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公开(公告)号：US09917474B2
公开(公告)日：2018-03-13
申请号：US14946817
申请日：2015-11-20
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Yehuda Daniel Levy
CPC classification number: H02J9/061 , H02J7/0068 , H02J9/06 , H05B33/0806 , H05B33/0842 , H05B37/0227
Abstract: Provided is a backup power system for providing power to a load when a primary lighting system is disabled. The backup power system includes an energy source configured to supply an amount of power to the backup power system, and a charger connectable to the energy source and a power source of the primary lighting system. The backup power system additionally includes a controller configured to measure a current value of the primary lighting system and determine a backup current value corresponding to an amount of backup current that is a fractional amount of the determined current value. The backup power system include a current source configured to provide the determined backup current.
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12.发明授权公开(公告)号：US09332601B2
公开(公告)日：2016-05-03
申请号：US14042810
申请日：2013-10-01
Applicant: General Electric Company
Inventor： Yehuda Daniel Levy
CPC classification number: H05B33/0815 , H02M1/4258 , H02M3/28 , Y02B70/126
Abstract: A two-stage AC-DC power converter for powering a load at a substantially constant current, and related methods and systems. The first stage of the AC-DC power converter includes a conventional power factor correction (PFC) circuit that outputs a direct current (DC) voltage and a DC current. The second stage of the AC-DC power converter includes a low voltage flyback circuit that receives the DC voltage and the DC current. The low voltage flyback circuit includes a flyback transformer and a switch circuit that selectably toggles the substantially constant output current provided by the low voltage flyback circuit to the load between a first and a second, preset constant current. The secondary windings of the flyback transformer are split into two sections, and the switch circuit toggles the two sections of the secondary windings between a series and a parallel configuration to provide the first and second, preset constant currents.
Abstract translation: 一种用于以基本恒定的电流为负载供电的两级AC-DC电力转换器，以及相关的方法和系统。 AC-DC功率转换器的第一级包括输出直流（DC）电压和直流电流的常规功率因数校正（PFC）电路。 AC-DC电力转换器的第二级包括接收DC电压和DC电流的低电压反激电路。 低电压反激电路包括反激式变压器和开关电路，可选地将由低电压反激电路提供的基本上恒定的输出电流切换到第一和第二预置恒定电流之间的负载。 回扫变压器的次级绕组分为两部分，开关电路将次级绕组的两个部分切换成串联和并联配置，以提供第一和第二预置恒定电流。
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公开(公告)号：US20150091466A1
公开(公告)日：2015-04-02
申请号：US14042786
申请日：2013-10-01
Applicant: General Electric Company
Inventor： Yehuda Daniel Levy
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0809
Abstract: A two-stage LED driver for providing a substantially constant output current to an LED load, and related methods and systems. The first stage of the LED driver includes a conventional power factor correction (PFC) circuit that outputs a direct current (DC) voltage and a DC current. The second stage of the LED driver includes a low voltage flyback circuit that receives the DC voltage and the DC current. The low voltage flyback circuit includes a flyback transformer and a switch circuit that selectably toggles the substantially constant output current provided by the low voltage flyback circuit to the LED load between a first and a second, preset constant current. The secondary windings of the flyback transformer are split into two sections, and the switch circuit toggles the two sections of the secondary windings between a series and a parallel configuration to provide the first and second, preset constant currents.
Abstract translation: 用于向LED负载提供基本恒定的输出电流的两级LED驱动器，以及相关的方法和系统。 LED驱动器的第一阶段包括输出直流（DC）电压和直流电流的常规功率因数校正（PFC）电路。 LED驱动器的第二阶段包括一个接收直流电压和直流电流的低电压反激电路。 低电压反激电路包括反激式变压器和开关电路，其可选地在第一和第二预置恒定电流之间切换由低电压反激电路提供的基本恒定的输出电流至LED负载。 回扫变压器的次级绕组分为两部分，开关电路将次级绕组的两个部分切换成串联和并联配置，以提供第一和第二预置恒定电流。
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14.发明申请SINGLE-STAGE AC-DC POWER CONVERTER WITH FLYBACK PFC AND SELECTABLE DUAL OUTPUT CURRENT 有权单级PFC和可选双输出电流的单级AC-DC电源转换器公开(公告)号：US20150091457A1
公开(公告)日：2015-04-02
申请号：US14042802
申请日：2013-10-01
Applicant: General Electric Company
Inventor： Yehuda Daniel Levy
CPC classification number: H05B33/0815 , H02M1/4258 , H02M3/28 , Y02B70/126
Abstract: A single-stage AC-DC power converter for powering a load at a substantially constant current, and related methods and systems. The AC-DC power converter includes a high power factor correction (PFC) circuit configured in a flyback topology and operating in transition mode. The flyback PFC circuit outputs a direct current (DC) voltage and a DC current. The PFC circuit further includes a flyback transformer and a switch circuit that selectably toggles the substantially constant output current provided to the load between a first and a second, preset constant current. The secondary windings of the flyback transformer are split into two sections, and the switch circuit toggles the two sections of the secondary windings between a series and a parallel configuration to provide the first and second, preset constant currents. The switch circuit includes a switch and three, fast Schottky diodes.
Abstract translation: 用于以基本恒定的电流为负载供电的单级AC-DC电力转换器，以及相关的方法和系统。 AC-DC功率转换器包括配置在反激拓扑中并在转换模式下操作的高功率因数校正（PFC）电路。 回扫PFC电路输出直流（DC）电压和直流电流。 PFC电路还包括回扫变压器和开关电路，其可选择地切换在第一和第二预置恒定电流之间提供给负载的基本恒定的输出电流。 回扫变压器的次级绕组分为两部分，开关电路将次级绕组的两个部分切换成串联和并联配置，以提供第一和第二预置恒定电流。 开关电路包括一个开关和三个快速的肖特基二极管。
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15.发明申请公开(公告)号：US20150091456A1
公开(公告)日：2015-04-02
申请号：US14042794
申请日：2013-10-01
Applicant: General Electric Company
Inventor： Yehuda Daniel Levy
CPC classification number: H02M3/33507 , H02M1/12 , H02M1/4225 , H02M2001/0025 , H02M2001/007 , H05B33/0806 , H05B33/0815 , H05B33/0845 , Y02B70/126
Abstract: A single-stage AC-DC power converter for powering a load at a substantially constant current, and related methods and systems. The AC-DC power converter includes a high power factor correction (PFC) circuit configured in a flyback topology and operating in transition mode. The flyback PFC circuit has a PFC controller and is configured to draw an input AC current from an AC power supply. The input AC current has a first total harmonic distortion (THD). The flyback PFC circuit outputs a DC current to the load. The PFC controller is configured to sense a rectified input voltage. By multiplying the rectified input voltage sensed by the PFC controller, the input AC current drawn by the flyback PFC circuit has a second, much improved THD, which is achievable without the need of an expensive PFC controller. The rectified input voltage sensed by the PFC controller is multiplied using a Zener diode ladder.
Abstract translation: 用于以基本恒定的电流为负载供电的单级AC-DC电力转换器，以及相关的方法和系统。 AC-DC功率转换器包括配置在反激拓扑中并在转换模式下操作的高功率因数校正（PFC）电路。 回扫PFC电路具有PFC控制器，并被配置为从交流电源抽取输入交流电流。 输入交流电流具有第一个总谐波失真（THD）。 回扫PFC电路向负载输出直流电流。 PFC控制器被配置为感测整流输入电压。 通过将PFC控制器感测到的整流输入电压相乘，由反激式PFC电路吸收的输入交流电流具有第二个大大改善的THD，可以在不需要昂贵的PFC控制器的情况下实现。 由PFC控制器感测到的整流输入电压使用齐纳二极管梯形变倍。
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Patent Agency Ranking
公开(公告)号：US08957600B1
公开(公告)日：2015-02-17
申请号：US14042796
申请日：2013-10-01
Applicant: General Electric Company
Inventor： Yehuda Daniel Levy
CPC classification number: H05B33/0815
Abstract: A two-stage light emitting diode (LED) driver for powering an LED load at a substantially constant current, and related methods and systems. The first or front end stage of the LED driver includes a buck topology power factor correction (PFC) circuit, the buck PFC circuit and a PFC controller. The second stage of the LED driver includes a conventional isolation and regulator circuit configured to receive the DC voltage and DC current output by the buck PFC and then to provide the substantially constant current to the LED load. By squaring the rectified input voltage sensed by the PFC controller, the input AC current drawn by the buck PFC circuit has a much improved total harmonic distortion (THD), which is achievable without the need for using an expensive PFC controller. The rectified input voltage is squared using a Zener diode ladder circuit.
Abstract translation: 用于以基本上恒定的电流为LED负载供电的两级发光二极管（LED）驱动器，以及相关的方法和系统。 LED驱动器的第一或前端级包括降压拓扑功率因数校正（PFC）电路，降压PFC电路和PFC控制器。 LED驱动器的第二阶段包括常规的隔离和调节器电路，其被配置为接收由降压PFC输出的直流电压和直流电流，然后向LED负载提供基本恒定的电流。 通过平衡由PFC控制器检测到的整流输入电压，由降压PFC电路吸收的输入交流电流具有大大改善的总谐波失真（THD），这是可以实现的，而不需要使用昂贵的PFC控制器。 整流输入电压使用齐纳二极管梯形电路平方。
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公开(公告)号：US10819225B2
公开(公告)日：2020-10-27
申请号：US16296131
申请日：2019-03-07
Applicant: General Electric Company
Inventor： Francois Giguere , Yehuda Daniel Levy , Mohamed Cherif Ghanem
Abstract: The method, apparatus and system of a single-stage current-fed clamped series resonant power factor corrected (PFC) converter CF-CSRC provides power conversion and current regulation. The CF-CSRC system may be implemented in a single-stage isolated topology for high efficiency unity power factor correction (PFC) converter applications. Moreover, the CF-CSRC system combines the intrinsic advantages of the classical clamped series resonant converter while mitigating drawbacks by using an integrated boost input current shaper.
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公开(公告)号：US09887634B2
公开(公告)日：2018-02-06
申请号：US14806793
申请日：2015-07-23
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Yehuda Daniel Levy , Xu She
CPC classification number: H02M3/33592 , H02M3/33546 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491 , Y02P80/112
Abstract: A resonant converter includes a primary stage having first and second switches coupled in series, a controller coupled to the first switch and the second switch to control operation thereof, a first transformer comprising a primary coil coupled to a node between the first and second switches, and a resonant inductor coupled to the primary coil of the first transformer. The resonant converter also includes a secondary stage having a second transformer formed of a primary coil coupled to the resonant inductor and a secondary coil comprising first and second coil sections, a third switch coupled to the first coil section of the secondary coil, and a fourth switch coupled to the second coil section of the secondary coil. A switch drive circuit is provided to drive the third and fourth switches for synchronous rectification, with the switch drive circuit comprising a secondary coil of the first transformer.
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公开(公告)号：US09787303B2
公开(公告)日：2017-10-10
申请号：US14958411
申请日：2015-12-03
Applicant: General Electric Company
Inventor： Yehuda Daniel Levy , Ramanujam Ramabhadran
IPC: H03K19/00 , H03K17/687 , H05B33/08 , H03K17/567
CPC classification number: H03K17/687 , H02M1/08 , H03K17/063 , H03K17/567 , H03K2017/066 , H03K2217/0063 , H03K2217/0081 , H05B33/0815 , H05B33/0845
Abstract: There are provided a driver circuit, a method of driving a power switch, and a ballast circuit. For example, there is provided a driver circuit configured to receive a control signal and operate a power switch. The driver circuit includes a first switch, a second switch, and a capacitor coupled to control terminals of the first and second switches. The driver circuit further includes a first diode coupled to a first bias terminal of the driver circuit and to the capacitor. Furthermore, the driver circuit includes a second diode coupled to a second bias terminal of the driver circuit and to a terminal of the power switch.
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公开(公告)号：US20170179829A1
公开(公告)日：2017-06-22
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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