公开(公告)号：US07521873B2

公开(公告)日：2009-04-21

申请号：US11508515

申请日：2006-08-22

申请人： Shu Yuen Ron Hui ,  Shu-hung Chung

发明人： Shu Yuen Ron Hui ,  Shu-hung Chung

IPC分类号： H05B37/02

CPC分类号： H05B41/392 ,  H05B41/2881 ,  H05B41/2883 ,  H05B41/2886 ,  H05B41/2921 ,  H05B41/2925 ,  H05B41/386 ,  H05B41/388 ,  Y02B20/204 ,  Y02B20/208

摘要： The present invention provides an electronic ballast for a high intensity discharge lamp such as a metal halide lamp. The ballast includes an inverter and a resonant circuit with an ignition capacitor between the resonant circuit and the lamp. The ignition capacitor serves to provide the necessary start-up energy and also serves to provide a low impedance discharge path. A single ignition capacitor may be sufficient, but if a long cable is used to connect the lamp to the ballast, then two ignition capacitors in parallel at opposite ends of the cable may be used. The ballast further provides means for monitoring and controlling lamp power by monitoring a nominally constant dc link voltage, and means for detecting short-circuit and open circuit conditions. A retrial mechanism is provided in the event of the lamp failing to ignite that includes a temporary disabling of the inverter in order to keep the rms lamp voltage low.

摘要翻译： 本发明提供一种用于诸如金属卤化物灯的高强度放电灯的电子镇流器。 镇流器包括反相器和在谐振电路和灯之间具有点火电容器的谐振电路。 点火电容器用于提供必要的启动能量，并且还用于提供低阻抗放电路径。 单个点火电容器可能是足够的，但是如果使用长电缆将灯连接到镇流器，则可以使用在电缆的相对端并联的两个点火电容器。 镇流器还提供了通过监视标称恒定的直流链路电压来监测和控制灯功率的装置，以及用于检测短路和开路条件的装置。 在灯不能点燃的情况下提供再试机制，其包括暂时禁用逆变器，以便将均匀的灯电压保持在低电平。

公开(公告)号：US07119494B2

公开(公告)日：2006-10-10

申请号：US10056226

申请日：2002-01-23

申请人： Shu Yuen Ron Hui ,  Shu-hung Chung

发明人： Shu Yuen Ron Hui ,  Shu-hung Chung

IPC分类号： H05B37/02

CPC分类号： H05B41/392 ,  H05B41/2881 ,  H05B41/2883 ,  H05B41/2886 ,  H05B41/2921 ,  H05B41/2925 ,  H05B41/386 ,  H05B41/388 ,  Y02B20/204 ,  Y02B20/208

摘要： The present invention provides an electronic ballast for a high intensity discharge lamp such as a metal halide lamp. The ballast includes an inverter and a resonant circuit with an ignition capacitor between the resonant circuit and the lamp. The ignition capacitor serves to provide the necessary start-up energy and also serves to provide a low impedance discharge path. A single ignition capacitor may be sufficient, but if a long cable is used to connect the lamp to the ballast, then two ignition capacitors in parallel at opposite ends of the cable may be used. The ballast further provides means for monitoring and controlling lamp power by monitoring a nominally constant dc link voltage, and means for detecting short-circuit and open circuit conditions. A retrial mechanism is provided in the event of the lamp failing to ignite that includes a temporary disabling of the inverter in order to keep the rms lamp voltage low.

公开(公告)号：US20070057640A1

公开(公告)日：2007-03-15

申请号：US10569588

申请日：2004-08-26

申请人： Shu-hung Chung ,  Ngai Ho ,  Shu-Yuen Hui

发明人： Shu-hung Chung ,  Ngai Ho ,  Shu-Yuen Hui

IPC分类号： H05B39/04

CPC分类号： H05B41/3921 ,  H05B41/3924 ,  H05B41/3927 ,  Y10S315/04

摘要： Dimming of an electrical lamp of the type driven by a ballast is provided by a reactive power device in series between the AC supply and the ballast. The reactive power device provides a variable auxiliary voltage out of phase by 90 or 270 degrees with the current such that a smaller magnitude voltage is applied to the lamp. The dimming device has a switch to enable/disable dimming. When the switch is enabled, the voltage applied to the lamp is controlled by a half-bridge inverter with a pair of totem pole power electronic switches, along with a pair of DC series capacitors and a low-pass filter.

摘要翻译： 由镇流器驱动的电灯的调光由AC电源和镇流器之间的无功功率器件串联提供。 无功功率器件通过与电流异相提供90或270度的可变辅助电压，使得较小的幅度电压施加于灯。 调光装置具有启用/禁用调光功能的开关。 当开关使能时，施加到灯的电压由具有一对图腾柱电力电子开关的半桥逆变器以及一对DC串联电容器和低通滤波器控制。

公开(公告)号：US20070052373A1

公开(公告)日：2007-03-08

申请号：US11508515

申请日：2006-08-22

申请人： Shu Hui ,  Shu-hung Chung

发明人： Shu Hui ,  Shu-hung Chung

IPC分类号： H05B41/36

CPC分类号： H05B41/392 ,  H05B41/2881 ,  H05B41/2883 ,  H05B41/2886 ,  H05B41/2921 ,  H05B41/2925 ,  H05B41/386 ,  H05B41/388 ,  Y02B20/204 ,  Y02B20/208

摘要： The present invention provides an electronic ballast for a high intensity discharge lamp such as a metal halide lamp. The ballast includes an inverter and a resonant circuit with an ignition capacitor between the resonant circuit and the lamp. The ignition capacitor serves to provide the necessary start-up energy and also serves to provide a low impedance discharge path. A single ignition capacitor may be sufficient, but if a long cable is used to connect the lamp to the ballast, then two ignition capacitors in parallel at opposite ends of the cable may be used. The ballast further provides means for monitoring and controlling lamp power by monitoring a nominally constant dc link voltage, and means for detecting short-circuit and open circuit conditions. A retrial mechanism is provided in the event of the lamp failing to ignite that includes a temporary disabling of the inverter in order to keep the rms lamp voltage low.

摘要翻译： 本发明提供一种用于诸如金属卤化物灯的高强度放电灯的电子镇流器。 镇流器包括反相器和在谐振电路和灯之间具有点火电容器的谐振电路。 点火电容器用于提供必要的启动能量，并且还用于提供低阻抗放电路径。 单个点火电容器可能是足够的，但是如果使用长电缆将灯连接到镇流器，则可以使用在电缆的相对端并联的两个点火电容器。 镇流器还提供了通过监视标称恒定的直流链路电压来监测和控制灯功率的装置，以及用于检测短路和开路条件的装置。 在灯不能点燃的情况下提供再试机制，其包括暂时禁用逆变器，以便将均匀的灯电压保持在低电平。