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公开(公告)号：DE102005045569A1
公开(公告)日：2006-12-07
申请号：DE102005045569
申请日：2005-09-23
Applicant: FRAUNHOFER GES FORSCHUNG , PHILIPS INTELLECTUAL PROPERTY
Inventor： KLEIN JUERGEN , SEIWERT STEFAN , PROBST SVEN , LOEF CHRISTOPH , NEFF WILLI
Abstract: The device has a direct current voltage source for supplying an input voltage, and a resonance circuit including an inductor and a charge capacitor (6). An output voltage is tapped at the capacitor over an output of the device, and a pole of the voltage source is connected with the resonance circuit over a switch (2). A digital controller (20) calculates switching time of the switch for observation of reference values in real time depending on inputs values and the reference values, and controls the switch to the calculated switching time for switching.
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公开(公告)号：DE50207365D1
公开(公告)日：2006-08-10
申请号：DE50207365
申请日：2002-08-08
Inventor： LOEF CHRISTOPH , DUERBAUM THOMAS , WAFFENSCHMIDT EBERHARD , WENDT MATHIAS , VAN DER BROECK HEINZ DR , ALBACH MANFRED PROF DR
Abstract: The mains supply device has an active mains network filter (1) without galvanic separation, for providing a constant DC voltage from the mains network voltage, its output fed to a DC voltage converter (4) with galvanic separation between the constant DC voltage and the voltage converter outputs (6,7). A regulator (5) provides regulation of the reference voltage provided at one voltage converter output, the second voltage converter output coupled to a voltage setting device (11).
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公开(公告)号：DE59812190D1
公开(公告)日：2004-12-09
申请号：DE59812190
申请日：1998-03-06
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： LOEF CHRISTOPH
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公开(公告)号：DE10159897A1
公开(公告)日：2003-06-26
申请号：DE10159897
申请日：2001-12-06
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： LOEF CHRISTOPH , LUNDING ARNE , OSTERHOLZ HEIKO , BROEK HEINZ VAN DER
IPC: A61B6/03 , H02M3/28 , H02M3/335 , H02M7/10 , H05G1/12 , H02M7/48 , H02M7/515 , H02M7/523 , H05G1/20
Abstract: A power supply for X-ray generators which includes at least one inverter ( 11, 12, 13 ), at least one transformer ( 111, 121, 131 ) and at least one voltage cascade ( 112, 122, 132 ) for generating a supply voltage for an X-ray tube ( 15 ). In order to increase the output power that can be achieved with a comparatively small weight and a low ripple or output capacitance, the voltage cascade is conceived in respect of its capacitances and the stray inductance of the transformers ( 111, 121, 131 ) in such a manner that it can be made to operate in the resonance mode by appropriate control of the inverter. In respect of the properties mentioned it is notably advantageous to integrate a two-phase embodiment or three-phase embodiment with an X-ray system so as to form a compact tank generator.
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公开(公告)号：ES2379293T3
公开(公告)日：2012-04-24
申请号：ES07826191
申请日：2007-08-29
Inventor： LOEF CHRISTOPH , WENDT MATTHIAS
Abstract: Dispositivo de suministro de potencia para suministrar potencia a cargas (60), preferiblemente LED, que comprende - un primer conjunto (12) de circuitos con una unidad (24) de inversor adaptada para proporcionar una tensión de CA, preferiblemente una tensión rectangular, y circuitos (30.1 - 30.3) resonantes conectados en paralelo entre sí, comprendiendo cada circuito (30.1 -30.3) resonante el lado (20) primario de un transformador (18.1 - 18.3), una capacitancia (32) y una inductancia (34), - un segundo conjunto (14) de circuitos que comprende derivaciones (50, 52, 54) cada una con una unidad (42) rectificadora, un conmutador (64) y una carga (60), estando adaptado dicho conmutador (64) para encender y apagar dicha carga (60), estando conectado el lado (22) secundario de cada transformador (18.1 - 18.3) con una única derivación (50, 52, 54) del segundo conjunto (14) de circuitos, de manera que los conjuntos (12, 14) de circuitos primero y segundo están aislados de manera galvánica, y - una unidad (16) controladora adaptada para controlar dichos conmutadores (64) de dicho segundo conjunto (14) de circuitos en cuanto a ajustar la potencia proporcionada a dichas cargas (60) sin ninguna señal de medición de dicho primer conjunto (12) de circuitos.
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Patent Agency Ranking
公开(公告)号：DE10217481A1
公开(公告)日：2003-09-04
申请号：DE10217481
申请日：2002-04-19
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： DUERBAUM THOMAS , LOEF CHRISTOPH , DEPPE CARSTEN
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公开(公告)号：DE50211871D1
公开(公告)日：2008-04-24
申请号：DE50211871
申请日：2002-05-14
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： LOEF CHRISTOPH , HATTRUP CHRISTIAN , SCHEEL THOMAS , MAERTENS OLAF , OSSMANN MARTIN
Abstract: A voltage changer (VC) (12) generates a wired VC output voltage (Uw). A transformer (14) fed on its primary side by the VC connects a load output (24) to its secondary side. A resonance capacitor (Cr) forms a resonance layout with leakage inductance for the transformer and/or an external inductance. A test device (16) determines operating parameters for a power supply system. A current sensor (22) measures current (ir) on the primary side of the transformer. An Independent claim is also included for a method for determining operating parameters for a power supply system.
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公开(公告)号：DE59510860D1
公开(公告)日：2004-03-25
申请号：DE59510860
申请日：1995-11-29
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： VAN DER BROECK DR ING , LOEF CHRISTOPH , NEGLE HANS , WAGNER BERNHARD , WIMMER MARTIN
Abstract: The power supply stage is used to supply the X-ray tube (4) via a HV transformer (3) with 2 groups of primary and secondary windings (16, 31; 26, 32) which are wound on the same transformer core. The coupling factor between the primary windings (16, 26) of the different winding groups is less than the coupling factor between the primary and secondary windings of the same winding group. Each of the primary windings is coupled to a respective current regulator (1, 2) with a fixed operating frequency and an individually regulated pulse ratio, providing overlapping voltage pulses.
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公开(公告)号：AU2003207377A8
公开(公告)日：2003-09-09
申请号：AU2003207377
申请日：2003-02-21
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： DEPPE CARSTEN , DURBAUM THOMAS , LOEF CHRISTOPH
Abstract: In the case of known switched-mode power supplies with integrated preconditioner, the control curves are largely congruent, but deviate from one another in low-load operation, whereby the unregulated intermediate circuit voltage increases. To improve efficiency in low-load operation, closed-loop control of the burst cycle is effected on the primary side of the voltage transformer. The intermediate circuit voltage is limited to a permissible limit value. The closed-loop control device in the switching stage taps the intermediate circuit voltage at a voltage divider which is arranged between the preconditioner functional unit and the switching stage. An assembly additionally monitors the output voltage, for example by means of an optocoupler. Burst mode comprises one or more burst cycles. A burst cycle is started when the intermediate circuit voltage reaches its limit value. At this time, the voltage transformer is switched off. A burst cycle ends when the output voltage reaches a minimum value. At this time at the latest, the voltage transformer is switched on again. Burst mode is terminated again either when the switched-mode power supply is again operated under normal load or when a maximum time has elapsed, measured from the start of burst mode.
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公开(公告)号：AU2003207377A1
公开(公告)日：2003-09-09
申请号：AU2003207377
申请日：2003-02-21
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： LOEF CHRISTOPH , DEPPE CARSTEN , DURBAUM THOMAS
Abstract: In the case of known switched-mode power supplies with integrated preconditioner, the control curves are largely congruent, but deviate from one another in low-load operation, whereby the unregulated intermediate circuit voltage increases. To improve efficiency in low-load operation, closed-loop control of the burst cycle is effected on the primary side of the voltage transformer. The intermediate circuit voltage is limited to a permissible limit value. The closed-loop control device in the switching stage taps the intermediate circuit voltage at a voltage divider which is arranged between the preconditioner functional unit and the switching stage. An assembly additionally monitors the output voltage, for example by means of an optocoupler. Burst mode comprises one or more burst cycles. A burst cycle is started when the intermediate circuit voltage reaches its limit value. At this time, the voltage transformer is switched off. A burst cycle ends when the output voltage reaches a minimum value. At this time at the latest, the voltage transformer is switched on again. Burst mode is terminated again either when the switched-mode power supply is again operated under normal load or when a maximum time has elapsed, measured from the start of burst mode.
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