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    • 2. 发明申请
    • ACTIVE BOOST POWER CONVERTER FOR SINGLE-PHASE SRM
    • 用于单相SRM的主动升压电源转换器
    • US20110069515A1
    • 2011-03-24
    • US12883598
    • 2010-09-16
    • Jianing LIANGJin Woo AHNDong Hee LEE
    • Jianing LIANGJin Woo AHNDong Hee LEE
    • H02M7/06
    • H02M1/4208Y02B70/126
    • Disclosed is an active boost power converter for driving a single-phase SRM, capable of rapidly establishing excitation current in the excitation mode and reducing tail current and negative torque in the demagnetization mode under the high-speed operation of the SRM. The active boost power converter includes a boost module and a converter module connected to the boost module. The boost module includes first and second capacitors, first and second diodes and a switch device turned on/off to connect the first and second capacitors to each other in series or parallel. The switch device includes an insulated gate bipolar transistor (IGBT). The power converter is operated with first and second input modes and first and second output modes. Voltage of the first capacitor is equal to dc-link voltage and first and second capacitors are controlled to be operated in series or parallel by simply controlling the IGBT.
    • 公开了一种用于驱动单相SRM的有源升压功率转换器,其能够在SRM的高速运行下在激励模式下快速建立励磁电流并减少退磁模式中的尾电流和负转矩。 主动升压功率转换器包括升压模块和连接到升压模块的转换器模块。 升压模块包括第一和第二电容器,第一和第二二极管以及开/关以将第一和第二电容器串联或并联连接的开关装置。 开关器件包括绝缘栅双极晶体管(IGBT)。 电源转换器使用第一和第二输入模式以及第一和第二输出模式进行操作。 第一电容器的电压等于直流链路电压,并且通过简单地控制IGBT来控制第一和第二电容器串联或并联操作。
    • 3. 发明申请
    • METHOD FOR SUPPRESSING SPEED RIPPLE BY USING TORQUE COMPENSATOR BASED ON ACTIVATION FUNCTION
    • 基于激活功能使用扭矩补偿器抑制速度纹波的方法
    • US20130113408A1
    • 2013-05-09
    • US13315245
    • 2011-12-08
    • Dong Hee LEEJin Woo AHN
    • Dong Hee LEEJin Woo AHN
    • H02P29/00
    • H02P21/05H02P21/18H02P21/20Y10T477/32
    • Disclosed is a method for suppressing a speed ripple occurring during an operation of an AC motor by using a torque compensator based on an activation function. The method includes the steps of calculating a speed error ωerr based on a reference speed ωref and an actual speed ωact; calculating a controller output Trm by using the speed error ωerr as an input of a PI control and an operation of a compensated torque Tcom; and determining a torque variation based on the controller output Trm and a reference torque Tref and operating the torque variation in relation to an anti-windup gain Ka to use torque variation as an input of an integral (I) control. The method suppresses the speed ripple by compensating for the torque ripple through a controller which calculates the compensated torque by taking the signs of the speed error and the differential speed error into consideration.
    • 公开了一种通过使用基于激活功能的转矩补偿器来抑制在AC电动机的操作期间发生的速度波动的方法。 该方法包括基于参考速度ωgaref和实际速度ω运算来计算速度误差ωgaerr的步骤; 通过使用速度误差ωga作为PI控制的输入和补偿转矩Tcom的运算来计算控制器输出Trm; 以及基于控制器输出Trm和参考转矩Tref来确定扭矩变化,并且相对于防震增益Ka操作扭矩变化,以使用转矩变化作为积分(I)控制的输入。 该方法通过补偿通过考虑速度误差和差速误差的符号来计算补偿转矩的控制器来补偿转矩波动来抑制速度波动。
    • 4. 发明申请
    • DEAD-TIME COMPENSATION ALGORITHM FOR 3-PHASE INVERTER USING SVPWM
    • 使用SVPWM的三相逆变器的死时补偿算法
    • US20130088905A1
    • 2013-04-11
    • US13295146
    • 2011-11-14
    • Dong Hee LEEHong Min KIM
    • Dong Hee LEEHong Min KIM
    • H02M7/537
    • H02M7/53875H02M2001/385H02M2007/53876
    • Disclosed is a dead-time compensation method of a 3-phase inverter using an SVPWM scheme. The dead-time compensation method includes generating a switching signal having dead-time with respect to the power semiconductor switches of the upper and lower arms in order to obtain a predetermined output through the SVPWM scheme, detecting medium phase current from each phase current output through the switching signal, determining polarity of the medium phase current, and generating a switching signal by calculating switching time in order to compensate for time to apply effective voltage according to the polarity of the medium phase current. Through the dead-time compensation method, the distortion of the output voltage and the reduction of voltage having a fundamental wave in the output voltage, which are caused by the dead-time, are minimized through the switching of compensating for the time to apply effective voltage based on the polarity of the load current.
    • 公开了使用SVPWM方案的三相逆变器的死区补偿方法。 死区补偿方法包括产生相对于上臂和下臂的功率半导体开关具有死区时间的切换信号,以便通过SVPWM方案获得预定的输出,从每个相电流输出通过 切换信号,确定中间相电流的极性,并通过计算开关时间来产生开关信号,以便根据中间相电流的极性补偿施加有效电压的时间。 通过死区补偿方法,由死区时间引起的输出电压的失真和输出电压中具有基波的电压的降低通过切换补偿施加时间来最小化 基于负载电流的极性的电压。