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    CIRCUITS AND METHODS FOR SYNCHRONOUS RECTIFICATION IN RESONANT CONVERTERS
    1.
    发明申请
    CIRCUITS AND METHODS FOR SYNCHRONOUS RECTIFICATION IN RESONANT CONVERTERS 有权
    用于同步转换器同步整流的电路和方法

    公开(公告)号：US20170025965A1

    公开(公告)日：2017-01-26

    申请号：US14806793

    申请日：2015-07-23

    Applicant: General Electric Company

    Inventor： Ramanujam Ramabhadran ,  Yehuda Daniel Levy ,  Xu She

    IPC: H02M3/335

    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.

    Abstract translation: 谐振转换器包括具有串联耦合的第一和第二开关的初级级，连接到第一开关和第二开关以控制其操作的控制器;第一变压器，包括耦合到第一和第二开关之间的节点的初级线圈， 以及耦合到第一变压器的初级线圈的谐振电感器。 谐振转换器还包括具有由耦合到谐振电感器的初级线圈形成的第二变压器和包括第一和第二线圈段的次级线圈，耦合到次级线圈的第一线圈段的第三开关的第二级和第四级 开关耦合到次级线圈的第二线圈部分。 提供开关驱动电路以驱动用于同步整流的第三和第四开关，开关驱动电路包括第一变压器的次级线圈。

    Single-stage AC-DC power converter with flyback PFC and selectable dual output current
    2.
    发明授权
    Single-stage AC-DC power converter with flyback PFC and selectable dual output current 有权
    具有反激式PFC和可选双输出电流的单级AC-DC电源转换器

    公开(公告)号：US09380655B2

    公开(公告)日：2016-06-28

    申请号：US14042802

    申请日：2013-10-01

    Applicant: General Electric Company

    Inventor： Yehuda Daniel Levy

    IPC: H05B33/08 ,  H02M3/335 ,  H02M1/42 ,  H02M3/28

    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电路还包括反激式变压器和开关电路，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。

    Universal power adapter and an associated method thereof
    4.
    发明授权
    Universal power adapter and an associated method thereof 有权

    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.

    SMALL POWER HARVESTING METHODS FOR POWERING CONTROL DEVICES USING A SINGLE POWER LINE
    6.
    发明申请
    SMALL POWER HARVESTING METHODS FOR POWERING CONTROL DEVICES USING A SINGLE POWER LINE 审中-公开
    使用单电源线为控制装置供电的小功率采集方法

    公开(公告)号：US20160241157A1

    公开(公告)日：2016-08-18

    申请号：US14845429

    申请日：2015-09-04

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Yehuda Daniel Levy

    IPC: H02M7/06

    CPC classification number: H02M7/06 ,  H02J3/00 ,  H02J11/00 ,  H02J2007/0095 ,  H02M1/08 ,  H02M3/156 ,  H02M3/335 ,  H02M5/293 ,  H02M7/217 ,  H02M7/4807 ,  H02M2001/0006

    Abstract: A power harvesting circuit includes a first switch connected in series between an AC source and a load, a switch control circuit connected to the switch and operable to cause the switch to cycle AC power to the load, and a power collection circuit for collecting power resulting from the power cycling. A method of power harvesting includes cycling AC power to a load using a switch, and collecting power generated by the power cycling and providing the collected power for use by a load control circuit. An active controller includes a load control circuit, and a power harvesting circuit having first switch connected in series between an AC source and a load, a switch control circuit connected to the switch and operable to cause the switch to cycle AC power to the load, and a power collection circuit for collecting power resulting from the power cycling.

    Abstract translation: 电力收集电路包括串联在AC电源和负载之间的第一开关，连接到开关的开关控制电路，并且可操作以使开关将AC电力循环到负载;以及功率采集电路，用于收集功率 从电力循环。 电力收集的方法包括使用开关将AC电力循环到负载，以及收集由电力循环产生的电力并提供所收集的电力供负载控制电路使用。 有源控制器包括负载控制电路和具有串联连接在AC电源和负载之间的第一开关的功率收集电路，连接到开关并可操作以使开关将AC电力循环到负载的开关控制电路， 以及用于收集由电力循环产生的电力的电力收集电路。

    Two-stage LED driver with buck PFC and improved THD
    8.
    发明授权
    Two-stage LED driver with buck PFC and improved THD 有权
    具有降压PFC的两级LED驱动器和改进的THD

    公开(公告)号：US09510403B2

    公开(公告)日：2016-11-29

    申请号：US14042791

    申请日：2013-10-01

    Applicant: General Electric Company

    Inventor： Yehuda Daniel Levy

    IPC: H05B37/02 ,  H05B33/08

    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 multiplying 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 multiplied using a Zener diode ladder.

    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。 通过将PFC控制器检测到的整流输入电压相乘，由降压PFC电路吸收的输入交流电流具有大大提高的总谐波失真（THD），无需使用昂贵的PFC控制器即可实现。 整流的输入电压使用齐纳二极管梯形倍增。

    Two-stage LED driver with selectable dual output current
    9.
    发明授权
    Two-stage LED driver with selectable dual output current 有权
    双级LED驱动器，可选择双输出电流

    公开(公告)号：US09301350B2

    公开(公告)日：2016-03-29

    申请号：US14042786

    申请日：2013-10-01

    Applicant: General Electric Company

    Inventor： Yehuda Daniel Levy

    IPC: H05B37/02 ,  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。

    Single stage AC-DC power converter with flyback PFC and improved THD
    10.
    发明授权
    Single stage AC-DC power converter with flyback PFC and improved THD 有权
    具有反激式PFC的单级AC-DC电源转换器和改进的THD

    公开(公告)号：US09166483B2

    公开(公告)日：2015-10-20

    申请号：US14042794

    申请日：2013-10-01

    Applicant: General Electric Company

    Inventor： Yehuda Daniel Levy

    IPC: H02M3/335 ,  H05B33/08 ,  H02M1/12 ,  H02M1/42 ,  H02M1/00

    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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