公开(公告)号：WO2012024295A1

公开(公告)日：2012-02-23

申请号：PCT/US2011/047917

申请日：2011-08-16

Applicant: LUTRON ELECTRONICS COMPANY, INC. ,  QUAYLE, Jonathan, Robert ,  CHITTA, Venkatesh

Inventor： QUAYLE, Jonathan, Robert ,  CHITTA, Venkatesh

IPC: H05B41/288 ,  H05B41/24

CPC classification number: H05B41/295 ,  H05B41/2825 ,  H05B41/3925 ,  H05B41/3927

Abstract: An electronic ballast for driving a gas discharge lamp comprises an inverter circuit, a resonant tank circuit, and a control circuit operable to determine an approximation of a resonant frequency of the resonant tank circuit and to control the inverter circuit approximation of the resonant frequency. The control circuit determines the approximation of the resonant frequency by adjusting an operating frequency of a high-frequency inverter output voltage provided to the resonant tank circuit from a frequency above the resonant frequency down towards the resonant frequency, measuring the magnitude of a lamp voltage across the lamp, and storing the present value of the operating frequency as the resonant frequency when the magnitude of the lamp voltage reaches a maximum value. The control circuit may control the operating frequency of the inverter output voltage in response to the approximation of the resonant frequency and a target intensity of the lamp.

Abstract translation: 用于驱动气体放电灯的电子镇流器包括逆变器电路，谐振回路和可操作以确定谐振回路的谐振频率的近似值并控制谐振频率的逆变器电路近似的控制电路。 控制电路通过从谐振频率以上的频率向谐振频率调节提供给谐振回路的高频逆变器输出电压的工作频率，来测定谐振频率的近似值，测量灯电压的幅度 并且当灯电压的大小达到最大值时将工作频率的当前值作为谐振频率存储。 响应于谐振频率和灯的目标强度的近似，控制电路可以控制逆变器输出电压的工作频率。

公开(公告)号：WO2011127145A3

公开(公告)日：2011-12-08

申请号：PCT/US2011031389

申请日：2011-04-06

Applicant: LUTRON ELECTRONICS CO ,  CHITTA VENKATESH ,  OZBEK MEHMET ,  QUAYLE JONATHAN ROBERT ,  TAIPALE MARK S ,  VESKOVIC DRAGAN

Inventor： CHITTA VENKATESH ,  OZBEK MEHMET ,  QUAYLE JONATHAN ROBERT ,  TAIPALE MARK S ,  VESKOVIC DRAGAN

IPC: H05B41/392

CPC classification number: H05B41/3921 ,  H05B41/3925

Abstract: An electronic ballast circuit for driving a gas discharge lamp is operable to control the lamp to avoid flicking and flashing of the intensity of the lamp during low temperature conditions. The ballast circuit includes an inverter circuit for receiving a DC bus voltage and for generating a high-frequency output voltage, a resonant tank circuit for receiving the high-frequency output voltage and generating a sinusoidal voltage for driving said lamp, and a control circuit operatively coupled to the inverter circuit for adjusting an intensity of the lamp between a minimum intensity and a maximum intensity. The control circuit receives a control signal representative of a lamp temperature of the lamp, and increases the minimum intensity of the lamp if the lamp temperature of the lamp drops below a cold temperature threshold. In addition, the ballast circuit may also include a temperature sensing circuit operable to generate the control signal representative of the lamp temperature of the lamp.

Abstract translation: 用于驱动气体放电灯的电子镇流器电路可操作以控制灯以避免在低温条件下闪烁和闪烁灯的强度。 镇流器电路包括用于接收DC总线电压并且用于产生高频输出电压的逆变器电路，用于接收高频输出电压并产生用于驱动所述灯的正弦电压的谐振回路电路，以及可操作地控制电路 耦合到逆变器电路，用于在最小强度和最大强度之间调节灯的强度。 控制电路接收表示灯的灯温度的控制信号，并且如果灯的灯温降至冷温度阈值以下，则增加灯的最小强度。 另外，镇流器电路还可以包括温度感测电路，该温度感测电路可操作以生成表示灯的灯温度的控制信号。

公开(公告)号：WO2008124159A2

公开(公告)日：2008-10-16

申请号：PCT/US2008/004571

申请日：2008-04-08

Applicant: LUTRON ELECTRONICS CO., INC. ,  CHITTA, Venkatesh ,  MACADAM, Russell ,  WALMA, Kenneth D., Jr.

Inventor： CHITTA, Venkatesh ,  MACADAM, Russell ,  WALMA, Kenneth D., Jr.

IPC: H05B37/02

CPC classification number: H05B37/0245 ,  H05B41/36 ,  Y10S315/04

Abstract: The invention includes an electronic ballast that is operable to receive a ballast factor setting that enables the ballast to provide a desired ballast factor when the ballast drives a lamp. The electronic ballast includes an input that is adapted to receive a ballast factor setting that represents a desired ballast factor for the ballast and a respective lamp. The ballast further includes a memory that is adapted to store the ballast factor setting, and the ballast includes a processor that uses the ballast factor setting stored in the memory to cause the ballast to provide the desired ballast factor as the ballast drives the lamp. The ballast includes means for substantially preventing subsequently changing the ballast factor setting stored in the memory. Various business methods are further provided as a function of the electronic ballast.

Abstract translation: 本发明包括电子镇流器，其可操作以接收镇流器因子设置，其使镇流器在镇流器驱动灯时能够提供期望的流明系数。 电子镇流器包括适于接收表示用于镇流器和相应灯的所需流明系数的流明系数设置的输入。 镇流器还包括适于存储流明系数设置的存储器，并且镇流器包括使用存储在存储器中的流明系数设置的处理器，以使镇流器在镇流器驱动灯时提供所需的流明系数。 镇流器包括用于基本上防止随后改变存储在存储器中的流明系数设置的装置。 作为电子镇流器的功能，进一步提供各种业务方法。

公开(公告)号：WO2008124159A3

公开(公告)日：2008-12-11

申请号：PCT/US2008004571

申请日：2008-04-08

Applicant: LUTRON ELECTRONICS CO ,  CHITTA VENKATESH ,  MACADAM RUSSELL ,  WALMA KENNETH D JR

Inventor： CHITTA VENKATESH ,  MACADAM RUSSELL ,  WALMA KENNETH D JR

IPC: H05B37/02 ,  H05B41/36

CPC classification number: H05B37/0245 ,  H05B41/36 ,  Y10S315/04

Abstract: The invention includes an electronic ballast that is operable to receive a ballast factor setting that enables the ballast to provide a desired ballast factor when the ballast drives a lamp. The electronic ballast includes an input that is adapted to receive a ballast factor setting that represents a desired ballast factor for the ballast and a respective lamp. The ballast further includes a memory that is adapted to store the ballast factor setting, and the ballast includes a processor that uses the ballast factor setting stored in the memory to cause the ballast to provide the desired ballast factor as the ballast drives the lamp. The ballast includes means for substantially preventing subsequently changing the ballast factor setting stored in the memory. Various business methods are further provided as a function of the electronic ballast.

Abstract translation: 本发明包括电子镇流器，其可操作以接收镇流器因数设置，当镇流器驱动灯时，该镇流器因数设置使镇流器能够提供期望的镇流器因数。 电子镇流器包括适于接收表示镇流器和相应灯的期望镇流器因数的流明系数设置的输入。 镇流器还包括适于存储流明系数设置的存储器，并且镇流器包括处理器，该处理器使用存储在存储器中的流明系数设置来使得镇流器在镇流器驱动灯时提供期望的流明系数。 镇流器包括用于基本上防止随后改变存储在存储器中的流明系数设置的装置。 进一步提供各种业务方法作为电子镇流器的功能。

公开(公告)号：WO2008140916A2

公开(公告)日：2008-11-20

申请号：PCT/US2008/061507

申请日：2008-04-25

Applicant: LUTRON ELECTRONICS COMPANY, INC. ,  CHITTA, Venkatesh ,  ROVNAN, Alexander, J.

Inventor： CHITTA, Venkatesh ,  ROVNAN, Alexander, J.

IPC: H05B41/282

CPC classification number: H05B41/3924 ,  H05B41/2886 ,  Y02B20/202

Abstract: A boost converter for an electronic dimming ballast for driving a gas discharge lamp has an increased output power range. The boost converter operates in discontinuous conduction mode when a desired intensity of the lamp is below a first threshold intensity, and operates in critical conduction mode when the desired intensity is above a second threshold intensity. The boost converter comprises a delay circuit for introducing an amount of delay into the conduction of current through the boost converter. A control circuit of the ballast is operable to drive the delay circuit and thus control the operation of the boost converter in response to the desired intensity of the lamp. The control circuit is further operable to drive the delay circuit with a pulse-width modulated signal to provide multiple amounts of delay into the operation of the boost converter.

Abstract translation: 用于驱动气体放电灯的电子调光镇流器的升压转换器具有增加的输出功率范围。 当所需灯的强度低于第一阈值强度时，升压转换器工作在不连续导通模式，并且当所需强度高于第二阈值强度时，升压转换器工作在临界导通模式。 升压转换器包括用于将一定量的延迟引入通过升压转换器的电流导通的延迟电路。 镇流器的控制电路可操作以驱动延迟电路，从而响应于所需灯的强度来控制升压转换器的操作。 控制电路还可操作以用脉冲宽度调制信号驱动延迟电路，以向升压转换器的操作提供多个延迟。

公开(公告)号：WO2005048660A1

公开(公告)日：2005-05-26

申请号：PCT/US2004/037921

申请日：2004-11-12

Applicant: LUTRON ELECTRONICS CO., INC. ,  COTTONGIM, David, E. ,  ARAKKAL, Jecko ,  CHITTA, Venkatesh ,  TAIPALE, Mark, S.

Inventor： COTTONGIM, David, E. ,  ARAKKAL, Jecko ,  CHITTA, Venkatesh ,  TAIPALE, Mark, S.

IPC: H05B41/285

CPC classification number: H05B41/3925 ,  H05B41/2856 ,  H05B41/2986

Abstract: The output current of a ballast is dynamically limited when an over-temperature condition is detected in the ballast according to one of (i) a step function or (ii) a combination of step and continuous functions, so as to reduce the temperature of the ballast while continuing to operate it.

Abstract translation: 当在镇流器中检测到过温度条件时，镇流器的输出电流根据（i）阶跃函数或（ii）阶跃函数和连续函数的组合中的一个来检测，以便降低温度 镇流器，同时继续操作它。

公开(公告)号：WO2011044083A1

公开(公告)日：2011-04-14

申请号：PCT/US2010/051402

申请日：2010-10-05

Applicant: LUTRON ELECTRONICS CO., INC. ,  NUHFER, Matthew, W. ,  SHEARER, Thomas, M. ,  CHITTA, Venkatesh ,  IYER, Kartik ,  BIERY, Ethan Charles

Inventor： NUHFER, Matthew, W. ,  SHEARER, Thomas, M. ,  CHITTA, Venkatesh ,  IYER, Kartik ,  BIERY, Ethan Charles

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0845 ,  H05B33/0815 ,  H05B33/0824 ,  H05B33/0851 ,  H05B37/029 ,  Y02B20/346

Abstract: A configurable light-emitting diode (LED) driver is adapted to control a plurality of different LED light sources, which may be rated to operate using different load control techniques, different dimming techniques, and different magnitudes of load current and voltage. The LED driver comprises a power converter circuit for generating a DC bus voltage, and an LED drive circuit for receiving the bus voltage and adjusting either the magnitude of the current conducted through the LED light source or the magnitude of the voltage across the LED light source. The LED driver is operable to dim the LED light source using either a pulse-width modulation technique or a constant current reduction technique, and may be configured using a programming device and a personal computer.

Abstract translation: 可配置发光二极管（LED）驱动器适于控制多个不同的LED光源，其可以被评定为使用不同的负载控制技术，不同的调光技术和不同的负载电流和电压的大小进行操作。 LED驱动器包括用于产生DC总线电压的功率转换器电路和用于接收总线电压并调节通过LED光源传导的电流的大小或LED光源两端的电压的大小的LED驱动电路 。 LED驱动器可操作以使用脉冲宽度调制技术或恒定电流降低技术对LED光源进行调光，并且可以使用编程设备和个人计算机进行配置。

公开(公告)号：WO2008130840A1

公开(公告)日：2008-10-30

申请号：PCT/US2008/059662

申请日：2008-04-08

Applicant: LUTRON ELECTRONICS COMPANY, INC. ,  CHITTA, Venkatesh ,  DVORKIN, Elik ,  VESKOVIC, Dragan

Inventor： CHITTA, Venkatesh ,  DVORKIN, Elik ,  VESKOVIC, Dragan

IPC: H05B37/02 ,  H04L25/02

CPC classification number: H05B37/0254 ,  H04L25/028

Abstract: A communication circuit for an electronic dimming ballast provides high-voltage miswire protection and improved rise and fall times of a transmitted digital signal. The electronic dimming ballast comprises a control circuit, which is coupled to a digital communication link, for example, a DALI communication link, via the communication circuit. The communication circuit comprises a receiving circuit for detecting when the digital ballast communication link is shorted and for providing a received digital message to the control circuit. The communication circuit also comprises a transmitting circuit for shorting the communication link in response to the control circuit. The communication circuit also includes a high-voltage fault protection circuit for protecting the circuitry of the communication circuit if the communication circuit high- voltage mains voltages. The communication circuit is operable to reliably transmit digital messages having improved rise and fall times. The communication circuit draws acceptable amounts of current when the communication link is alternatively in idle and active states.

Abstract translation: 用于电子调光镇流器的通信电路提供高电压的不连线保护和改善发射的数字信号的上升和下降时间。 电子调光镇流器包括经由通信电路耦合到数字通信链路（例如，DALI通信链路）的控制电路。 通信电路包括一个接收电路，用于检测数字镇流器通信链路何时被短路，并向接收到的数字消息提供给控制电路。 通信电路还包括用于响应于控制电路使通信链路短路的发送电路。 通信电路还包括用于保护通信电路的电路的高压故障保护电路，如果通信电路是高压电源电压。 通信电路可操作地可靠地发送具有改善的上升和下降时间的数字消息。 当通信链路交替地处于空闲和活动状态时，通信电路吸收可接受的电流量。

公开(公告)号：WO2006119082A3

公开(公告)日：2007-05-31

申请号：PCT/US2006016382

申请日：2006-04-28

Applicant: LUTRON ELECTRONICS CO ,  CHITTA VENKATESH ,  VESKOVIC DRAGAN ,  TAIPALE MARK

Inventor： TAIPALE MARK

IPC: H05B41/16

CPC classification number: H05B41/2855

Abstract: An electronic ballast for driving a plurality of gas discharge lamps in parallel includes a rectifier to convert an AC mains input voltage to a rectified voltage, a filter circuit to convert the rectified voltage to a substantially DC bus voltage, an inverter to convert the DC bus voltage to a high-frequency AC voltage for driving the lamp, and an output stage for coupling the high-frequency AC voltage to the lamps. The ballast also includes a plurality of balancing transformers coupled to the lamps for balancing the currents in the lamps. When one of the parallel lamps is missing or faulty, a substantially large voltage is produced across one or more of the balancing transformers. This large voltage is detected by a missing-lamp detect circuit that provides a control signal to a ballast control circuit. In response to a detected missing-lamp condition, the control circuit stops the ballast from driving the lamps. Optionally, the ballast control circuit can transmit a message regarding the missing-lamp condition via an external communication link.

Abstract translation: 用于并行驱动多个气体放电灯的电子镇流器包括将AC电源输入电压转换为整流电压的整流器，将整流电压转换为基本上DC总线电压的滤波电路，将DC总线 电压到用于驱动灯的高频AC电压，以及用于将高频AC电压耦合到灯的输出级。 镇流器还包括耦合到灯的多个平衡变压器，用于平衡灯中的电流。 当并联灯之一丢失或故障时，跨越一个或多个平衡变压器产生大的电压。 这种大的电压由向镇流器控制电路提供控制信号的缺失灯检测电路检测。 响应于检测到的缺失灯状况，控制电路停止镇流器驱动灯。 可选地，镇流器控制电路可以经由外部通信链路发送关于缺少灯状况的消息。

公开(公告)号：WO2011044085A1

公开(公告)日：2011-04-14

申请号：PCT/US2010/051405

申请日：2010-10-05

Applicant: LUTRON ELECTRONICS CO., INC. ,  SHEARER, Thomas, M. ,  NUHFER, Matthew. W. ,  CHITTA, Venkatesh ,  IYER, Kartik ,  HOERTER, Nicholas A. ,  TAIPALE, Mark, S.

Inventor： SHEARER, Thomas, M. ,  NUHFER, Matthew. W. ,  CHITTA, Venkatesh ,  IYER, Kartik ,  HOERTER, Nicholas A. ,  TAIPALE, Mark, S.

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0845 ,  H05B33/0815 ,  H05B33/0824 ,  H05B33/0851 ,  H05B37/029 ,  Y02B20/346

Abstract: A load control circuit, such as a light-emitting diode (LED) driver, for controlling the amount of power delivered to electrical load, such as an LED light source, comprises a regulation transistor adapted to be coupled in series with the load, and a feedback circuit coupled in series with the regulation transistor, whereby the load control circuit is able to control the magnitude of a load current conducted through the load from a minimum load current to a maximum load current, which is at least approximately one thousand times larger than the minimum load current. The feedback circuit generates at least one load current feedback signal representative of the magnitude of the load current. The regulation transistor operates in the linear region to control the magnitude of the load current conducted through the load in response to the magnitude of the load current determined from the load current feedback signal.

Abstract translation: 诸如LED光源的用于控制传送到电负载的功率量的诸如发光二极管（LED）驱动器的负载控制电路包括适于与负载串联耦合的调节晶体管，以及 与调节晶体管串联耦合的反馈电路，由此负载控制电路能够将从负载传导的负载电流的大小从最小负载电流控制到最大负载电流，该最大负载电流为至少大约一千倍 比最小负载电流。 反馈电路产生代表负载电流大小的至少一个负载电流反馈信号。 调节晶体管在线性区域中操作以响应于从负载电流反馈信号确定的负载电流的大小来控制通过负载传导的负载电流的大小。