Integrated DC link choke and method for suppressing common-mode voltage in a motor drive
    93.
    发明授权
    Integrated DC link choke and method for suppressing common-mode voltage in a motor drive 有权
    集成式直流母线扼流圈及抑制电动机驱动中共模电压的方法

    公开(公告)号:US06867564B1

    公开(公告)日:2005-03-15

    申请号:US10463986

    申请日:2003-06-18

    摘要: A motor drive and a choke therefor are disclosed, wherein the choke comprises a magnetic core with an inner leg and two outer legs, and four coils, which may be connected in DC current paths in the motor drive. First and second differential coils are wound around first and second outer legs, respectively; and first and second common-mode coils are wound around the inner leg of the choke. The first and second differential coils smooth the DC current on a DC bus in the motor drive, and the first and second common-mode coils suppress common-mode voltages in the motor drive. Also disclosed is a method for suppressing common-mode voltages in a motor drive.

    摘要翻译: 公开了一种电动机驱动器和扼流器,其中扼流器包括具有内腿和两个外腿的磁芯,以及四个线圈,其可以连接在电动机驱动器中的直流电流路径中。 第一和第二差动线圈分别缠绕在第一和第二外腿上; 并且第一和第二共模线圈缠绕在扼流圈的内腿上。 第一和第二差分线圈平滑电动机驱动器中的直流母线上的直流电流,并且第一和第二共模线圈抑制电动机驱动中的共模电压。 还公开了一种用于抑制电动机驱动中的共模电压的方法。

    High-speed bit-pattern detector
    94.
    发明授权
    High-speed bit-pattern detector 失效
    高速位图检测器

    公开(公告)号:US06792061B1

    公开(公告)日:2004-09-14

    申请号:US09643180

    申请日:2000-08-21

    申请人: Yue-Hong Sutu Bin Wu

    发明人: Yue-Hong Sutu Bin Wu

    IPC分类号: H04L700

    摘要: A detector compares a first bit of a bit stream to a first bit of a pattern. If the first bit of the bit stream and the first bit of the pattern are the same, another detector is allowed to read a second bit of the bit stream and compare it to a second bit of the pattern. This continues until all bits of the pattern are detected. By performing the comparison as each bit of the bit stream arrives on a node, the present detectors are able to detect bit patterns in high-speed bit streams.

    摘要翻译: 检测器将位流的第一位与模式的第一位进行比较。 如果比特流的第一比特和模式的第一比特相同,则允许另一个检测器读取比特流的第二比特并将其与该模式的第二比较进行比较。 这一直持续到模式的所有位被检测到。 通过在比特流的每个比特到达节点上执行比较,本检测器能够检测高速比特流中的比特模式。

    High speed differential signal detection
    95.
    发明授权
    High speed differential signal detection 有权
    高速差分信号检测

    公开(公告)号:US06727732B1

    公开(公告)日:2004-04-27

    申请号:US10246982

    申请日:2002-09-18

    申请人: Bin Wu Manoj N. Rana

    发明人: Bin Wu Manoj N. Rana

    IPC分类号: H03K522

    CPC分类号: H03K5/19 H03K5/082

    摘要: A method and a circuit detect the presence of a high-speed signal, such as a high-speed differential signal, based on a software-programmable signal amplitude threshold. In one embodiment, when the amplitude threshold is exceeded, a current is generated to charge a capacitor. The voltage on the capacitor is compared to a second pre-set voltage in a low-speed comparator, which provides an output voltage indicating detection of the high-speed signal.

    摘要翻译: 方法和电路基于软件可编程信号幅度阈值来检测诸如高速差分信号的高速信号的存在。 在一个实施例中,当超过振幅阈值时,产生电流以对电容器充电。 电容器中的电压与低速比较器中的第二预设电压进行比较,其提供指示检测高速信号的输出电压。

    Harmonic eliminating PWM converter
    96.
    发明授权
    Harmonic eliminating PWM converter 失效
    谐波消除PWM转换器

    公开(公告)号:US5835364A

    公开(公告)日:1998-11-10

    申请号:US873844

    申请日:1997-06-12

    IPC分类号: H02M7/19 H02M1/14

    CPC分类号: H02M7/19

    摘要: A PWM based converter including a Y-.DELTA., Y--Y transformer (or a .DELTA.--.DELTA., .DELTA.-Y transformer) wherein the Y-.DELTA. portion of the transformer phase shifts input voltage by 30.degree. with respect to the Y--Y portion of the transformer and thereby eliminates many low order supply line harmonics. The rectifier also includes two series connected PWM switching rectifiers, one rectifier receiving input voltages from the Y--Y portion of the transformer and the other rectifier receiving input voltages from the Y-.DELTA. portion of the transformer, and a controller for controlling the first and second rectifiers so as to eliminate low order harmonics on the supply lines that are not eliminated by the transformer. A capacitive bank is required between each rectifier and the transformer.

    摘要翻译: 一种基于PWM的转换器,包括Y-DELTA,YY变压器(或DELTA-DELTA,DELTA-Y变压器),其中变压器的Y-DELTA部分将输入电压相对于变压器的YY部分移位30°, 从而消除了许多低阶电源线谐波。 整流器还包括两个串联的PWM开关整流器,一个整流器接收来自变压器的YY部分的输入电压,另一个整流器接收来自变压器的Y-DELTA部分的输入电压,以及用于控制第一和第二整流器 以消除电源线上未被变压器消除的低次谐波。 每个整流器和变压器之间需要一个电容组。

    Modular multilevel converter and charging circuit therefor
    97.
    发明授权
    Modular multilevel converter and charging circuit therefor 有权
    模块化多电平转换器及充电电路

    公开(公告)号:US09559541B2

    公开(公告)日:2017-01-31

    申请号:US14597261

    申请日:2015-01-15

    摘要: Methods and charging apparatus are presented for charging cell capacitors of a multilevel power conversion system, in which an auxiliary charging source is selectively applied across DC bus terminals while one or more selected multilevel converter cells are alternately switched between a first state to bypass the selected cell or cells and a second state to charge the cell capacitor or capacitors of the selected cell via charging current from the auxiliary charging source.

    摘要翻译: 提出了用于为多电平电力转换系统的电池电容器充电的方法和充电装置,其中辅助充电源被选择性地施加在直流总线端子上,而一个或多个所选择的多电平转换器单元在第一状态之间交替切换以绕过所选择的单元 或单元以及第二状态,以通过来自辅助充电源的充电电流对所选择的单元的单元电容器或电容器进行充电。