公开(公告)号：US20170149272A1

公开(公告)日：2017-05-25

申请号：US14946817

申请日：2015-11-20

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yehuda Daniel Levy

IPC: H02J9/06 ,  H02J7/00 ,  H05B33/08

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.

公开(公告)号：US20170085186A1

公开(公告)日：2017-03-23

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: H02M3/335 ,  H05B37/02

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.

公开(公告)号：US20150091462A1

公开(公告)日：2015-04-02

申请号：US14042791

申请日：2013-10-01

Applicant: General Electric Company

Inventor： Yehuda Daniel Levy

IPC: 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。