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公开(公告)号：US4894587A
公开(公告)日：1990-01-16
申请号：US45898
申请日：1987-05-04
IPC分类号： H05B41/392
CPC分类号： H05B41/3924 , Y10S315/04 , Y10S315/05
摘要： A high frequency dimming ballast dims to about 1 percent of rated output in a repeatable way so that parallel connected dimming ballasts will all produce the same light illumination when dimmed to a very low percentage of their rated light output. A first current sensor is connected in series with a semiconductor power switching device which is coupled to and controls power to the ballast. A second current sensor is connected directly to the lamp circuit to detect actual lamp current, particularly at low illumination conditions, for example at less than 10 percent of the rated light output. Lamp control under low illumination conditions is derived from the lamp current sensor and overrides control by the sensor in series with the transistor switch means.
摘要翻译： 高频调光镇流器以可重复的方式降至约1％的额定输出，使得并联连接的调光镇流器在调光到其额定光输出的非常低的百分比时都将产生相同的光照。 第一电流传感器与半导体功率开关器件串联连接，半导体功率开关器件与镇流器耦合并控制镇流器的功率。 第二电流传感器直接连接到灯电路以检测实际灯电流，特别是在低照度条件下，例如小于额定光输出的10％。 在低照度条件下的灯控制来自灯电流传感器，并且覆盖与晶体管开关装置串联的传感器的控制。
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公开(公告)号：US4207498A
公开(公告)日：1980-06-10
申请号：US966604
申请日：1978-12-05
申请人： Joel S. Spira , Dennis Capewell , David G. Luchaco
发明人： Joel S. Spira , Dennis Capewell , David G. Luchaco
IPC分类号： H05B41/392 , H05B41/26
CPC分类号： H05B41/392 , Y10S315/04
摘要： An illumination control system for gas discharge lamps which can be dimmed is provided in which a central inverter produces an output voltage at a high frequency which can be about 23 kHz. The amplitude of the inverter output is adjustable to dim the lamps. A transmission line consisting of spaced wires having respective thick insulation sheaths distributes the high frequency power to remotely located assemblies of ballasts and lamps. The ballasts consist of passive linear components. A high power factor rectifier network is disclosed for providing a d-c input to the inverter from the 50/60 Hz mains.
摘要翻译： 提供一种可以调光的气体放电灯的照明控制系统，其中中央逆变器产生高达23kHz的高频输出电压。 变频器输出的幅度可调，以使灯变暗。 由具有各自的厚绝缘护套的隔开的导线组成的传输线将高频功率分配到位于镇流器和灯的远程组件。 镇流器由无源线性元件组成。 公开了一种用于从50/60Hz电源向逆变器提供d-c输入的高功率因数整流器网络。
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公开(公告)号：US4558262A
公开(公告)日：1985-12-10
申请号：US473800
申请日：1983-03-09
IPC分类号： H05B41/38 , H05B41/392
CPC分类号： H05B41/3924 , H05B41/38 , H05B41/386
摘要： Individual banks of gas discharge lamps are provided with a common dimming control system. If a bank of lights is turned on while others are on and in a dimmed condition, the voltage applied to all lamps is increased over a relatively short period of time to full voltage to ensure the proper striking of the new bank of lamps but over a sufficiently long time period that users of the dimmed banks of lamps will not be noticeably affected by the change in lamp output. Full power is then maintained for a sufficiently long time to ensure proper lamp striking and stabilization and all banks are then very gradually returned to the original dimmed illumination condition which was set before the new lamp bank was energized. A long time delay and a short time delay are applied to respective inputs of a comparator to enable the initiation of the lamp striking sequence for the new lamp bank and prevents the initiation of the lamp striking sequence due to short time disturbances on the line.
摘要翻译： 气体放电灯的各个组别设有一个通用的调光控制系统。 如果一盏灯在其他灯处于亮起状态下亮起，则所有灯的施加电压在相对较短的时间内增加到全电压，以确保新的灯具组合正确地撞击 足够长的时间段，暗淡的灯具用户不会受到灯具输出变化的明显影响。 然后将全部功率保持足够长的时间，以确保适当的灯击和稳定性，并且所有存储体然后非常缓慢地恢复到在新的灯组通电之前设置的原始的调光照明条件。 对比较器的相应输入施加长时间延迟和短时间延迟，以使得能够启动新的灯组的灯击打序列，并且防止由于线路上的短时间干扰引起的灯击打序列的启动。
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公开(公告)号：US4207497A
公开(公告)日：1980-06-10
申请号：US966601
申请日：1978-12-05
申请人： Dennis Capewell , David G. Luchaco , Joel S. Spira
发明人： Dennis Capewell , David G. Luchaco , Joel S. Spira
IPC分类号： H05B41/392 , H05B41/26
CPC分类号： H05B41/392 , Y10S315/04
摘要： An illumination control system for gas discharge lamps which can be dimmed is provided in which a central inverter produces sinusoidal output voltage at about 23 kHz. The amplitude of the inverter output is adjustable to dim the lamps. A transmission line consisting of spaced wires having respective thick insulation sheaths distributes the high frequency power to remotely located assemblies of ballasts and lamps. A high power factor rectifier network is disclosed for providing a d-c input to the inverter from the 50/60 Hz mains. Several ballasts are disclosed, which consist principally of circuits using passive linear components. Some of the ballasts disclosed are conjugate ballasts which are those made of complex conjugate impedances which resonate with or near the input power frequency. Some ballasts disclosed are non-linear when the lamp is out in order to limit the open circuit voltage. The ballasts disclosed all have the following characteristics:(a) good power factor (above 0.8) and include at least one capacitor and one inductor;(b) are dimmable by at least 50% by a variable amplitude input having a substantially continuous wave form;(c) use only two input wires;(d) operate at a relatively high frequency (at least an order of magnitude above line frequency);(e) a good current crest factor.
摘要翻译： 提供一种可以调光的气体放电灯的照明控制系统，其中中央逆变器产生大约23kHz的正弦输出电压。 变频器输出的幅度可调，以使灯变暗。 由具有各自的厚绝缘护套的隔开的导线组成的传输线将高频功率分配到位于镇流器和灯的远程组件。 公开了一种用于从50/60Hz电源向逆变器提供d-c输入的高功率因数整流器网络。 公开了几个镇流器，其主要包括使用无源线性部件的电路。 公开的一些镇流器是共轭镇流器，它们是由与输入功率频率共振或接近输入功率频率的复共轭阻抗制成的。 为了限制开路电压，当灯熄灭时，所公开的一些镇流器是非线性的。 所公开的镇流器都具有以下特性：（a）功率因数（0.8以上），并且包括至少一个电容器和一个电感器; （b）通过具有基本连续波形的可变幅度输入可调光至少50％; （c）只使用两根输入线; （d）以相对高的频率工作（至少高于线路频率的数量级）; （e）良好的电流波峰因数。
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公开(公告)号：US4728866A
公开(公告)日：1988-03-01
申请号：US904874
申请日：1986-09-08
申请人： Dennis Capewell , Donald Hausman , Aaron Jungreis , Joel S. Spira
发明人： Dennis Capewell , Donald Hausman , Aaron Jungreis , Joel S. Spira
IPC分类号： H02M5/453 , H02M1/08 , H02M1/44 , H02M5/293 , H05B37/02 , H05B39/04 , H05B41/392 , H05B37/00
CPC分类号： H02M1/44 , H02M5/293 , H05B39/048 , H05B41/3924 , Y10S315/04
摘要： A power control system for gas discharge lamps and other loads. According to a preferred embodiment, the system includes a main divertor in series or parallel with the load, and a variable divertor, which includes a controllably conductive device controlled by a control circuit, the variable divertor being selectively inserted in series with the load during each half cycle of the output voltage signal. The system obtains an improved load voltage waveform giving superior performance under reduced power output conditions. This system can be applied to a fluorescent lighting circuit having a plurality of conventional ballasts, achieving a dimming ratio of greater than 4 to 1, and can also be applied to other gas discharge lamp circuits, including high intensity discharge lamp circuits, to incandescent lamps, and to motors such as fan motors. It can further be applied to control the power supplied to solid-state switching units, including those having capacitive inputs. The system produces a waveform having no sharp voltage changes, and thus virtually no audible noise emanates from the load. Radiated and conducted EMI are significantly lower than with existing controls. The advantageous waveform is generated while maintaining an efficiency greater than about 95 percent.
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公开(公告)号：US4663570A
公开(公告)日：1987-05-05
申请号：US642072
申请日：1984-08-17
申请人： David G. Luchaco , Dennis Capewell
发明人： David G. Luchaco , Dennis Capewell
IPC分类号： H05B41/392 , H05B37/02 , H05B39/04 , H05B41/36
CPC分类号： H05B41/3924 , Y10S315/04
摘要： A high frequency gas discharge lamp dimming ballast with good line power factor is disclosed. The unit is controlled by a current sensing loop which senses control switch current rather than lamp current and employs simple circuitry with sufficiently rapid control response necessary to maintain high line power factor and stable lamp operating characteristics over a very wide range of light output. An isolated output transformer provides protection against most common miswire conditions and accurately regulates lamp energy over a wide range of input and lamp arc voltage conditions. A pulse width modulated control input provides an isolated control input for easier wiring and reduces the susceptibility of the control to noise interference.
摘要翻译： 公开了具有良好线路功率因数的高频气体放电灯调光镇流器。 该单元由感应控制开关电流而不是灯电流的电流感测回路控制，并且采用具有足够快速控制响应的简单电路，以在非常宽的光输出范围内保持高线路功率因数和稳定的灯工作特性。 一个隔离的输出变压器提供了保护，防止大多数通用的错线条件，并在宽范围的输入和灯电弧电压条件下精确地调节灯泡能量。 脉宽调制控制输入提供了一个隔离的控制输入，便于布线，并降低了控制对噪声干扰的敏感性。
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公开(公告)号：US4527099A
公开(公告)日：1985-07-02
申请号：US473799
申请日：1983-03-09
申请人： Dennis Capewell , David G. Luchaco , Joel S. Spira
发明人： Dennis Capewell , David G. Luchaco , Joel S. Spira
CPC分类号： H05B41/392 , H05B41/3924 , Y10S315/05 , Y10S315/07
摘要： A gas discharge lamp control circuit for an inductive ballast includes anti-parallel connected controlled rectifiers connected in series with the a.c. source and the ballast and anti-parallel connected controlled rectifiers which are connected in series with a current limiting and energy diversion capacitor and in shunt with the ballast. The controlled rectifiers of the series and shunt switching assemblies are controlled so that, in any given half wave, the related controlled rectifier of the shunt switching means turns on to discharge a capacitor into the normally conducting controlled rectifier of the series switching means to produce a notch in the voltage wave form applied to the inductive ballast. The capacitor acts as a current limiting impedance and acts to permit reversal of the voltage during the notch interval in the input voltage to the ballast, thereby to increase the RMS content of the voltage wave form. An automatic low end dim setting circuit maintains the low end setting regardless of the type of lamp or ballast which is employed. A notch signal generating circuit is provided which employs two phase-shifted signals fed into a comparator and compared to a common reference level.
摘要翻译： 用于电感镇流器的气体放电灯控制电路包括与直流连接的反并联连接的受控整流器。 源极和镇流器和反并联的可控整流器，其与限流和能量分流电容器串联连接，并与镇流器分流。 控制串联和分流开关组件的受控整流器，使得在任何给定的半波中，分流开关装置的相关可控整流器导通，将电容器放电到串联开关装置的正常导通的受控整流器中，以产生 施加到电感镇流器的电压波形中的缺口。 电容器用作限流阻抗，并且用于允许在镇流器的输入电压期间的陷波间隔期间反转电压，从而增加电压波形的RMS含量。 自动低端调光设置电路保持低端设置，而不管使用的灯泡或镇流器的类型如何。 提供了一种陷波信号发生电路，其采用馈送到比较器中并与公共参考电平进行比较的两个相移信号。
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公开(公告)号：US4350935A
公开(公告)日：1982-09-21
申请号：US135091
申请日：1980-03-28
申请人： Joel S. Spira , David G. Luchaco , Dennis Capewell
发明人： Joel S. Spira , David G. Luchaco , Dennis Capewell
IPC分类号： H05B41/392 , H05B41/16
CPC分类号： H05B41/3924 , Y10S315/04
摘要： The input energy to a gas discharge lamp is controlled over a given range to obtain output light regulation in a controlled fashion for different kinds of gas discharge lamps, including fluorescent lamps, high intensity discharge lamps and others associated with any type ballast, including conventional non-dimming type ballasts. A suitable circuit switches each half wave of an input a-c wave form from some instantaneous value greater than zero to a substantially zero value and then back to a value greater than zero one or more times in each half cycle. The time duration of the substantially zero energy interval is varied to vary the total energy applied to the gas discharge lamps. In a preferred embodiment, a first high speed electronic switch is connected in series with the a-c source and lamp ballast and a high speed electronic shunt switch is connected across the a-c line and ballast input. The series switch is opened to produce the zero energy interval. Simultaneously with the opening of the series switch, the shunt switch is closed to allow discharge of energy stored in the reactive components of the ballast into the lamp. When the series switch is reclosed, the shunt switch is simultaneously opened. Other embodiments are described which include the use of passive energy divertors in place of the shunt switches or across the series switch. Numerous protective circuits protect the control circuit, the lamp and ballast, and the a-c line.
摘要翻译： 将气体放电灯的输入能量控制在给定的范围内，以适应不同种类的气体放电灯（包括荧光灯，高强度放电灯等）与任何类型的镇流器相关的气体放电灯， 调光型镇流器。 合适的电路将输入a-c波形的每个半波从大于零的一些瞬时值切换到基本为零的值，然后在每个半周期内返回到大于零的值一次或多次。 基本上零能量间隔的持续时间被改变以改变施加到气体放电灯的总能量。 在优选实施例中，第一高速电子开关与a-c源和灯镇流器串联连接，并且高速电子分流开关连接在a-c线路和镇流器输入端。 串联开关打开以产生零能量间隔。 在串联开关打开的同时，分流开关闭合，以将储存在镇流器的电抗性部件中的能量放电到灯中。 当串联开关重新闭合时，分流开关同时打开。 描述了其他实施例，其包括使用无源能量偏滤器来代替分流开关或跨串联开关。 许多保护电路保护控制电路，灯和镇流器以及a-c线。
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公开(公告)号：US4210846A
公开(公告)日：1980-07-01
申请号：US966643
申请日：1978-12-05
申请人： Dennis Capewell , David G. Luchaco , Joel S. Spira
发明人： Dennis Capewell , David G. Luchaco , Joel S. Spira
IPC分类号： H05B41/392 , H02M7/515 , H05B41/29 , H05B41/39
CPC分类号： H05B41/392 , Y10S315/04 , Y10S315/05
摘要： An illumination control system for gas discharge lamps which can be dimmed is provided in which a central inverter produces a sinusoidal output voltage at about 23 kHz. The amplitude of the inverter output is adjustable to dim the lamps. A transmission line consisting of spaced wires having respective thick insulation sheaths distributes the high frequency power to remotely located assemblies of ballasts and lamps. The ballasts consist of passive linear components. A high power factor rectifier network is disclosed for providing a d-c input to the inverter from the 50/60 Hz mains. The inverter circuit is provided with novel controls for gradual start-up and turn-off and is protected against load fault currents and internal fault currents. Automatic and manual resets are provided for internal fault current and load fault current, respectively. The basic inverter circuit consists of two alternately conducting controllably conductive power switching devices. Each is in parallel with a respective oppositely poled diode. The input d-c power line is connected in series with the series-connected power switching devices. A single series tuned circuit is connected in series with an output circuit element and is connected across one of the power switching devices. The amplitude of the inverter output is controlled by adjusting the phase at which the power switching devices turn on. In another embodiment, a single power switching device is used for the inverter circuit.
摘要翻译： 提供一种可以调光的气体放电灯的照明控制系统，其中中央逆变器产生大约23kHz的正弦输出电压。 变频器输出的幅度可调，以使灯变暗。 由具有各自的厚绝缘护套的隔开的导线组成的传输线将高频功率分配到位于镇流器和灯的远程组件。 镇流器由无源线性元件组成。 公开了一种用于从50/60Hz电源向逆变器提供d-c输入的高功率因数整流器网络。 为逆变电路提供了逐步启动和关断的新型控制，可以防止负载故障电流和内部故障电流。 分别为内部故障电流和负载故障电流提供自动和手动复位。 基本的逆变器电路由两个交替导电的可控导电功率开关器件组成。 每个与相应的极化二极管并联。 输入d-c电源线与串联的电源开关器件串联。 单个串联调谐电路与输出电路元件串联连接，并且跨越一个功率开关器件连接。 通过调节功率开关器件导通的相位来控制逆变器输出的幅度。 在另一个实施例中，单个功率开关装置用于逆变器电路。
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公开(公告)号：US4222096A
公开(公告)日：1980-09-09
申请号：US966603
申请日：1978-12-05
申请人： Dennis Capewell
发明人： Dennis Capewell
CPC分类号： H02M1/4208 , H02M7/066 , H02M1/4266 , Y02B70/123
摘要： A d-c power supply is described which is energized from a relatively low frequency power source and produces a d-c output voltage with low ripple and high power factor. An inductance-capacitance circuit is connected in series with the a-c source and the a-c side of the rectifying element. A filter capacitor is connected to the d-c side of the rectifying element. The inductance-capacitance circuit resonates at a frequency of about three to six times the frequency of the input power supply. A plurality of circuits for carrying out the invention are disclosed.
摘要翻译： 描述了从相对低频电源通电的d-c电源，并产生具有低纹波和高功率因数的d-c输出电压。 电感电容电路与整流元件的a-c源和a-c侧串联连接。 滤波电容器连接到整流元件的d-c侧。 电感 - 电容电路以大约输入电源频率的三到六倍的频率谐振。 公开了用于实施本发明的多个电路。
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