Electrolux Home Products Corporation N.v.

Erik Svend Christiansen

Laurent Jeanneteau

Massimo Zangoli

Thibaut Rigolle

Mario Barocci

Alex Viroli

Michael Herzog

Roberto Ferrozzi

Thibaut Rogolle

A method for dynamic wave form correction includes providing an input power signal by an AC power source and rectifying the input power signal by a frequency converter into a half waves signal whose half wave is delimited by two subsequent zero-crossings. The time lag between the two zero-crossings defines a half wave duration. The frequency converter converts the half waves signal into a working current signal for supplying an induction heating device. In a frequency shifting operation, the frequency of the working signal is first increased from a first base frequency to a maximum frequency, and is then decreased to a second base frequency different from the first base frequency within a time period smaller than the half wave duration. A zero crossing of the half wave signal is passed within the frequency shifting operation. An arrangement for dynamic wave form correction of a power supply is also provided.

Method and arrangement for dynamic wave form correction

The invention relates to a cooking device () for a cooking container (), a) wherein the cooking device () comprises at its lower surface () a curved, especially concave, cooking surface () adapted to the form of the cooking container (), b) wherein the cooking surface () comprises a first () and a second () partial surface, c) wherein the cooking container () comprises a first area () adjacent to the first partial surface () and a second area () adjacent to the second partial surface (), d) wherein the first area () is heated by a first induction element () and the second area () is heated by a second induction element (), e) wherein each induction element () comprises an individual heat sensor () and f) wherein at least the second induction element () can be controlled independently from the first induction element ().

Cooking device for a cooking container

The present invention relates to a method for controlling a cooking device, in particular an induction hob. The method comprises the steps of activating an overload power (P) for at least one electric or electronic component of the cooking device by using at least two synchronized generators, which overload power (P) is greater than a standard maximum power (P), deactivating the overload power (P) after a predetermined period (&#x394;t), and operating the cooking device at a power (P), which is at most the standard maximum power (P). The standard maximum power (P) is provided for a permanent operation of the cooking device. The overload power (P) and/or the period (&#x394;t) are determined by a function depending on at least the overload power (P) and the period (&#x394;t). The present invention relates further to a corresponding apparatus for controlling a cooking device, in particular an induction hob.

Method and apparatus for controlling a cooking device, in particular an induction hob

The present invention relates to a detection circuit for detecting that a power supply unit is connected to a wrong supply voltage. Said detection circuit comprises a first voltage divider () connected to the output terminals () of a rectifier () of the power supply unit, a second voltage divider () connected to a first power input terminal () of the power supply unit and to one of the output terminals () of the rectifier (), and a circuit breaker () connected to the first power input terminal () of the power supply unit and to an input terminal of the rectifier (), wherein at least one partial voltage of each voltage divider () is used a signal () for identifying the wrong supply voltage. The invention relates further to a method for detecting that a power supply unit is connected to a wrong supply voltage.

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Faenza, Italy

Erik Svend Christiansen