Dioden. Die Bezeichnung der Gitterdioden ist gewählt, um klarzustellen, dass sich diese innerhalb eines Gitters aus Zeilenleitungen und Spaltenleitungen befinden. Gemäß einer Ausführung sind die Schwingkreiselemente ein jeweiliger Kondensator und eine jeweilige Spule in Reihenschaltung. Dies kann insbesondere bedeuten, dass jedes Schwingkreiselement einen Schwingkreis an sich darstellt.It should be understood that the term grating diodes is not a special type of diode, but that basically all known types of diodes can be used. Low-loss diodes or Schottky diodes are preferred. The designation of the grid diodes is chosen to make it clear that these are within a grid of row and column lines. According to one embodiment, the resonant circuit elements are a respective capacitor and a respective coil in series. This may in particular mean that each resonant circuit element represents a resonant circuit per se.
Gemäß einer Ausführung sind die Schwingkreiselemente eine jeweilige Spule, wobei ferner in jeder Spaltenleitung ein Kondensator verschaltet ist, welcher mit den jeweiligen angeschlossenen Spulen Reihenschwingkreise bildet. In diesem Fall kann typischerweise ein Schwingkreis nicht bereits durch die jeweiligen Schwingkreiselemente an sich gebildet werden, sondern er entsteht erst in Zusammenschaltung mit dem jeweiligen Kondensator. Dadurch kann die Anzahl an insgesamt benötigten Kondensatoren deutlich reduziert werden.According to one embodiment, the resonant circuit elements are a respective coil, wherein a capacitor is further connected in each column line, which forms series resonant circuits with the respective connected coils. In this case, a resonant circuit typically can not already be formed by the respective resonant circuit elements per se, but rather arises only in conjunction with the respective capacitor. As a result, the number of capacitors required in total can be significantly reduced.
Gemäß einer anderen Ausführung sind die Schwingkreiselemente eine jeweilige Spule, wobei ferner an jeder Spaltenleitung zwei Kondensatoren verschaltet sind, welche mit den jeweiligen angeschlossenen Spulen Reihenschwingkreise bilden. Die jeweilige Spaltenleitung mit dem Spaltenschalter ist dabei zwischen den Kondensatoren angeschlossen.According to another embodiment, the resonant circuit elements are a respective coil, wherein further two capacitors are connected to each column line, which form series resonant circuits with the respective connected coils. The respective column line with the column switch is connected between the capacitors.
Die Spaltenschalter können dabei insbesondere bidirektional leitend sein.The column switches can in particular be bidirectionally conductive.
Bevorzugt sind die Spulen Induktionsspulen. Diese können vorteilhaft zum Beheizen von dafür ausgelegtem Kochgeschirr verwendet werden und sind dann Induktionsheizspulen. Die Induktionsspulen bzw. auch sonstige Schwingkreiselemente können vorzugsweise zueinander identisch sein. Dies kann insbesondere bedeuten, dass alle in der Induktionskochvorrichtung verwendeten gleichartigen Schwingkreiselemente zueinander identisch sind.Preferably, the coils are induction coils. These can be used advantageously for heating cookware designed for this purpose and are then induction heating coils. The induction coils or other resonant circuit elements may preferably be identical to one another. This may in particular mean that all similar resonant circuit elements used in the induction cooking device are identical to each other.
Bevorzugt sind die Schwingkreiselemente in Zeilen und Spalten, insbesondere in Form einer Matrix, angeordnet. Dies führt zu einer übersichtlichen Ausführung, welche eine beispielsweise gleichmäßige Verteilung von Schwingkreiselementen über eine zu beheizende Kochfläche ermöglicht.The resonant circuit elements are preferably arranged in rows and columns, in particular in the form of a matrix. This leads to a clear design, which allows, for example, a uniform distribution of resonant circuit elements via a cooking surface to be heated.
Gemäß einer Ausführung ist an jedem ersten Zeilenleitungsende ein erster Zeilenschalter angeordnet und an jedem zweiten Zeilenleitungsende ist ein zweiter Zeilenschalter angeordnet. Der erste Zeilenschalter und der zweite Zeilenschalter jeder Zeilenleitung sind dabei bevorzugt dazu konfiguriert, gleichzeitig geschaltet zu werden. Dadurch wird eine vorteilhafte gleichzeitige Schaltung beider Zeilenleitungsenden ermöglicht, was den Betrieb aller Schwingkreise auch bei Vorhandensein der bereits erwähnten Gitterdioden sicherstellt.According to one embodiment, a first line switch is arranged on each first line end of the line, and a second line switch is arranged on each second line line end. The first line switch and the second line switch of each row line are preferably configured to be switched simultaneously. As a result, an advantageous simultaneous switching of both row line ends is made possible, which ensures the operation of all resonant circuits even in the presence of the already mentioned grid diodes.
Gemäß einer Ausführung ist an jedem ersten Zeilenleitungsende ein Zeilenschalter angeordnet und an jedem zweiten Zeilenleitungsende ist eine jeweilige Zeilendiode mit Durchlassrichtung vom Zeilenschalter weg angeordnet. Auch mit einer solchen Ausführung wird der Betrieb der Schwingkreise auch bei Verwendung der Gitterdioden sichergestellt. Die erwähnte Zeilendiode stellt dabei ein im Vergleich zu Zeilenschaltern typischerweise günstigeres Bauelement dar, welches zudem nicht gesteuert zu werden braucht.According to one embodiment, a line switch is arranged on each first row line end and on each second line line end a respective line diode is arranged in the forward direction away from the line switch. Even with such an embodiment, the operation of the resonant circuits is ensured even when using the grid diodes. The aforementioned line diode is in this case a component which is typically more favorable in comparison to row switches, which component also does not need to be controlled.
Gemäß einer Ausführung ist von den an einer Zeilenleitung angeschlossenen Polen nur derjenige Pol, welcher am nächsten zum zweiten Zeilenleitungsende angeschlossen ist, mit dem zweiten Zeilenleitungsende unmittelbar verbunden. Dadurch kann die bereits erwähnte und gewünschte Unterdrückung von Leckströmen in vorteilhafter Weise erreicht werden.According to one embodiment, of the poles connected to a row line, only one pole, which is connected closest to the second row line end, is directly connected to the second row line end. Thereby, the already mentioned and desired suppression of leakage currents can be achieved in an advantageous manner.
Bevorzugt sind die Schalter als selbstsperrende N-Kanal-MOSFETs ausgeführt. Dies hat sich in der Praxis als vorteilhaft erwiesen. Dies kann alle Schalter oder auch nur einen Teil der Schalter, beispielsweise Zeilenschalter und/oder Spaltenschalter betreffen.Preferably, the switches are designed as self-locking N-channel MOSFETs. This has proven to be advantageous in practice. This may relate to all switches or even only a part of the switches, for example, line switches and / or column switches.
Bevorzugt weisen die Spaltenschalter eine jeweilige Freilaufdiode auf. Damit können eventuelle parasitäre Ströme abgeleitet werden.The column switches preferably have a respective freewheeling diode. Thus, any parasitic currents can be derived.
Die Zeilenschalter bilden gemäß einer Ausführung der Erfindung einen Inverter. Dadurch können zusätzliche Schaltelemente zum Ausbilden des Inverters eingespart werden. Die Gitterdioden sind gemäß einer Ausführung zwischen jeweils zwei ersten Polen verschaltet. Damit können sie vorteilhaft die gewünschte Wirkung zur Unterdrückung unerwünschter Leckströme ausüben.The line switches form an inverter according to an embodiment of the invention. As a result, additional switching elements for forming the inverter can be saved. The grid diodes are connected according to an embodiment between two first poles. Thus they can advantageously exert the desired effect to suppress unwanted leakage currents.
Gemäß einer weiteren Ausführung ist jeder erste Pol mittels einer jeweiligen Gitterdiode mit dem ersten Zeilenleitungsende verbunden und mittels einer jeweiligen weiteren Gitterdiode mit dem zweiten Zeilenleitungsende verbunden. Jede Gitterdiode ist dabei mit Durchlassrichtung zum zweiten Zeilenleitungsende hin verschaltet. Diese Ausführung ist zwar komplexer, bietet jedoch den Vorteil einer gleichmäßigen Verteilung der Spannungen unter den Schwingkreiselementen.According to a further embodiment, each first pole is connected by means of a respective grid diode to the first row line end and connected by means of a respective further grid diode to the second row line end. Each grid diode is interconnected with the forward direction to the second end of the line line. Although this design is more complex, it has the advantage of even distribution of the voltages among the oscillating circuit elements.
Bevorzugt weist die Induktionskochvorrichtung ferner eine Topferkennung auf, welche dazu ausgebildet ist, die Zeilenschalter und Spaltenschalter so zu schalten, dass nur Schwingkreiselemente unter einem erkannten Topf durch den Inverter angeregt werden. Dies ermöglicht einen optimalen Einsatz und eine Einsparung von Energie, da nur die benötigten Schwingkreiselemente auch tatsächlich angesteuert werden.Preferably, the induction cooking device further comprises a cup detection, which is designed to switch the line switches and column switches so that only resonant circuit elements are excited under a detected pot by the inverter. This allows optimal use and a saving of energy, since only the required resonant circuit elements are actually controlled.
Bevorzugt sind die Schwingkreiselemente Induktionsspulen bzw. Induktionsheizspulen oder weisen solche auf, welche in Zeilen und Spalten nebeneinander und hintereinander angeordnet sind. Sie sind also in entsprechender Konfiguration an einem Kochfeld verteilt, wobei vorteilhaft die Spalten die Anordnung hintereinander meint. Die Zeilen sind die Anordnung von Induktionsspulen seitlich nebeneinander. Vorzugsweise sind die Induktionsspulen in mindestens vier Zeilen und drei Spalten angeordnet, also in einem Feld mit drei Induktionsspulen hintereinander und vier Induktionsspulen seitlich nebeneinander. Dies hat sich für typische Anwendungen bewährt, da eine ausreichende Variabilität bezüglich verwendeter Topfgrößen und -positionen erreicht wird, ohne übermäßig viele Bauelemente einzusetzen.The resonant circuit elements are preferably induction coils or induction heating coils or have such, which are arranged in rows and columns next to each other and behind each other. They are thus distributed in a corresponding configuration on a hob, wherein advantageously the columns means the arrangement one behind the other. The lines are the arrangement of induction coils side by side. Preferably, the induction coils are arranged in at least four rows and three columns, ie in a field with three induction coils in a row and four induction coils side by side. This has been proven for typical applications because sufficient variability in pot sizes and positions used is achieved without using excessive numbers of components.
Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombination bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. Die Unterteilung der Anmeldung in einzelne Abschnitte sowie Zwischen-Überschriften beschränken die unter diesen gemachten Aussagen nicht in ihrer Allgemeingültigkeit.These and other features will become apparent from the claims but also from the description and drawings, wherein the individual features each alone or more in the form of sub-combination in one embodiment of the invention and in other areas be realized and advantageous and protectable Represent embodiments for which protection is claimed here. The subdivision of the application into individual sections as well as intermediate headings does not restrict the general validity of the statements made thereunder.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen schematisch dargestellt und werden im Folgenden näher erläutert. In den Zeichnungen zeigen:
- Fig. 1:
- eine Induktionskochvorrichtung gemäß dem Stand der Technik,
- Fig. 2:
- Spulenströme der Induktionskochvorrichtung gemäß dem Stand der Technik,
- Fig. 3:
- ein Ausführungsbeispiel der Erfindung,
- Fig. 4:
- Spulenströme zum ersten Ausführungsbeispiel der Erfindung,
- Fig. 5:
- eine Induktionskochvorrichtung gemäß dem Stand der Technik
- Fig. 6 bis 15:
- ein zweites bis elftes Ausführungsbeispiel der Erfindung,
- Fig. 16:
- ein Zeitdiagramm,
- Fig. 17:
- ein weiteres Zeitdiagramm,
- Fig. 18:
- eine mögliche Belegung eines Kochfelds,
- Fig. 19:
- ein zugehöriges Zeitdiagramm,
- Fig. 20:
- eine weitere mögliche Belegung eines Kochfelds,
- Fig. 21:
- ein zugehöriges Zeitdiagramm,
- Fig. 22:
- eine nochmals weitere mögliche Belegung eines Kochfelds,
- Fig. 23:
- ein zugehöriges Zeitdiagramm und
- Fig. 24:
- ein Ablaufdiagramm.
- Fig. 1:
- an induction cooking apparatus according to the prior art,
- Fig. 2:
- Coil currents of the induction cooking apparatus according to the prior art,
- 3:
- an embodiment of the invention,
- 4:
- Coil currents to the first embodiment of the invention,
- Fig. 5:
- an induction cooking apparatus according to the prior art
- 6 to 15:
- A second to eleventh embodiments of the invention,
- Fig. 16:
- a time diagram,
- Fig. 17:
- another time diagram,
- Fig. 18:
- a possible occupation of a hob,
- Fig. 19:
- an associated time diagram,
- Fig. 20:
- another possible occupation of a hob,
- Fig. 21:
- an associated time diagram,
- Fig. 22:
- another possible occupancy of a hob,
- Fig. 23:
- an associated timing diagram and
- Fig. 24:
- a flowchart.
Die
In der Induktionskochvorrichtung von
Die jeweiligen Zeilenschalter Sx1a, Sx1b, Sx2a, Sx2b sind mit einem Inverter verbunden, dessen Ausgang mit RF-Supply bezeichnet ist. Der Inverter wird dabei durch zwei Inverterschalter Shighside, Slowside, gebildet. Diesen vorgeschaltet sind ein Kondensator Cs sowie eine Spannungsquelle U.The respective line switches Sx1a, Sx1b, Sx2a, Sx2b are connected to an inverter whose output is designated RF supply. The inverter is formed by two inverter switches S highside , S lowside . These are preceded by a capacitor Cs and a voltage source U.
In den Zeilen zwischen den Zeilenschaltern Sx1a, Sx1b, Sx2a, Sx2b sind jeweilige Gitterdioden D11, D12, D21, D22 verschaltet. Je Zeile sind dabei zwei dieser Gitterdioden verschaltet. Dies führt dazu, dass lediglich die am weitesten rechts in der Matrix liegenden Schwingkreiselemente unmittelbar mit den jeweiligen rechts liegenden Zeilenschaltern Sx1b, Sx2b verbunden sind. Die Durchlassrichtung weist dabei jeweils zu dem zweiten Zeilenschalter Sx1b, Sx2b hin.In the rows between the row switches Sx1a, Sx1b, Sx2a, Sx2b respective grid diodes D11, D12, D21, D22 are connected. For each row, two of these grid diodes are interconnected. This leads to the fact that only the rightmost in the matrix lying resonant circuit elements are directly connected to the respective right line switches Sx1b, Sx2b. In this case, the forward direction points in each case to the second line switch Sx1b, Sx2b.
Die Gitterdioden D11, D12, D21, D22 sorgen dafür, dass keine unerwünschten Ströme durch Induktionsspulen auftreten, da diese durch die Gitterdioden D11, D12, D21, D22 verhindert werden. Dies ist in
Die in
Bezüglich der entsprechenden Merkmale, mit welchen sich die Ausführungsbeispiele der
Um dies zu vermeiden, wird bei dem in
Die Leistung der Induktionsspule soll im ungünstigsten Fall bei N Spalten (im Beispiel N=4) das N-Fache der Nennleistung betragen.The power of the induction coil should be in the worst case at N columns (in the example N = 4) N times the rated power.
Ein entsprechender Algorithmus kann in Abhängigkeit von der Topfposition entscheiden, ob eine zeilenweise oder spaltenweise Ansteuerung für die entsprechende Konstellation der einzuschaltenden Induktionsspulen L günstiger ist.A corresponding algorithm can decide depending on the pot position, whether a row-wise or column-by-column control for the corresponding constellation of the induction coils L to be switched on is more favorable.
Die Ansteuerung von Induktionsspulen kann in Pulspaketen bei Einhaltung einer Flicker-Norm erfolgen.The control of induction coils can be carried out in pulse packets while adhering to a flicker standard.
In der Praxis zeigt sich, dass die Nennleistung geringer als das N-Fache der Nennleistung sein kann, da nicht alle Zeilen in Betrieb sind bzw. sein müssen oder einige Zeilen das gleiche Muster aufweisen, welches zur Vereinfachung des Ansteuer-Timings führt. Dies wird an drei Beispielen erklärt, welche in den
Das Timing aus
Bei der Ausführung von
Dieses Timing ist in
Wird die Ansteuerung von zwei Zeilen bzw. Spalten wie beschrieben durchgeführt und diese Art der Ansteuerung mit der Ausführung von
Bei der Ausführung von
Für Flächenkochfelder mit vielen kleinen Induktionsspulen ist es möglich, Zeilen, in denen nur eine einzige Induktionsspule von einem Topf überdeckt ist, wobei der Topf so groß ist, dass mehrere Induktionsspulen überdeckt werden, diese Zeile mit dieser Induktionsspule komplett ausgeschaltet zu lassen, um das Timing zu vereinfachen. Dies gilt unter der Voraussetzung, dass die Induktionsspulen klein genug sind und der Leistungsverlust durch die restlichen Induktionsspulen kompensiert werden kann. Weiterhin sollte dadurch auftretenden Inhomogenität in der Beheizung des Topfes im tolerierbaren Bereich liegen. Ebenso kann eine nicht überdeckte oder nicht ausreichend überdeckte Induktionsspule einer Zeile bestromt werden, um zeilenweise gleiche Ansteuermuster zu erhalten und somit das Timing ebenfalls zu vereinfachen. Damit ist ein geringer Anstieg des Streufeldes zu erwarten, der jedoch bei kleinen Spulen gering ausfällt. Das Finden eines geeigneten Ansteuer-Timings wird durch einen Algorithmus entsprechend einem erfindungsgemäßen Verfahren ermöglicht, welcher in
- Ermittlung der durch Töpfe auf der Induktionskochvorrichtung überdeckten Induktionsspulen,
- Zuordnung der Induktionsspulen zu den jeweiligen Töpfen,
- Zuordnung der Induktionsspulen zu den jeweiligen Zeilen,
- Ermittlung nicht angesteuerter Zeilen für das Timing, da diese Zeilen nicht betrieben werden sollen,
- Ermittlung der Zeilen mit gleicher Spaltenansteuerung, da diese Zeilen im gleichen Zeitfenster betrieben werden können,
- Ermittlung der Zeilen, die durch Multiplikation (Hinzufügen oder Weglassen) einer Induktionsspule zeitgleich mit anderen Zeilen angesteuert werden können, da auch diese Zeilen im gleichen Zeitfenster betrieben werden können,
- Ermittlung der Pulspakete für den entsprechenden Zustand und die entsprechende Kochstufe für jeden Topf.
- Determination of the induction coils covered by pots on the induction cooking device,
- Assignment of the induction coils to the respective pots,
- Assignment of the induction coils to the respective lines,
- Determination of uncontrolled lines for the timing, since these lines should not be operated,
- Determination of the rows with the same column control, since these rows can be operated in the same time window,
- Determination of the lines that can be controlled by multiplication (addition or omission) of an induction coil at the same time as other lines, since these lines can also be operated in the same time window,
- Determination of the pulse packets for the corresponding state and the corresponding cooking level for each pot.
Der ganze Berechnungsvorgang kann bzw. wird nicht nur zeilenweise vorgenommen, sondern kann bzw. wird auch spaltenweise erfolgen. Die günstigere oder weniger aufwändige Variante wird dann eben ausgeführt. Günstiger soll hier bedeuten, dass mehr Spalten ausgeschaltet bleiben oder zusammen betrieben werden können und somit die Periodendauer der Ansteuerung verkürzt wird. Die Auswahl hängt also davon ab, ob mehr Zeilen oder ob mehr Spalten ausgeschaltet bleiben oder zusammen betrieben werden können.The entire calculation process can or is not only done line by line, but can or will be done column by column. The cheaper or less expensive variant is then executed. Cheaper means here mean that more columns remain off or can be operated together and thus the period of the control is shortened. So the choice depends on whether more rows or more columns remain off or can be operated together.
Bei Betrachtung der Leistungsverteilung fällt auf, dass üblicherweise Kochfelder mit zwei Phasen betrieben werden. Dadurch beträgt beispielsweise die Nenn-Gesamtaufnahmeleistung 7,2 kW. Bei einer Leistung von 400 W pro Induktionsspule ergibt sich daraus, dass maximal 7,2 kW/400 = 18 Induktionsspulen gleichzeitig während eines Zeitfensters betrieben werden können. Diese Überlegung zeigt auch, dass bei einer Ansteuerung im Zeitmultiplex nur 18 Induktionsspulen berücksichtigt werden müssen. Dies gilt für dieses Ausführungsbeispiel und bei maximaler Leistung aller Induktionsspulen. Bei geringerer Leistung können entsprechend mehr Induktionsspulen betrieben werden.When looking at the power distribution, it is noticeable that cooking hobs are usually operated with two phases. As a result, for example, the rated total input power is 7.2 kW. With an output of 400 W per induction coil, this results in that a maximum of 7.2 kW / 400 = 18 induction coils can be operated simultaneously during a time window. This consideration also shows that only 18 induction coils have to be taken into account in the case of control in the time multiplex. This applies to this embodiment and at maximum power of all induction coils. At lower power correspondingly more induction coils can be operated.
Claims (15)
dadurch gekennzeichnet, dass
characterized in that
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017211099.6A DE102017211099A1 (en) | 2017-06-29 | 2017-06-29 | Induction cooking device and method for driving an induction cooking device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3422815A1 true EP3422815A1 (en) | 2019-01-02 |
EP3422815B1 EP3422815B1 (en) | 2020-10-21 |
Family
ID=62814945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18180281.0A Active EP3422815B1 (en) | 2017-06-29 | 2018-06-28 | Induction cooking device and method for controlling same |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3422815B1 (en) |
DE (1) | DE102017211099A1 (en) |
ES (1) | ES2844473T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3562267B1 (en) | 2018-04-23 | 2020-09-23 | Whirlpool Corporation | Control circuits and methods for distributed induction heating devices |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997019298A1 (en) * | 1995-11-21 | 1997-05-29 | Aktiebolaget Electrolux | A cooking surface with controls |
EP1303168A1 (en) * | 2001-10-12 | 2003-04-16 | Whirlpool Corporation | Cooking hob with discrete distributed heating elements |
US6870138B2 (en) * | 2003-01-20 | 2005-03-22 | Whirlpool Corporation | Electric cooking hob and method for determining the location of cooking utensils on it |
EP2928265A1 (en) * | 2014-04-03 | 2015-10-07 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Induction heating device and induction hob |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2355453B1 (en) * | 2008-12-19 | 2012-02-23 | Bsh Electrodomesticos España, S.A. | COOKING FIELD WITH A PLURALITY OF HEATING ELEMENTS. |
ES2347403B1 (en) | 2008-12-19 | 2011-08-17 | Bsh Electrodomesticos España, S.A. | COOKING FIELD BY INDUCTION AND PROCEDURE TO OPERATE A COOKING FIELD BY INDUCTION. |
KR101535145B1 (en) * | 2009-05-04 | 2015-07-08 | 엘지전자 주식회사 | Cooker and controlling method thereof |
WO2015159536A1 (en) * | 2014-04-15 | 2015-10-22 | パナソニックIpマネジメント株式会社 | Induction heating device |
-
2017
- 2017-06-29 DE DE102017211099.6A patent/DE102017211099A1/en not_active Withdrawn
-
2018
- 2018-06-28 EP EP18180281.0A patent/EP3422815B1/en active Active
- 2018-06-28 ES ES18180281T patent/ES2844473T3/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997019298A1 (en) * | 1995-11-21 | 1997-05-29 | Aktiebolaget Electrolux | A cooking surface with controls |
EP1303168A1 (en) * | 2001-10-12 | 2003-04-16 | Whirlpool Corporation | Cooking hob with discrete distributed heating elements |
US6870138B2 (en) * | 2003-01-20 | 2005-03-22 | Whirlpool Corporation | Electric cooking hob and method for determining the location of cooking utensils on it |
EP2928265A1 (en) * | 2014-04-03 | 2015-10-07 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Induction heating device and induction hob |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3562267B1 (en) | 2018-04-23 | 2020-09-23 | Whirlpool Corporation | Control circuits and methods for distributed induction heating devices |
Also Published As
Publication number | Publication date |
---|---|
EP3422815B1 (en) | 2020-10-21 |
DE102017211099A1 (en) | 2019-01-03 |
ES2844473T3 (en) | 2021-07-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1935213B1 (en) | Method for operating an induction heating device | |
EP2380400B1 (en) | Induction hob and method for operating an induction hob | |
EP1927183B1 (en) | Method for controlling a multiphase power converter having distributed energy stores | |
EP2928265B1 (en) | Induction heating device and induction hob | |
EP2654190B1 (en) | Method for operating an electric circuit | |
EP1852959A1 (en) | Power Supply for Medium Frequency Plasma Generator | |
EP0865150A2 (en) | Circuit for continuous direct or indirect variation of DC and/or AC current flowing in a load supplied by DC or AC source voltage or any combination of these voltages | |
EP3507895B1 (en) | Change in the switching state of a switching half bridge | |
EP0677917A2 (en) | Circuit arrangement with an inverter | |
WO2018116055A1 (en) | Domestic appliance | |
EP3422815B1 (en) | Induction cooking device and method for controlling same | |
EP1094605B1 (en) | Circuit arrangement for controlling a load with reduced stray radiation | |
CH703021B1 (en) | Circuit arrangement for an induction cooking appliance process for operating the circuit arrangement for an induction cooking appliance. | |
DE102013220842B4 (en) | Method for switching a cycle in a power transistor circuit | |
DE102005045552B4 (en) | circuitry | |
EP2783464B1 (en) | Electronic circuit and method for triggering a semiconductor switch | |
DE102020201810B4 (en) | power converter circuit | |
DE102005038525A1 (en) | Induction cooking arrangement, has control device generating control signals for respective transistors and formed such that phase displacement between signal pairs is adjusted based on adjusted thermal output of coil | |
DE102016220892A1 (en) | Power converter and method for controlling a power converter | |
EP0226006A1 (en) | Switching amplifier for analogous low-frequency signals | |
EP2506667B1 (en) | Induction heating device | |
DE102022132875A1 (en) | Method for controlling a power converter | |
DE102007021388B4 (en) | MF power generator | |
WO2024208772A1 (en) | Induction hob device | |
EP4013191A1 (en) | Induction cooking appliance |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190627 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: H05B 6/06 20060101ALI20200527BHEP Ipc: H05B 6/12 20060101AFI20200527BHEP |
|
INTG | Intention to grant announced |
Effective date: 20200615 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: E.G.O. ELEKTRO-GERAETEBAU GMBH |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502018002777 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1327204 Country of ref document: AT Kind code of ref document: T Effective date: 20201115 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20201021 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210222 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210122 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210121 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210121 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210221 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502018002777 Country of ref document: DE Ref country code: ES Ref legal event code: FG2A Ref document number: 2844473 Country of ref document: ES Kind code of ref document: T3 Effective date: 20210722 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
26N | No opposition filed |
Effective date: 20210722 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20210630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210628 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210630 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210628 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20210221 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210630 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20220628 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220628 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20180628 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230621 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20230630 Year of fee payment: 6 Ref country code: ES Payment date: 20230719 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240617 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1327204 Country of ref document: AT Kind code of ref document: T Effective date: 20230628 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201021 |