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    LCL filter resonance mitigation technique for voltage source converters
    1.
    发明授权
    LCL filter resonance mitigation technique for voltage source converters 有权

    公开(公告)号：US09819255B2

    公开(公告)日：2017-11-14

    申请号：US14566752

    申请日：2014-12-11

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Yogesh P. Patel ,  Lixiang Wei

    IPC: H02M1/12 ,  H02M7/04

    CPC classification number: H02M1/126 ,  H02M1/12 ,  H02M7/04

    Abstract: Control apparatus, techniques and computer readable mediums are presented to mitigate LCL filter resonance issue for voltage source converters. Two level voltage source converter with and without passive damping of LCL filter are selected for the comparative study. Control algorithms are presented to estimate the source impedance based on variable carrier PWM. Estimated source impedance is used to tune the control of the VSC to avoid the resonance of LCL filter has been presented. In situations in which LCL resonance cannot be avoided by tuning the control parameters, energy efficient techniques are disclosed to provide selective passive damping to facilitate continued power conversion system operation without significant adverse impact on system performance.

    LCL FILTER RESONANCE MITIGATION TECHNIQUE FOR VOLTAGE SOURCE CONVERTERS
    2.
    发明申请
    LCL FILTER RESONANCE MITIGATION TECHNIQUE FOR VOLTAGE SOURCE CONVERTERS 有权
    用于电压源转换器的LCL滤波器谐振抑制技术

    公开(公告)号：US20160013715A1

    公开(公告)日：2016-01-14

    申请号：US14566752

    申请日：2014-12-11

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Yogesh P. Patel ,  Lixiang Wei

    IPC: H02M1/12 ,  H02M7/04

    CPC classification number: H02M1/126 ,  H02M1/12 ,  H02M7/04

    Abstract: Control apparatus, techniques and computer readable mediums are presented to mitigate LCL filter resonance issue for voltage source converters. Two level voltage source converter with and without passive damping of LCL filter are selected for the comparative study. Control algorithms are presented to estimate the source impedance based on variable carrier PWM. Estimated source impedance is used to tune the control of the VSC to avoid the resonance of LCL filter has been presented. In situations in which LCL resonance cannot be avoided by tuning the control parameters, energy efficient techniques are disclosed to provide selective passive damping to facilitate continued power conversion system operation without significant adverse impact on system performance.

    Abstract translation: 提出了控制装置，技术和计算机可读介质以减轻电压源转换器的LCL滤波器共振问题。 选择具有和不具有LCL滤波器的无源阻尼的两级电压源转换器进行比较研究。 提出了控制算法来估计基于可变载波PWM的源阻抗。 估计源阻抗用于调节VSC的控制，以避免LCL滤波器的共振已经呈现。 在通过调节控制参数不能避免LCL共振的情况下，公开了能量效率技术来提供选择性的被动阻尼以便于连续的功率转换系统运行，而不会对系统性能造成显着的不利影响。

    MOTOR DRIVE WITH LCL FILTER INDUCTOR WITH BUILT-IN PASSIVE DAMPING RESISTOR FOR AFE RECTIFIER
    4.
    发明申请
    MOTOR DRIVE WITH LCL FILTER INDUCTOR WITH BUILT-IN PASSIVE DAMPING RESISTOR FOR AFE RECTIFIER 有权
    带有LCL滤波电感的电机驱动器，用于AFE整流器的内置无源阻尼电阻

    公开(公告)号：US20160248334A1

    公开(公告)日：2016-08-25

    申请号：US14630866

    申请日：2015-02-25

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Yogesh P. Patel ,  Lixiang Wei

    IPC: H02M5/458 ,  H03H7/01 ,  H03H7/06

    CPC classification number: H02M1/126 ,  H02M5/4585 ,  H03H7/06 ,  H03H7/1741

    Abstract: Power conversion systems, filter circuits and integrated filter resistor and inductor apparatus are presented, in which a damping resistor is integrated with a filter inductor by winding joined resistor winding portions proximate to one another at least partially around a filter inductor core leg to form an integrated filter resistor and inductor apparatus for interconnection with filter capacitors to provide an input filter or an output filter for a motor drive or other power conversion system.

    Abstract translation: 提供了功率转换系统，滤波器电路和集成的滤波电阻器和电感器装置，其中阻尼电阻器与滤波器电感器集成，通过将接合的电阻器绕组部分至少部分地围绕滤波器电感器芯腿彼此缠绕以形成集成 用于与滤波电容器互连的滤波电阻器和电感器装置，以提供用于电机驱动器或其它功率转换系统的输入滤波器或输出滤波器。

    PRECHARGING APPARATUS AND POWER CONVERTER
    6.
    发明申请
    PRECHARGING APPARATUS AND POWER CONVERTER 有权
    预置装置和功率转换器

    公开(公告)号：US20160204709A1

    公开(公告)日：2016-07-14

    申请号：US14596351

    申请日：2015-01-14

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Yogesh P. Patel ,  Rangarajan Tallam ,  Brian P. Brown ,  Jiangang Hu ,  James J. Campbell

    IPC: H02M5/44

    CPC classification number: H02M5/44 ,  H02H9/001 ,  H02H9/002 ,  H02M7/125 ,  H02M2001/123

    Abstract: Precharging systems and methods are presented for precharging a DC bus circuit in a power conversion system, in which precharging current is connected through a precharging resistance coupled between only a single AC input line and the DC bus circuit when the DC bus voltage is less than a non-zero threshold, and a controller individually activates controllable rectifier switching devices when the DC bus voltages greater than or equal to the threshold using DC gating or pulse width modulation to selectively provide a bypass path around the precharging resistance for normal load currents in the power conversion system.

    Abstract translation: 提出了预充电系统和方法，用于对电力转换系统中的直流总线电路进行预充电，其中当直流母线电压小于一个时，预充电电流通过仅在单个AC输入线和直流总线电路之间耦合的预充电电阻来连接 非零阈值，并且当DC总线电压大于或等于阈值时，控制器单独激活可控整流器开关器件，使用DC门控或脉冲宽度调制，以选择性地为电源中的正常负载电流提供围绕预充电电阻的旁路 转换系统

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