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公开(公告)号：US20100171435A1
公开(公告)日：2010-07-08
申请号：US12714972
申请日：2010-03-01
IPC分类号： H05B37/02
CPC分类号： H05B41/2856 , H05B41/2986
摘要： 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.
摘要翻译： 当在镇流器中检测到过温条件时，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之一被检测，以便降低温度 镇流器，同时继续操作它。
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2.发明申请Method of Controlling an Electronic Dimming Ballast During Low Temperature Conditions 审中-公开在低温条件下控制电子调光镇流器的方法公开(公告)号：US20110241561A1
公开(公告)日：2011-10-06
申请号：US12955988
申请日：2010-11-30
IPC分类号： H05B41/16
CPC分类号： H05B41/3921 , H05B41/3925
摘要： 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.
摘要翻译： 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。
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3.发明授权Method and apparatus for measuring operating characteristics in a load control device 有权用于测量负载控制装置中的工作特性的方法和装置公开(公告)号：US08629624B2
公开(公告)日：2014-01-14
申请号：US13212556
申请日：2011-08-18
申请人： Venkatesh Chitta , Jonathan Robert Quayle , Alexander J. Rovnan , Mark S. Taipale , Dragan Veskovic
发明人： Venkatesh Chitta , Jonathan Robert Quayle , Alexander J. Rovnan , Mark S. Taipale , Dragan Veskovic
IPC分类号： H05B37/02 , H05B39/04 , H05B41/36 , H05B37/00 , H05B39/00 , H05B41/14 , H05B41/16 , H05B41/24 , H05B41/00
CPC分类号： H05B41/24 , H05B37/00 , H05B41/295 , H05B41/38
摘要： A load control device, such as an electronic ballast, for controlling the power delivered from an AC power source to an electrical load, such as one or more fluorescent lamps, comprises a power converter having an inductor and a power switching device coupled to the inductor, a load control circuit adapted to be coupled to the electrical load, and a control circuit operable to calculate an average input power of the load control device. The control circuit may be operable to calculate a cumulative output power of the power converter while the ballast is preheating filaments of the lamps, and to subsequently determine a fault condition in the lamps in response to the calculated cumulative output power of the power converter. Further, the control circuit may be operable to transmit a digital message including the calculated average input power of the load control device.
摘要翻译： 用于控制从AC电源传递到诸如一个或多个荧光灯的电负载的功率的诸如电子镇流器的负载控制装置包括具有耦合到电感器的电感器和功率开关装置的功率转换器 ，适于耦合到所述电负载的负载控制电路，以及可操作以计算所述负载控制装置的平均输入功率的控制电路。 控制电路可以可操作以在镇流器预热灯的灯丝时计算功率转换器的累积输出功率，并且随后响应于所计算的功率转换器的累积输出功率来确定灯中的故障状况。 此外，控制电路可以用于发送包括计算出的负载控制装置的平均输入功率的数字消息。
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4.发明授权公开(公告)号：US08384297B2
公开(公告)日：2013-02-26
申请号：US12858662
申请日：2010-08-18
IPC分类号： H05B41/36
CPC分类号： H05B41/295 , H05B41/2825 , H05B41/3925 , H05B41/3927
摘要： 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 in response to the 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.
摘要翻译： 用于驱动气体放电灯的电子镇流器包括逆变器电路，谐振回路和控制电路，其可操作以确定谐振回路的谐振频率的近似值，并且响应于近似的 谐振频率。 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。
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公开(公告)号：US07940015B2
公开(公告)日：2011-05-10
申请号：US12714972
申请日：2010-03-01
IPC分类号： G05F1/00
CPC分类号： H05B41/2856 , H05B41/2986
摘要： 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.
摘要翻译： 当在镇流器中检测到过温条件时，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之一被检测，以便降低温度 镇流器，同时继续操作它。
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6.发明申请公开(公告)号：US20120043903A1
公开(公告)日：2012-02-23
申请号：US12858662
申请日：2010-08-18
CPC分类号： H05B41/295 , H05B41/2825 , H05B41/3925 , H05B41/3927
摘要： 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 in response to the 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.
摘要翻译： 用于驱动气体放电灯的电子镇流器包括逆变器电路，谐振回路和控制电路，其可操作以确定谐振回路的谐振频率的近似值，并且响应于近似的 谐振频率。 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。
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7.发明申请Method and Apparatus for Measuring Operating Characteristics in a Load Control Device 有权用于测量负载控制装置中的工作特性的方法和装置公开(公告)号：US20120043900A1
公开(公告)日：2012-02-23
申请号：US13212556
申请日：2011-08-18
申请人： Venkatesh Chitta , Jonathan Robert Quayle , Alexander J. Rovnan , Mark S. Taipale , Dragan Veskovic
发明人： Venkatesh Chitta , Jonathan Robert Quayle , Alexander J. Rovnan , Mark S. Taipale , Dragan Veskovic
IPC分类号： H05B41/36
CPC分类号： H05B41/24 , H05B37/00 , H05B41/295 , H05B41/38
摘要： A load control device, such as an electronic ballast, for controlling the power delivered from an AC power source to an electrical load, such as one or more fluorescent lamps, comprises a power converter having an inductor and a power switching device coupled to the inductor, a load control circuit adapted to be coupled to the electrical load, and a control circuit operable to calculate an average input power of the load control device. The control circuit may be operable to calculate a cumulative output power of the power converter while the ballast is preheating filaments of the lamps, and to subsequently determine a fault condition in the lamps in response to the calculated cumulative output power of the power converter. Further, the control circuit may be operable to transmit a digital message including the calculated average input power of the load control device.
摘要翻译： 用于控制从AC电源传递到诸如一个或多个荧光灯的电负载的功率的诸如电子镇流器的负载控制装置包括具有耦合到电感器的电感器和功率开关装置的功率转换器 ，适于耦合到所述电负载的负载控制电路，以及可操作以计算所述负载控制装置的平均输入功率的控制电路。 控制电路可以可操作以在镇流器预热灯的灯丝时计算功率转换器的累积输出功率，并且随后响应于所计算的功率转换器的累积输出功率来确定灯中的故障状况。 此外，控制电路可以用于发送包括计算出的负载控制装置的平均输入功率的数字消息。
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