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    • 1. 发明授权
    • Parallel Operation Apparatus using Magnetic Load Sharing Transformer
    • 使用磁负载共享变压器的并联运行装置
    • KR101198638B1
    • 2012-11-07
    • KR20120061049
    • 2012-06-07
    • H02M7/493
    • H02M7/493H02M2007/4822
    • PURPOSE: A parallel operating device using a magnetic load sharing transformer is provided to maintain parallel operation between inverters when communication data is damaged or a communication line is disconnected due to an external noise. CONSTITUTION: A first power converting device(PC1) receives a voltage from a first DC voltage source(DC1) and converts the received voltage into an AC voltage using an inverter(INV1). A second power converting device(PC2) receives a voltage from a second DC voltage source(DC2) and converts the received voltage into an AC voltage using an inverter(INV2). A magnetic load sharing transformer(100) is installed between the load and the output terminal of the inverters of each power converting device. A secondary winding(120) of the magnetic load sharing transformer is serially connected. An inverter controller(200) controls the inverter of the power converting device. [Reference numerals] (210) Phase synchronizing unit; (230) Output voltage controller; (240) Pulse width modulator; (AA) DC1 (DC voltage source); (BB) Control signal; (CC) High communication cable is not required; (DD) Cable for self-load sharing; (EE) Load; (FF) Output voltage controller; (GG) Pulse width modulator; (HH) Phase synchronization unit; (II) DC1 (DC voltage source)
    • 目的:提供使用磁负载共享变压器的并联运行装置,以便在通信数据损坏或通信线由于外部噪声而断开连接时,保持逆变器之间的并联运行。 构成:第一电力转换装置(PC1)从第一直流电压源(DC1)接收电压,并使用逆变器(INV1)将接收的电压转换为交流电压。 第二电力转换装置(PC2)从第二直流电压源(DC2)接收电压,并使用逆变器(INV2)将接收的电压转换为交流电压。 磁负载共享变压器(100)安装在每个电力转换装置的逆变器的负载和输出端子之间。 磁负载共享变压器的次级绕组(120)串联连接。 逆变器控制器(200)控制电力转换装置的逆变器。 (附图标记)(210)相位同步单元; (230)输出电压控制器; (240)脉宽调制器; (AA)DC1(直流电压源); (BB)控制信号; (CC)不需要高通讯电缆; (DD)用于自负载共享的电缆; (EE)负载; (FF)输出电压控制器; (GG)脉宽调制器; (HH)相位同步单元; (II)DC1(直流电压源)
    • 2. 发明授权
    • 멀티레벨 인버터 제어 시스템 및 그 제어 방법
    • 多电平逆变器控制系统及其控制方法
    • KR101401210B1
    • 2014-05-28
    • KR1020120137544
    • 2012-11-30
    • 주식회사 포스코아이씨티
    • 김상현김광섭권병기
    • H02M7/483
    • H02M7/483H02J3/1842H02M7/49H02M7/493H02M2007/4822
    • A multi-level inverter control system according to one embodiment of the present invention includes: a multi-level inverter which is operated in a first mode to compensate the reactive power of the system or a second mode to early charge an internal capacitor; a system connecting unit which makes the multi-level inverter compensate the reactive power of the system by connecting the multi-level inverter to the system in the first mode; an early charging unit which connects the multi-level inverter to a power supply unit and early charges the capacitor by using a voltage supplied from the power supply unit in the second mode. According to the present invention, damage to the capacitor is prevented by preventing an excessive early charge voltage from being applied to the capacitor included in a cell inverter comprising the multi-level inverter.
    • 根据本发明的一个实施例的多电平逆变器控制系统包括:多电平逆变器,其以第一模式操作以补偿系统的无功功率或第二模式以对内部电容器进行早期充电; 系统连接单元,通过在第一模式下将多电平逆变器连接到系统,使得多电平逆变器补偿系统的无功功率; 早期充电单元,其将多电平逆变器连接到电源单元,并且在第二模式中使用从电源单元提供的电压来对电容器进行早期充电。 根据本发明,通过防止过多的早期充电电压被施加到包括在多电平逆变器的电池逆变器的电容器中的电容器来防止对电容器的损坏。
    • 3. 发明授权
    • 펄스 모듈레이터 구동용 캐패시터 충전 전원 장치
    • 用于驱动脉冲调制器的电容器充电电源装置
    • KR101227732B1
    • 2013-01-29
    • KR1020120014480
    • 2012-02-13
    • (주) 에이치엠티
    • 송의호손윤규이형규
    • H02M7/48H05H9/00
    • H02M7/493H02M2007/4822H05H9/00
    • PURPOSE: A power device charging a capacitor for operating a pulse modulator is provided to accurately and quickly increase output impedance to a desired voltage with a low voltage range. CONSTITUTION: An AC input voltage rectifying unit(30) outputs a DC voltage of a first DC voltage level by rectifying an AC voltage. An inverter unit(32) includes plural inverters for sequentially reducing output power. The inverters convert the DC voltage into the AC voltage of the first DC voltage level. A control unit(34) outputs a control signal for turning off inverters in order of higher voltages by referring a voltage and a current of a high voltage output unit(36). The high voltage output unit converts the AC voltage into a second DC voltage level. [Reference numerals] (30) AC input voltage rectifying unit; (302) First inverter; (304) Second inverter; (306) Third inverter; (308) Fourth inverter; (32) Inverter unit; (34) Control unit; (350) Remote control unit; (352) Front panel; (354) External interlock; (36) High voltage output unit; (AA) AC input; (BB) V.I sensing; (CC) Temperature sensing; (DD) HV(High Voltage) output
    • 目的:为用于操作脉冲调制器的电容器充电的功率器件提供精确和快速地将输出阻抗增加到具有低电压范围的期望电压。 构成:交流输入整流单元(30)通过整流交流电压输出第一直流电压电平的直流电压。 逆变器单元(32)包括用于顺序地降低输出功率的多个反相器。 逆变器将直流电压转换成第一直流电压电平的交流电压。 控制单元(34)通过参考高压输出单元(36)的电压和电流来输出用于通过更高电压的次序关断逆变器的控制信号。 高压输出单元将AC电压转换为第二直流电压电平。 (附图标记)(30)交流输入电压整流单元; (302)第一变频器; (304)第二变频器; (306)第三变频器; (308)第四台变频器; (32)变频器单元; (34)控制单元; (350)遥控器; (352)前面板; (354)外部互锁; (36)高压输出单元; (AA)交流输入; (BB)V.I感应; (CC)温度检测; (DD)HV(高电压)输出
    • 4. 发明公开
    • 병렬스택 구조의 계통연계형 인버터 시스템
    • GRID互动逆变器并联堆叠结构
    • KR20180036019A
    • 2018-04-09
    • KR20160126036
    • 2016-09-30
    • 헵시바주식회사
    • 정현호이명구김광원장성호
    • H02M7/493H02J3/38H02M1/42H02M7/48
    • Y02B70/126H02M7/493H02J3/383H02M1/42H02M2007/4822Y02E10/58
    • 본발명은병렬스택구조의계통연계형인버터시스템에관한것이다. 본발명은마스터스택, 상기마스터스택을구성하는스위칭소자들의스위칭동작을제어하는마스터스택제어기, 상기마스터스택과병렬연결된복수의슬레이브스택, 상기복수의슬레이브스택을구성하는스위칭소자들의스위칭동작을제어하는복수의슬레이브스택제어기를포함하고, 상기마스터스택제어기는, 상기전력계통에발생한불안정상태가상기전력계통을구성하는비선형부하에기인한전압강하로판단되는경우, 상기복수의슬레이브스택의적어도일부에대한역률제어를통하여상기전력계통이안정화되도록제어한다. 본발명에따르면, 비선형부하로인한전력계통불안정상태에서의안정화제어가가능해진다.
    • 并联堆叠结构的并网逆变器系统本发明涉及并联堆叠结构的并网逆变器系统。 本发明控制构成主堆叠,所述主堆叠控制器,并联在主堆与所述多个从堆叠的,耦合到控制构成主堆叠中的开关元件的开关操作所述多个从堆叠的开关元件的开关动作 多个从栈控制器和主栈控制器被配置成所述多个从堆的当由电压降由于非线性负载确定的至少一部分,构成在电力系统中产生的不稳定的虚拟电动势线 并通过功率因数控制来控制电力系统稳定。 根据本发明,有可能给控制eseoui电力系统不稳定稳定由于非线性负载。
    • 5. 发明公开
    • 고전압 대전류 전력 변환 장치
    • 高电压大电流功率转换器
    • KR1020180021275A
    • 2018-03-02
    • KR1020160104800
    • 2016-08-18
    • 한국철도기술연구원
    • 조정민이창영이진호한영재김이현이관섭
    • H02M7/49H02P13/06H02P27/06H02M7/48H02M1/00
    • H02M7/49H02M2001/0067H02M2007/4822H02P13/06H02P27/06
    • 본발명은고전압대전류전력변환장치에관한것이다. 본발명은한 대의인버터와한대의출력변압기를포함하는제1 및제2 모듈러인버터, 제1 모듈러인버터에구비된제1 출력변압기의 2차측 3상부(-) 단자부와제2 모듈러인버터에구비된제2 출력변압기의 2차측 3상정(+) 단자부간의접속을결정하는제5 콘택터및 제2 출력변압기의 2차측 3상부(-) 단자부의공통접속을결정하는제6 콘택터를포함한다. 본발명에따르면, 인버터에구비된전력스위칭디바이스자체의정격전압레벨보다높은출력전압을발생시키기위해서, 여러대의인버터를선형전동기와같은부하로공급하는전류의주파수에따라능동적으로직·병렬회로를구성할수 있도록하는고전압대전류전력변환장치가제공된다.
    • 高电压大电流功率转换装置技术领域本发明涉及高电压大电流功率转换装置。 在端子部的设置和所述第二模块化逆变发明第一mitje第二模块化反相器,第一次级侧3具有模块化逆变器,以一个逆变器和一个的输出变压器的第一输出变压器的上部() 和根据权利要求6的用于确定终端的公共连接的接触器 - 次级侧3假定一个第二输出变压器(+)的第五接触器和所述第三输出变压器的用于确定终端之间的连接的第二次级侧上部()。 根据本发明,为了产生输出电压比本身在逆变器所提供的功率开关器件的额定电压电平高,活性,直接或平行按照一些在提供给负载的电流的频率的逆变器,例如线性马达 提供高压大电流电源转换器。
    • 8. 发明授权
    • 병렬 운전 인버터 시스템의 슬레이브 제어기
    • 用于并联运行逆变器系统的从动控制器
    • KR101361940B1
    • 2014-02-12
    • KR1020130016793
    • 2013-02-18
    • 엘에스산전 주식회사
    • 이경주
    • H02M7/493
    • H02M7/493G05B11/36H02M7/527H02M2007/4822
    • The present invention relates to a slave controller which communicates a master controller and controls an inverter in a parallel operation inverter system. The present invention comprises a first adding unit, a PI control unit, a remitter, and a second adding unit. The first adding unit calculates an error between a phase output current and an average value for each three phase output current. The PI control unit calculates a compensation pulse width for each phase by using the error of each phase calculated in the first adding unit. The remitter limits the pulse width compensated in the PI control unit within a constant range. The second adding unit adds the compensation pulse width of each phase outputted in the remitter to an original pulse width for a corresponding phase. The present invention is provided to equally flow in an output current of an inverter by following an output current average value of each inverter and enable various inverters to distribute same power, thereby optimizing the design of the inverter parallel operation system. [Reference numerals] (21-1,21-2,21-3) First adding unit; (22-1,22-2,22-3) PI control unit; (23-1,23-2,23-3) Remitter; (24-1,24-2,24-3) Second adding unit
    • 本发明涉及一种从属控制器,其通信主控制器并且在并联操作的逆变器系统中控制逆变器。 本发明包括第一添加单元,PI控制单元,汇款单和第二加法单元。 第一加法单元计算每相三相输出电流的相输出电流与平均值之间的误差。 PI控制单元通过使用在第一加法单元中计算出的各相的误差来计算各相的补偿脉冲宽度。 汇款人将PI控制单元中补偿的脉冲宽度限制在一定范围内。 第二加法单元将输出的各相的补偿脉冲宽度与相应相位的原始脉冲宽度相加。 本发明的目的是通过跟随每个逆变器的输出电流平均值同时流过逆变器的输出电流,并使得各种逆变器能够分配相同功率,从而优化逆变器并联运行系统的设计。 [参考号](21-1,21-2,21-3)第一添加单元; (22-1,22-2,22-3)PI控制单元; (23-1,23-2,23-3)Remitter; (24-1,24-2,24-3)第二加料单位
    • 10. 发明公开
    • 인버터 회로
    • 逆变器电路
    • KR1020090010653A
    • 2009-01-30
    • KR1020070073948
    • 2007-07-24
    • 엘지이노텍 주식회사
    • 이용희
    • H02M7/515H02M7/48
    • H02M7/515H02M2007/4822
    • An inverter circuit is provided to remove initialization operation which separately operates a first switching device in order to operate a second switching device by excluding a bootstrap circuit. An inverter circuit comprises a high voltage IC(Integrated Circuit)(210), a first switching device(220), a second switching device(230), and a power supply unit. The high voltage IC generates a first gate control signal according to supply of a first power source(VCC1) and a first control signal(AOUT1), and generates a second gate control signal according to supply of a second power source(VCC2) and a second control signal(BOUT1). The first switching device converts a DC power source into an AC power source through switching operation corresponding to the first gate control signal inputted in a gate terminal. The second switching device converts a DC power source into an AC power source through switching operation corresponding to the second gate control signal inputted in a gate terminal. The power supply unit supplies a first power source and a second power source.
    • 提供逆变器电路以去除分开操作第一开关器件的初始化操作,以通过排除自举电路来操作第二开关器件。 逆变器电路包括高压IC(集成电路)(210),第一开关器件(220),第二开关器件(230)和电源单元。 高电压IC根据第一电源(VCC1)和第一控制信号(AOUT1)的供给产生第一栅极控制信号,并且根据第二电源(VCC2)和第二电源 第二控制信号(BOUT1)。 第一开关装置通过与输入到栅极端子中的第一栅极控制信号对应的开关动作将直流电源转换成交流电源。 第二开关装置通过与在栅极端子中输入的第二栅极控制信号对应的开关动作将直流电源转换为交流电源。 电源单元提供第一电源和第二电源。