公开(公告)号：US20150098164A1

公开(公告)日：2015-04-09

申请号：US14506204

申请日：2014-10-03

Applicant: Lutron Electronics Co., Inc.

Inventor： Robert William Lenig ,  Michael Sizemore ,  Joshua Wilson Thaler ,  Russell L. MacAdam

IPC: H01H47/18

CPC classification number: H01H47/18

Abstract: A load control device may control power delivered to an electrical load from an AC power source. The load control device may include a controllably conductive device adapted to be coupled in series electrical connection between the AC power source and the electrical load, a zero-cross detect circuit configured to generate a zero-cross signal representative of the zero-crossings of an AC voltage. The zero-cross signal may be characterized by pulses occurring in time with the zero-crossings of the AC voltage. The load control device may include a control circuit operatively coupled to the controllably conductive device and the zero cross detect circuit. The control circuit may be configured to identify a rising-edge time and a falling-edge time of one of the pulses of the zero-cross signal, and may control a conductive state of the controllably conductive device based on the rising-edge time and the falling-edge time of the pulse.

Abstract translation: 负载控制装置可以控制从AC电源传递到电负载的功率。 负载控制装置可以包括适于在AC电源和电负载之间串联连接的耦合的可控制导电装置;零交叉检测电路，被配置为产生代表零电压的零交叉的零交叉信号 交流电压。 过零信号的特征可以在于交流电压的过零点在时间上发生的脉冲。 负载控制装置可以包括可操作地耦合到可控导电装置和零交叉检测电路的控制电路。 控制电路可以被配置为识别过零信号中的一个脉冲的上升沿时间和下降沿时间，并且可以基于上升沿时间来控制可控导电器件的导通状态，以及 脉冲的下降沿时间。

公开(公告)号：US20190069382A1

公开(公告)日：2019-02-28

申请号：US16173514

申请日：2018-10-29

Applicant: Lutron Electronics Co., Inc.

Inventor： Venkatesh Chitta ,  Russell L. MacAdam ,  Matthew R. Zartman

IPC: H05B41/39 ,  H05B33/08 ,  H05B37/02 ,  H05B41/392 ,  H05B41/38

CPC classification number: H05B41/39 ,  H05B33/0809 ,  H05B33/0845 ,  H05B37/02 ,  H05B41/38 ,  H05B41/392

Abstract: An electronic dimming ballast or light emitting diode (LED) driver for driving a gas discharge lamp or LED lamp may be operable to control the lamp to avoid flickering and flashing of the lamp during low temperature or low mercury conditions. Such a ballast or driver may include a control circuit that is operable to adjust the intensity of the lamp. Adjusting the intensity of the lamp may include decreasing the intensity of the lamp. The control circuit may be operable to stop adjustment of the intensity of the lamp if a magnitude of the lamp voltage across the lamp is greater than an upper threshold, and subsequently begin to adjust the intensity of the lamp when the lamp voltage across the lamp is less than a lower threshold. Subsequently beginning to adjust the intensity of the lamp may include subsequently decreasing the intensity of the lamp.

公开(公告)号：US10187944B2

公开(公告)日：2019-01-22

申请号：US15256184

申请日：2016-09-02

Applicant: Lutron Electronics Co., Inc.

Inventor： Russell L. MacAdam ,  Joseph T. Parent ,  Russell Weightman

IPC: H05B33/08 ,  H05B39/04 ,  H02M5/257 ,  H02M1/00

Abstract: A load control device for controlling power delivered from an AC power source to an electrical load may comprise a thyristor, a gate current path, and a control circuit. The control circuit may be configured to control the gate current path to conduct a pulse of gate current through a gate terminal of the thyristor to render the thyristor conductive at a firing time during a half-cycle of the AC power source. The control circuit may operate in a first gate drive mode in which the control circuit renders the gate current path non-conductive after a pulse time period from the firing time. The control circuit may operate in a second gate drive mode in which the control circuit maintains the gate current path conductive after the pulse time period during the half-cycle.

公开(公告)号：US20180286613A1

公开(公告)日：2018-10-04

申请号：US15997328

申请日：2018-06-04

Applicant: Lutron Electronics Co., Inc.

Inventor： Robert W. Lenig ,  Michael Sizemore ,  Joshua W. Thaler ,  Russell L. MacAdam

IPC: H01H47/18

CPC classification number: H01H47/18 ,  H01H9/56

Abstract: A load control device may control power delivered to an electrical load from an AC power source. The load control device may include a controllably conductive device adapted to be coupled in series electrical connection between the AC power source and the electrical load, a zero-cross detect circuit configured to generate a zero-cross signal representative of the zero-crossings of an AC voltage. The zero-cross signal may be characterized by pulses occurring in time with the zero-crossings of the AC voltage. The load control device may include a control circuit operatively coupled to the controllably conductive device and the zero cross detect circuit. The control circuit may be configured to identify a rising-edge time and a falling-edge time of one of the pulses of the zero-cross signal, and may control a conductive state of the controllably conductive device based on the rising-edge time and the falling-edge time of the pulse.

公开(公告)号：US20180255629A1

公开(公告)日：2018-09-06

申请号：US15969255

申请日：2018-05-02

Applicant: Lutron Electronics Co., Inc.

Inventor： Venkatesh Chitta ,  Russell L. MacAdam ,  Matthew R. Zartman

IPC: H05B41/39 ,  H05B33/08 ,  H05B37/02 ,  H05B41/392 ,  H05B41/38

CPC classification number: H05B41/39 ,  H05B33/0809 ,  H05B33/0845 ,  H05B37/02 ,  H05B41/38 ,  H05B41/392

Abstract: An electronic dimming ballast or light emitting diode (LED) driver for driving a gas discharge lamp or LED lamp may be operable to control the lamp to avoid flickering and flashing of the lamp during low temperature or low mercury conditions. Such a ballast or driver may include a control circuit that is operable to adjust the intensity of the lamp. Adjusting the intensity of the lamp may include decreasing the intensity of the lamp. The control circuit may be operable to stop adjustment of the intensity of the lamp if a magnitude of the lamp voltage across the lamp is greater than an upper threshold, and subsequently begin to adjust the intensity of the lamp when the lamp voltage across the lamp is less than a lower threshold. Subsequently beginning to adjust the intensity of the lamp may include subsequently decreasing the intensity of the lamp.

公开(公告)号：US20170070161A1

公开(公告)日：2017-03-09

申请号：US15256184

申请日：2016-09-02

Applicant: Lutron Electronics Co., Inc.

Inventor： Russell L. MacAdam ,  Joseph T. Parent ,  Russell Weightman

IPC: H02M7/155 ,  H02M7/06 ,  H05B33/08

CPC classification number: H05B33/0845 ,  H02M5/2576 ,  H02M2001/0006 ,  H05B33/0815 ,  H05B39/044

Abstract: A load control device for controlling power delivered from an AC power source to an electrical load may comprise a thyristor, a gate current path, and a control circuit. The control circuit may be configured to control the gate current path to conduct a pulse of gate current through a gate terminal of the thyristor to render the thyristor conductive at a firing time during a half-cycle of the AC power source. The control circuit may operate in a first gate drive mode in which the control circuit renders the gate current path non-conductive after a pulse time period from the firing time. The control circuit may operate in a second gate drive mode in which the control circuit maintains the gate current path conductive after the pulse time period during the half-cycle.

Abstract translation: 用于控制从AC电源传递到电负载的功率的负载控制装置可以包括晶闸管，栅极电流路径和控制电路。 控制电路可以被配置为控制栅极电流路径以通过晶闸管的栅极端子导通栅极电流的脉冲，以在AC电源的半周期期间使晶闸管在点火时间导通。 控制电路可以在第一栅极驱动模式下工作，其中控制电路在从点火时间起的脉冲时间段之后使栅极电流路径不导通。 控制电路可以在第二栅极驱动模式下工作，其中控制电路在半周期期间的脉冲时间段之后维持栅极电流路径导通。

公开(公告)号：US20140265897A1

公开(公告)日：2014-09-18

申请号：US13829396

申请日：2013-03-14

Applicant: LUTRON ELECTRONICS CO., INC.

Inventor： Mark Taipale ,  Matthew Robert Blakeley ,  Johnathan Paul Ross ,  Russell L. MacAdam

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H02J13/0024 ,  H05B33/0845 ,  H05B37/0218 ,  H05B37/0227 ,  H05B37/0254 ,  H05B37/0263 ,  H05B37/0272 ,  Y02B20/46 ,  Y02B70/3283 ,  Y02B90/2623 ,  Y04S20/246 ,  Y04S40/122

Abstract: A load control device for controlling the amount of power delivered to an electrical load may include a rectifier circuit configured to receive a phase-control voltage and produce a rectified voltage. A power converter may be configured to receive the rectified voltage at an input and generate a bus voltage. An input capacitor may be coupled across the input of the power converter. The input capacitor may be adapted to charge when the magnitude of the phase control voltage is approximately zero volts. The power converter may be configured to operate in a boost mode, such that the magnitude of the bus voltage is greater than a peak magnitude of the input voltage. The power converter may be configured to operate in a buck mode to charge the input capacitor from the bus voltage when the magnitude of the phase-control voltage is approximately zero volts.

Abstract translation: 用于控制传送到电负载的功率量的负载控制装置可以包括被配置为接收相位控制电压并产生整流电压的整流器电路。 功率转换器可以被配置为在输入处接收经整流的电压并产生总线电压。 输入电容器可以跨越功率转换器的输入端耦合。 当相位控制电压的大小近似为零伏时，输入电容器可适于充电。 功率转换器可以被配置为在升压模式下操作，使得总线电压的幅度大于输入电压的峰值幅度。 功率转换器可以被配置为在降压模式下操作，以便当相位控制电压的大小近似为零伏时，从总线电压对输入电容器充电。