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公开(公告)号：US11903114B2
公开(公告)日：2024-02-13
申请号：US17303557
申请日：2021-06-02
摘要： A method for operating an induction hob (100), wherein the induction hob (100) comprises: an inverter (1), which is supplied with a supply voltage (US), at least one capacitor (2, 3), and an induction heating coil (4), wherein the at least one capacitor (2, 3) and the induction heating coil (4) are interconnected such that they constitute an oscillating circuit (5), and wherein the inverter (1) is configured to generate a pulse-width modulated excitation voltage (UA) for the oscillating circuit (5) from the supply voltage (US), wherein the method comprises the following steps: a) generation of the pulse-width modulated excitation voltage (UA) having a predefined voltage characteristic, b) measurement of a resulting oscillating circuit current (iS), particularly by means of the induction heating coil (4), c) determination of electrical oscillating circuit parameters, according to the voltage characteristic of the pulse-width modulated excitation voltage (UA) and the measured oscillating circuit current (iS), d) n-times repetition of steps a) to c) using a different voltage characteristic of the excitation voltage (UA) for the determination of electrical voltage characteristic-dependent oscillating circuit parameters, and e) determination of operating variables of the induction hob (100) from voltage characteristic-dependent electrical oscillating circuit parameters.
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公开(公告)号：US20220003421A1
公开(公告)日：2022-01-06
申请号：US17304886
申请日：2021-06-28
摘要： A cooktop is designed to be operated either in a cooking operation or in a lighting operation, with the modes of operation not being able to occur together. Within cooking operation, the cooktop controller controls heating devices of the cooktop and light sources of the cooktop in a cooking lighting mode, wherein a luminosity of the light sources is limited to a cooking luminosity below the maximum luminosity in the process. Within lighting operation, the light sources are not controllable by the cooktop controller but can only be controlled by the light controller in an illumination lighting mode, wherein to this end the light controller receives the corresponding commands for the light sources from an external control apparatus by way of a communications device. In this case, a luminosity of the light sources can be maximal.
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公开(公告)号：US20210385912A1
公开(公告)日：2021-12-09
申请号：US17303557
申请日：2021-06-02
摘要： A method for operating an induction hob (100), wherein the induction hob (100) comprises: an inverter (1), which is supplied with a supply voltage (US), at least one capacitor (2, 3), and an induction heating coil (4), wherein the at least one capacitor (2, 3) and the induction heating coil (4) are interconnected such that they constitute an oscillating circuit (5), and wherein the inverter (1) is configured to generate a pulse-width modulated excitation voltage (UA) for the oscillating circuit (5) from the supply voltage (US), wherein the method comprises the following steps: a) generation of the pulse-width modulated excitation voltage (UA) having a predefined voltage characteristic, b) measurement of a resulting oscillating circuit current (iS), particularly by means of the induction heating coil (4), c) determination of electrical oscillating circuit parameters, according to the voltage characteristic of the pulse-width modulated excitation voltage (UA) and the measured oscillating circuit current (iS), d) n-times repetition of steps a) to c) using a different voltage characteristic of the excitation voltage (UA) for the determination of electrical voltage characteristic-dependent oscillating circuit parameters, and e) determination of operating variables of the induction hob (100) from voltage characteristic-dependent electrical oscillating circuit parameters.
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公开(公告)号：US11699924B2
公开(公告)日：2023-07-11
申请号：US17590048
申请日：2022-02-01
摘要： Method for operating an apparatus for wirelessly transferring energy in the direction of an electrical consumer by means of inductive coupling, wherein the apparatus comprises:
a rectifier for generating a DC voltage from a power supply system voltage,
an inverter fed from the DC voltage and configured to generate a pulse-width-modulated drive signal, and
a coil driven by means of the pulse-width-modulated drive signal, by means of which coil an alternating magnetic field is generatable for the purpose of transferring the energy,
wherein the method comprises the following steps:
controlling an electrical actual power output by the inverter to a predefinable electrical target power, wherein a frequency and a duty cycle of the pulse-width-modulated drive signal serve as manipulated variables of the control,
wherein the following steps are carried out for the purpose of adjustment to the target power:
a) setting a start frequency (f_0),
b) setting a start duty cycle (DC_1) in such a way that the target power is undershot,
c) measuring an electrical actual power output by the inverter in the case of the start frequency (f_0) set and the start duty cycle (DC_1) set,
d) choosing an adjustment target power which is less than or equal to the target power,
e) calculating a duty cycle (DC_2) which computationally corresponds to the adjustment target power,
f) setting the calculated duty cycle (DC_2),
g) measuring an electrical actual power output by the inverter in the case of the frequency (f_0) set and the duty cycle (DC_2) set, and
h) repeating steps d) to g) with increasing adjustment target power until a deviation between the target power and the actual power falls below a predefined threshold.-
公开(公告)号：US20220255355A1
公开(公告)日：2022-08-11
申请号：US17590048
申请日：2022-02-01
摘要： Method for operating an apparatus for wirelessly transferring energy in the direction of an electrical consumer by means of inductive coupling, wherein the apparatus comprises: a rectifier for generating a DC voltage from a power supply system voltage, an inverter fed from the DC voltage and configured to generate a pulse-width-modulated drive signal, and a coil driven by means of the pulse-width-modulated drive signal, by means of which coil an alternating magnetic field is generatable for the purpose of transferring the energy, wherein the method comprises the following steps: controlling an electrical actual power output by the inverter to a predefinable electrical target power, wherein a frequency and a duty cycle of the pulse-width-modulated drive signal serve as manipulated variables of the control, wherein the following steps are carried out for the purpose of adjustment to the target power: a) setting a start frequency (f_0), b) setting a start duty cycle (DC_1) in such a way that the target power is undershot, c) measuring an electrical actual power output by the inverter in the case of the start frequency (f_0) set and the start duty cycle (DC_1) set, d) choosing an adjustment target power which is less than or equal to the target power, e) calculating a duty cycle (DC_2) which computationally corresponds to the adjustment target power, f) setting the calculated duty cycle (DC_2), g) measuring an electrical actual power output by the inverter in the case of the frequency (f_0) set and the duty cycle (DC_2) set, and h) repeating steps d) to g) with increasing adjustment target power until a deviation between the target power and the actual power falls below a predefined threshold.
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6.发明公开公开(公告)号：US20240120774A1
公开(公告)日：2024-04-11
申请号：US18474430
申请日：2023-09-26
CPC分类号： H02J50/10 , H05B6/1236
摘要： A device (100) for wirelessly transferring power toward a consumer (200) by way of inductive coupling, wherein the device (100) has:
a rectifier (101) for generating a DC voltage (UG) from a line voltage (UN),
an inverter (102) which is configured to generate a pulse-width-modulated drive signal (AS), and
a power coil (103) driven by way of the pulse-width-modulated drive signal (AS), which power coil can generate an alternating magnetic field for power transfer and for measurement purposes,
wherein, in a first operating mode, the inverter (102) is configured to generate the pulse-width-modulated drive signal (AS) for power transfer as a function of the DC voltage (UG), and
wherein, in a second operating mode, the inverter is configured to generate the pulse-width-modulated drive signal (AS) for measurement purposes depending on a measurement voltage (UM), wherein the DC voltage (UG) is greater than the measurement voltage (UM) during the second operating mode.-
公开(公告)号：US20230389139A1
公开(公告)日：2023-11-30
申请号：US18323519
申请日：2023-05-25
CPC分类号： H05B6/1209 , H01Q1/22 , G01V11/002
摘要： An induction cooktop comprising a cooktop plate and a planar and flat support structure has a flexible woven fabric as a support on which antennas and/or sensors are mounted as lines by means of embroidering processes. The antennas and/or sensors have feed lines, which are mounted and/or secured on the support by means of embroidering processes and cross one another and other lines on the same surface of the support, wherein they are electrically insulated from one another. The support structure has a thermal stability of ≥200° C. It is arranged on a planar and flat retainer and, together with antennas and/or sensors, is pressed against an underside of the cooktop plate by said retainer.
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公开(公告)号：US20230021823A1
公开(公告)日：2023-01-26
申请号：US17813655
申请日：2022-07-20
摘要： Method for operating a kitchen appliance (100), the kitchen appliance (100) having: a rectifier (1) for producing a DC voltage (UG) from a grid voltage (UN), a first inverter (2) which is powered by the DC voltage (UG) and which is designed to generate a first control signal (AS1) having a first frequency (f1), a first coil (3) which is controlled by means of the first control signal (AS1) and by means of which an alternating magnetic field is able to be generated for heating a cooking vessel (4) and/or for transferring energy in the direction of an electrical load (5) by means of inductive coupling, a second inverter (6) which is powered by the DC voltage (UG) and which is designed to generate a second control signal (AS2) having a second frequency (f2), and a second coil (7) which is controlled by means of the second control signal (AS2) and by means of which an alternating magnetic field is able to be generated for heating a cooking vessel (8) and/or for transferring energy in the direction of an electrical load (9) by means of inductive coupling, the method having the step of: controlling the first inverter (2) and the second inverter (6) in such a way that the first frequency (f1) and the second frequency (f2) are dependent on each other.
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公开(公告)号：US12057709B2
公开(公告)日：2024-08-06
申请号：US18046578
申请日：2022-10-14
CPC分类号： H02J50/10 , H02J50/80 , H02J2207/20
摘要： A method for operating a system having a device for the wireless transmission of energy to an electrical consumer by means of inductive coupling, and an electrical consumer, wherein the device has: a rectifier for generating a DC voltage from a line voltage, an inverter which is fed from the DC voltage and designed to generate a pulse-width-modulated activation signal, a power coil activated by the pulse-width-modulated activation signal, by means of which an alternating magnetic field can be generated to transmit the energy, a communication device designed to exchange data bi-directionally with the electrical consumer, and a regulator designed to regulate a power output by the inverter to a predetermined setpoint, and wherein the electrical consumer has: a switching device for changing the load impedance of the electrical consumer, and a communication device designed to exchange data bi-directionally with the device, wherein the method comprises the steps: synchronizing the operation of the device and the operation of the electrical consumer in such a way that, during a change in the load impedance of the electrical consumer, a transition frequency and/or a transition duty cycle of the pulse-width-modulated activation signal is/are set in such a way that voltages and/or currents induced in the electrical consumer do not exceed and/or fall below specified threshold values.
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公开(公告)号：US11936203B2
公开(公告)日：2024-03-19
申请号：US18050596
申请日：2022-10-28
摘要： A method is provided for operating a device for wireless transfer of energy in the direction of an electrical consumer via inductive coupling. The method involves sequentially carrying out a power transfer, a data exchange, a measurement of setup parameters, and a measurement of a resonance frequency, wherein during the power transfer, an electrical actual power emitted by an inverter is regulated to a predetermined electrical setpoint value, wherein during the data exchange, data are exchanged between the device and the electrical consumer via a communication unit, wherein during the measurement of the setup parameters, objects possibly arranged over a power coil are detected, wherein during the measurement of the resonance frequency, a resonance frequency of a resonant circuit having the power coil is ascertained, and wherein the measurement of the resonance frequency is executed immediately before or immediately after the measurement of the setup parameters or the data exchange.
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