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1. 发明授权

US08242703B2 Driving apparatus for light emitting diodes without employing electrolytic capacitor 有权
标题翻译：不使用电解电容器的发光二极管的驱动装置
公开(公告)号：US08242703B2
公开(公告)日：2012-08-14
申请号：US12686333
申请日：2010-01-12
申请人： Beibei Wang , Xinbo Ruan , Ming Xu , Kai Yao
发明人： Beibei Wang , Xinbo Ruan , Ming Xu , Kai Yao
IPC分类号： H05B41/16
CPC分类号： H05B33/0815
摘要： A driving apparatus is provided and configured to suit driving at least a string of light emitting diodes (LEDs). The driving apparatus includes a flyback power factor correction (PFC) converter, a harmonics-filtering unit and a control unit. The flyback PFC converter works in an operation mode according to a pulse-width modulation (PWM) signal and receives an AC power so as to convert the AC power into a pulsating current. The harmonics-filtering unit is coupled to the flyback PFC converter and the string of LEDs, for receiving the pulsating current and filtering out the high-frequency harmonic components in the pulsating current so as to drive the string of LEDs. The control unit is coupled to the flyback PFC converter and the harmonics-filtering unit, for producing the PWM signal according to the AC power and the pulsating current, and reducing the peak-to-average ratio (PAR) of the pulsating current.
摘要翻译：驱动装置被提供和配置为适合驱动至少一串发光二极管（LED）。驱动装置包括反激式功率因数校正（PFC）转换器，谐波滤波单元和控制单元。回扫PFC转换器根据脉宽调制（PWM）信号工作在运行模式，并接收交流电源，以将交流电转换为脉动电流。谐波滤波单元耦合到回扫PFC转换器和LED串，用于接收脉动电流并滤除脉动电流中的高频谐波分量，以驱动LED串。控制单元耦合到回扫PFC转换器和谐波滤波单元，用于根据AC功率和脉动电流产生PWM信号，并降低脉动电流的峰值平均比（PAR）。

2. 发明申请

US20110037414A1 DRIVING APPARATUS FOR LIGHT EMITTING DIODES 有权
标题翻译：用于发光二极管的驱动装置
公开(公告)号：US20110037414A1
公开(公告)日：2011-02-17
申请号：US12686333
申请日：2010-01-12
申请人： Beibei Wang , Xinbo Ruan , Ming Xu , Kai Yao
发明人： Beibei Wang , Xinbo Ruan , Ming Xu , Kai Yao
IPC分类号： H05B41/36
CPC分类号： H05B33/0815
摘要： A driving apparatus is provided and configured to suit driving at least a string of light emitting diodes (LEDs). The driving apparatus includes a flyback power factor correction (PFC) converter, a harmonics-filtering unit and a control unit. The flyback PFC converter works in an operation mode according to a pulse-width modulation (PWM) signal and receives an AC power so as to convert the AC power into a pulsating current. The harmonics-filtering unit is coupled to the flyback PFC converter and the string of LEDs, for receiving the pulsating current and filtering out the high-frequency harmonic components in the pulsating current so as to drive the string of LEDs. The control unit is coupled to the flyback PFC converter and the harmonics-filtering unit, for producing the PWM signal according to the AC power and the pulsating current, and reducing the peak-to-average ratio (PAR) of the pulsating current.
摘要翻译：驱动装置被提供和配置为适合驱动至少一串发光二极管（LED）。驱动装置包括反激式功率因数校正（PFC）转换器，谐波滤波单元和控制单元。回扫PFC转换器根据脉宽调制（PWM）信号工作在运行模式，并接收交流电源，以将交流电转换为脉动电流。谐波滤波单元耦合到回扫PFC转换器和LED串，用于接收脉动电流并滤除脉动电流中的高频谐波分量，以驱动LED串。控制单元耦合到回扫PFC转换器和谐波滤波单元，用于根据AC功率和脉动电流产生PWM信号，并降低脉动电流的峰值平均比（PAR）。

3. 发明授权

US08102165B2 Means of eliminating electrolytic capacitor as the energy storage component in the single phase AD/DC two-stage converter 有权
标题翻译：消除电解电容器作为单相AD / DC两级转换器的储能部件的手段
公开(公告)号：US08102165B2
公开(公告)日：2012-01-24
申请号：US12496025
申请日：2009-07-01
申请人： Linlin Gu , Ming Xu , Xinbo Ruan , Kai Yao
发明人： Linlin Gu , Ming Xu , Xinbo Ruan , Kai Yao
IPC分类号： G05F1/40 , G05F1/10 , G05F5/00
CPC分类号： H02M1/14 , H02M1/4225 , Y02B70/126 , Y02P80/112
摘要： A power factor correction (PFC) circuit includes an inductor, a diode, a storage capacitor, a switch and a control unit. The input power has a voltage fluctuation V1. The storage component absorbs a first voltage fluctuation and a switch regulation circuit absorbs a second voltage fluctuation V2. Thus output voltage from the PFC circuit is not a conventional constant voltage but a voltage of a great ripple. The PFC circuit further has a harmonic regulation unit. The harmonic regulation unit generates a voltage signal containing 3rd harmonic. The control unit receives a feedback signal and the voltage signal containing 3rd harmonic to generate a reference to the inductor current. Therefore, the inductor current contains 3rd harmonic. Thus power fluctuation absorbed and released by the capacitor is smaller. As a result energy storage capacitance can be reduced significantly.
摘要翻译：功率因数校正（PFC）电路包括电感器，二极管，存储电容器，开关和控制单元。输入功率具有电压波动V1。存储部件吸收第一电压波动，开关调节电路吸收第二电压波动V2。因此，来自PFC电路的输出电压不是常规的恒定电压，而是具有很大纹波的电压。 PFC电路还具有谐波调节单元。谐波调节单元产生包含三次谐波的电压信号。控制单元接收反馈信号和包含三次谐波的电压信号以产生对电感器电流的参考。因此，电感电流包含三次谐波。因此，由电容器吸收和释放的功率波动较小。因此能够显着降低储能电容。

4. 发明申请

US20100014326A1 MEANS OF ELIMINATING ELECTROLYTIC CAPACITOR AS THE ENERGY STORAGE COMPONENT IN THE SINGLE PHASE AD/DC TWO-STAGE CONVERTER 有权
标题翻译：消除电解电容器作为单相AD / DC两级转换器中的能源存储组件的手段
公开(公告)号：US20100014326A1
公开(公告)日：2010-01-21
申请号：US12496025
申请日：2009-07-01
申请人： Linlin GU , Ming Xu , Xinbo Ruan , Kai Yao
发明人： Linlin GU , Ming Xu , Xinbo Ruan , Kai Yao
IPC分类号： H02M1/14
CPC分类号： H02M1/14 , H02M1/4225 , Y02B70/126 , Y02P80/112
摘要： A power factor correction (PFC) circuit includes an inductor, a diode, a storage capacitor, a switch and a control unit. The input power has a voltage fluctuation V1. The storage component absorbs a first voltage fluctuation and a switch regulation circuit absorbs a second voltage fluctuation V2. Thus output voltage from the PFC circuit is not a conventional constant voltage but a voltage of a great ripple. The PFC circuit further has a harmonic regulation unit. The harmonic regulation unit generates a voltage signal containing 3rd harmonic. The control unit receives a feedback signal and the voltage signal containing 3rd harmonic to generate a reference to the inductor current. Therefore, the inductor current contains 3rd harmonic. Thus power fluctuation absorbed and released by the capacitor is smaller. As a result energy storage capacitance can be reduced significantly.
摘要翻译：功率因数校正（PFC）电路包括电感器，二极管，存储电容器，开关和控制单元。输入功率具有电压波动V1。存储组件吸收第一电压波动，开关调节电路吸收第二电压波动V2。因此，来自PFC电路的输出电压不是常规的恒定电压，而是具有很大纹波的电压。 PFC电路还具有谐波调节单元。谐波调节单元产生包含三次谐波的电压信号。控制单元接收反馈信号和包含三次谐波的电压信号以产生对电感器电流的参考。因此，电感电流包含三次谐波。因此，由电容器吸收和释放的功率波动较小。因此能够显着降低储能电容。

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