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    • 1. 发明申请
    • MEDIUM VOLTAGE VARIABLE FREQUENCY DRIVING SYSTEM
    • 中等电压可变频率驱动系统
    • US20130063070A1
    • 2013-03-14
    • US13293757
    • 2011-11-10
    • Yi ZhangWei ChenBo-Yu Pu
    • Yi ZhangWei ChenBo-Yu Pu
    • H02P27/04H02P27/08H02P23/00
    • H02P27/14H02M5/4585H02M7/487
    • The present invention provides a medium voltage variable frequency driving system, including a three-phase switch-mode rectification module, a multilevel inverter and a high-capacity capacitor module. The three-phase switch-mode rectification module is coupled with a three-phase electrical grid, for converting an AC voltage input with a fixed operating frequency on the three-phase electrical grid into a DC voltage. The multilevel inverter is used for converting the DC voltage into an AC voltage with a required variable frequency, so as to drive an induction motor. The high-capacity capacitor module is coupled between the three-phase switch-mode rectification module and the multilevel inverter, for temporarily storing the DC voltage. In the present invention, a three-phase switch-mode rectification technology is used at the front-end rectifier, and a diode-clamped three-level inverter is adapted correspondingly at the rear-end inverter.
    • 本发明提供一种中压变频驱动系统,包括三相开关模式整流模块,多电平逆变器和大容量电容模块。 三相开关模式整流模块与三相电网耦合,用于将三相电网上固定工作频率的交流电压输入转换成直流电压。 多电平逆变器用于将直流电压转换成具有所需可变频率的交流电压,以驱动感应电动机。 高容量电容器模块耦合在三相开关模式整流模块和多电平逆变器之间,用于暂时存储直流电压。 在本发明中,前端整流器采用三相开关模式整流技术,二相钳位三电平逆变器适用于后端逆变器。
    • 2. 发明授权
    • Medium voltage variable frequency driving system
    • 中压变频驱动系统
    • US08811048B2
    • 2014-08-19
    • US13293757
    • 2011-11-10
    • Yi ZhangWei ChenBo-Yu Pu
    • Yi ZhangWei ChenBo-Yu Pu
    • H02P27/14H02P23/04
    • H02P27/14H02M5/4585H02M7/487
    • The present invention provides a medium voltage variable frequency driving system, including a three-phase switch-mode rectification module, a multilevel inverter and a high-capacity capacitor module. The three-phase switch-mode rectification module is coupled with a three-phase electrical grid, for converting an AC voltage input with a fixed operating frequency on the three-phase electrical grid into a DC voltage. The multilevel inverter is used for converting the DC voltage into an AC voltage with a required variable frequency, so as to drive an induction motor. The high-capacity capacitor module is coupled between the three-phase switch-mode rectification module and the multilevel inverter, for temporarily storing the DC voltage. In the present invention, a three-phase switch-mode rectification technology is used at the front-end rectifier, and a diode-clamped three-level inverter is adapted correspondingly at the rear-end inverter.
    • 本发明提供一种中压变频驱动系统,包括三相开关模式整流模块,多电平逆变器和大容量电容模块。 三相开关模式整流模块与三相电网耦合,用于将三相电网上固定工作频率的交流电压输入转换成直流电压。 多电平逆变器用于将直流电压转换成具有所需可变频率的交流电压,以驱动感应电动机。 高容量电容器模块耦合在三相开关模式整流模块和多电平逆变器之间,用于暂时存储直流电压。 在本发明中,前端整流器采用三相开关模式整流技术,二相钳位三电平逆变器适用于后端逆变器。
    • 5. 发明申请
    • THREE-PHASE RECTIFICATION MODULE, THE SYSTEM THEREOF AND HARMONIC SUPPRESSION METHOD
    • 三相整流模块及其系统及谐波抑制方法
    • US20130083571A1
    • 2013-04-04
    • US13466739
    • 2012-05-08
    • Boyu PuJinping ZhouYi ZhangWei Chen
    • Boyu PuJinping ZhouYi ZhangWei Chen
    • H02M1/12
    • H02M1/126H02M7/487H02M2007/2195H02P27/06Y02B70/1408Y02P80/112
    • A three-phase rectification module, the system thereof and harmonic suppression method are provided. The module includes a LCL filter unit, a three-phase uni-directional rectification unit coupled to the LCL filter unit, and a rectifier control unit for controlling power factor of three-phase AC power source and DC output voltage of the three-phase uni-directional rectification unit. A commutation diode is serially connected on the bridge-arm of each set of uni-directional rectification branch which is included in the three-phase uni-directional rectification unit, making it function as current uni-direction. Herein, the power factor of the three-phase AC power source is matched with the parameters of the LCL filter unit, such that the absolute value of the phase difference between AC input voltage and current of the three-phase uni-directional rectification unit is close or equal to a preset threshold.
    • 提供三相整流模块,其系统和谐波抑制方法。 该模块包括LCL滤波器单元,耦合到LCL滤波器单元的三相单向整流单元,以及用于控制三相交流电源的功率因数和三相单相直流输出电压的整流器控制单元 双向整流单元。 整流二极管串联连接在三相单向整流单元中的每组单向整流分支的桥臂上,使其作为当前的单向功能。 这里,三相交流电源的功率因数与LCL滤波器单元的参数相匹配,使得三相单向整流单元的交流输入电压与电流之间的相位差的绝对值为 接近或等于预设阈值。