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    • 1. 发明授权
    • Electronic dimming ballast having advanced boost converter control
    • 电子调光镇流器具有先进的升压转换器控制
    • US08593076B2
    • 2013-11-26
    • US13212773
    • 2011-08-18
    • Dragan Veskovic
    • Dragan Veskovic
    • H05B37/00H05B39/00H05B41/14H05B37/02H05B39/04H05B41/36H05B41/16H05B41/24
    • H05B41/295
    • An electronic ballast for driving a gas discharge lamp includes a power converter for generating a DC bus voltage, where the bus voltage is controlled to different magnitudes during different operating modes of the ballast. The ballast comprises a control circuit that is coupled to the power converter for adjusting the magnitude of the bus voltage to a first magnitude when the lamp is off, to a second magnitude when preheating filaments of the lamp, and to a third magnitude when the lamp is on. The control circuit is also operable to preemptively adjust the magnitude of the bus voltage prior to changing modes of operation. For example, when turning the load on, the control circuit first adjusts a power-conversion-drive level of the power converter to begin adjusting the magnitude of the bus voltage towards a predetermined magnitude, and then waits for a predetermined time period before attempting to turn the load on.
    • 用于驱动气体放电灯的电子镇流器包括用于产生DC总线电压的功率转换器,其中在镇流器的不同操作模式期间总线电压被控制到不同的幅度。 镇流器包括控制电路,其耦合到功率转换器,用于当灯关闭时将总线电压的幅度调整到第一幅度,当预热灯的灯丝时达到第二幅度,并且当灯泡 是在。 控制电路还可操作以在改变操作模式之前先预先调节总线电压的大小。 例如,当打开负载时,控制电路首先调整功率转换器的功率转换驱动电平,以开始将总线电压的幅度调整到预定的大小,然后在尝试之前等待预定的时间段 打开负载。
    • 3. 发明授权
    • Distributed intelligence ballast system
    • 分布式智能镇流器系统
    • US08035529B2
    • 2011-10-11
    • US12055976
    • 2008-03-26
    • Dragan VeskovicRobert AnselmoAudwin W. CashMatthew A. Skvoretz
    • Dragan VeskovicRobert AnselmoAudwin W. CashMatthew A. Skvoretz
    • H04L7/00
    • H05B37/0254H05B41/38
    • A ballast for use in a multi-ballast lighting system wherein the ballasts are coupled together by a digital communication network. The ballast comprises a power circuit portion for providing an electrical current to power a lamp. The ballast further includes a sensor input circuit for receiving at least one sensor input from a sensor device, a processor receiving an input from the sensor input circuit and providing control signals to control the operation of the ballast, and a communication port coupled to the processor and to the communication network for exchanging data. The ballast processor is operative to receive a serial data that has a portion defining whether the message is in a first or a second format, the first format comprising a DALI standard format and the second format comprising a format providing extended functionality. The ballast processor is capable of processing messages in either the first or second formats.
    • 一种用于多镇流照明系统的镇流器,其中镇流器通过数字通信网络耦合在一起。 镇流器包括用于提供电流来为灯供电的电源电路部分。 所述镇流器还包括用于接收来自传感器装置的至少一个传感器输入的传感器输入电路,处理器从所述传感器输入电路接收输入并提供控制信号以控制所述镇流器的操作,以及连接到所述处理器的通信端口 以及用于交换数据的通信网络。 镇流器处理器可操作以接收具有定义消息是处于第一还是第二格式的部分的串行数据,第一格式包括DALI标准格式,第二格式包括提供扩展功能的格式。 镇流器处理器能够以第一或第二格式处理消息。
    • 4. 发明申请
    • Method of Controlling an Electronic Dimming Ballast During Low Temperature Conditions
    • 在低温条件下控制电子调光镇流器的方法
    • US20110241561A1
    • 2011-10-06
    • US12955988
    • 2010-11-30
    • Venkatesh ChittaMehmet OzbekJonathan Robert QuayleMark S. TaipaleDragan Veskovic
    • Venkatesh ChittaMehmet OzbekJonathan Robert QuayleMark S. TaipaleDragan Veskovic
    • H05B41/16
    • H05B41/3921H05B41/3925
    • 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.
    • 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灯的强度的闪烁和闪烁。 镇流器电路包括用于接收直流母线电压并用于产生高频输出电压的反相器电路,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的控制电路 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低到低温阈值以下,则增加灯的最小强度。 此外,镇流器电路还可以包括温度检测电路,其可操作以产生表示灯的灯温度的控制信号。
    • 6. 发明申请
    • ELECTRICALLY CONTROLLABLE WINDOW TREATMENT SYSTEM TO CONTROL SUN GLARE IN A SPACE
    • 电控可控窗口处理系统,用于控制空间中的蓝光
    • US20100006241A1
    • 2010-01-14
    • US12541618
    • 2009-08-14
    • Dragan Veskovic
    • Dragan Veskovic
    • E05F15/20
    • E06B9/32E06B9/68H05B37/0209H05B37/0218Y02A30/257Y02B20/46Y02B80/50Y10S362/802
    • A system for reducing sun glare through an opening into a space, the system comprising an electrically controllable window treatment operable to alter the amount of daylight entering the space through the opening; a first sensor mounted within the space and characterized by a sensor gain, the first sensor operable to sense a level of illumination in the space; and a control system operable: to compare the sensed illumination level in the space to a dead-band having upper and lower thresholds; to adjust during a time period when glare from the sun can occur through the opening at least one of: (a) the upper threshold of the dead-band, (b) the lower threshold of the dead-band, and (c) the sensor gain of the first sensor; and to adjust the window treatment in response to the sensed level of illumination to reduce the sun glare.
    • 一种用于通过开口将太阳眩光减少到空间中的系统,该系统包括可操作的电可控窗口处理,可操作以改变通过开口进入空间的日光量; 第一传感器,其安装在所述空间内并以传感器增益为特征,所述第一传感器可操作以感测所述空间中的照明水平; 以及控制系统,其可操作:将所述空间中感测的照明级别与具有上限阈值和下限阈值的死区进行比较; 在一段时间内,通过打开至少一个来自太阳的眩光可以进行调节:(a)死区的上限阈值,(b)死区的下限阈值,以及(c) 第一传感器的传感器增益; 并根据感​​测到的照明水平来调整窗户处理以减少太阳眩光。
    • 7. 发明授权
    • Electronic ballast having a flyback cat-ear power supply
    • 具有回扫猫耳电源的电子镇流器
    • US07432661B2
    • 2008-10-07
    • US11120230
    • 2005-05-02
    • Mark S. TaipaleVenkatesh ChittaDragan Veskovic
    • Mark S. TaipaleVenkatesh ChittaDragan Veskovic
    • H05B37/02G05F1/00
    • H05B41/282Y02B20/183
    • An electronic ballast for driving a gas discharge lamp includes a rectifier to convert an AC mains input voltage to a rectified voltage, a valley-fill circuit for producing a DC bus voltage, an inverter for converting the DC bus voltage to a high-frequency AC voltage for driving the lamp, a control circuit for controlling the inverter, and a flyback cat-ear power supply for supplying current to the inverter when the rectified voltage is less than a predetermined level. The flyback cat-ear power supply also provides power to the control circuit. Preferably, the flyback cat-ear power supply draws current only when the inverter is not drawing current directly from the AC mains, so as to make the input current to the ballast substantially sinusoidal. The result is a ballast having substantially improved power factor and THD. Also, the ballast operates more efficiently because the flyback cat-ear ear power supply supplies excess energy not needed by the ballast control circuitry to the inverter to be used to drive the lamp.
    • 用于驱动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,用于产生DC总线电压的谷底填充电路,用于将DC总线电压转换为高频AC的逆变器 用于驱动灯的电压,用于控制逆变器的控制电路和用于在整流电压小于预定电平时向逆变器提供电流的回扫式猫耳电源。 反激式猫耳电源还为控制电路提供电源。 优选的是,只有当逆变器没有直接从交流电源引出电流时,回扫式猫耳电源才能产生电流,以使输入电流达到镇流器基本正弦。 结果是具有明显改善的功率因数和THD的镇流器。 此外,镇流器更有效地运行,因为回扫式耳塞式电源将镇流器控制电路不需要的多余能量提供给用于驱动灯的逆变器。
    • 8. 发明申请
    • Ballast having multiple circuit failure protection and method for ballast circuit protection
    • 镇流器具有多路电路故障保护和镇流器电路保护方法
    • US20060125417A1
    • 2006-06-15
    • US11011253
    • 2004-12-14
    • Donald MosebrookDragan Veskovic
    • Donald MosebrookDragan Veskovic
    • H05B37/02
    • H05B41/2856Y10S315/07
    • A ballast for a gas discharge lamp comprising a first circuit portion for providing power to a lighting load and a second circuit portion for processing data exchanged with a communication link, the first circuit portion receiving power from an AC main supply for conversion to a form suitable to supply power to the lamp, and the second circuit portion having a power supply supplied from the AC main supply, the power supply being coupled at the input of the AC main supply to the first circuit portion, further comprising a first protection circuit coupled in series with the AC main supply for protecting the first and second circuit portions in the event of an electrical circuit failure leading to an overcurrent condition, the power supply for the second circuit portion being coupled such that it is protected by the first protection circuit; further comprising a second protection circuit disposed in series with the first circuit portion and providing protection only in the event of electrical failure leading to an overcurrent condition in the first circuit portion; the second protection circuit adapted so that in the event of electrical failure in the first circuit portion, the second protection circuit will discontinue the supply of current to the first circuit portion, thereby preventing an overcurrent in the first protection circuit that would cause the first protection to interrupt current, and thereby allowing the first protection circuit to continue to supply electrical current to the second circuit portion.
    • 一种用于气体放电灯的镇流器,包括用于向照明负载提供电力的第一电路部分和用于处理与通信链路交换的数据的第二电路部分,所述第一电路部分从AC主电源接收电力以转换为适合的形式 为了向灯供电,并且第二电路部分具有从AC主电源供应的电源,电源在AC主电源的输入处耦合到第一电路部分,还包括耦合在第一电路部分中的第一保护电路 串联有AC主电源,用于在导致过电流状况的电路故障的情况下保护第一和第二电路部分,第二电路部分的电源被耦合,使得它被第一保护电路保护; 还包括与所述第一电路部分串联设置的第二保护电路,并且仅在导致第一电路部分中的过电流状况的电气故障的情况下提供保护; 所述第二保护电路适于使得在所述第一电路部分发生电气故障的情况下,所述第二保护电路将停止向所述第一电路部分供电,从而防止所述第一保护电路中将导致所述第一保护的过电流 以中断电流,从而允许第一保护电路继续向第二电路部分提供电流。
    • 10. 发明申请
    • Load Control Device for a Light-Emitting Diode Light Source
    • 用于发光二极管光源的负载控制装置
    • US20130063047A1
    • 2013-03-14
    • US13416741
    • 2012-03-09
    • Dragan Veskovic
    • Dragan Veskovic
    • H05B37/02
    • H05B33/0815H05B33/0824H05B33/0848
    • An LED driver for controlling the intensity of an LED light source includes a power converter circuit for generating a DC bus voltage, an LED drive circuit for receiving the bus voltage and controlling a load current through, and thus the intensity of, the LED light source, and a controller operatively coupled to the power converter circuit and the LED drive circuit. The LED drive circuit comprises a controllable-impedance circuit adapted to be coupled in series with the LED light source. The controller adjusts the magnitude of the bus voltage to a target bus voltage and generates a drive signal for controlling the controllable-impedance circuit. To adjust the intensity of the LED light source, the controller controls both the magnitude of the load current and the magnitude of the regulator voltage. The controller controls the magnitude of the regulator voltage by simultaneously maintaining the magnitude of the drive signal constant and adjusting the target bus voltage.
    • 用于控制LED光源的强度的LED驱动器包括用于产生DC总线电压的功率转换器电路,用于接收总线电压并控制负载电流的LED驱动电路,并且因此控制LED光源的强度 以及可操作地耦合到功率转换器电路和LED驱动电路的控制器。 LED驱动电路包括适于与LED光源串联耦合的可控阻抗电路。 控制器将总线电压的大小调整为目标总线电压,并产生用于控制可控阻抗电路的驱动信号。 为了调整LED光源的强度,控制器控制负载电流的大小和调节器电压的大小。 控制器通过同时保持驱动信号的幅值恒定并调节目标总线电压来控制调节器电压的幅度。