公开(公告)号：US06850425B2

公开(公告)日：2005-02-01

申请号：US10340697

申请日：2003-01-10

申请人： Jingtao Tan ,  Jianping Ying ,  Hua Lin

发明人： Jingtao Tan ,  Jianping Ying ,  Hua Lin

IPC分类号： H02M7/48 ,  H02M7/493 ,  H02M7/00

CPC分类号： H02M7/493

摘要： A parallel inverter system includes a plurality of inverters of an instantaneous voltage control type, an output bus, an active power bus, a phase bus, and controlling devices. The output bus is used for connecting outputs of said plurality of inverters to a load. The active power bus is connected to the plurality of inverters so as to provide an active power sharing reference. The phase bus is connected to the plurality of inverters so as to provide a system phase reference. And, controlling devices control sinusoidal wave references of inverters to have the same phase, the reactive power, and the active power responsive to the active power sharing reference and the system phase reference. The related methods are also discussed.

摘要翻译： 并联逆变器系统包括多个瞬时电压控制型逆变器，输出总线，有功功率总线，相位母线和控制装置。 输出总线用于将所述多个逆变器的输出连接到负载。 有源电力总线连接到多个逆变器，以提供有功功率共享参考。 相位母线与多个逆变器连接，以提供系统相位参考。 并且，控制装置控制逆变器的正弦波参考以响应于有功功率共享参考和系统相位参考而具有相同的相位，无功功率和有功功率。 还讨论了相关方法。

公开(公告)号：US06535402B1

公开(公告)日：2003-03-18

申请号：US10194677

申请日：2002-07-12

申请人： Jianping Ying ,  Zhigan Wu ,  Jin Wang

发明人： Jianping Ying ,  Zhigan Wu ,  Jin Wang

IPC分类号： H02M112

CPC分类号： H02M7/5387 ,  H02M2001/0009 ,  H02M2001/385

摘要： The invention relates to the compensation of dead time effect in electronic appliances such as inverters or converters having one or more legs with two complementary switches. The invented method mainly includes following steps providing an initial pulse width modulated (PWM) reference, providing a bias current and detecting the bias current crossing points, providing a dead time compensation signal which is adjusted responsive to the crossing points, and adding the dead time compensation signal to the PWM reference. Hence an adaptive compensation is accomplished independent of types of switching elements and load conditions. A high reliable circuit with low cost is further included as a preferred embodiment of bias current crossing points detection.

摘要翻译： 本发明涉及对诸如具有两个互补开关的一个或多个支脚的逆变器或转换器的电子设备中的死区时间效应的补偿。 本发明的方法主要包括以下步骤：提供初始脉冲宽度调制（PWM）参考，提供偏置电流和检测偏置电流交叉点，提供响应于交叉点调整的死区时间补偿信号，并增加死区时间 补偿信号到PWM参考。 因此，独立于开关元件和负载条件的类型实现自适应补偿。 作为偏置电流交叉点检测的优选实施例，还包括低成本的高可靠性电路。

公开(公告)号：US08890424B2

公开(公告)日：2014-11-18

申请号：US13547213

申请日：2012-07-12

申请人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying ,  Ching-Ho Chou ,  Hsiang-Chen Wu

发明人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying ,  Ching-Ho Chou ,  Hsiang-Chen Wu

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0851 ,  Y02B20/347

摘要： The present invention provides an illumination device, an illumination system, and a lamp. The illumination system includes the illumination device and a light modulation module. The illumination device includes a light emitting diode (LED) array, an alternating current (AC) current source, and an output power control module. The AC current source is electrically coupled to the LED array. The output power control module is electrically coupled to the LED array and the AC current source. The LED array, the AC current source, and the output power control module together form a closed-loop control loop. The light modulation module is electrically coupled to the closed-loop control loop for modulating illumination brightness of the LED.

摘要翻译： 本发明提供一种照明装置，照明系统和灯。 照明系统包括照明装置和光调制模块。 照明装置包括发光二极管（LED）阵列，交流（AC）电流源和输出功率控制模块。 AC电流源电耦合到LED阵列。 输出功率控制模块电耦合到LED阵列和AC电流源。 LED阵列，AC电流源和输出功率控制模块一起形成闭环控制回路。 光调制模块电耦合到闭环控制环路，用于调制LED的照明亮度。

公开(公告)号：US08884542B2

公开(公告)日：2014-11-11

申请号：US13314820

申请日：2011-12-08

申请人： Weiqiang Zhang ,  Yan Zhong ,  Jianping Ying

发明人： Weiqiang Zhang ,  Yan Zhong ,  Jianping Ying

IPC分类号： H05B41/16 ,  H05B41/282 ,  H05B41/295

CPC分类号： H05B41/295 ,  H05B41/2828

摘要： An electronic ballast for driving a light-emitting device, includes a square wave generator having a plurality of switch elements for converting a DC input voltage into a square-wave AC voltage. A transformer has a driving winding and a plurality of inductive windings mutually connected with each other, in which at least a portion of the inductive windings are respectively connected to a control terminal of the switch element. A resonant circuit connects the driving winding and a light-emitting device and converts the square-wave voltage into an AC output voltage to drive the light-emitting device. An auxiliary control unit connected to the transformer regulates a voltage waveform of the driving winding or a voltage waveform of the inductive winding according to a control signal, thereby changing the voltage waveform of the inductive winding connected to the switch element to adjust the switching frequencies of the switch elements.

摘要翻译： 一种用于驱动发光器件的电子镇流器，包括具有用于将DC输入电压转换为方波AC电压的多个开关元件的方波发生器。 变压器具有彼此相互连接的驱动绕组和多个感应绕组，其中至少一部分感应绕组分别连接到开关元件的控制端子。 谐振电路连接驱动绕组和发光装置，并将方波电压转换成AC输出电压以驱动发光装置。 连接到变压器的辅助控制单元根据控制信号调节驱动绕组的电压波形或电感性绕组的电压波形，从而改变连接到开关元件的电感线圈的电压波形，以调节开关频率 开关元件。

公开(公告)号：US08760083B2

公开(公告)日：2014-06-24

申请号：US13239072

申请日：2011-09-21

申请人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

发明人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： H05B37/02

CPC分类号： H05B41/2886 ,  Y02B20/202

摘要： A ballast which controls the open-circuit voltage of the ballast. The ballast includes a power factor corrector (PFC) for receiving an AC input voltage and converting the AC input voltage into a power factor corrected DC voltage; a DC/DC converter connected to the PFC and having a switch placed at a low-voltage side of the DC/DC converter for converting the DC voltage of the PFC into a DC output voltage according to the switching operation of the switch; a controller connected to a control terminal of the switch of the DC/DC converter for sending a switching control signal to control the switch; and an open-circuit voltage controller for detecting a voltage associated with the open-circuit voltage of the ballast and regulating the duty ratio or pulse density or switching frequency of the switching control signal in response to the results of the detection, thereby controlling the open-circuit voltage.

摘要翻译： 控制镇流器的开路电压的镇流器。 镇流器包括用于接收AC输入电压并将AC输入电压转换成功率因数校正的DC电压的功率因数校正器（PFC）; DC / DC转换器，其连接到PFC并且具有放置在DC / DC转换器的低压侧的开关，用于根据开关的开关操作将PFC的DC电压转换为DC输出电压; 连接到DC / DC转换器的开关的控制端子的控制器，用于发送开关控制信号以控制开关; 以及开路电压控制器，用于检测与镇流器的开路电压相关联的电压，并响应于检测结果调节开关控制信号的占空比或脉冲密度或开关频率，从而控制开路 电路电压。

公开(公告)号：US08692478B2

公开(公告)日：2014-04-08

申请号：US13242123

申请日：2011-09-23

申请人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying

发明人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： H05B41/16

CPC分类号： H05B33/0821 ,  H05B33/0809

摘要： The invention provides a current balancing circuit, which includes a plurality of light-emitting diode assemblies; an AC power generator for providing currents required by the light-emitting diode assemblies; and a plurality of current-equaling elements connected to the AC power generator, each of which is connected to a common mode connecting two light-emitting diode assemblies for balancing currents of the light-emitting diode assemblies.

摘要翻译： 本发明提供了一种电流平衡电路，其包括多个发光二极管组件; AC发电机，用于提供发光二极管组件所需的电流; 以及连接到AC发电机的多个电流均衡元件，每个电流均衡元件连接到连接两个用于平衡发光二极管组件的电流的发光二极管组件的共模。

公开(公告)号：US08686746B2

公开(公告)日：2014-04-01

申请号：US12827115

申请日：2010-06-30

申请人： Min Zhou ,  Yicong Xie ,  Jinping Zhou ,  Jianping Ying

发明人： Min Zhou ,  Yicong Xie ,  Jinping Zhou ,  Jianping Ying

IPC分类号： G01R27/26

CPC分类号： G01R27/2605 ,  G01R27/28 ,  G01R31/001

摘要： Disclosed is a test apparatus for measuring the common-mode parasitic capacitance between a first element and a second element being isolated from the first element. The test apparatus includes a signal generating device connected to the first element and having an internal signal source connected in series with a first internal impedance for sending a signal to the first element, and a signal receiving device connected between the second element and the first element and having a second internal impedance for measuring a signal response between the first element and the second element, thereby calculating the common-mode capacitance between the first element and the second element based on the signal response.

摘要翻译： 公开了一种用于测量与第一元件隔离的第一元件和第二元件之间的共模寄生电容的测试装置。 测试装置包括连接到第一元件的信号产生装置，并且具有与第一内部阻抗串联连接的内部信号源，用于向第一元件发送信号;以及信号接收装置，连接在第二元件和第一元件之间 并具有用于测量第一元件和第二元件之间的信号响应的第二内部阻抗，由此基于信号响应计算第一元件和第二元件之间的共模电容。

公开(公告)号：US20130278152A1

公开(公告)日：2013-10-24

申请号：US13572122

申请日：2012-08-10

申请人： Weiqiang Zhang ,  Lizhi Xu ,  Jianping Ying

发明人： Weiqiang Zhang ,  Lizhi Xu ,  Jianping Ying

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0821

摘要： The present application discloses a light emitting diode lighting device and a light emitting diode lamp, the light emitting diode lighting device includes: a fluorescent lamp ballast outputting an alternating current; and at least one first light emitting diode lamp coupled with the fluorescent lamp ballast, and comprising a rectifying and filtering circuit and at least one light emitting diode string coupled with the rectifying and filtering circuit. The present application directly replaces a conventional fluorescent lamp tube with a properly designed LED lamp without any other modifications when reinstallation a conventional fluorescent lamp lighting device into a light emitting diode lighting device, which may reduce the cost of reinstallation, and greatly facilitate the user.

摘要翻译： 本发明公开了一种发光二极管照明装置和发光二极管灯，所述发光二极管照明装置包括：输出交流电的荧光灯镇流器; 以及与荧光灯镇流器耦合的至少一个第一发光二极管灯，并且包括整流和滤波电路以及与整流和滤波电路耦合的至少一个发光二极管串。 本发明的应用将传统的荧光灯照明装置重新安装到发光二极管照明装置中时，直接用适当设计的LED灯代替常规的荧光灯管，而无需任何其它修改，这可能降低重新安装的成本，并且极大地方便了用户。

公开(公告)号：US20130188401A1

公开(公告)日：2013-07-25

申请号：US13466670

申请日：2012-05-08

申请人： Hongyuan Jin ,  Baochen Wang ,  Hongjian Gan ,  Jianping Ying

发明人： Hongyuan Jin ,  Baochen Wang ,  Hongjian Gan ,  Jianping Ying

IPC分类号： H02M3/335

CPC分类号： H02M1/4225 ,  H02H3/14 ,  H02M1/4258 ,  H02M2001/322 ,  Y02B70/126 ,  Y02P80/112

摘要： A capacitor discharging circuit and a converter are disclosed. The converter comprises: a capacitor connected between the live line and null line of an AC power input terminals, a conversion module coupled to the capacitor and comprising an energy storage component at least, an energy transfer unit coupled with the energy storage component and the capacitor, an AC power-off detecting unit and a control unit; wherein the energy transfer unit comprises a switch device; when AC power is disconnected, the AC power-off signal triggers the control unit to output a switch driving signal, controlling the operation of the energy transfer unit to transfer the energy stored in the capacitor to the energy storage component to discharge the capacitor.

摘要翻译： 公开了电容器放电电路和转换器。 该转换器包括：连接在交流电源输入端的实线和零线之间的电容器，耦合到电容器的转换模块，至少包括能量存储部件，与能量存储部件和电容器耦合的能量传递单元 AC电源关闭检测单元和控制单元; 其中所述能量传递单元包括开关装置; 当交流电源断开时，交流断电信号触发控制单元输出开关驱动信号，控制能量转移单元的运行，将存储在电容器中的能量转移到能量存储组件以对电容器进行放电。

公开(公告)号：US08487550B2

公开(公告)日：2013-07-16

申请号：US13297460

申请日：2011-11-16

申请人： Weiqiang Zhang ,  Lizhi Xu ,  Qi Zhang ,  Jianping Ying

发明人： Weiqiang Zhang ,  Lizhi Xu ,  Qi Zhang ,  Jianping Ying

IPC分类号： H05B37/02

CPC分类号： H05B33/0815

摘要： Provided is a multi-channel LED driver circuit, including a power supply device for providing an independent voltage source; a plurality of regulating circuits connected to the power supply device and the light light-emitting diode arrays for receiving a voltage from the voltage source and providing a plurality of output currents to the light-emitting diode arrays, and thereby generating a plurality of error signals.

摘要翻译： 提供了一种多通道LED驱动器电路，包括用于提供独立电压源的电源装置; 连接到电源装置的多个调节电路和用于从电压源接收电压并向发光二极管阵列提供多个输出电流的发光二极管阵列，从而产生多个误差信号 。