公开(公告)号：US09351356B2

公开(公告)日：2016-05-24

申请号：US13486947

申请日：2012-06-01

申请人： Zhaohui He ,  Robert T. Grisamore ,  Michael A. Kost

发明人： Zhaohui He ,  Robert T. Grisamore ,  Michael A. Kost

IPC分类号： H05B33/08

CPC分类号： H05B33/0815 ,  Y02B20/346

摘要： An electronic system includes controller to control a switching power converter to provide power to a load. To control the amount of power provided to the load, in at least one embodiment, the controller senses a current value representing a current in the switching power converter and detects when the current value reaches a target peak value. However, due to delays in the controller and/or the switching power converter, the detected target peak value will not be the actual current peak value generated by the switching power converter. In at least one embodiment, the controller adjusts the detected target peak value with a post-detection delay compensation factor to generate a delay compensated current value that more accurately represents an actual peak current value associated with the current in the switching power converter.

摘要翻译： 电子系统包括控制器以控制开关功率转换器以向负载提供电力。 为了控制提供给负载的功率量，在至少一个实施例中，控制器检测表示开关功率转换器中的电流的电流值，并检测当前值何时达到目标峰值。 然而，由于控制器和/或开关功率转换器的延迟，检测到的目标峰值将不是由开关功率转换器产生的实际电流峰值。 在至少一个实施例中，控制器利用检测后延迟补偿因子调整检测到的目标峰值，以产生更准确地表示与开关功率转换器中的电流相关联的实际峰值电流值的延迟补偿电流值。

公开(公告)号：US09307601B2

公开(公告)日：2016-04-05

申请号：US13539004

申请日：2012-06-29

申请人： Zhaohui He ,  Rahul Singh ,  Eric J. King ,  John L. Melanson ,  William A. Draper

发明人： Zhaohui He ,  Rahul Singh ,  Eric J. King ,  John L. Melanson ,  William A. Draper

IPC分类号： H05B37/00 ,  H05B33/08

CPC分类号： H05B33/0848 ,  H05B33/0815 ,  Y02B20/346

摘要： An electronic lighting system and method described herein control energy provided to an electronic lighting device, such as one or more light-emitting diodes (LEDs) and/or compact fluorescent lamps (CFLs), of the electronic lighting system. A triac-based dimmer phase cuts a line voltage provided to the electronic lighting system. A controller of the electronic lighting system utilizes a probing system to overcome idiosyncrasies of the triac-based dimmer to allow the controller to probe and sense the line voltage. To reduce energy consumption, rather than probing each cycle of the output voltage of the triac-based dimmer, the controller periodically or intermittently probes the output voltage of the triac-based dimmer.

摘要翻译： 本文所述的电子照明系统和方法控制提供给诸如电子照明系统的一个或多个发光二极管（LED）和/或紧凑型荧光灯（CFL）的电子照明装置的能量。 三端双向可控硅开关控制器的调光器相位切断提供给电子照明系统的线路电压。 电子照明系统的控制器利用探测系统来克服基于triac的调光器的特性，以允许控制器探测和感测线路电压。 为了降低能耗，而不是探测基于三端双向可控硅的调光器的输出电压的每个周期，控制器周期性或间歇地探测基于三端双向可控硅的调光器的输出电压。

公开(公告)号：US08487591B1

公开(公告)日：2013-07-16

申请号：US12650547

申请日：2009-12-31

申请人： William A. Draper ,  John L. Melanson ,  Zhaohui He

发明人： William A. Draper ,  John L. Melanson ,  Zhaohui He

IPC分类号： H02J7/00

CPC分类号： H02J1/10 ,  H02J7/345 ,  H02J9/00 ,  H02J9/04 ,  H02J2001/006

摘要： A power control system provides immunity from power supply dropout for a controller without compromising a startup time of the controller. In at least one embodiment, the power control system includes separate startup and dropout immunity capacitors. In at least one embodiment, selection of the capacitance of the startup capacitor is independent of selection of the capacitance of the dropout immunity capacitance. In at least one embodiment, the startup capacitance can be minimized to provide sufficient energy for the controller to normally operate during one missed cycle of an input voltage and, thus, provide a minimum startup time for the controller. The capacitance of the dropout immunity capacitor can be maximized to provide sufficient energy for the controller to operate normally during a time period longer than one cycle of the input voltage.

摘要翻译： 电源控制系统在不损害控制器的启动时间的情况下提供对控制器的电源供电缺陷的抗扰度。 在至少一个实施例中，功率控制系统包括单独的启动和掉电抗扰电容器。 在至少一个实施例中，启动电容器的电容的选择与压降抗扰电容的电容的选择无关。 在至少一个实施例中，可以使启动电容最小化以提供足够的能量，以使控制器在输入电压的一个错过周期期间正常工作，并因此为控制器提供最小启动时间。 可以使压差抗扰电容器的电容最大化，以提供足够的能量，使控制器在长于输入电压的一个周期的时间周期内正常工作。

公开(公告)号：US20120306406A1

公开(公告)日：2012-12-06

申请号：US13486625

申请日：2012-06-01

申请人： Robert T. Grisamore ,  Zhaohui He

发明人： Robert T. Grisamore ,  Zhaohui He

IPC分类号： H05B37/02 ,  H02M7/44

CPC分类号： H05B33/0815 ,  H02M3/33523 ,  Y02B20/346 ,  Y02B70/1433

摘要： A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the controller determines the one or more switching power converter control parameters using a resonant period factor from a reflected secondary-side voltage and an occurrence of an approximate zero voltage crossing of the secondary-side voltage during a resonant period of the secondary-side voltage. In at least one embodiment, the switching power converter control parameters include (i) an estimated time of a minimum value of the secondary-side voltage during the resonant period and (ii) an estimated time at which a current in the secondary-side of the transformer decayed to approximately zero.

摘要翻译： 配电系统包括开关电源转换器的控制器，以控制开关功率转换器并确定一个或多个开关功率转换器控制参数。 在至少一个实施例中，控制器使用来自反射的次级侧电压的谐振周期因子和在次级侧电压的共振周期期间发生次级侧电压的近似零电压交叉来确定一个或多个开关功率转换器控制参数 次级侧电压。 在至少一个实施例中，开关功率转换器控制参数包括（i）在谐振周期期间次级侧电压的最小值的估计时间，以及（ii）次级侧的电流的估计时间 变压器衰减到零。

公开(公告)号：US08664424B2

公开(公告)日：2014-03-04

申请号：US13642808

申请日：2011-06-07

申请人： Ping Wang ,  Xiaobin Fan ,  Xingjun Lin ,  Zhaohui He

发明人： Ping Wang ,  Xiaobin Fan ,  Xingjun Lin ,  Zhaohui He

IPC分类号： C07C69/76 ,  C07C51/10 ,  C07C22/04 ,  C07D293/04 ,  C07C57/30

CPC分类号： C07C51/10 ,  C07C17/32 ,  Y02P20/542 ,  C07C57/30 ,  C07C22/04

摘要： Provided is a method for preparing 2,5-dimethylphenylacetic acid, wherein p-xylene is mixed with paraformaldehyde and concentrated hydrochloric acid in a solvent of ion liquid to obtain 2,5-dimethyl benzyl chloride by the chloromethylation reaction. Then, 2,5-dimethyl benzyl chloride is introduced into a reactor with an acid binding agent and a solvent, the carbonylation and hydrolysis reaction is conducted in the presence of a catalyst to obtain 2,5-dimethylphenylacetic acid. The present process has new route, less synthesis steps, simple operation, lower cost, increased yield, and is friendly to the environment. Therefore, the method is suitable for industrial production.

摘要翻译： 提供了制备2,5-二甲基苯乙酸的方法，其中对二甲苯与多聚甲醛和浓盐酸在离子液体的溶剂中混合，通过氯甲基化反应得到2,5-二甲基苄基氯。 然后，用酸结合剂和溶剂将2,5-二甲基苄基氯引入反应器中，羰基化和水解反应在催化剂存在下进行，得到2,5-二甲基苯基乙酸。 本工艺具有新途径，综合步骤少，操作简单，成本低，产量增加，对环境友好。 因此，该方法适用于工业生产。

公开(公告)号：US20130046108A1

公开(公告)日：2013-02-21

申请号：US13642808

申请日：2011-06-07

申请人： Ping Wang ,  Xiaobin Fan ,  Xingjun Lin ,  Zhaohui He

发明人： Ping Wang ,  Xiaobin Fan ,  Xingjun Lin ,  Zhaohui He

IPC分类号： C07C51/10

CPC分类号： C07C51/10 ,  C07C17/32 ,  Y02P20/542 ,  C07C57/30 ,  C07C22/04

摘要： Provided is a method for preparing 2,5-dimethylphenylacetic acid, wherein p-xylene is mixed with paraformaldehyde and concentrated hydrochloric acid in a solvent of ion liquid to obtain 2,5-dimethyl benzyl chloride by the chloromethylation reaction. Then, 2,5-dimethyl benzyl chloride is introduced into a reactor with an acid binding agent and a solvent, the carbonylation and hydrolysis reaction is conducted in the presence of a catalyst to obtain 2,5-dimethylphenylacetic acid. The present process has new route, less synthesis steps, simple operation, lower cost, increased yield, and is friendly to the environment. Therefore, the method is suitable for industrial production.

摘要翻译： 提供了制备2,5-二甲基苯乙酸的方法，其中对二甲苯与多聚甲醛和浓盐酸在离子液体的溶剂中混合，通过氯甲基化反应得到2,5-二甲基苄基氯。 然后，用酸结合剂和溶剂将2,5-二甲基苄基氯引入反应器中，羰基化和水解反应在催化剂存在下进行，得到2,5-二甲基苯基乙酸。 本工艺具有新途径，综合步骤少，操作简单，成本低，产量增加，对环境友好。 因此，该方法适用于工业生产。

公开(公告)号：US20120306407A1

公开(公告)日：2012-12-06

申请号：US13486947

申请日：2012-06-01

申请人： Zhaohui He ,  Robert T. Grisamore ,  Michael A. Kost

发明人： Zhaohui He ,  Robert T. Grisamore ,  Michael A. Kost

IPC分类号： G05F1/10 ,  H02M3/335 ,  H05B37/02

CPC分类号： H05B33/0815 ,  Y02B20/346

摘要： An electronic system includes controller to control a switching power converter to provide power to a load. To control the amount of power provided to the load, in at least one embodiment, the controller senses a current value representing a current in the switching power converter and detects when the current value reaches a target peak value. However, due to delays in the controller and/or the switching power converter, the detected target peak value will not be the actual current peak value generated by the switching power converter. In at least one embodiment, the controller adjusts the detected target peak value with a post-detection delay compensation factor to generate a delay compensated current value that more accurately represents an actual peak current value associated with the current in the switching power converter.

摘要翻译： 电子系统包括控制器以控制开关功率转换器以向负载提供电力。 为了控制提供给负载的功率量，在至少一个实施例中，控制器检测表示开关功率转换器中的电流的电流值，并检测当前值何时达到目标峰值。 然而，由于控制器和/或开关功率转换器的延迟，检测到的目标峰值将不是由开关功率转换器产生的实际电流峰值。 在至少一个实施例中，控制器利用检测后延迟补偿因子调整检测到的目标峰值，以产生更准确地表示与开关功率转换器中的电流相关联的实际峰值电流值的延迟补偿电流值。

公开(公告)号：US20120153858A1

公开(公告)日：2012-06-21

申请号：US13328801

申请日：2011-12-16

申请人： John L. Melanson ,  Zhaohui He

发明人： John L. Melanson ,  Zhaohui He

IPC分类号： H05B41/282 ,  H05B37/02 ,  H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0003 ,  H02M2001/007 ,  H05B33/0815 ,  Y02B20/346

摘要： An electronic system includes a controller to provide at least dual-mode conduction control of a switching power converter. In at least one embodiment, the controller is capable to control transitions between discontinuous conduction mode (DCM) and critical conduction mode (CRM) of the switching power converter using a measured switching time parameter having a value corresponding with an approximately peak voltage of a time-varying supply voltage supplied to the switching power converter. In at least one embodiment, the controller dynamically compensates for changing parameters of the electronic system by dynamically determining a minimum non-conductive time of the control switch of the switching power converter using the measured switching time parameter value at approximately the peak of the supply voltage of the supply voltage.

摘要翻译： 电子系统包括控制器，用于至少提供开关功率转换器的双模式导通控制。 在至少一个实施例中，控制器能够使用具有对应于一个时间的近似峰值电压的值的测量的开关时间参数来控制开关功率转换器的不连续导通模式（DCM）和临界导通模式（CRM）之间的转换 - 提供给开关电源转换器的电源电压。 在至少一个实施例中，控制器通过动态地确定开关功率转换器的控制开关的最小非导通时间，在大约电源电压的峰值处使用测量的开关时间参数值来动态地补偿电子系统的变化参数 的电源电压。

公开(公告)号：US20100327765A1

公开(公告)日：2010-12-30

申请号：US12495720

申请日：2009-06-30

申请人： John L. Melanson ,  Mauro L. Gaetano ,  Eric King ,  Robert Grisamore ,  Zhaohui He

发明人： John L. Melanson ,  Mauro L. Gaetano ,  Eric King ,  Robert Grisamore ,  Zhaohui He

IPC分类号： H05B41/36 ,  H02M3/335

CPC分类号： H02M3/3374

摘要： A cascaded power converter having an auxiliary power supply operated from the second switching power stage provides efficient operation by activating the auxiliary power supply early in the startup process. A low energy transfer operating mode is initiated in the second switching power stage to charge the auxiliary power supply output without generating significant disruption at the load. After the first switching power stage is started and the intermediate node voltage has increased to a level sufficient to operate the second switching power stage, the final switching power stage enters a normal operating mode. The low energy transfer operating mode has a substantially reduced switching rate and pulse width from that of the normal operating mode.

摘要翻译： 具有从第二开关功率级操作的辅助电源的级联功率转换器通过在启动过程中提前启动辅助电源来提供有效的操作。 在第二开关功率级中启动低能量传递操作模式以对辅助电源输出进行充电，而不会在负载下产生显着的中断。 在第一开关功率级开始并且中间节点电压已经增加到足以操作第二开关功率级的电平之后，最终开关功率级进入正常工作模式。 低能量转移操作模式与正常操作模式相比具有显着降低的开关速率和脉冲宽度。

公开(公告)号：US09313840B2

公开(公告)日：2016-04-12

申请号：US13486625

申请日：2012-06-01

申请人： Robert T. Grisamore ,  Zhaohui He

发明人： Robert T. Grisamore ,  Zhaohui He

IPC分类号： H05B37/02 ,  H05B33/08 ,  H02M3/335

CPC分类号： H05B33/0815 ,  H02M3/33523 ,  Y02B20/346 ,  Y02B70/1433

摘要： A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the controller determines the one or more switching power converter control parameters using a resonant period factor from a reflected secondary-side voltage and an occurrence of an approximate zero voltage crossing of the secondary-side voltage during a resonant period of the secondary-side voltage. In at least one embodiment, the switching power converter control parameters include (i) an estimated time of a minimum value of the secondary-side voltage during the resonant period and (ii) an estimated time at which a current in the secondary-side of the transformer decayed to approximately zero.

摘要翻译： 配电系统包括开关电源转换器的控制器，以控制开关功率转换器并确定一个或多个开关功率转换器控制参数。 在至少一个实施例中，控制器使用来自反射的次级侧电压的谐振周期因子和在次级侧电压的共振周期期间发生次级侧电压的近似零电压交叉来确定一个或多个开关功率转换器控制参数 次级侧电压。 在至少一个实施例中，开关功率转换器控制参数包括（i）在谐振周期期间次级侧电压的最小值的估计时间，以及（ii）次级侧的电流的估计时间 变压器衰减到零。