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公开(公告)号：US09748844B2
公开(公告)日：2017-08-29
申请号：US14975349
申请日：2015-12-18
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Ramanujam Ramabhadran , Jeffrey Joseph Nasadoski , Yehuda Daniel Levy , Shimon Khananshvili , Pradeep Vijayan , Bruce Richard Roberts
CPC classification number: H02M3/1582 , H02M1/12 , H02M1/4208 , H02M1/4225 , H05B33/0815 , Y02B70/126
Abstract: An electronic device includes a controller configured to regulate one or more voltages or currents of a power converter. The controller is configured to receive an input voltage of the power converter, determine whether the power converter is operating in a first mode of operation or a second mode of operation based at least in part on the input voltage, generate a multiplier reference signal for the power converter based on whether the power converter is operating in the first mode of operation or the second mode of operation, and adjust an input current of the power converter based at least in part on the multiplier reference signal. Adjusting the input current includes correcting the input current to be substantially identical in form to the input voltage.
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12.发明授权System and method for achieving precise regulation of multiple outputs in a multi-resonant LED driver stage 有权用于在多谐振LED驱动级中实现多输出的精确调节的系统和方法公开(公告)号：US09585207B2
公开(公告)日：2017-02-28
申请号：US14328909
申请日：2014-07-11
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Ramanujam Ramabhadran , Gang Yao
IPC: H05B33/08
CPC classification number: H05B33/0812 , H05B33/0815
Abstract: A light emitting diode (LED) driver includes an inverter for converting a DC input signal to a pulsating signal. A multiple output multi-resonant converter generates a first LED string current in response to the pulsating signal, and also generates a second LED string current in response to the pulsating signal. A transistor that may be a FET or BJT operating in its linear region regulates the second LED string current independent of the first LED string current without sacrificing efficiency of the overall power train.
Abstract translation: 发光二极管（LED）驱动器包括用于将DC输入信号转换为脉动信号的反相器。 多输出多谐振转换器响应于脉动信号产生第一LED串电流，并且还响应于脉动信号产生第二LED串电流。 可以是在其线性区域中操作的FET或BJT的晶体管调节第二LED串电流，而不影响整个动力传动系的效率。
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13.发明授权Method and system for controlling color characteristics of one or more illumination devices 有权用于控制一个或多个照明装置的颜色特性的方法和系统公开(公告)号：US09147240B2
公开(公告)日：2015-09-29
申请号：US14087609
申请日：2013-11-22
Applicant: General Electric Company
Inventor： Danijel Maricic , Ramanujam Ramabhadran , Mohamed Cherif Ghanem
CPC classification number: G06T7/0004 , G06T7/60 , G06T7/90 , G06T2207/10024 , H05B33/0863 , H05B37/0227
Abstract: A method for operating illumination sources includes receiving a first set of images of one or more illumination sources that are generated by an image capturing device. The method further includes computing a first distance and a first perspective angle between the image capturing device and each illumination source during the generation of the first set of images. Furthermore, the method includes generating first characteristic information for each illumination source based on a comparison between at least one of the first distance or the first perspective angle for each illumination source with at least one of a predefined distance or a predefined perspective angle for each illumination source. The method also includes generating a command signal based on a comparison between the first characteristic information and a predefined characteristic threshold for each of the one or more illumination sources.
Abstract translation: 一种用于操作照明源的方法包括接收由图像捕获装置产生的一个或多个照明源的第一组图像。 该方法还包括在第一组图像的生成期间计算图像捕获装置与每个照明源之间的第一距离和第一透视角。 此外，该方法包括基于每个照明源的第一距离或第一透视角中的至少一个与每个照明的预定距离或预定透视角中的至少一个之间的比较来生成每个照明源的第一特征信息 资源。 该方法还包括基于第一特征信息和一个或多个照明源中的每一个的预定特征阈值之间的比较产生命令信号。
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公开(公告)号：US20150108924A1
公开(公告)日：2015-04-23
申请号：US14586550
申请日：2014-12-30
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , John Stanley Glaser
CPC classification number: H01L41/042 , H01L41/25 , H02M7/53803 , H02M7/797 , H02M2001/0019 , Y10T29/42
Abstract: A system for driving a piezoelectric load includes a direct current (DC) voltage source and a bi-directional DC-to-DC converter having a primary side coupled to the DC voltage source and a secondary side and comprising a control input configured to receive a first control signal configured to control conversion of a first voltage on the primary side of the bi-directional DC-to-DC converter to a second voltage on the secondary side of the bi-directional DC-to-DC converter. The driver system also includes a capacitor coupled to the secondary side of the bi-directional DC-to-DC converter and configured to remove a DC offset of the second voltage and includes a reactive load having a first terminal coupled to the capacitor and a second terminal coupled to the secondary side of the bi-directional DC-to-DC converter.
Abstract translation: 用于驱动压电负载的系统包括直流（DC）电压源和双向DC-DC转换器，其具有耦合到DC电压源的初级侧和次级侧，并且包括被配置为接收 第一控制信号被配置为控制双向DC-DC转换器的初级侧的第一电压的转换为双向DC-DC转换器的次级侧上的第二电压。 驱动器系统还包括耦合到双向DC-DC转换器的次级侧的电容器，其被配置为去除第二电压的DC偏移，并且包括具有耦合到电容器的第一端子的无功负载和第二 端子耦合到双向DC-DC转换器的次级侧。
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公开(公告)号：US20150108899A1
公开(公告)日：2015-04-23
申请号：US14060168
申请日：2013-10-22
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Charles Erklin Seeley , John Stanley Glaser , Robert James Thomas , Stanton Earl Weaver, Jr.
CPC classification number: H02H9/04 , F21V29/63 , F21Y2115/10 , H02H9/041
Abstract: A cooling system includes a synthetic jet having a first synthetic jet lead and a second synthetic jet lead. The cooling system also includes a capacitor having a first capacitor lead and a second capacitor lead. The first capacitor lead is coupled to the first synthetic jet lead. The synthetic jet is configured to be powered via an alternating current (AC) power source coupled to the second capacitor lead and to the second synthetic jet lead.
Abstract translation: 冷却系统包括具有第一合成射流引线和第二合成射流引线的合成射流。 冷却系统还包括具有第一电容器引线和第二电容器引线的电容器。 第一电容器引线耦合到第一合成射流引线。 合成射流被配置为通过耦合到第二电容器引线和第二合成射流引线的交流（AC）电源来供电。
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Patent Agency Ranking
公开(公告)号：US12267012B2
公开(公告)日：2025-04-01
申请号：US17619397
申请日：2019-06-17
Applicant: General Electric Company
Inventor： Zheyu Zhang , Tomas Sadilek , Ramanujam Ramabhadran , Hao Tu
Abstract: A multilevel converter system is provided. The system includes a converter and a converter controller interfaced with the converter. The converter controller includes a voltage loop, a current loop, and a voltage compensation loop. The voltage loop is configured to receive first and second voltages from the first and second segments of the converter and a reference voltage. The current loop is configured to receive a current output of the converter, a reference current, and a balancing reference current. The voltage compensation loop is configured to receive the first and second voltages and a sign signal. The converter controller is configured to generate first and second pulse-width modulation (PWM) signals using output signals from the current loop and the output compensation signals from the voltage compensation loop. The PWM signals are configured to control the switches of the converter and to balance the first voltage with the second voltage.
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公开(公告)号：US11529803B2
公开(公告)日：2022-12-20
申请号：US16711175
申请日：2019-12-11
Applicant: General Electric Company
Inventor： Ruxi Wang , Manoj Ramprasad Shah , Ramanujam Ramabhadran , Yanzhe Yang
IPC: B33Y10/00 , B33Y30/00 , B29C70/88 , H01F17/00 , H01F17/04 , H01F27/22 , H01F41/04 , B29C64/209 , H01F41/02 , B29C64/336 , B33Y80/00 , H01F27/28
Abstract: A system includes a magnetic material supply for regulating a magnetic material flow rate of a magnetic material and a binder material supply for regulating a binder material flow rate of a binder material. A nozzle is configured for depositing a deposition mixture of the magnetic material and the binder material on a surface and a preheater is configured to preheat the deposition mixture before depositing on the surface. A controller is in operative communication with the magnetic material supply, the binder material supply, and the preheater. The controller is configured to receive an inductor core design file that represents a geometry and a magnetic permeability distribution of an inductor core, move the nozzle to one or more deposition locations, and adjust the magnetic material flow rate to the binder material flow rate to achieve a deposition mixture having a desired magnetic permeability at the deposition locations.
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公开(公告)号：US20220158540A1
公开(公告)日：2022-05-19
申请号：US17439157
申请日：2019-03-15
Applicant: General Electric Company
Inventor： Zheyu Zhang , Ramanujam Ramabhadran , Douglas Carl Hofer , Ahmed Elasser
Abstract: A customizable power conversion system (1000) is configured to operate with multiple alternating current (AC) and direct current (DC) power sources (1001,1003) and supplies multiple AC and DC loads (1018,1020,1022,1024). The customizable power conversion system is also configured to be assembled from a plurality of customizable power converters (1004,1006,1008,1010,1012), each of which is configured to function as a building block of the customizable power conversion system. More particularly, each customizable power converter may be configured as any DC/DC, DC/AC, AC/DC, or AC/AC converter, such as any of i) an inverter, ii) a DC/DC converter for use with a photovoltaic (PV) array (or string of PV arrays), and iii) a DC/DC converter for use with an energy storage element (e.g., a battery or battery string).
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19.发明申请公开(公告)号：US20200176360A1
公开(公告)日：2020-06-04
申请号：US16203777
申请日：2018-11-29
Applicant: General Electric Company
Inventor： Christopher James Kapusta , Ramanujam Ramabhadran , Kum-Kang Huh , Brian Lynn Rowden , Glenn Scott Claydon , Ahmed Elasser
IPC: H01L23/498 , H01L23/64 , H01L23/538 , H01L21/56 , H01L23/00 , H01L29/20
Abstract: A modular electronics package is disclosed that includes a first and second electronics packages, with each of the first and second electronics packages including a metallized insulating substrate and a solid-state switching device positioned on the metallized insulating substrate, the solid-state switching device comprising a plurality of contact pads electrically coupled to the first conductor layer of the metallized insulating substrate. A conductive joining material is positioned between the first electronics package and the second electronics package to electrically connect them together. The first electronics package and the second electronics package are stacked with one another to form a half-bridge unit cell, with the half-bridge unit cell having a current path through the solid-state switching device in the first electronics package and a close coupled return current path through the solid-state switching device in the second electronics package in opposite flow directions.
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公开(公告)号：US09853555B2
公开(公告)日：2017-12-26
申请号：US14856657
申请日：2015-09-17
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Han Peng , Yehuda Daniel Levy , John Stanley Glaser
IPC: H02M7/5383 , H02M3/335 , H05B37/02 , H02M1/00
CPC classification number: H02M3/33546 , H02M2001/0058 , H05B33/0815 , H05B37/02 , Y02B70/1491
Abstract: A universal power adapter includes a power converter configured to generate an output power based on a switching frequency of the power converter. The universal power adapter also includes a frequency controller operatively coupled to the power converter and configured to control the switching frequency of the power converter. The universal power adapter further includes a switch capacitor circuit having a plurality of capacitive elements, operatively coupled to the power converter. The switch capacitor circuit is configured to switch between the plurality of capacitive elements. The universal power adapter also includes a capacitance controller operatively coupled to the switch capacitor circuit and configured to control the switch capacitor circuit to control switching between the plurality of capacitive elements to maintain a control parameter within a threshold range of.
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