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1. 发明申请

WO2021252091A1 PRECISION HIGH VOLTAGE POWER SUPPLY WITH DUAL FEEDBACK LOOP 审中-公开
公开(公告)号：WO2021252091A1
公开(公告)日：2021-12-16
申请号：PCT/US2021/029466
申请日：2021-04-27
申请人： AGILENT TECHNOLOGIES, INC.
发明人： DEFORD, David
IPC分类号： H02M1/00 , H02M3/335 , H03M1/66 , H01J49/022 , H02M1/0003 , H02M1/0025 , H02M1/08 , H02M3/33515 , H02M3/33592 , H03M1/1009 , H03M1/68
摘要： A high-voltage (HV) power supply outputs an output voltage based on a control signal produced by a dual analog/digital feedback loop. The control signal is determined at least in part by an error amplifier that receives a measurement signal, proportionally attenuated from the output voltage, and a digital-to-analog converter (DAC) output signal. An analog-to-digital converter (ADC) also receives the measurement signal and transmits it in digitized form to a digital processor. The digital processor calculates a digital DAC data signal based on the measurement signal, and on a digital set-point input signal corresponding to a set-point voltage value of the output voltage desired to be outputted from the high-voltage source. A DAC receives the DAC data signal and converts it to the DAC output signal transmitted to the error amplifier.

2. 发明申请

WO2021139700A1 INDUCTOR CURRENT BASED MODE CONTROL FOR CONVERTER CIRCUIT 审中-公开
公开(公告)号：WO2021139700A1
公开(公告)日：2021-07-15
申请号：PCT/CN2021/070528
申请日：2021-01-06
申请人： SHENZHEN GOODIX TECHNOLOGY CO., LTD.
发明人： YAZDI, Siavash , NALOUSI, Esmail, Babakrpur , EMIRA, Ahmed
IPC分类号： H02M3/155 , H02M1/0009 , H02M1/0025 , H02M1/0032 , H02M3/156 , H02M3/158
摘要： A converter circuit includes a pull up component, a pull down component, and a controller configured to operate the pull up component and the pull down component so as to deliver power to a load. The controller is configured to operate the pull up and pull down components in first and second operational modes, based on an average current delivered to the load. The converter circuit also includes a mode control circuit to generate a mode control signal based in part on a representation of a peak current received at the switch node from the pull up component.

3. 发明申请

WO2022207571A1 TITRE : CONVERTISSEUR DE TENSION ISOLÉ 审中-公开
公开(公告)号：WO2022207571A1
公开(公告)日：2022-10-06
申请号：PCT/EP2022/058161
申请日：2022-03-28
申请人： VALEO SIEMENS EAUTOMOTIVE FRANCE SAS
发明人： MOREAU, Maxime , DIALLO, Massourang , DA CUNHA ALVES, Wendell
IPC分类号： H02M1/00 , H02M3/335 , H02M3/158 , H02M1/0016 , H02M1/0025 , H02M1/0043 , H02M1/007 , H02M3/1586 , H02M3/33571
摘要： Ce convertisseur de tension isolé (106) comporte : - des première et deuxième bornes d'entrée globales (P, N) destinées à recevoir entre elles une tension d'entrée globale (VE); et - un premier et un deuxième modules de conversion de tension (1081, 1082) chacun avec un circuit primaire et un circuit secondaire isolés reliés par un circuit magnétique, les circuits primaires étant connectés en série entre les bornes d'entrée globales (P, N) pour recevoir chacun, comme tension d'entrée locale (VE1, VE2), une partie seulement de la tension d'entrée globale (VE). Il comporte en outre un dispositif (118) de régulation des tensions d'entrée locales (VE1, VE2) pour les maintenir dans un ratio prédéfini, par exemple pour les maintenir égales l'une à l'autre.

4. 发明申请

WO2021202729A1 POWER CONVERTER CIRCUIT FOR A LIGHTING DEVICE 审中-公开
公开(公告)号：WO2021202729A1
公开(公告)日：2021-10-07
申请号：PCT/US2021/025169
申请日：2021-03-31
申请人： LUTRON TECHNOLOGY COMPANY LLC
发明人： BOCOCK, Ryan M. , BROGAN, Quinn
IPC分类号： H05B45/385 , H02M3/335 , H02M1/0025 , H02M1/0032 , H02M1/4258 , H05B45/375
摘要： A power converter circuit includes a control circuit configured to generate a drive signal for rendering a semiconductor switch conductive and non-conductive to generate a bus voltage across a bus capacitor. The control circuit adjusts a minimum operating period of the drive signal to a first value when an output power of the power converter circuit is greater than a first threshold and to a second value when the output power is less than a second threshold. The control circuit may comprise a comparator that generates the drive signal in response to a sense voltage and a threshold voltage. When operating in a standby mode, the control circuit may adjust a magnitude of the threshold voltage based on an instantaneous magnitude of an alternating-current line voltage received by the power converter circuit, such that an input current drawn by the power converter circuit is sinusoidal.

5. 发明申请

WO2022268914A1 REGELVORRICHTUNG FÜR EINEN STROMRICHTER, STROMRICHTERANORDNUNG UND VERFAHREN ZUM REGELN EINES NETZGEKOPPELTEN STROMRICHTERS 审中-公开
公开(公告)号：WO2022268914A1
公开(公告)日：2022-12-29
申请号：PCT/EP2022/067076
申请日：2022-06-22
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： UNRUH, Peter , GÜHNA, Tobias
IPC分类号： H02M1/32 , H02H3/06 , H02M7/5395 , H02H3/066 , H02M1/0025 , H02M1/325
摘要： Ein Verfahren zum Regeln eines netzgekoppelten Stromrichters beinhaltet ein Einstellen einer Stellspannung für den Stromrichter abhängig von einer Ausgangsspannung des Stromrichters. Das Verfahren sieht ein Begrenzen einer Spannungsabweichung zwischen der Stellspannung und der Ausgangsspannung vor. Bei Ausführungsbeispielen erfolgt die Begrenzung eines Stellspannungszeigers in Amplitude und Winkel, wobei Stellbereiche für Amplitude und/oder Winkel situationsabhängig eingestellt werden. Bei weiteren Ausführungsbeispielen erfolgt die Begrenzung in Koordinaten zueinander orthogonaler und geradliniger Koordinatenachsen. Ferner wird bei einem Verfahren zum Regeln eines Stromrichters bei der Bestimmung einer Steuergröße eine Potentialdifferenz zwischen einem Bezugspotential der Ausgangsspannung und einem Bezugspotential einer Brückenspannung des Stromrichters berücksichtigt. Alternativ oder zusätzlich wird ein Beitrag einer Spannungsschwingung in einem Zwischenkreis zu der Brückenspannung berücksichtigt.

6. 发明申请

WO2021255173A1 PHASE TRACKING IN AC POWER SYSTEMS USING COHERENT SAMPLING 审中-公开
公开(公告)号：WO2021255173A1
公开(公告)日：2021-12-23
申请号：PCT/EP2021/066417
申请日：2021-06-17
申请人： ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
发明人： MCCARTNEY, Damien J. , MURPHY, Damien , MONZON, Jeric Adrian Butiu
IPC分类号： G01R19/25 , G01R21/133 , G01R19/2509 , G01R19/2513 , H02M1/0012 , H02M1/0025 , H02M7/48
摘要： Embodiments of the present disclosure may monitor and adjust a sampling rate of an ADC for converting the power signal to a digital signal, locking onto the phase and frequency of the power signal. This technique may make the sampling process coherent relative to the power signal. Properties of the power signal, such as phase, frequency, and magnitude, may be extracted relative to an idealized power signal.

7. 发明申请

WO2021191145A1 CONVERTISSEUR ALTERNATIF/CONTINU A CORRECTION DU FACTEUR DE PUISSANCE ET PROCEDE DE CALIBRAGE D'UN TEL CONVERTISSEUR 审中-公开
公开(公告)号：WO2021191145A1
公开(公告)日：2021-09-30
申请号：PCT/EP2021/057264
申请日：2021-03-22
申请人： VITESCO TECHNOLOGIES GMBH
发明人： BOISSIERE, Philippe
IPC分类号： H02M1/42 , B60L53/22 , H02J7/02 , H02M1/00 , G01R35/00 , B60L2210/30 , H02J2207/20 , H02M1/0025 , H02M1/4208
摘要： Procédé de calibrage d'un convertisseur alternatif/continu (8) à correction du facteur de puissance, comportant les étapes suivantes : - brancher le connecteur d'entrée (2) du convertisseur sur une alimentation électrique de tension continue prédéterminée, de sorte que cette tension continue prédéterminée soit appliquée entre les bornes (4) du connecteur d'entrée (2); - mesurer, avec un moyen de mesure de tension (11), la tension continue résultante de calibrage qui est délivrée par le module de commutation (6) lorsque la tension continue prédéterminée est appliquée entre les bornes (4) du connecteur d'entrée (2); - calibrer le moyen de mesure de tension (11) en réalisant un tarage ramenant la tension résultante de calibrage au niveau de la tension continue prédéterminée.

8. 发明申请

WO2022015366A1 METHOD, SYSTEM AND APPARATUS FOR CONSTANT, HIGH SWITCHING FREQUENCY AND NARROW DUTY RATIO PWM CONTROL OF DC-DC CONVERTERS AND ACCURATE PFM CONTROL AT LIGHT LOAD 审中-公开
公开(公告)号：WO2022015366A1
公开(公告)日：2022-01-20
申请号：PCT/US2021/013806
申请日：2021-01-18
申请人： MICROCHIP TECHNOLOGY INCORPORATED
发明人： DEARBORN, Scott , OU, Jiong
IPC分类号： H03K3/017 , G05F1/561 , H02M1/0025 , H02M1/0041 , H02M3/157 , H03K3/037
摘要： DC-DC power converter control comprises current starved delay lines for phase shifting control signals that set and reset a RS flip-flop to provide controllable PWM pulse widths from narrow to wide at a clock frequency. Precise pulse width control and a guaranteed minimum pulse width for pulse frequency modulation (PFM) control the DC-DC power converter during low power demand is also provided. PFM control maintains the same pulse width while decreasing the number of pulses per second when the output voltage exceeds an upper value and increases the number of pulses per second when the output voltage is less than a lower value. Voltage-to-current converters provide control currents to the current starved delay lines that provide the control signals to the SET and RESET inputs of the RS flip-flop. A D-flip-flop may further be used to improved circuit operation when generating high duty cycle (> 50 percent) pulse widths.

9. 发明申请

WO2021254681A1 A SYNCHRONOUS FLYBACK CONVERTER 审中-公开
公开(公告)号：WO2021254681A1
公开(公告)日：2021-12-23
申请号：PCT/EP2021/061025
申请日：2021-04-27
申请人： TRIDONIC GMBH & CO KG
发明人： KLOTZ, Reimar
IPC分类号： H02M3/335 , H02M1/00 , H02M1/0009 , H02M1/0025 , H02M1/0058 , H02M3/33592
摘要： A synchronous flyback converter (100) comprises: ‐ a first control circuit (101) configured to: a) control a periodic switching of a primary side switch (102), preferably a MOSFET switch, and a secondary side switch (104); b) measure a level of a drain source voltage ∆t discharge of the primary side switch (102); and c) control the primary side switch (102) to be turned on, when said monitored drain source voltage falls below a given voltage level; ‐ a second control circuit (103) configured to: in case the time duration Δt of the drain source voltage Vds of the first switch (102) dropping below said given voltage value is outside a predetermined range, supply the first control circuit (101) with a modified primary side current value Imax at which the first control circuit (101) switches off the primary side switch (102).

10. 发明申请

WO2021244979A1 IMPROVEMENTS IN OR RELATING TO VOLTAGE SOURCE CONVERTERS 审中-公开
公开(公告)号：WO2021244979A1
公开(公告)日：2021-12-09
申请号：PCT/EP2021/064396
申请日：2021-05-28
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： BRIFF, Pablo , ADAMCZYK, Andrzej , SINGHAL, Sameer
IPC分类号： H02M1/00 , H02M7/483 , H02M1/0003 , H02M1/0012 , H02M1/0025 , H02M7/4835
摘要： In the field of voltage source converters, for power conversion between alternating current (AC) and direct current (DC) in high voltage direct current (HVDC) power transmission networks, there is a need for an improved voltage source converter. A voltage source converter (10) comprises first and second DC terminals (12, 14), which are for connection to a DC network, and which have at least one converter limb (16A, 16B, 16C) extending therebetween. The or each converter limb (16A, 16B, 16C) includes first and second limb portions (18A, 18B, 18C, 20A, 20B, 20C) that are separated by a corresponding AC terminal (22A, 22B, 22C), which are for connection to a respective phase (A, B, C) of an AC network. Each limb portion (18A, 18B, 18C, 20A, 20B, 20C) includes a chain-link converter (24) that extends between the associated AC terminal (22A, 22B, 22C) and a corresponding one of the first or the second DC terminal (12, 14). Each chain-link converter (24) also includes a chain-link converter controller (26) which is programmed to control a plurality of series connected chain-link modules (28), each of which has a plurality of switching elements that are connected in parallel with an energy storage device, and whereby each chain-link converter (24) is controllable to provide a stepped variable voltage source. The voltage source converter (10) additionally includes a voltage source converter controller (30) which is arranged in operative communication with each chain-link converter controller (26) to coordinate operation of the chain-link converters (24). At least one chain-link converter controller (26) is programmed to establish at a first time instant a total voltage sum of all energies stored by the energy storage devices in each chain-link converter (24) within the voltage source converter (10), and to send the established total voltage sum to the voltage source converter controller (30). The voltage source converter controller (30) is programmed to establish a modulation index demand for each chain-link converter (24). Each said modulation index demand corresponds to a chain-link converter voltage reference, that the corresponding chain-link converter (24) is required to produce, divided by the received total voltage sum. In addition, the voltage source converter controller (30) is further programmed to send the established modulation index demand to each corresponding chain-link converter controller (26). In turn, each chain-link converter controller (26) is further programmed to reconstruct from the received modulation index demand the chain-link converter voltage reference, which the chain-link converter (24) it is controlling is required to produce, by multiplying the received modulation index demand by the total voltage sum established at the first time instant.

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