Circuit for pulsed operation of a discharge lamp
    1.
    发明授权
    Circuit for pulsed operation of a discharge lamp 失效
    放电灯的脉冲操作电路

    公开(公告)号:US5726537A

    公开(公告)日:1998-03-10

    申请号:US622568

    申请日:1996-03-25

    摘要: To provide for automatic switch-over between a power phase and a holding se in operation of a discharge lamp (EL), a choke or ballast coil (L), serially connected to the discharge lamp, is constructed to have, with respect to current flow therethrough, a non-linear reactance value; the choke or ballast coil is wound on a core which, for example, can be a E-core in which the center leg is of reduced cross-section with respect to the outer legs; or, if one is a torroidal coil on a ring core, the ring core is preferably made of two core elements of different magnetic characteristics, connected together, for example by an adhesive, in which one core element is of low permeability material, such as iron powder or permaloy with high saturation magnetization, and a second core is formed of ferrite with low saturation magnetization. Current flow through the coil and the serially connected lamp is controlled by alternately operating switch elements (S1, S2), typically insulated gate bipolar transistors, to supply power bursts of, for example, between 20 and 30 A during a second operating phase, separated by a first operating phase of between 0.3 A and 0.5 A at a substantially higher frequency than the frequency of the power bursts, and lasting 10 to 30 times as long as the power bursts. An ignition circuit (Z, L-CR) is provided to start or fire the lamp.

    摘要翻译: 为了在放电灯(EL)的操作中提供功率相位和保持相位之间的自动切换,串联连接到放电灯的扼流圈或镇流线圈(L)被构造为具有相对于电流 流过其中,非线性电抗值; 扼流器或镇流器线圈缠绕在例如可以是中心腿相对于外腿的横截面减小的E型芯的芯上; 或者,如果在环形芯上是环形线圈,则环芯优选地由具有不同磁特性的两个核心元件制成,例如通过粘合剂连接在一起,其中一个芯元件是低磁导率材料,例如 具有高饱和磁化强度的铁粉或坡莫洛,第二芯由具有低饱和磁化强度的铁素体形成。 通过线圈和串联连接的灯的电流通过交替操作开关元件(S1,S2)(通常是绝缘栅双极晶体管)来控制,以在第二操作阶段期间提供例如在20和30A之间的功率脉冲串,分离 通过以比功率突发的频率更高的频率在0.3A和0.5A之间的第一操作阶段,并且持续10至30倍的功率突发。 提供点火电路(Z,L-CR)来启动或起动灯泡。

    Discharge lamp typically a sodium high-pressure discharge lamp, from an
a-c power network
    2.
    发明授权
    Discharge lamp typically a sodium high-pressure discharge lamp, from an a-c power network 失效
    放电灯通常是来自a-c电力网络的钠高压放电灯

    公开(公告)号:US5739644A

    公开(公告)日:1998-04-14

    申请号:US399750

    申请日:1995-03-07

    摘要: To provide for effective control of a discharge lamp, typically, a sodium gh pressure discharge lamp, which operates in two phases, namely, a power pulse phase, followed by a holding phase, without extensive and complex electronic circuitry, two individual oscillator systems are provided, one for each phase; the oscillator systems include a first power burst oscillator formed as a first half bridge by two transistors (T1, T2), and an individual connecting current limiting inductance (L1) to the lamp (E), and a second oscillator including a two-transistor second half bridge (T3, T4) and an individual current limiting inductance (L2) coupled to the lamp. The respective oscillators are controlled, in a closed control loop, by a burst generator (BG) and a holding pulse generator (SG), each of which provide their signals to a logic circuit (LK) which provides for exclusive control of the respective first or second half bridge. A lamp voltage sensing circuit (C4, R2) taps lamp operating voltage, which is compared with a command signal to control through a repetition frequency control generator (WG), the recurrence rate of the bursts from the power bursts generator (BG). The lamp starting circuit (4) can also be controlled from the sensed signal by comparison with a reference in a second comparator (K) and suitably applied to an ignition circuit by an ignition monitoring logic. A pair of electrolytic capacitors of essentially the same value is connected across the d-c supply and their midjunction to the lamp.

    摘要翻译: 为了提供有效控制放电灯(通常为两相工作的钠高压放电灯),即功率脉冲相位,随后是保持阶段,没有广泛和复杂的电子电路,两个单独的振荡器系统是 为每个阶段提供一个; 振荡器系统包括通过两个晶体管(T1,T2)形成为第一半桥的第一功率脉冲串振荡器和与灯(E)的单独的连接限流电感(L1),以及包括双晶体管 第二半桥(T3,T4)和耦合到灯的单独的限流电感(L2)。 相应的振荡器在封闭的控制回路中被脉冲串发生器(BG)和保持脉冲发生器(SG)控制,每个脉冲发生器(SG)向逻辑电路(LK)提供信号,逻辑电路(LK)提供对相应的第一 或后半桥。 灯电压检测电路(C4,R2)将灯操作电压与通过重复频率控制发生器(WG)控制的命令信号进行比较,来自功率脉冲串发生器(BG)的脉冲串的再现速率。 灯启动电路(4)也可以通过与第二比较器(K)中的参考值进行比较,从感测信号进行控制,并通过点火监控逻辑适当地施加到点火电路。 一对基本相同值的电解电容器连接在d-c电源及其与中间连接的灯上。

    Gas turbine combustor including an acoustic damper device
    4.
    发明授权
    Gas turbine combustor including an acoustic damper device 有权
    包括声阻尼装置的燃气轮机燃烧器

    公开(公告)号:US08635874B2

    公开(公告)日:2014-01-28

    申请号:US13424839

    申请日:2012-03-20

    IPC分类号: F02C7/24

    摘要: An exemplary combustor includes at least a portion having an inner liner and an outer cover plate, which together form an interposed cooling chamber. A plurality of hollow elements extend from the liner and protrude into the cooling chamber. Each hollow element defines a damping volume connected to an inner volume of the combustion chamber via a calibrated duct. During operation, the hollow elements damp pressure pulsations and, in addition, also transfer heat.

    摘要翻译: 示例性燃烧器包括至少一部分,其具有内衬和外盖板,它们一起形成插入的冷却室。 多个中空元件从衬套延伸并突出到冷却室中。 每个中空元件通过校准的管道限定连接到燃烧室的内部容积的阻尼体积。 在操作过程中,中空元件阻尼压力脉动,另外也传递热量。

    Lighting system and method for operating a lighting system
    5.
    发明授权
    Lighting system and method for operating a lighting system 有权
    照明系统和操作照明系统的方法

    公开(公告)号:US08585212B2

    公开(公告)日:2013-11-19

    申请号:US12300928

    申请日:2007-05-02

    摘要: A lighting system comprising a first light source, which is adapted to generate light of a first color, and at least one second light source, which is adapted to generate light of a second color, wherein the light sources are driven so as to generate a predeterminable color sequence, wherein the light sources are operated by a common control unit and driven by said control unit in the sequence required for generating the predeterminable color sequence. The light sources are connected in parallel and are electrically coupled to an energy supply unit via a first circuit node. The lighting system comprises a regulator unit and coupled to the control unit via a signal line, and wherein the control unit is adapted to predetermine a desired energy output of the energy supply unit via the regulator unit, to be precise depending on the individual color within the color sequence.

    摘要翻译: 一种照明系统,包括适于产生第一颜色的光的第一光源和适于产生第二颜色的光的至少一个第二光源,其中所述光源被驱动以产生 可预定的颜色序列,其中光源由公共控制单元操作并由所述控制单元按照产生可预定颜色序列所需的顺序驱动。 光源并联连接并通过第一电路节点电耦合到能量供应单元。 所述照明系统包括调节器单元,并经由信号线耦合到所述控制单元,并且其中所述控制单元适于经由所述调节器单元预先确定所述能量供应单元的期望能量输出,所述能量输出根据所述单独的颜色 颜色序列。

    Circuit arrangement for operating discharge lamps and method for operating discharge lamps
    6.
    发明授权
    Circuit arrangement for operating discharge lamps and method for operating discharge lamps 有权
    操作放电灯的电路装置及放电灯的操作方法

    公开(公告)号:US08362708B2

    公开(公告)日:2013-01-29

    申请号:US12602179

    申请日:2007-06-14

    IPC分类号: H05B37/02

    摘要: A circuit arrangement for operating a discharge lamp is provided. The circuit arrangement may include a commutating device, which is configured to exhibit an input which is coupled to a direct-current source and has an output which can be coupled to a discharge lamp; the commutating device being configured in such a manner that it couples the direct-current source to the output and the polarity with which the direct-current source is coupled to the output can be commutated by a control device; the control device including a measurement input which is coupled to a measuring device which is configured to deliver a measurement value which is a measure of the magnitude of a lamp voltage; wherein the control device is configured to control the commutating device in such a manner that the polarity at which a higher lamp voltage prevails is coupled longer to the output.

    摘要翻译: 提供了用于操作放电灯的电路装置。 电路装置可以包括整流装置,其被配置为展现耦合到直流电源的输入端并具有能够耦合到放电灯的输出端; 所述换向装置被构造成使得其将所述直流源耦合到所述输出,并且所述直流源耦合到所述输出的极性可由控制装置换向; 所述控制装置包括耦合到测量装置的测量输入,所述测量装置被配置为传送作为灯电压的大小的量度的测量值; 其中所述控制装置被配置为以这样的方式控制所述换向装置,使得较高的灯电压占优势的极性与所述输出更长地耦合。

    Illuminating system having sequential color filtering and a high-pressure discharge lamp
    7.
    发明授权
    Illuminating system having sequential color filtering and a high-pressure discharge lamp 有权
    具有顺序滤色的照明系统和高压放电灯

    公开(公告)号:US08339061B2

    公开(公告)日:2012-12-25

    申请号:US10522896

    申请日:2004-04-26

    IPC分类号: H05B37/02

    CPC分类号: H04N9/3114 H04N9/315

    摘要: The invention relates to a novel operating method and corresponding ballast for illuminating systems having temporally sequential color filtering and a high-pressure discharge lamp operated by alternating current. In this case, at least three commutations of the lamp current are used within a color filtering sequence, in order to be able to operate the lamp advantageously without an excessive increase in the operating frequency of the color filter system.

    摘要翻译: 本发明涉及一种新颖的操作方法和相应的镇流器,用于具有时间顺序彩色滤光的照明系统和由交流电操作的高压放电灯。 在这种情况下,在彩色滤光序列中使用灯电流的至少三次换向,以便能够有利地操作灯,而不会过度增加滤色器系统的工作频率。