公开(公告)号：KR1020090120044A

公开(公告)日：2009-11-24

申请号：KR1020080045895

申请日：2008-05-19

Applicant: 한국전기연구원

Inventor： 김종현 ,  류명효 ,  하석진 ,  정혜만

IPC: H05B41/24 ,  H05B41/288 ,  H05B41/38

CPC classification number: H05B41/38 ,  H05B41/042 ,  H05B41/24 ,  H05B41/288

Abstract: PURPOSE: A dimming device of ballast for driving a surface light source is provided to easily perform digital dimming by using a photocoupler and an FET for signals. CONSTITUTION: A dimming device formed in ballast of a surface light source includes a dimming part. The dimming part includes FETs for signals, resistors, and photocouplers. The resistors are serially connected to the FETs for signals. The photocouplers deliver an external signal to a gate of the FET for signals, are electrically connected to a power factor corrector of the ballast, and perform illuminance control of 2N step by controlling an output voltage of the power factor corrector.

Abstract translation: 目的：提供用于驱动表面光源的镇流器的调光装置，以便通过使用光电耦合器和FET来进行信号的数字调光。 构成：在面光源的镇流器中形成的调光装置包括调光部。 调光部分包括用于信号，电阻和光电耦合器的FET。 电阻串联连接到FET用于信号。 光电耦合器向FET的栅极提供外部信号用于信号，电连接到镇流器的功率因数校正器，并且通过控制功率因数校正器的输出电压来执行2N级的照度控制。

公开(公告)号：KR1020080104468A

公开(公告)日：2008-12-03

申请号：KR1020070051291

申请日：2007-05-28

Applicant: 한국전기연구원

Inventor： 김종현 ,  유동욱 ,  류명효 ,  정혜만 ,  하석진

IPC: H02M7/5387

Abstract: An apparatus for protecting a converter is provided to prevent an operation area of the converter from being shifted from zero-voltage switching domain to zero-current switching domain. In an apparatus for protecting a converter, a sensing unit(20) senses the output voltage(VO) and output current(IO) of the converter(10). A processing unit(30) processes an output current and output voltage and generates a processing voltage(VT) and a processing electric current(IT). A phase comparator(40) compares the phase of the processing voltage with that of the processing current, outputs a reference value(Q). A controller(50) controls the operation of converter according to the reference value.

Abstract translation: 提供一种用于保护转换器的装置，以防止转换器的操作区域从零电压切换域移动到零电流切换域。 在用于保护转换器的装置中，感测单元（20）感测转换器（10）的输出电压（VO）和输出电流（IO）。 处理单元（30）处理输出电流和输出电压，并产生处理电压（VT）和处理电流（IT）。 相位比较器（40）将处理电压的相位与处理电流的相位进行比较，输出基准值（Q）。 控制器（50）根据参考值控制转换器的操作。

公开(公告)号：KR101092205B1

公开(公告)日：2011-12-12

申请号：KR1020090114447

申请日：2009-11-25

Applicant: 한국전기연구원

Inventor： 김종현 ,  류명효 ,  하석진 ,  정혜만

IPC: G01R19/30

Abstract: 빠른응답시간으로 AC 피크전압을검출하는교류전압피크치검출장치가개시된다. 교류전압피크치검출장치는전파정류회로, 피크전압검출회로, 버퍼회로및 피크전압추정회로를포함한다. 전파정류회로는외부로부터정방향과부방향의 AC 입력전압을입력받아부방향의순간값까지정방향의전압으로변환하여전파정류전압을출력한다. 피크전압검출회로는전파정류회로로부터출력되는전파정류전압을충/방전하여피크전압을검출한다. 버퍼회로는피크전압검출회로로부터피크전압을버퍼링하여 DC 출력전압을출력한다. 피크전압추정회로는 AC 입력전압의상승또는하강시빠른응답시간으로피크전압을검출하기위해, 전파정류회로에서출력되는전파정류전압과버퍼회로에서출력되는 DC 출력전압을근거로피크전압검출회로에서출력되는피크전압을추정한다. 이에따라, AC 입력전압의상승시뿐만아니라, 감소시에도피크전압을빠른응답시간내에검출할수 있다.

公开(公告)号：KR1020110057857A

公开(公告)日：2011-06-01

申请号：KR1020090114447

申请日：2009-11-25

Applicant: 한국전기연구원

Inventor： 김종현 ,  류명효 ,  하석진 ,  정혜만

IPC: G01R19/30

CPC classification number: G01R19/30 ,  G01R15/04 ,  G01R19/0023 ,  G01R19/0084 ,  G01R19/04

Abstract: PURPOSE: A device for detecting an AC voltage peak value is provided to implement a system with low costs by detecting a peak voltage in the rising and falling of an AC input voltage at fast response time. CONSTITUTION: A full wave rectifier circuit(110) receives an AC input voltage of a positive direction and a negative direction from the outside, converts the instantaneous value of the backward direction into the voltage of a forward direction, and outputs a full-wave rectification voltage. A peak voltage detecting circuit(120) detects the peak voltage by charging or discharging the full-wave voltage from the full-wave rectifier circuit. A buffer circuit(130) buffers the peak voltage from the peak voltage detecting circuit and outputs a DC output voltage. A peak voltage estimating circuit(140) estimates the peak voltage of the peak voltage detecting circuit based on the full-wave rectification voltage of the full-wave rectifier circuit and the DC output voltage of the buffer circuit.

Abstract translation: 目的：提供一种用于检测交流电压峰值的装置，通过在快速响应时间检测交流输入电压的上升和下降中的峰值电压来实现低成本的系统。 构成：全波整流电路（110）从外部接收正方向和负方向的交流输入电压，将逆方向的瞬时值转换成正方向的电压，并输出全波整流 电压。 峰值电压检测电路（120）通过从全波整流电路充放电全波电压来检测峰值电压。 缓冲电路（130）缓冲来自峰值电压检测电路的峰值电压，并输出直流输出电压。 峰值电压估计电路（140）基于全波整流电路的全波整流电压和缓冲电路的直流输出电压来估计峰值电压检测电路的峰值电压。