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1.发明授权DC bus clamp circuit to prevent over voltage failure of adjustable speed drives 有权直流母线钳位电路可防止变频器过电压故障公开(公告)号：US08233258B2
公开(公告)日：2012-07-31
申请号：US12354109
申请日：2009-01-15
申请人： Lixiang Wei , Zhijun Liu , Gary L. Skibinski
发明人： Lixiang Wei , Zhijun Liu , Gary L. Skibinski
IPC分类号： H02H3/22
摘要： The present invention relates to a protective circuit to provide over voltage protection for an ASD. The protective circuit provides the benefits of fewer components with lower power ratings than existing protective circuits. The protective circuit may be incorporated directly in the ASD for continuous protection or mounted externally and connected to the ASD under operating conditions that require the circuit. This flexibility for mounting the protective circuit allows the capacitor of the protective circuit to be sized either in relation to capacitive elements on the DC bus within the ASD or according to external capacitance observed at the output of the ASD. In addition, the circuit is only operative during an overvoltage condition allowing for power ratings lower than would be required for continuous operation.
摘要翻译： 本发明涉及一种为ASD提供过电压保护的保护电路。 保护电路具有较少的额定功率比现有保护电路更少的元件的优点。 保护电路可以直接并入ASD，用于连续保护或外部安装，并在需要电路的工作条件下连接到ASD。 安装保护电路的这种灵活性允许保护电路的电容器的尺寸与ASD内的DC总线上的电容元件或ASD的输出端所观察到的外部电容相匹配。 此外，该电路仅在过压状态下工作，允许额定电压低于连续工作所需的额定功率。
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2.发明申请DC BUS CLAMP CIRCUIT TO PREVENT OVER VOLTAGE FAILURE OF ADJUSTABLE SPEED DRIVES 有权DC BUS钳位电路，以防止可调节速度驱动器的电压故障公开(公告)号：US20100177452A1
公开(公告)日：2010-07-15
申请号：US12354109
申请日：2009-01-15
申请人： Lixiang Wei , Zhijun Liu , Gary L. Skibinski
发明人： Lixiang Wei , Zhijun Liu , Gary L. Skibinski
IPC分类号： H02H9/04
摘要： The present invention relates to a protective circuit to provide over voltage protection for an ASD. The protective circuit provides the benefits of fewer components with lower power ratings than existing protective circuits. The protective circuit may be incorporated directly in the ASD for continuous protection or mounted externally and connected to the ASD under operating conditions that require the circuit. This flexibility for mounting the protective circuit allows the capacitor of the protective circuit to be sized either in relation to capacitive elements on the DC bus within the ASD or according to external capacitance observed at the output of the ASD. In addition, the circuit is only operative during an overvoltage condition allowing for power ratings lower than would be required for continuous operation.
摘要翻译： 本发明涉及一种为ASD提供过电压保护的保护电路。 保护电路具有较少的额定功率比现有保护电路更少的元件的优点。 保护电路可以直接并入ASD，用于连续保护或外部安装，并在需要电路的工作条件下连接到ASD。 安装保护电路的这种灵活性允许保护电路的电容器的尺寸与ASD内的DC总线上的电容元件或ASD的输出端所观察到的外部电容相匹配。 此外，该电路仅在过压状态下工作，允许额定电压低于连续工作所需的额定功率。
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公开(公告)号：US08841917B2
公开(公告)日：2014-09-23
申请号：US13077212
申请日：2011-03-31
CPC分类号： G01R31/025 , G01R31/42 , H02M5/458
摘要： The present techniques include methods and systems for detecting the grounding condition of an electrical system to automatically determine a suitable electrical drive configuration. The drive includes a test resistor which may be connected or disconnected from the drive to measure different drive voltages. The measured drive voltages are analyzed to determine a type of grounding configuration of the electrical system in which the drive is to be installed. Embodiments also include determining ground resistance condition such as a high resistance ground (HRG) fault or a ground resistance fault when the drive is in operation.
摘要翻译： 本技术包括用于检测电气系统的接地状态以自动确定合适的电气驱动配置的方法和系统。 该驱动器包括可以与驱动器连接或断开的测试电阻，以测量不同的驱动电压。 分析测量的驱动电压以确定要安装驱动器的电气系统的接地配置类型。 实施例还包括当驱动器运行时确定诸如高电阻接地（HRG）故障或接地电阻故障之类的接地电阻状况。
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4.发明授权Method and apparatus for detecting a location of ground faults in a motor/motor drive combination 有权用于检测电动机/电动机驱动组合中的接地故障位置的方法和装置公开(公告)号：US08593150B2
公开(公告)日：2013-11-26
申请号：US12943571
申请日：2010-11-10
IPC分类号： G01R31/14
CPC分类号： G01R31/025 , G01R31/343 , G01R31/42
摘要： A motor drive system provides for analysis of current flow in the DC bus to identify ground faults and their locations. Low-frequency positive polarity and negative polarity current differences indicate ground faults from the positive DC bus and negative DC bus respectively. High-frequency signals indicate ground faults in the motor windings and connecting leads.
摘要翻译： 电机驱动系统用于分析直流总线中的电流，以识别接地故障及其位置。 低频正极性和负极性电流差异分别表示正直流母线和负直流母线的接地故障。 高频信号表示电机绕组和连接引线的接地故障。
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5.发明授权Compensator with filter for use with a three-phase drive powering a one-phase load 有权带过滤器的补偿器，用于为单相负载供电的三相驱动公开(公告)号：US07602622B2
公开(公告)日：2009-10-13
申请号：US11461697
申请日：2006-08-01
IPC分类号： H02M5/458
CPC分类号： H02M1/12
摘要： The present invention is directed to a compensator-filter circuit for reducing low order current harmonics in a three-phase drive system driving a single-phase load, the three-phase drive system including a three-phase source voltage connected to a rectifier system connected to a DC link capacitor connected to a three-phase voltage source inverter.
摘要翻译： 本发明涉及一种用于降低驱动单相负载的三相驱动系统中的低阶电流谐波的补偿器滤波电路，该三相驱动系统包括连接到连接到整流器系统的三相源电压 连接到连接到三相电压源逆变器的直流链路电容器。
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公开(公告)号：US08243481B2
公开(公告)日：2012-08-14
申请号：US12612544
申请日：2009-11-04
申请人： Lixiang Wei , Gary L. Skibinski
发明人： Lixiang Wei , Gary L. Skibinski
摘要： Techniques for using multiple 18-pulse rectifier circuits in parallel are described herein. In particular, each rectifier circuit may include an autotransformer having 15 inductors coupled in series, joined by 15 nodes interposed between pairs of the inductors. The inductors may be represented as a hexagon in which alternating sides of the hexagon have two and three inductors, respectively. Each rectifier circuit may also include three inputs for three-phase AC power coupled to alternating vertices of the hexagonal representation and nine outputs for AC power coupled between each node that is not a vertex of the hexagonal representation and a respective diode bridge. Outputs of the diode bridges for the rectifier circuits may be coupled to a DC bus. In addition, a means for reducing circulating current between the parallel rectifier circuits and for promoting load sharing between the parallel rectifier circuits is also provided.
摘要翻译： 本文描述了并联使用多个18脉冲整流电路的技术。 特别地，每个整流电路可以包括具有15个电感器的自耦变压器，该电感器串联耦合，由插入在电感器对之间的15个节点连接。 电感器可以表示为六边形，其中六边形的交替侧分别具有两个和三个电感器。 每个整流器电路还可以包括耦合到六边形表示的交替顶点的三相AC功率的三个输入和耦合在不是六边形表示的顶点的各个节点之间的AC功率的九个输出和相应的二极管桥。 用于整流器电路的二极管桥的输出可以耦合到DC总线。 此外，还提供了用于降低并联整流器电路之间的循环电流并且用于促进并联整流器电路之间的负载共享的装置。
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公开(公告)号：US20110103105A1
公开(公告)日：2011-05-05
申请号：US12612544
申请日：2009-11-04
申请人： Lixiang Wei , Gary L. Skibinski
发明人： Lixiang Wei , Gary L. Skibinski
摘要： Embodiments of the present invention provide novel techniques for using multiple 18-pulse rectifier circuits in parallel. In particular, each rectifier circuit may include an autotransformer having 15 inductors coupled in series, joined by 15 nodes interposed between pairs of the inductors. The inductors may be represented as a hexagon in which alternating sides of the hexagon have two and three inductors, respectively. Each rectifier circuit may also include three inputs for three-phase AC power coupled to alternating vertices of the hexagonal representation and nine outputs for AC power coupled between each node that is not a vertex of the hexagonal representation and a respective diode bridge. Outputs of the diode bridges for the rectifier circuits may be coupled to a DC bus. In addition, a means for reducing circulating current between the parallel rectifier circuits and for promoting load sharing between the parallel rectifier circuits is also provided.
摘要翻译： 本发明的实施例提供并行使用多个18脉冲整流电路的新技术。 特别地，每个整流器电路可以包括具有15个电感器的自耦变压器，该电感器串联耦合，由插入在电感器对之间的15个节点连接。 电感器可以表示为六边形，其中六边形的交替侧分别具有两个和三个电感器。 每个整流电路还可以包括耦合到六边形表示的交替顶点的三相AC功率的三个输入和耦合在不是六边形表示的顶点的每个节点之间的AC功率的九个输出和相应的二极管桥。 用于整流电路的二极管桥的输出可以耦合到DC总线。 此外，还提供了用于降低并联整流器电路之间的循环电流并且用于促进并联整流器电路之间的负载共享的装置。
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8.发明申请公开(公告)号：US20110103096A1
公开(公告)日：2011-05-05
申请号：US12612562
申请日：2009-11-04
申请人： Lixiang Wei , Gary L. Skibinski
发明人： Lixiang Wei , Gary L. Skibinski
IPC分类号： H02M7/06
摘要： Embodiments of the present invention provide novel techniques for using multiple 18-pulse rectifier circuits in parallel. In particular, each rectifier circuit may include an autotransformer having 15 inductors coupled in series, joined by 15 nodes interposed between pairs of the inductors. The inductors may be represented as a hexagon in which alternating sides of the hexagon have two and three inductors, respectively. Each rectifier circuit may also include three inputs for three-phase AC power coupled to alternating vertices of the hexagonal representation and nine outputs for AC power coupled between each node that is not a vertex of the hexagonal representation and a respective diode bridge. Outputs of the diode bridges for the rectifier circuits may be coupled to a DC bus. In addition, a means for reducing circulating current between the parallel rectifier circuits and for promoting load sharing between the parallel rectifier circuits is also provided.
摘要翻译： 本发明的实施例提供并行使用多个18脉冲整流电路的新技术。 特别地，每个整流电路可以包括具有15个电感器的自耦变压器，该电感器串联耦合，由插入在电感器对之间的15个节点连接。 电感器可以表示为六边形，其中六边形的交替侧分别具有两个和三个电感器。 每个整流器电路还可以包括耦合到六边形表示的交替顶点的三相AC功率的三个输入和耦合在不是六边形表示的顶点的各个节点之间的AC功率的九个输出和相应的二极管桥。 用于整流电路的二极管桥的输出可以耦合到DC总线。 此外，还提供了用于降低并联整流器电路之间的循环电流并且用于促进并联整流器电路之间的负载共享的装置。
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9.发明授权Compensation circuit for use with a three-phase drive powering a single-phase load 失效补偿电路，用于为单相负载供电的三相驱动公开(公告)号：US07477531B2
公开(公告)日：2009-01-13
申请号：US11461688
申请日：2006-08-01
IPC分类号： H02M5/458
CPC分类号： H02M1/126 , H02M5/4585
摘要： A compensator circuit for reducing low order current harmonics in a three-phase drive system driving a single-phase load, the three-phase drive system including a three-phase source voltage connected to a rectifier system connected to a DC link capacitor connected to a three-phase voltage source inverter that supplies three-phase power.
摘要翻译： 一种用于降低驱动单相负载的三相驱动系统中的低阶电流谐波的补偿电路，所述三相驱动系统包括连接到连接到连接到所述单相负载的DC链路电容器的整流器系统的三相源电压 提供三相电源的三相电压源逆变器。
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公开(公告)号：US07502238B2
公开(公告)日：2009-03-10
申请号：US11095015
申请日：2005-03-31
摘要： A rectifier includes a transformer, a rectifying bridge, a link capacitor, and at least a first resonance loop. The transformer is operable to receive three phase input signals having a source frequency and generate a plurality of transformer phase signals. The rectifying bridge has a number of stages corresponding to the number of transformer phase signals and is operable to generate a rectified output signal based on the transformer phase signals. The link capacitor is coupled across the rectifying bridge. The first resonance loop is coupled between the rectifying bridge and the link capacitor. The first resonance loop has a first resonance frequency corresponding to a harmonic frequency of the source frequency.
摘要翻译： 整流器包括变压器，整流桥，链路电容器和至少第一谐振回路。 变压器可操作以接收具有源频率的三相输入信号，并产生多个变压器相位信号。 整流桥具有与变压器相位信号的数量相对应的级数，并且可操作以基于变压器相位信号产生整流输出信号。 连接电容器跨越整流桥耦合。 第一谐振回路耦合在整流桥和链路电容之间。 第一谐振回路具有对应于源频率的谐波频率的第一谐振频率。
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