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    • 1. 发明申请
    • UNBALANCED VOLTAGE COMPENSATION METHOD, UNBALANCED VOLTAGE COMPENSATOR, THREE-PHASE CONVERTER CONTROL METHOD, AND CONTROLLER OF THREE-PHASE CONVERTER
    • 不平衡电压补偿方法,不平衡电压补偿器,三相转换器控制方法和三相转换器的控制器
    • US20110134669A1
    • 2011-06-09
    • US12958523
    • 2010-12-02
    • Itsuo YuzuriharaAtsushi TakayanagiYoshihisa Hata
    • Itsuo YuzuriharaAtsushi TakayanagiYoshihisa Hata
    • H02M7/04
    • H02M7/219H02M2001/0022
    • In compensating for unbalanced voltages of three-phase AC, instantaneous values of wye-phase voltages 120° out of phase with each other are obtained from line voltages using a centroid vector operation, symmetrical component voltages of three-phase balanced system are obtained from the instantaneous values of wye-phase voltages, a compensation signal to compensate unbalanced voltages of three-phase AC is generated from zero-phase-sequence voltage of symmetrical component voltages is generated, wye-phase voltages 120° out of phase, the unbalanced voltages of which are compensated, are obtained from the compensation signal and the symmetrical component voltages, a control signal of a PWM conversion is generated based on the compensated wye-phase voltage compensated, and the unbalanced voltages of three-phase AC are compensated. The amount of time to compensate the three-phase unbalanced voltages required for detecting an unbalance of voltages and generating a control signal can be shortened.
    • 在补偿三相交流的不平衡电压时,使用质心向量运算从线电压获得相位相差120°的相位电压的瞬时值,三相平衡系统的对称分量电压从 产生相位电压的瞬时值,补偿信号补偿三相交流电压的不平衡电压,产生零相电压的对称分量电压,相位相位电压为120°相位,不平衡电压 由补偿信号和对称分量电压获得补偿后的PWM转换的控制信号,并根据经补偿的相位补偿的相位电压产生PWM转换的控制信号,并补偿三相AC的不平衡电压。 可以缩短补偿检测电压不平衡和产生控制信号所需的三相不平衡电压的时间量。
    • 2. 发明授权
    • Instantaneous voltage-drop compensation circuit, power conversion apparatus, instantaneous voltage-drop compensation method and computer readable medium storing instantaneous voltage-drop compensation program
    • 瞬时压降补偿电路,功率转换装置,瞬时压降补偿方法和存储瞬时电压降补偿程序的计算机可读介质
    • US07751211B2
    • 2010-07-06
    • US11717137
    • 2007-03-13
    • Itsuo YuzuriharaAtsushi TakayanagiRyuichi Takamura
    • Itsuo YuzuriharaAtsushi TakayanagiRyuichi Takamura
    • H02M7/217
    • H02M7/125
    • An instantaneous voltage-drop compensation circuit including: a first voltage detector detecting three-phase voltages to be input to a power converter converting three-phase AC to DC based on control pulse signals, and outputting three-phase voltage signals; a first three-phase to two-phase converter converting the detected signals to two-phase voltage signals; a first current detector detecting three-phase currents to be input to the power converter and outputting three-phase current signals; a second three-phase to two-phase converter converting the detected current signals to two-phase current signals; a first subtracter generating a first deviation signal from input current command signals and the two-phase current signals; an input current controller generating input current control signals based on the first deviation signal; and a first adder adding the two-phase voltage signals to the input current control signals, to generate control pulse signals for the power converter.
    • 一种瞬时电压补偿电路,包括:第一电压检测器,检测要输入到基于控制脉冲信号将三相AC转换为DC的功率转换器的三相电压,并输出三相电压信号; 将检测到的信号转换成两相电压信号的第一三相到两相转换器; 检测要输入到功率转换器并输出三相电流信号的三相电流的第一电流检测器; 将检测到的电流信号转换成二相电流信号的第二三相到两相转换器; 从输入电流指令信号和两相电流信号产生第一偏差信号的第一减法器; 输入电流控制器,基于所述第一偏差信号产生输入电流控制信号; 以及将两相电压信号与输入电流控制信号相加的第一加法器,以产生功率转换器的控制脉冲信号。
    • 4. 发明授权
    • Input drive apparatus for power transistor
    • 功率晶体管输入驱动装置
    • US4605865A
    • 1986-08-12
    • US624633
    • 1984-06-26
    • Itsuo Yuzurihara
    • Itsuo Yuzurihara
    • H03K17/04H02M3/335H03K17/0412H03K17/60H03K17/61H03K3/26
    • H03K17/601H03K17/04126
    • An input drive apparatus of a power transistor is constituted by a transformer having a core with an air gap, a primary winding energized from an input source in accordance with a forward input bias instruction, and a secondary winding, a first transistor electrically insulated from the input source and turned ON by the voltage of the secondary winding for supplying a forward input bias to the power transistor, and a second transistor electrically insulated from the input source and turned ON in accordance with a reverse input bias instruction for supplying electromagnetic energy stored in the transformer to the input electrode of the power transistor to act as a reverse bias current in accordance with a reverse bias instruction. These is also provided diode means for returning to the input source the electromagnetic energy stored after charge carriers accumulated in the power transistor have been extinguished, and the electromagnetic energy stored in the transformer when a forward bias instruction is applied.
    • 功率晶体管的输入驱动装置由具有气隙的磁芯的变压器,根据正向输入偏置指令从输入源通电的初级绕组和次级绕组构成,第一晶体管与 输入源并通过用于向功率晶体管提供正向输入偏置的次级绕组的电压接通,以及与输入源电绝缘的第二晶体管,并根据用于提供存储在电源中的电磁能的反向输入偏置指令而导通 变压器到功率晶体管的输入电极根据反向偏置指令充当反向偏置电流。 这些还提供二极管装置,用于在积累在功率晶体管中的电荷载流子已经熄灭之后返回到输入源,存储的电磁能量以及当施加正向偏压指令时存储在变压器中的电磁能量。
    • 5. 发明申请
    • SINGLE-PHASE INVERTER
    • 单相逆变器
    • US20160308457A1
    • 2016-10-20
    • US14781166
    • 2013-12-26
    • Itsuo YUZURIHARAShinichi KODAMAToshiyuki ADACHI
    • Itsuo YUZURIHARAShinichi KODAMAToshiyuki ADACHI
    • H02M7/04H02M1/34
    • H02M7/04H02M1/34H02M7/48H02M7/5387H02M2007/4815Y02B70/1441
    • In an inverter circuit, more particularly in a single-phase inverter, soft switching is performed with a simple configuration to prevent switching loss of a switching element. A resonance circuit is configured by a resonant capacitor provided on the power supply side of a bridge circuit constituting a single phase inverter, a resonant inductor provided on the output side of the bridge circuit, and the bridge circuit. A resonance current passing through the resonance circuit allows zero voltage switching (ZVS) and zero current switching (ZCS) to be implemented at the rising time of main switching elements constituting the bridge circuit, and the zero voltage switching is implemented by means of zero voltage of the resonant capacitor at the falling time of the main switching elements constituting the bridge circuit.
    • 在逆变器电路中,更具体地,在单相逆变器中,以简单的结构进行软开关,以防止开关元件的开关损耗。 谐振电路由构成单相逆变器的桥式电路的电源侧的谐振电容器,设置在桥式电路的输出侧的谐振电感器和桥式电路构成。 通过谐振电路的谐振电流允许在构成桥式电路的主开关元件的上升时间实现零电压切换(ZVS)和零电流切换(ZCS),零电压切换通过零电压 的谐振电容器在构成桥式电路的主开关元件的下降时间。