Koninklijke Philips Corporation N.v.

Philips Lighting Holding B.v.

U.S. Philips Corporation

Nxp B.v.

Signify Holding B.v.

Philips Intellectual Property & Standards Gmbh

Peter Luerkens

Carsten Deppe

Matthias Wendt

Christoph Loef

Ulrich Boeke

Albert Garcia Tormo

Bernd Ackermann

Thomas Duerbaum

Thomas Scheel

Joseph Hendrik Anna Maria Jacobs

Christian Hattrup

Hendrik Huisman

Harald Josef Günther Radermacher

Eberhard Waffenschmidt

Maurice Herman Johan Draaijer

Pieter Gerrit Blanken

Wilhelmus Hinderikus Maria Langeslag

Jeroen Hubert Christoffel Jacobus Stessen

Georg Sauerlaender

Heinz Willi Van Der Broeck

Adrianus Johannes Stephanes Maria De Vaan

Nebojsa Fisekovic

Chenyang Liu

Holger Moench

Gerardus Johannes Josephus Vanlier

Hendrikus Wilhelmus Leonardus Antonius Maria Van Lierop

Adrianus J Frensch

Antoon Joseph Bock

Franciscus Johannes Stommels

Juergen Halfmann

Ulf Mueter

Joseph Gertrudis Leonardus Otten

Raul Duran

Henricus Wilhelmus Johannes Van Den Wildenberg

The invention relates to a management unit () and a method for operating such a unit in a Power-over-Ethernet (PoE) installation. The management unit () comprises at least one first port () to which an external device () can be connected, and it is adapted to control the power delivered at a first port () in dependence on predetermined switching rules.

Management of power-over-ethernet installation

The present invention relates to a ceramic substrate () comprising: a front side (-), which comprises: i) a power semiconductor (--); and ii) a first metallic layer () comprising at least one first metallic plane contact (--), which is configured to connect the power semiconductor (--) to a first terminal (--) on an edge (-) of the ceramic substrate (); a back side (-), which comprises: i) a capacitor () which is attached to a ii) second metallic layer () comprising at least one second metallic plane contact (--), which is configured to connect the capacitor () to a second terminal (--) on the edge (-) of the ceramic substrate (); and a metallic frame (), which is configured to connect the first metallic layer () to the second metallic layer ().

Ceramic substrate and method for producing a ceramic substrate

The present invention relates to a device () for controlling a power converter (), the device () comprising: a sensor module (), which is configured to measure an inductor current (i_L) through an inductor of the power converter (); a compensation module (), which is configured to generate a compensation waveform (i_c); and an operating module (), which is configured to provide a continuous conduction mode current signal (i_CCM) based on the compensation waveform (i_c) and of the inductor current (i_L) and which is configured to control the power converter () based on the provided continuous conduction mode current signal (i_CCM).

Device and method for processing an inductor current

The present invention relates to a device () for estimating an average value of an inductor current for switched-mode power converters (), the device () comprising: a sensor (), which is configured to measure an inductor voltage (v_L) and an inductor current (i_L); a ripple-suppressor (), which is configured to provide an estimated inductor current ripple (EIR) based on the measured inductor voltage (v_L); and a current-corrector (), which is configured to provide a corrected inductor current (i_Lc) based on the estimated inductor current ripple (EIR) and the measured inductor current (i_L).

Estimating an average value of an inductor current for switched-mode power converters

Pre-conditioners (or line-conditioners) are used to convert electrical power having first characteristics into electrical power having second characteristics. For example, a pre-conditioner may connect electrical equipment forming a load, which requiring only a conventional mains supply level to a utility three-phase supply. This means that the power components of the load may be de-rated, making the load electrical equipment cheaper. Such circuits may be further improved. Components in the down-converter itself still need to be rated to interface with the higher voltage. An approach is proposed in which two interleaved down-converters () can be used to supply voltages. An energy recovery element () connects snubbers of the interleaved down-converters, thus enabling some de-rating of the pre-conditioner circuitry.

DC to DC converter

Described is a management unit () and a method for operating such a unit in a Power-over-Ethernet (PoE) installation. The management unit () comprises at least one first port () to which an external device () can be connected, and it is adapted to control the power delivered at a first port () in dependence on predetermined switching rules.

The invention is directed to a voltage rectifier () comprising at least two diode arrays () each comprising plural diodes () connected in series. The diode arrays are arranged in an enclosure (). The diode arrays are arranged in a special arrangement for providing an even distribution of a field strength. According to an embodiment and with respect to the figures, the vertical distance between an enclosure () and the diode arrays () increases when horizontally distancing from the direct current terminals. Further, the invention provides a voltage generator () and a voltage rectifier () having such a voltage rectifier.

Voltage rectifier with specific diode arrangement

A Power-over-Ethernet (PoE) device () for use in a PoE system is described. The PoE device () comprising a first PoE port () for connecting the device to an upstream PoE device or a central control unit, a second PoE port () for connecting the device to a downstream device or PoE device and a control unit () for controlling data () and/or power communication () between the first () and second () PoE port. The control unit () further comprises a first power input terminal () connected to the first PoE port () to receive electrical power () for powering the control unit ().

Cascaded power-over-ethernet system

The invention relates to an AC/DC converter circuit () and a method for converting N&#x2267;2 AC supply voltages (U, U, U) into DC voltage. This is achieved by feeding the AC supply voltages to first terminals (a, a, a) of full bridge converters (), wherein the second terminals (b, b, b) of these rectifiers are coupled to each other. The outputs (d, d', d, d&#x2032;, d, d&#x2032;) of the rectifiers are fed to the DC terminals of intermediate converters (). The AC terminals (e, e&#x2032;, e, e&#x2032;, e, e&#x2032;) of the intermediate converters are connected to the primary sides of transformers (), wherein the secondary sides of these transformers are provided to further rectifiers (). The circuit design allows using MosFETs of limited voltage capability for processing 380 V three-phase AC current, thus achieving a high efficiency.

AC/DC converter circuit for common three-phase AC input voltages and method of operating such converter circuit

A voltage multipliercomprises a series of multiplier stages. Each multiplier stage, for example, comprises a first input, a second input, a first outputand second output. The first and second outputs of a preceding multiplier stage are interconnected with first and second inputs of a subsequent multiplier stage. Furthermore, each multiplier stages, for example, comprises two series connected diode elements D, Dhaving the same current conducting direction. The two series connected diode elements D, Dinterconnect the first inputand the first output. The second outputis coupled between the two series connected diode elements D, D. Each multiplier stage, for example, comprises a buffer capacitor Cinterconnecting the respective first inputand the respective first output. At least some multiplier stages, for example, comprise a push-pull capacitor Cinterconnecting the respective second inputand the respective second output. The first inputof a first multiplier stageand the first outputof a last multiplier stageprovide outputs for a load. The second inputof the first multiplier stageprovides an input for an AC voltage source. The buffer capacitor Cof the first multiplier stagecomprises two series connected buffer capacitor parts C, C. An inputfor the AC voltage sourceis provided between the two buffer capacitor parts C, C

Voltage multiplier

The present invention relates to a bidirectional semiconductor switch (M, M) with extremely low control power consumption and a bootstrap circuit which allows reliable start of operation of the switch and the hosting device after unlimited duration of mains interruptions. Intelligent control options are provided by operating from a small energy storage and no extra means are required to recover from a depleted energy storage condition. The absence of audible noise and mechanical wear also enables more frequent recharging cycles and allows smaller and thus cheaper energy storage components.

Semiconductor switch with reliable blackout behavior and low control power

A power supply unit for an X-ray radiation source () comprises a high voltage generator () for providing a basic current for the operation of an X-ray tube (), a waveform generator () and a pulse transformer () for providing superposable voltage peaks and a control unit () for generating a counterbalance at an input () of the pulse transformer () to prevent saturation effects. Providing different reference waveform patterns lead to the prevention of overshooting and ringing.

Power supply unit for an X-ray tube

An imaging system () includes a stationary gantry () and a rotating gantry (). The rotating gantry () includes a first component () supplied with first power and a second component supplied with second power, wherein the first and second power are different. A contactless power chain () includes a first transformer () for transferring the first power from the stationary gantry () to the rotating gantry () and a second transformer () for transferring the second power from the stationary gantry () to the rotating gantry (). The first and second transformers () are shifted relative to each other along the longitudinal axis () by a pre-determined finite non-zero distance (). In another embodiment, an imaging system () includes a stationary gantry () and a rotating gantry () that rotates about a longitudinal axis (). A contactless power chain () transfers power from the stationary gantry () to the rotating gantry (), wherein windings () of the contactless power chain () are carried by a non-resin based carrier ().

Contactless power chain

A method and a control device control a switching device for providing a resonant circuit with a switching voltage for generating a resonant current in order to provide a required output power at an output of a resonant power converter.

Method for controlling a switching device of a resonant power converter, especially in order to provide a required power, especially for an X-ray generator

A DC/AC power inverter control unit of a resonant-type power converter circuit (), in particular a DC/DC converter, for supplying an output power for use in a high-voltage generator circuitry of an X-ray radiographic imaging system, a 3D rotational angiography device, or X-ray computed tomography device, comprises an interphase transformer () connected in series to at least one series resonant tank circuit (and' orand&#x2032;) at the output of two DC/AC power inverter stages () supplying a multi-primary winding high-voltage transformer (). The interphase transformer () removes a difference (&#x394;I) in resonant output currents and (Iand I) of the DC/AC power inverter stages (). In addition, a control method is disclosed which assures that the interphase transformer () is not saturated. Furthermore, the control method ensures zero current operation and provides for minimized input power losses.

DC/AC power inverter control unit of a resonant power converter circuit, in particular a DC/DC converter for use in a high-voltage generator circuitry of a modern computed tomography device or X-ray radiographic system

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Aachen, Germany

Peter Luerkens