公开(公告)号：US07868570B2

公开(公告)日：2011-01-11

申请号：US11950131

申请日：2007-12-04

申请人： Jian Ni ,  Lijian Wu ,  Wanbing Jin ,  Jianping Ying ,  Shih-Ming Huang ,  Wen-Shi Huang

发明人： Jian Ni ,  Lijian Wu ,  Wanbing Jin ,  Jianping Ying ,  Shih-Ming Huang ,  Wen-Shi Huang

IPC分类号： H02P6/00 ,  H02P6/14

CPC分类号： H02P6/15

摘要： A controller of a brushless DC electric machine having a rotor and at least a stator winding powered by a driving voltage is provided. The controller includes a position sensor, an advance angle control circuit, and a driving circuit. The position sensor is moved along a reverse rotating direction of the rotor by a prepositioned angle for outputting a position signal. The advance angle control circuit receives the position signal and a driving voltage reproduction signal reproduced from the driving voltage and outputs a commutation control signal lagging the position signal by a first delay time. The driving circuit receives the commutation control signal for outputting a driving signal for controlling a commutation of the brushless DC electric machine.

摘要翻译： 提供一种具有转子和至少由驱动电压驱动的定子绕组的无刷直流电机的控制器。 控制器包括位置传感器，提前角控制电路和驱动电路。 位置传感器沿转子的反向旋转方向移动一预定角度，用于输出位置信号。 提前角控制电路接收从驱动电压再现的位置信号和驱动电压再现信号，并输出滞后于位置信号第一延迟时间的换向控制信号。 驱动电路接收用于输出用于控制无刷直流电机的换向的驱动信号的换向控制信号。

公开(公告)号：US07495935B2

公开(公告)日：2009-02-24

申请号：US11439752

申请日：2006-05-24

申请人： Lin Chen ,  Zhiqiang Jiang ,  Jianping Ying

发明人： Lin Chen ,  Zhiqiang Jiang ,  Jianping Ying

IPC分类号： H02M3/335

CPC分类号： H02M7/4807

摘要： The proposed DC/AC power converter for transforming a DC input source to an AC output source includes a transformer having a primary and a secondary windings, a switch network having a first switch electrically connected between the DC input source and the primary winding, a two-way current-transmitting module electrically connected between the secondary winding and the AC output source and a controllable conducting circuit electrically connected to the secondary winding. In which, the controllable conducting circuit is conducting when the two-way current-transmitting module transmits an electrical energy from the primary winding to the secondary winding and a current flowing through the primary winding is decreasing so as to lower down a voltage stress of the first switch of the switch network.

摘要翻译： 所提出的用于将DC输入源变换为AC输出源的DC / AC功率转换器包括具有初级和次级绕组的变压器，具有电连接在DC输入源和初级绕组之间的第一开关的开关网络， 电连接在次级绕组和AC输出源之间的电流传输模块以及电连接到次级绕组的可控导电电路。 其中，当双向电流传输模块将电能从初级绕组传递到次级绕组时，可控制的导通电路导通，并且流经初级绕组的电流减小，以便降低电压应力 交换机网络的第一个交换机。

公开(公告)号：US07495934B2

公开(公告)日：2009-02-24

申请号：US11470090

申请日：2006-09-05

申请人： Lifeng Chen ,  Teng Liu ,  Hongjian Gan ,  Jianping Ying

发明人： Lifeng Chen ,  Teng Liu ,  Hongjian Gan ,  Jianping Ying

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： The adaptive synchronous rectification control circuit and its controlling method for a power converter are provided. The proposed control circuit having a transformer with a primary and a secondary sides, a switch coupled to the primary side and a synchronous rectification transistor (SRT) coupled to the secondary side and having a parasitic diode includes a preprocessor receiving a source-drain voltage of the SRT and outputting a first signal, and a control set receiving the first signal, a pre-determined voltage and a pulse signal synchronized to the switch and generating a second signal synchronized to the switch for controlling the SRT, in which a selection of the pre-determined voltage makes the source-drain voltage of the SRT ranged from 0 to a conducting voltage of the parasitic diode of the SRT.

摘要翻译： 提供了自适应同步整流控制电路及其电源转换器的控制方法。 所提出的控制电路具有具有初级侧和次级侧的变压器，耦合到初级侧的开关和耦合到次级侧并具有寄生二极管的同步整流晶体管（SRT），包括预处理器，其接收源极 - 漏极电压 SRT并且输出第一信号，以及接收第一信号的控制集，与开关同步的预定电压和脉冲信号，并产生与开关同步的第二信号以控制SRT，其中选择 预定电压使SRT的源极 - 漏极电压范围为0到SRT的寄生二极管的导通电压。

公开(公告)号：US07199526B2

公开(公告)日：2007-04-03

申请号：US11124012

申请日：2005-05-06

申请人： Chenyang Liu ,  Xiaoju Hu ,  Yuanyuan Zhong ,  Jianping Ying

发明人： Chenyang Liu ,  Xiaoju Hu ,  Yuanyuan Zhong ,  Jianping Ying

IPC分类号： H05B37/00

CPC分类号： H05B41/295

摘要： An electronic ballast capable of extending life of the fluorescent lamp is disclosed. The electronic ballast according to the present invention comprises a DC/AC converter, a fluorescent lamp, a transformer, a preheating transformer and an AC switch. Wherein, the AC switch is turned off during a preheating period of time for the fluorescent lamp. Due to adoption of a preheating transformer in the secondary side and an AC switch for the electronic ballast according to the present invention, the voltage drop across the fluorescent lamp can be reduced during the preheating period of time, and accordingly no glow current would appear. Therefore, life of the electronic ballast can be effectively extended.

摘要翻译： 公开了能够延长荧光灯寿命的电子镇流器。 根据本发明的电子镇流器包括DC / AC转换器，荧光灯，变压器，预热变压器和AC开关。 其中，在荧光灯的预热时间段期间，AC开关被关闭。 由于采用了二次侧的预热变压器和根据本发明的用于电子镇流器的AC开关，所以可以在预热时间段期间降低荧光灯两端的电压降，因此不会出现辉光电流。 因此，可以有效地延长电子镇流器的使用寿命。

公开(公告)号：US20070008750A1

公开(公告)日：2007-01-11

申请号：US11439752

申请日：2006-05-24

申请人： Lin Chen ,  Zhiqiang Jiang ,  Jianping Ying

发明人： Lin Chen ,  Zhiqiang Jiang ,  Jianping Ying

IPC分类号： H02M3/335

CPC分类号： H02M7/4807

摘要： The proposed DC/AC power converter for transforming a DC input source to an AC output source includes a transformer having a primary and a secondary windings, a switch network having a first switch electrically connected between the DC input source and the primary winding, a two-way current-transmitting module electrically connected between the secondary winding and the AC output source and a controllable conducting circuit electrically connected to the secondary winding. In which, the controllable conducting circuit is conducting when the two-way current-transmitting module transmits an electrical energy from the primary winding to the secondary winding and a current flowing through the primary winding is decreasing so as to lower down a voltage stress of the first switch of the switch network.

摘要翻译： 所提出的用于将DC输入源变换为AC输出源的DC / AC功率转换器包括具有初级和次级绕组的变压器，具有电连接在DC输入源和初级绕组之间的第一开关的开关网络， 电连接在次级绕组和AC输出源之间的电流传输模块以及电连接到次级绕组的可控导电电路。 其中，当双向电流传输模块将电能从初级绕组传递到次级绕组时，可控制的导通电路导通，并且流经初级绕组的电流减小，以便降低电压应力 交换机网络的第一个交换机。

公开(公告)号：US20060250094A1

公开(公告)日：2006-11-09

申请号：US11124012

申请日：2005-05-06

申请人： Chenyang Liu ,  Xiaoju Hu ,  Yuanyuan Zhong ,  Jianping Ying

发明人： Chenyang Liu ,  Xiaoju Hu ,  Yuanyuan Zhong ,  Jianping Ying

IPC分类号： H05B41/16

CPC分类号： H05B41/295

摘要： An electronic ballast capable of extending life of the fluorescent lamp is disclosed. The electronic ballast according to the present invention comprises a DC/AC converter, a fluorescent lamp, a transformer, a preheating transformer and an AC switch. Wherein, the AC switch is turned off during a preheating period of time for the fluorescent lamp. Due to adoption of a preheating transformer in the secondary side and an AC switch for the electronic ballast according to the present invention, the voltage drop across the fluorescent lamp can be reduced during the preheating period of time, and accordingly no glow current would appear. Therefore, life of the electronic ballast can be effectively extended.

摘要翻译： 公开了能够延长荧光灯寿命的电子镇流器。 根据本发明的电子镇流器包括DC / AC转换器，荧光灯，变压器，预热变压器和AC开关。 其中，在荧光灯的预热时间段期间，AC开关被关闭。 由于采用了二次侧的预热变压器和根据本发明的用于电子镇流器的AC开关，所以可以在预热时间段期间降低荧光灯两端的电压降，因此不会出现辉光电流。 因此，可以有效地延长电子镇流器的使用寿命。

公开(公告)号：US20060187686A1

公开(公告)日：2006-08-24

申请号：US11158534

申请日：2005-06-21

申请人： Chaoqun Sun ,  Hongjian Gan ,  Jianping Ying

发明人： Chaoqun Sun ,  Hongjian Gan ,  Jianping Ying

IPC分类号： H02M3/335

CPC分类号： H02M3/3376 ,  H02M3/33592 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02P80/112

摘要： An LLC series resonant converter and a driving method for the synchronous rectification power switches thereof are provided. The LLC series resonant converter includes a bridge circuit, a resonant network, a transformer, a rectification circuit, and a frequency adjustment controller. The bridge circuit includes at least one pair of power switches. The power switches drive the resonant network. The rectification circuit includes at least one pair of synchronous rectification power switches. The synchronous rectification power switches and the power switches have a mapping relation between them. The frequency adjustment controller provides driving signals to the synchronous rectification power switches in response to the operating frequency of the LLC series resonant converter and the series resonant frequency of the resonant network, to implement synchronous rectification in the LLC series resonant converter.

摘要翻译： 提供一种LLC串联谐振变换器及其同步整流电源开关的驱动方法。 LLC串联谐振变换器包括桥式电路，谐振网络，变压器，整流电路和频率调节控制器。 桥接电路包括至少一对电源开关。 电源开关驱动谐振网络。 整流电路包括至少一对同步整流电源开关。 同步整流电源开关和电源开关之间具有映射关系。 频率调节控制器响应于LLC串联谐振变换器的工作频率和谐振网络的串联谐振频率向同步整流功率开关提供驱动信号，以在LLC串联谐振变换器中实现同步整流。

公开(公告)号：US06944036B2

公开(公告)日：2005-09-13

申请号：US10749919

申请日：2003-12-31

申请人： Chao Yan ,  Hongyang Wu ,  Heoyi Ye ,  Jianping Ying

发明人： Chao Yan ,  Hongyang Wu ,  Heoyi Ye ,  Jianping Ying

IPC分类号： H02H7/122 ,  H02M1/34 ,  H02M3/158 ,  H02M3/337 ,  H02M7/5387

CPC分类号： H02M1/34 ,  H02M3/3376 ,  H02M2001/346 ,  H02M2001/348 ,  Y02B70/1491

摘要： In those conventional arts, a DC/DC converter with secondary clamp circuit has a problem of voltage oscillation, and a DC/DC converter with primary clamp circuit has problems of heat and clamping losses due to larger forward and reverse currents passing the primary clamp circuit. The present invention applies a tapped inductor or a set of coupling inductors to a DC/DC converter with primary clamp circuit for reducing the voltage oscillation, and furthermore to decrease the forward and reverse current passing through the clamp circuit for reducing the clamping losses of the clamp circuit.

摘要翻译： 在这些传统技术中，具有二次钳位电路的DC / DC转换器具有电压振荡的问题，并且具有初级钳位电路的DC / DC转换器具有由于较大的正向和反向电流通过初级钳位电路而导致的热和钳位损耗的问题 。 本发明将带有抽头的电感器或一组耦合电感器应用于具有用于降低电压振荡的初级钳位电路的DC / DC转换器，并且还减少了通过钳位电路的正向和反向电流，以减少钳位电流的钳位损耗 钳位电路。

公开(公告)号：US20050024901A1

公开(公告)日：2005-02-03

申请号：US10901573

申请日：2004-07-27

申请人： Jianping Ying ,  Hua Lin ,  Qiuhua Zhu ,  Wen-Yin Tsai

发明人： Jianping Ying ,  Hua Lin ,  Qiuhua Zhu ,  Wen-Yin Tsai

IPC分类号： H02M3/335 ,  H02M7/519

CPC分类号： H02M3/33569 ,  H02M3/33592 ,  H02M2001/0048 ,  Y02B70/1475 ,  Y02B70/1491 ,  Y10T307/625

摘要： The push-pull converter for zero-voltage switching of the switches on the primary side of the transformer to have a relatively lower loss is proposed. Which includes: a transformer having a primary winding with a center tap and a secondary winding, an electrical energy storage device having a first terminal coupled to the center tap of the primary winding and a second terminal coupled to a ground, a first switch having a first terminal coupled to a first terminal of the primary winding and a second terminal coupled to the ground, a second switch having a first terminal coupled to the ground and a second terminal coupled to a second terminal of the primary winding, and a rectifier circuit coupled to the secondary winding for transforming an AC output of the secondary winding to a DC output.

摘要翻译： 提出了用于变压器初级侧的开关零电压开关的推挽转换器具有相对较低的损耗。 其包括：具有具有中心抽头和次级绕组的初级绕组的变压器，具有耦合到所述初级绕组的中心抽头的第一端子和耦合到地的第二端子的电能存储装置，具有第一开关的第一开关， 第一端子，其耦合到初级绕组的第一端子和耦合到地的第二端子，第二开关，其具有耦合到地的第一端子和耦合到初级绕组的第二端子的第二端子，以及整流器电路耦合 到次级绕组，用于将次级绕组的AC输出转换成DC输出。

公开(公告)号：US06534938B1

公开(公告)日：2003-03-18

申请号：US09964757

申请日：2001-09-28

申请人： Zhigan Wu ,  Jin Wang ,  Jianping Ying

发明人： Zhigan Wu ,  Jin Wang ,  Jianping Ying

IPC分类号： H02P506

CPC分类号： H02P6/182

摘要： A control system operates with a PWM speed regulation of a sensorless BLDC motor with a plurality of windings. A hybrid method is present in the invention utilizing BEMF induced in stator windings to indicate the commutation instant and a falling edge detection method to override PWM chopping and commutation noises. The present invention achieves reliable sensorless rotor position detection with relative concise and low cost circuit as well as little software expense. The control device of the present invention includes a comparator for generating the BEMF zero crossing points (ZCP), and means for deriving rotor position information by detecting the falling edge (or rising edge for low-side chopping case) of the generated ZCPs.

摘要翻译： 控制系统利用具有多个绕组的无传感器BLDC电动机的PWM调速来操作。 本发明中存在利用定子绕组中引入的BEMF来指示换向时刻的混合方法和用于覆盖PWM斩波和换向噪声的下降沿检测方法。 本发明实现了可靠的无传感器转子位置检测，具有相对简洁和低成本的电路以及很少的软件费用。 本发明的控制装置包括用于产生BEMF过零点（ZCP）的比较器，以及用于通过检测所生成的ZCP的下降沿（或低侧斩波情况的上升沿）导出转子位置信息的装置。