公开(公告)号：US20130119882A1

公开(公告)日：2013-05-16

申请号：US13810109

申请日：2011-06-14

申请人： Saijun Mao ,  Yunfeng Liu ,  Xiaoming Yuan ,  Yingqi Zhang ,  Charles Adrian Becker ,  Junhui Fei ,  Jian Wang

发明人： Saijun Mao ,  Yunfeng Liu ,  Xiaoming Yuan ,  Yingqi Zhang ,  Charles Adrian Becker ,  Junhui Fei ,  Jian Wang

IPC分类号： H05B37/02

CPC分类号： H05B37/02 ,  H05B33/0815 ,  H05B33/0824

摘要： A system having an alternating current (AC) driven LED unit, an AC voltage regulator, and a controller is provided. The AC driven LED unit includes a first LED and a second LED coupled in reverse parallel. The AC voltage regulator is operable to receive AC voltage originating from an AC voltage source, regulate the AC voltage according to control signals from the controller, and apply regulated AC voltage to the AC driven LED unit, so as to enable the first LED and the second LED to emit light according to the regulated AC voltage. In addition, a method is provided for driving the LED by regulating the AC voltage. By regulating the AC voltage using the AC voltage regulator, benefits of restraining voltage fluctuations, reducing THD, improving power factor, providing dimming control, and mitigating flicker phenomenon can be achieved.

摘要翻译： 提供具有交流（AC）驱动的LED单元，AC电压调节器和控制器的系统。 AC驱动的LED单元包括第一LED和反向并联耦合的第二LED。 交流电压调节器可以接收来自交流电压源的交流电压，根据控制器的控制信号调节交流电压，并对交流驱动的LED单元施加调节的交流电压，以使第一个LED和 第二个LED根据调节的交流电压发光。 此外，提供了通过调节AC电压来驱动LED的方法。 通过使用交流电压调节器调节交流电压，可以实现抑制电压波动，降低THD，提高功率因数，提供调光控制和减轻闪烁现象的优点。

公开(公告)号：US09516723B2

公开(公告)日：2016-12-06

申请号：US13810109

申请日：2011-06-14

申请人： Saijun Mao ,  Yunfeng Liu ,  Xiaoming Yuan ,  Yingqi Zhang ,  Charles Adrian Becker ,  Junhui Fei ,  Jian Wang

发明人： Saijun Mao ,  Yunfeng Liu ,  Xiaoming Yuan ,  Yingqi Zhang ,  Charles Adrian Becker ,  Junhui Fei ,  Jian Wang

IPC分类号： H05B33/08 ,  H05B37/02

CPC分类号： H05B37/02 ,  H05B33/0815 ,  H05B33/0824

摘要： A system having an alternating current (AC) driven LED unit, an AC voltage regulator, and a controller is provided. The AC driven LED unit includes a first LED and a second LED coupled in reverse parallel. The AC voltage regulator is operable to receive AC voltage originating from an AC voltage source, regulate the AC voltage according to control signals from the controller, and apply regulated AC voltage to the AC driven LED unit, so as to enable the first LED and the second LED to emit light according to the regulated AC voltage. In addition, a method is provided for driving the LED by regulating the AC voltage. By regulating the AC voltage using the AC voltage regulator, benefits of restraining voltage fluctuations, reducing THD, improving power factor, providing dimming control, and mitigating flicker phenomenon can be achieved.

摘要翻译： 提供具有交流（AC）驱动的LED单元，AC电压调节器和控制器的系统。 AC驱动的LED单元包括第一LED和反向并联耦合的第二LED。 交流电压调节器可操作以接收源自交流电压源的交流电压，根据控制器的控制信号调节交流电压，并对交流驱动的LED单元施加调节的交流电压，以使第一个LED和 第二个LED根据调节的交流电压发光。 此外，提供了通过调节AC电压来驱动LED的方法。 通过使用交流电压调节器调节交流电压，可以实现抑制电压波动，降低THD，提高功率因数，提供调光控制和减轻闪烁现象的优点。