INDUCTION HOB AND METHOD FOR OPERATING AN INDUCTION HOB

    公开(公告)号:EP3534673A1

    公开(公告)日:2019-09-04

    申请号:EP18159692.5

    申请日:2018-03-02

    IPC分类号: H05B6/06

    摘要: The invention relates to an induction hob comprising a circuitry (1a) for powering at least one induction coil (6), the circuitry (1a) comprising a power circuit portion (7) with at least one switching element (4, 5) adapted to provide pulsed electric power to said induction coil (6) and an oscillating circuit portion (9) comprising at least one resonance capacitor (9.1, 9.2) which is associated with a resonance capacitor voltage, said induction coil (6) being electrically coupled with said power circuit portion (7) and said oscillating circuit portion (9), wherein said induction hob comprises a control entity (10), said control entity (10) being configured to provide and/or receive resonance capacitor information, specifically, sampled resonance capacitor voltage values, applying a discrete mathematical transformation to the resonance capacitor information thereby obtaining modified resonance capacitor information, said control entity (10) being further configured to calculate first and second electrical information related to the induction coil (6), specifically information regarding the amplitude of the electric current (Ic) provided through said induction coil (6) and information regarding the phase delay between the electric current (Ic) provided through said induction coil (6) and the voltage applied to the induction coil (6) based on said modified resonance capacitor information.

    SMART PLUG AND METHOD FOR DETERMINING OPERATING INFORMATION OF A HOUSEHOLD APPLIANCE BY A SMART PLUG

    公开(公告)号:EP3618223A1

    公开(公告)日:2020-03-04

    申请号:EP18192089.3

    申请日:2018-08-31

    IPC分类号: H02J13/00 H01R13/66

    摘要: Smart plug (3) designed to electrically connect a household appliance (2) to power lines (L). The smart plug (2) comprising electronic controller configured to measure current and voltage of the electric power supplied to household appliance (2) via a smart plug (3), determine electric quantities indicative at least of prefixed current harmonics and/or prefixed voltage harmonics, based on said measured current and voltage, determine load information which are indicative of electric loads of the household appliance (2) being activated during an operating cycle performed by household appliance (2), based on determined electric quantities; determine the operating cycle performed by the household appliance (2) based on the load information, communicate determined operating cycle to a network system (5).

    INVERTER BASED APPARATUS AND CONTROL METHOD THEREOF

    公开(公告)号:EP3599708A1

    公开(公告)日:2020-01-29

    申请号:EP18185870.5

    申请日:2018-07-26

    IPC分类号: H02M1/32 H02M5/458 H02P3/18

    摘要: Inverter-based apparatus (1) configured to control an electric motor (2), the inverter-based apparatus comprising: an input stage (4) configured to convert an alternating voltage AC to a rectified DC voltage; an electrolytic-capacitor-less inverter (5) configured to generate an AC voltage to be fed to said electric motor (2) based on duty cycles of switching signals; a DC-link (10) connecting said electrolytic-capacitor-less inverter (5) to the input stage (4) and crossed by an instantaneous active power (P(t)) from, or towards, said electrolytic-capacitor-less inverter (5); a DC-link capacitor (11) connected to said DC-link (10); voltage sensor (13) configured to determine the amplitude of said DC-link capacitor voltage (Vdc(t)); current sensors (12) configured to determine the amplitude of output currents applied to said electric motor (2) by said electrolytic-capacitor-less inverter (5); a current regulator system (14) configured to control said duty cycles based on determined current references ( idref, iqref ); and an active voltage limiter unit (15) configured in order to determine an active current ( ia )( iaref ) associated to the instantaneous active power (P(t)) absorbed from, or supplied back, said DC-link (10), and regulate said current references ( idref, iqref ) based on said active current ( ia )( iaref ) .

    INDUCTION HOB AND METHOD FOR OPERATING AN INDUCTION HOB

    公开(公告)号:EP3405004A1

    公开(公告)日:2018-11-21

    申请号:EP17170974.4

    申请日:2017-05-15

    IPC分类号: H05B6/06

    CPC分类号: H05B6/062

    摘要: The invention relates to an induction hob comprising a circuitry (1a) for powering at least one induction coil (6), the circuitry (1a) comprising a power circuit portion (7) with at least one switching element (4, 5) adapted to provide pulsed electric power to said induction coil (6) and an oscillating circuit portion (9), said induction coil (6) being electrically coupled with said power circuit portion (7) and said oscillating circuit (9), wherein said induction hob comprises a control entity (10), said control entity (10) being configured to receive first information correlated with a first voltage provided at said power circuit portion (7) and second information correlated with a second voltage correlated with said oscillating circuit (9), said control entity (10) being further configured to calculate information regarding a peak value and a power factor of the electric current provided through said induction coil (6) based on said received first and second information.