公开(公告)号：US07061777B2

公开(公告)日：2006-06-13

申请号：US10907831

申请日：2005-04-18

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

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

IPC: H02M3/335 ,  H02M7/538

CPC classification number: H02M3/33569 ,  H02M7/487

Abstract: 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.

Abstract translation: 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

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

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

IPC: H02M3/335

CPC classification number: H02M3/1584 ,  H02M1/4208 ,  H02M3/337 ,  H02M2001/007 ,  Y02B70/126

Abstract: 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.

Abstract translation: 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

Applicant: Jianping Ying ,  Jin Wang ,  Zhigan Wu

Inventor： Jianping Ying ,  Jin Wang ,  Zhigan Wu

IPC: G01R3108

CPC classification number: G01R19/14

Abstract: 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.

Abstract translation: 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

Applicant: Jianhong Zeng ,  Jianping Ying ,  Qingyou Zhang

Inventor： Jianhong Zeng ,  Jianping Ying ,  Qingyou Zhang

IPC: H02M3335

CPC classification number: H02M3/33592 ,  H02M1/14 ,  H02M3/3372 ,  Y02B70/1475

Abstract: 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.

Abstract translation: 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

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

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

IPC: H01J13/32 ,  H05B41/295

CPC classification number: H05B41/295

Abstract: 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.

Abstract translation: 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

Applicant: Yuanyuan Zhong ,  Weiqiang Zhang ,  Jianping Ying

Inventor： Yuanyuan Zhong ,  Weiqiang Zhang ,  Jianping Ying

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

CPC classification number: G01R31/24 ,  H05B41/2855

Abstract: 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.

Abstract translation: 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：US08742670B2

公开(公告)日：2014-06-03

申请号：US13530380

申请日：2012-06-22

Applicant: Yan Zhong ,  Weiqiang Zhang ,  JianPing Ying

Inventor： Yan Zhong ,  Weiqiang Zhang ,  JianPing Ying

IPC: H05B41/36 ,  H01J61/52

CPC classification number: H05B41/2828 ,  H05B41/3927

Abstract: The electronic ballast includes: a square wave generator that includes a plurality of switching elements to convert a DC input voltage to an AC square wave output voltage; a transformer that includes a driving winding, a plurality of control windings, at least one inductive winding and at least one control driving circuit. The control windings controls the plurality of switching elements to turn on alternately; a resonant circuit that constitutes a resonant loop together with the driving winding is electrically connected with an output terminal of the square wave generator to drive the light emitting element. The control driving circuit is connected with two terminals of the inductive winding in parallel and receives a control signal to control a voltage across the inductive winding so as to control conducting time of at least one of the switching elements.

Abstract translation: 电子镇流器包括：方波发生器，其包括将DC输入电压转换为AC方波输出电压的多个开关元件; 包括驱动绕组，多个控制绕组，至少一个感应绕组和至少一个控制驱动电路的变压器。 控制绕组控制多个开关元件交替地接通; 与驱动绕组一起构成谐振回路的谐振电路与方波发生器的输出端电连接，驱动发光元件。 控制驱动电路并联连接电感线圈的两个端子，并接收控制信号以控制感应绕组两端的电压，以控制至少一个开关元件的导通时间。

公开(公告)号：US08536735B2

公开(公告)日：2013-09-17

申请号：US13364058

申请日：2012-02-01

Applicant: Chao Yan ,  Yiqing Ye ,  Chongfeng Zheng ,  Jianping Ying

Inventor： Chao Yan ,  Yiqing Ye ,  Chongfeng Zheng ,  Jianping Ying

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

CPC classification number: H02M3/3376 ,  H02M2001/0058 ,  H02M2001/0074 ,  Y02B70/1491 ,  Y10T307/685 ,  Y10T307/707

Abstract: 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.

Abstract translation: 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

Applicant: Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

Inventor： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

IPC: H05B37/02

CPC classification number: H05B41/2858 ,  H05B41/2828

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120313539A1

公开(公告)日：2012-12-13

申请号：US13239072

申请日：2011-09-21

Applicant: Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

Inventor： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

IPC: H05B41/36

CPC classification number: H05B41/2886 ,  Y02B20/202

Abstract: 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.

Abstract translation: 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。