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公开(公告)号：KR1020160052846A
公开(公告)日：2016-05-13
申请号：KR1020140147852
申请日：2014-10-29
Applicant: 한국전기연구원
IPC: H02N2/06
Abstract: 압전소자에소정주파수의교류전압을인가하여압전소자에교류전류가흐르게하는컨버터; 교류전류에대응하는전압의크기와, 기설정된제 1 전압의크기사이의비교결과를나타내는출력신호를출력하는제 1 비교부; 및출력신호에기초하여, 교류전압의주파수를변경하는제어부를포함하는것을특징으로하는본 발명의일 실시예에따른초음파트랜스듀서구동장치가개시된다.
Abstract translation: 根据本发明的实施例，公开了一种有效跟踪压电元件的谐振频率的超声换能器。 超声波换能器包括：转换器，用于将预定频率的交流电压施加到压电元件，并允许交流电流流过压电元件; 第一比较单元，用于输出表示对应于交流电压的电平与预置的第一电压的电平之间的比较结果的输出信号; 以及用于基于输出信号改变交流电压的频率的控制单元。
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公开(公告)号：KR1020160052845A
公开(公告)日：2016-05-13
申请号：KR1020140147851
申请日：2014-10-29
Applicant: 한국전기연구원
IPC: H02N2/06
Abstract: 압전소자에교류전압을인가하여압전소자에교류전류가흐르게하는컨버터; 교류전압의위상과교류전류의위상의선후를나타내는출력신호를출력하는위상비교부; 및위상비교부로부터출력되는출력신호에기초하여, 교류전압의주파수를변경하는제어부를포함하는것을특징으로하는본 발명의일 실시예에따른초음파트랜스듀서구동장치가개시된다.
Abstract translation: 根据本发明的实施例，公开了一种用于操作有效跟踪压电元件的谐振频率的超声换能器的方法。 超声波换能器包括：向压电元件施加交流电压并允许交流电流流过压电元件的转换器; 相位比较单元，用于输出表示交流电压的相位和交流电的相位顺序的输出信号; 以及控制单元，用于根据由相位比较单元输出的输出信号来改变交流电压的频率。
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公开(公告)号：KR101520257B1
公开(公告)日：2015-06-05
申请号：KR1020130129090
申请日：2013-10-29
Applicant: 한국전기연구원
Abstract: 벅(buck) 모드또는부스트(boost) 모드로동작가능한양방향 DC-DC 컨버터에있어서, 제 1 전원에직렬로연결되어스위칭신호에따른온 및오프동작을통해제 1 전원으로부터인가되는제 1 전압을스위칭하는제 1 스위칭부; 제 1 차측 권선으로인가된스위칭된제 1 전압을변압하는변압기; 제 2 전원에직렬로연결되어스위칭신호에따른온 및오프동작을통해제 2 전원으로부터인가되는제 2 전압을스위칭하는제 2 스위칭부; 변압기의제 2 차측 권선과제 2 스위칭부사이에직렬로연결되어변압된제 1 전압과스위칭된 2 전압사이의차 전압을인가받는인덕터; 및벅 모드에의해가변되는제 2 전압을측정하고, 측정된제 2 전압에기초하여, 스위칭신호의스위칭주파수를변경하는제어부를포함하는것을특징으로하는본 발명의일 실시예에따른양방향 DC-DC 컨버터가개시된다.
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公开(公告)号：KR1020150049061A
公开(公告)日：2015-05-08
申请号：KR1020130129091
申请日：2013-10-29
Applicant: 한국전기연구원
Abstract: 제 1 전원에직렬로연결되어제 1 스위칭신호에따른온 및오프동작을통해제 1 전원으로부터인가되는제 1 전압을스위칭하는제 1 스위칭부; 탭(tap)을갖는제 1 차측 권선과제 2 차측 권선을포함하고, 제 1 차측 권선으로인가된스위칭된제 1 전압을변압하는변압기; 제 2 전원에직렬로연결되어제 2 스위칭신호에따른온 및오프동작을통해제 2 전원으로부터인가되는제 2 전압을스위칭하는제 2 스위칭부; 제 2 차측 권선과제 2 스위칭부사이에직렬로연결되어변압된제 1 전압과스위칭된 2 전압사이의차 전압을인가받는인덕터; 및벅 모드또는부스트모드하에서가변되는제 2 전압을측정하고, 측정된제 2 전압에기초하여, 스위칭된제 1 전압이제 1 차측 권선의제 1 단부와제 2 단부사이에인가되거나, 탭과제 1 단부사이에인가되도록하는제 1 스위칭신호를제 1 스위칭부로전송하는제어부를포함하는본 발명의일 실시예에따른양방향 DC-DC 컨버터가개시된다.
Abstract translation: 在本发明的实施例中示出了双向DC-DC转换器。 本发明包括：第一开关部分，通过连接到第一电源来切换从第一电源施加的通过开/关动作的第一电压，其对应于第一开关信号; 转换器，包括具有抽头和第二线圈的第一线圈，以及转换施加到第一线圈的开关的第一电压; 第二开关部分通过与第二电源串联连接而对应于第二开关信号的开/关动作来切换从第二电源施加的第二电压; 连接到第二线圈和第二开关部分的电感器，并且接收转换的第一电压和开关的第二电压之间的电压差; 以及控制部，其在降压模式或升压模式下测量所述第二电压变量，并且传送所述第一开关信号以施加所述第一线圈或所述抽头的第一端和第二端之间施加的所述切换的第一电压，以及 基于测量的第二电压的第一端到第一开关部分。
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公开(公告)号：KR101387682B1
公开(公告)日：2014-04-22
申请号：KR1020120115560
申请日：2012-10-17
Applicant: 한국전기연구원
Abstract: The present invention relates to a power supply converter considering transient protection and redundancy and an operation method thereof. The power supply converter includes multiple capacitors which are connected to an input power source in series; and each DC/DC converter having two input terminals of which are connected to the capacitors and which generates output voltage by connecting each output. To operate the power supply converter, the operation method comprises a step of connecting each resistor and each switch connected in series to the capacitors in parallel; a step of outputting auxiliary voltage to determine whether each DC/DC converter is normal or transient; and a step of controlling the on or off of the corresponding switch connected to each DC/DC converter by a control circuit according to the size of the auxiliary voltage.
Abstract translation: 本发明涉及考虑瞬态保护和冗余的电源转换器及其操作方法。 电源转换器包括串联连接至输入电源的多个电容器; 并且每个DC / DC转换器具有两个输入端连接到电容器，并且通过连接每个输出来产生输出电压。 为了操作电源转换器，操作方法包括将每个电阻器和每个串联连接的开关并联连接到电容器的步骤; 输出辅助电压以确定每个DC / DC转换器是正常还是暂态的步骤; 以及通过控制电路根据辅助电压的大小来控制连接到每个DC / DC转换器的对应开关的导通或关断的步骤。
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Patent Agency Ranking
公开(公告)号：KR101245520B1
公开(公告)日：2013-03-21
申请号：KR1020110074506
申请日：2011-07-27
Applicant: 한국전기연구원
IPC: H02M3/28
Abstract: 본 발명은 직류응용분야에서 전력의 흐름이 양방향으로 전달 가능하면서, 정방향과 역방향 모두 동일한 구성을 가져서 설계가 단순화되고, 방향에 관계없이 소프트 스위칭이 가능하여 손실이 작고 고효율로 전력변환장치를 동작시킬 수 있으며, 양방향에서의 전력회로 동작이 같으므로 정방향, 역방향에 대해 동일하게 제어 동작도 가능하게 할 수 있는 대칭형 양방향 공진형 컨버터에 관한 것이다.
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公开(公告)号：KR1020120050264A
公开(公告)日：2012-05-18
申请号：KR1020100111687
申请日：2010-11-10
Applicant: 한국전기연구원
CPC classification number: H02M1/4225 , H02M2001/346 , Y02B70/126 , Y02B70/1491 , Y02P80/112 , H02M1/083 , H02M1/14
Abstract: PURPOSE: A zero voltage and zero current switching continuous current mode power factor correction circuit is provided to minimize loss of a circuit by reducing loss due to a reverse recovery current of a diode connected to the load side through an inductor auxiliary wire. CONSTITUTION: A coupling inductor(110) comprises a first wire(L1), a second wire(L2), and a third wire(L3). The first wire and the second wire are wound in a same direction. The third wire is wound in a different direction with the first wire and the second wire. A switch(S) is connected between an external terminal of the third wire and a negative terminal. An output diode(Df) is connected to an external terminal of the second wire. An auxiliary circuit(130) supports current reset according to operation of the switch. A snubber circuit(120) is connected between both terminals of the switch. The snubber circuit is composed of woe diodes and a capacitor.
Abstract translation: 目的：提供零电压和零电流开关连续电流模式功率因数校正电路，以通过减少由于通过电感器辅助线连接到负载侧的二极管的反向恢复电流引起的损耗来最小化电路损耗。 构成：耦合电感器（110）包括第一线（L1），第二线（L2）和第三线（L3）。 第一线和第二线沿同一方向缠绕。 第三根线与第一线和第二线以不同的方向缠绕。 开关（S）连接在第三线的外部端子和负极端子之间。 输出二极管（Df）连接到第二导线的外部端子。 辅助电路（130）根据开关的动作支持电流复位。 缓冲电路（120）连接在开关的两个端子之间。 缓冲电路由二极管和电容器构成。
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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
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.
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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
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。
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公开(公告)号：KR1020100118242A
公开(公告)日：2010-11-05
申请号：KR1020090036970
申请日：2009-04-28
Applicant: 한국전기연구원
CPC classification number: H02J9/061 , H02J3/1814 , H02M2001/0093 , Y02E40/18
Abstract: PURPOSE: A serial compensation rectifier and a serial compensation uninterruptible power supply device thereof are provided to control the power factor and power of an input voltage by using a compensation transformer and a serial compensation converter. CONSTITUTION: A one end of the primary side coil of a transformer(110a) for compensation is serially connected to a single phase or a poly phase AC power source. A rectifier(150a) is connected to the different end of the primary side coil of the transformer for compensation. A serial compensation inverter part(200a) is connected to the secondary side coil of the transformer for compensation. The serial compensation inverter part comprises an input filter inductor and a serial compensation PWM(Pulse Width Modulation) converter. A DC capacitor(270a) is connected to the output terminal of the serial compensation inverter part. The output terminal of the DC capacitor is connected to the output terminal of the rectifier.
Abstract translation: 目的：提供串行补偿整流器及其串联补偿不间断电源装置，通过使用补偿变压器和串联补偿转换器来控制输入电压的功率因数和功率。 构成：用于补偿的变压器（110a）的初级侧线圈的一端串联连接到单相或多相AC电源。 整流器（150a）连接到变压器的初级侧线圈的不同端，用于补偿。 串联补偿逆变器部件（200a）连接到变压器的次级侧线圈用于补偿。 串行补偿逆变器部分包括输入滤波电感和串行补偿PWM（脉宽调制）转换器。 直流电容器（270a）连接到串行补偿逆变器部分的输出端子。 直流电容器的输出端子连接到整流器的输出端子。
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