公开(公告)号：US20060220602A1

公开(公告)日：2006-10-05

申请号：US11284018

申请日：2005-11-21

申请人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Lijian Wu ,  Shih-Ming Huang ,  Wen-Shi Huang

发明人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Lijian Wu ,  Shih-Ming Huang ,  Wen-Shi Huang

IPC分类号： H02P1/18

CPC分类号： H02P6/20 ,  H02P6/185 ,  H02P6/26

摘要： The methods for starting a Hall-less single-phase BLDCM having an asymmetrical air gap are proposed. The provided methods are employed to input a specific amount of current impulse and stop the current impulse at a specific time such that the rotor of the single-phase BLDCM having an asymmetrical air gap can be realized to rotate in the pre-determined direction through one of the cogging torque and the rotor inertia after that specific time so as to accomplish the normal starting of a motor without the Hall-effect sensor.

摘要翻译： 提出了启动具有不对称气隙的无霍尔单相BLDCM的方法。 所提供的方法用于输入特定量的电流脉冲并在特定时间停止电流脉冲，使得具有不对称气隙的单相BLDCM的转子可以实现为沿预定方向旋转通过一个 的齿槽转矩和转子惯性之间的差别，以便在没有霍尔效应传感器的情况下实现马达的正常启动。

公开(公告)号：US07116087B2

公开(公告)日：2006-10-03

申请号：US10916307

申请日：2004-08-11

申请人： Qingyou Zhang ,  Aibin Qiu ,  Jianping Ying ,  Jianhong Zeng

发明人： Qingyou Zhang ,  Aibin Qiu ,  Jianping Ying ,  Jianhong Zeng

IPC分类号： G05F1/40

CPC分类号： H02M3/1584 ,  H02M1/4225 ,  H02M2003/1586 ,  Y02B70/126 ,  Y02P80/112

摘要： The provided method and control circuit are employed to alternately control the dual boost PFC circuits. The control circuit for alternately controlling parallel-connected first and second boost circuits of a dual boost PFC circuit to achieve a current-sharing of the first and the second boost circuits includes: a first control circuit having a first current control loop for employing an output voltage of the PFC circuit, a feed-forward voltage, and an input reference voltage to generate a current reference, and sending the current reference to an input terminal of the first current control loop to generate a first PWM signal to drive the first boost circuit, and a second control circuit having a second current control loop for receiving the current reference through an input terminal of the second current control loop to generate a second PWM signal to drive the second boost circuit.

摘要翻译： 所提供的方法和控制电路用于交替地控制双升压PFC电路。 用于交替地控制双升压PFC电路的并联连接的第一和第二升压电路以实现第一和第二升压电路的电流共享的控制电路包括：第一控制电路，具有用于采用输出 PFC电路的电压，前馈电压和输入参考电压以产生电流参考，并且将电流基准发送到第一电流控制环路的输入端以产生第一PWM信号以驱动第一升压电路 以及具有第二电流控制回路的第二控制电路，用于通过第二电流控制回路的输入端接收电流基准，以产生驱动第二升压电路的第二PWM信号。

公开(公告)号：US07061777B2

公开(公告)日：2006-06-13

申请号：US10907831

申请日：2005-04-18

申请人： Jianhong Zeng ,  Jianping Ying ,  Xiaojun Deng ,  Xingkuan Guo ,  Aiming Xiong

发明人： Jianhong Zeng ,  Jianping Ying ,  Xiaojun Deng ,  Xingkuan Guo ,  Aiming Xiong

IPC分类号： H02M3/335 ,  H02M7/538

CPC分类号： H02M3/33569 ,  H02M7/487

摘要： An input stage circuit of a three-level DC/DC converter is provided. The input stage circuit uses metal-oxide-semiconductor field effect transistors (MOSFETs) to discharge a flying capacitor to maintain the voltage across the flying capacitor at a half of the input voltage. Not only can the input stage circuit solve the high voltage issue across the flying capacitor in the prior art, but the circuit is able to operate normally without increasing power consumption during discharging, thereby avoiding problems of the prior art.

摘要翻译： 提供三电平DC / DC转换器的输入级电路。 输入级电路使用金属氧化物半导体场效应晶体管（MOSFET）来放电飞跨电容器，以将跨越电容器的电压保持在输入电压的一半。 输入级电路不仅可以解决现有技术中跨越飞溅电容器的高电压问题，而且电路能够正常工作，而不会在放电期间增加功耗，从而避免了现有技术的问题。

公开(公告)号：US07009852B2

公开(公告)日：2006-03-07

申请号：US10903154

申请日：2004-07-30

申请人： Jianping Ying ,  Qingyou Zhang ,  Aibin Qiu ,  Teng Liu ,  Xingkuan Guo ,  Jianhong Zeng

发明人： Jianping Ying ,  Qingyou Zhang ,  Aibin Qiu ,  Teng Liu ,  Xingkuan Guo ,  Jianhong Zeng

IPC分类号： H02M3/335

CPC分类号： H02M3/1584 ,  H02M1/4208 ,  H02M3/337 ,  H02M2001/007 ,  Y02B70/126

摘要： An apparatus for reducing the heat losses caused by the DC Bus capacitor current is proposed. The apparatus includes: a double frequency boost converter circuit having two boost converter circuits coupled in parallel, in which two switches, respectively disposed on the two boost converter circuits, are turned on and off alternately to produce an output current having a frequency twice that of control signals of the two switches, and to offer a DC bus respectively, a full-bridge DC-DC converter coupled to an output terminal of the double frequency boost converter circuit for transforming an output of the DC bus to a DC voltage, and a DC bus capacitor coupled to the double frequency boost converter circuit and the full-bridge DC-DC converter in parallel for balancing two corresponding transient powers of the double frequency boost converter circuit and the full-bridge DC-DC converter respectively.

摘要翻译： 提出了一种降低由直流总线电容器电流引起的热损失的装置。 该装置包括：具有并联耦合的两个升压转换器电路的双倍升压转换器电路，其中分别布置在两个升压转换器电路上的两个开关交替地导通和截止，以产生具有频率两倍的频率的输出电流 控制所述两个开关的信号，并分别提供DC总线，耦合到所述双倍升压转换器电路的输出端的全桥DC-DC转换器，用于将所述DC总线的输出转换为DC电压，以及 分别与双倍升压转换器电路和全桥DC-DC转换器并联的DC总线电容器分别平衡双倍升压转换器电路和全桥DC-DC转换器的两个对应的瞬态功率。

公开(公告)号：US06781385B2

公开(公告)日：2004-08-24

申请号：US10137619

申请日：2002-05-02

申请人： Jianping Ying ,  Jin Wang ,  Zhigan Wu

发明人： Jianping Ying ,  Jin Wang ,  Zhigan Wu

IPC分类号： G01R3108

CPC分类号： G01R19/14

摘要： The invention relates to an apparatus and a method for detecting a current direction in a PWM converter or an inverter having one or more upper and lower arms, each of which consists of a switching device with an anti-parallel diode. The voltage across the switching device presents a different value and a polarity that depend on the direction of the current flowing through the switching device, wherein the current direction is acquired by sampling this voltage in the period of the trigger signal being on. In a case of small current, this sampled voltage value is relatively large to the flowing current magnitude and is easy to be distinguished. Furthermore, this invention presents a method for obtaining the phase angle between the load current and the output voltage, and judging whether the output current is zero or includes DC component. As a result, this method presents high precision.

摘要翻译： 本发明涉及一种用于检测PWM转换器或具有一个或多个上臂和下臂的逆变器的电流方向的装置和方法，每一个由具有反并联二极管的开关装置组成。 开关器件两端的电压呈现出不同的值和极性，这取决于流过开关器件的电流的方向，其中通过在触发信号导通的时段内对该电压进行采样来获取电流方向。 在小电流的情况下，该采样电压值对于流动电流大小相对较大并且易于区分。 此外，本发明提供了一种用于获得负载电流和输出电压之间的相位角的方法，并且判断输出电流是零还是包括直流分量。 因此，该方法具有高精度。

公开(公告)号：US06778410B2

公开(公告)日：2004-08-17

申请号：US10283740

申请日：2002-10-30

申请人： Jianhong Zeng ,  Jianping Ying ,  Qingyou Zhang

发明人： Jianhong Zeng ,  Jianping Ying ,  Qingyou Zhang

IPC分类号： H02M3335

CPC分类号： H02M3/33592 ,  H02M1/14 ,  H02M3/3372 ,  Y02B70/1475

摘要： A DC-to-DC converter. The converter has three inductors, two capacitors, a first switch and a second switch, a first rectifier and a second rectifier, and a transformer with a primary winding and a secondary winding. The first switch and the second switch are turned on alternately according to a controlling signal, and a current may flow through the primary winding of the transformer, thereby transferring energy to the second winding. The first rectifier and the second rectifier operate according to the energy transferred from the primary winding to obtain a solid current through the third inductor, and a solid DC output voltage is output to the load.

摘要翻译： DC-DC转换器。 该转换器具有三个电感器，两个电容器，第一开关和第二开关，第一整流器和第二整流器，以及具有初级绕组和次级绕组的变压器。 第一开关和第二开关根据控制信号交替地接通，并且电流可以流过变压器的初级绕组，从而将能量传递到第二绕组。 第一整流器和第二整流器根据从初级绕组传递的能量来操作，以获得通过第三电感器的固态电流，并且固体DC输出电压被输出到负载。

公开(公告)号：US09013106B2

公开(公告)日：2015-04-21

申请号：US13242170

申请日：2011-09-23

申请人： Weiqiang Zhang ,  Qi Zhang ,  Yan Zhong ,  Ching-Ho Chou ,  Jianping Ying

发明人： Weiqiang Zhang ,  Qi Zhang ,  Yan Zhong ,  Ching-Ho Chou ,  Jianping Ying

IPC分类号： H01J13/32 ,  H05B41/295

CPC分类号： H05B41/295

摘要： Provided is a lamp ballast having a filament heating apparatus for gas discharge lamp, including a PFC converter for receiving an AC input voltage and converting the AC input voltage into a DC bus voltage; an inverter connected to an output end of the PFC converter for converting the DC bus voltage into an AC output voltage for driving gas discharge lamps; and a filament heating apparatus connected to the output end of the PFC converter. The filament heating apparatus includes an auxiliary heating circuit for converting the DC bus voltage into a heating power for pre-heating the filaments of the gas discharge lamps; and a control circuit connected to the inverter and the auxiliary heating circuit for generating an auxiliary voltage according to the heating power to activate the PFC converter. After the auxiliary heating circuit has been operating for a predetermined period of time, the auxiliary heating circuit is turned off first and then the inverter is turned on; or otherwise the inverter is turned on first and then the auxiliary heating circuit is turned off.

摘要翻译： 提供一种具有用于气体放电灯的灯丝加热装置的灯镇流器，包括用于接收AC输入电压并将AC输入电压转换成DC总线电压的PFC转换器; 连接到PFC转换器的输出端的逆变器，用于将DC总线电压转换成用于驱动气体放电灯的AC输出电压; 以及连接到PFC转换器的输出端的灯丝加热装置。 灯丝加热装置包括辅助加热电路，用于将直流母线电压转换成用于对气体放电灯的细丝进行预热的加热功率; 以及连接到逆变器和辅助加热电路的控制电路，用于根据加热功率产生辅助电压以激活PFC转换器。 在辅助加热电路已经运行预定时间段之后，首先关闭辅助加热电路，然后使逆变器接通; 否则逆变器首先接通，然后辅助加热电路关闭。

公开(公告)号：US08946997B2

公开(公告)日：2015-02-03

申请号：US13339675

申请日：2011-12-29

申请人： Yuanyuan Zhong ,  Weiqiang Zhang ,  Jianping Ying

发明人： Yuanyuan Zhong ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： H05B37/04 ,  G01R31/24 ,  H05B41/285

CPC分类号： G01R31/24 ,  H05B41/2855

摘要： Disclosed is an end-of-life detector for gas discharge lamp and the ballast incorporating the same. The end-of-life detector includes a lamp state signal detecting circuit for detecting the lamp state signal of at least one first gas discharge lamp and generating a positive voltage signal and a negative voltage signal accordingly; a comparing circuit for comparing the positive voltage signal with a positive selecting voltage and comparing the negative voltage signal with a negative selecting voltage, and in response thereto generating a positive control signal and a negative control signal; and a positive/negative duty time interval detecting circuit for generating a lamp life state signal which is generated by a difference between a positive duty time interval and a negative duty time interval. The lamp life state signal is varied along with the difference between the positive duty time interval and the negative duty time interval.

摘要翻译： 公开了一种用于气体放电灯的寿命终止检测器和包括其的镇流器。 寿命终止检测器包括灯状态信号检测电路，用于检测至少一个第一气体放电灯的灯状态信号，并相应地产生正电压信号和负电压信号; 比较电路，用于将正电压信号与正选择电压进行比较，并将负电压信号与负选择电压进行比较，并响应于产生正控制信号和负控制信号; 以及正/负占空时间间隔检测电路，用于产生由正占空时间间隔和负占空时间间隔之间的差产生的灯寿命状态信号。 灯寿命状态信号随正负时间间隔和负占空时间间隔之间的差异而变化。

公开(公告)号：US08536735B2

公开(公告)日：2013-09-17

申请号：US13364058

申请日：2012-02-01

申请人： Chao Yan ,  Yiqing Ye ,  Chongfeng Zheng ,  Jianping Ying

发明人： Chao Yan ,  Yiqing Ye ,  Chongfeng Zheng ,  Jianping Ying

IPC分类号： H02J1/00 ,  H02J3/00 ,  H02J1/10 ,  H02M3/335

CPC分类号： H02M3/3376 ,  H02M2001/0058 ,  H02M2001/0074 ,  Y02B70/1491 ,  Y10T307/685 ,  Y10T307/707

摘要： In one aspect of the present invention, a converter circuit with input voltage balance includes a plurality of modules having inputs electrically series-connected to each other and outputs electrically parallel-connected to each other and a plurality of switching circuits with each electrically connected to an input connection node of a corresponding module and its immediate next module, and configured such that when an input voltage of the corresponding module or its immediate next module is in a desired range from a first predetermine value to a second predetermined value greater than the first predetermined value, the switching circuit operates in an open state, while when the input voltage is out of the desired range, the switching circuit operates in a conductive state so as to regulate the input voltage of the corresponding module or its immediate next module in the desired range.

摘要翻译： 在本发明的一个方面，具有输入电压平衡的转换器电路包括多个模块，其具有彼此电串联连接的输入，并且彼此电并联连接，并且多个开关电路各自电连接到 相应模块的输入连接节点及其直接下一个模块，并且被配置为使得当相应模块或其即时下一个模块的输入电压处于从第一预定值到大于第一预定值的第二预定值的期望范围时 开关电路工作在打开状态，而当输入电压超出所需范围时，开关电路工作在导通状态，以便调节相应模块或其即时下一个模块的输入电压达到期望值 范围。

公开(公告)号：US20130020966A1

公开(公告)日：2013-01-24

申请号：US13533671

申请日：2012-06-26

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： H05B41/2858 ,  H05B41/2828

摘要： A method and circuit for improving the crest factor of the gas discharge lamp. The method includes: the signal of the gas discharge lamp can be sampled to get a status signal; whether the present stage of the gas discharge lamp is at warm up stage or constant power stage can be judged based on the result of comparison between the status signal and a preset value; preset parameters can be selected based on the stage of the gas discharge lamp, the first parameter can be selected when the gas discharge lamp is at a warm up stage, and the second parameter can be selected when the gas discharge lamp is at a constant power stage; a control signal can be outputted during the lamp current commutation based on the selected first or second parameter to improve the crest factor of the gas discharge lamp.

摘要翻译： 一种用于改善气体放电灯的波峰因数的方法和电路。 该方法包括：对气体放电灯的信号进行采样，得到状态信号; 可以基于状态信号和预设值之间的比较结果判断气体放电灯的当前阶段是处于预热阶段还是恒定功率阶段; 可以根据气体放电灯的阶段选择预设参数，当气体放电灯处于预热阶段时，可以选择第一个参数，而当气体放电灯处于恒定功率时可以选择第二个参数 阶段; 可以基于所选择的第一或第二参数在灯电流换向期间输出控制信号，以改善气体放电灯的波峰因数。