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91. 发明申请

US20050063205A1 Method and apparatus for controlling a stand-alone 4-leg voltage source inverter 有权
公开(公告)号：US20050063205A1
公开(公告)日：2005-03-24
申请号：US10669919
申请日：2003-09-24
申请人： Constantin Stancu , Silva Hiti
发明人： Constantin Stancu , Silva Hiti
IPC分类号： H02M1/12 , H02M7/5387
CPC分类号： H02M7/53875 , H02M2007/53876 , Y10S323/908
摘要： Methods and apparatus are provided for controlling a stand-alone four-leg three-phase inverter. The inverter three-phase output is converted from AC domain elements to corresponding DC domain elements. The DC domain elements are processed into combined regulating and imbalance compensating signals, including over-current limiting. The compensating signals are restored to corresponding AC domain signals, and are processed into control inputs for the inverter, in order to stabilize the inverter output when connected to an unbalanced load. The inverter controller can be implemented entirely in software as a control algorithm.

92. 发明申请

US20050063202A1 Active damping control for L-C output filters in three phase four-leg inverters 有权
公开(公告)号：US20050063202A1
公开(公告)日：2005-03-24
申请号：US10669618
申请日：2003-09-24
申请人： Constantin Stancu , Silva Hiti
发明人： Constantin Stancu , Silva Hiti
IPC分类号： H02M1/12 , H02M7/5387 , H02M1/14
CPC分类号： H02M7/53875 , H02M1/12 , H02M2001/123
摘要： Methods and apparatus are provided for controlling an inverter with an under-damped L-C filter connected to a load. Samples of the inverter output are processed to generate voltage regulation signals and damping signals. The voltage regulation signals include both regulating and imbalance compensating elements, and are further modified by the damping signals. The modified voltage regulation signals control the switching circuits of the inverter to stabilize the inverter output to the load.

93. 发明授权

US06870348B2 Rotor resistance adaptation for indirect field oriented control of induction machine 有权
标题翻译：感应电机间接磁场定向控制的转子电阻适应
公开(公告)号：US06870348B2
公开(公告)日：2005-03-22
申请号：US10635214
申请日：2003-08-06
申请人： Milan S. Mijalkovic , Aleksandar M. Stankovic , Silva Hiti , James M. Nagashima
发明人： Milan S. Mijalkovic , Aleksandar M. Stankovic , Silva Hiti , James M. Nagashima
IPC分类号： H02P5/28 , H02P7/36
CPC分类号： H02P21/141 , H02P21/16 , H02P2207/01
摘要： An induction machine includes a rotor having rotor flux and a rotor resistance. The induction machine outputs first and second reference current values. A control system includes a first controller that outputs first and second reference voltage values to the induction machine and that generates an estimated rotor flux magnitude value based on a rotor resistance parameter. A computation circuit receives the first and second reference current values from the induction machine and the first and second voltage reference values from the first controller and calculates an actual rotor flux magnitude. A rotor resistance adjustor that updates the rotor resistance parameter based on the actual and estimated rotor flux magnitudes.
摘要翻译：感应电机包括具有转子磁通和转子电阻的转子。感应电机输出第一和第二参考电流值。控制系统包括：第一控制器，其将第一和第二参考电压值输出到感应电机，并且基于转子电阻参数产生估计的转子磁通量值。计算电路从感应电机接收第一和第二参考电流值，并从第一控制器接收第一和第二参考电压值，并计算实际转子磁通量。转子电阻调节器，其基于实际和估计的转子磁通量值来更新转子电阻参数。

94. 发明授权

US06864646B2 Multiple inverter system with low power bus ripples and method therefor 有权
标题翻译：具有低功率母线波纹的多逆变器系统及其方法
公开(公告)号：US06864646B2
公开(公告)日：2005-03-08
申请号：US10367201
申请日：2003-02-14
申请人： Khwaja M. Rahman , Silva Hiti , Scott D. Downer , Brian Welchko
发明人： Khwaja M. Rahman , Silva Hiti , Scott D. Downer , Brian Welchko
IPC分类号： B60L9/18 , H02P5/74 , H02P23/06 , H02P7/68 , G05B11/01 , G05B19/18 , H02P7/74
CPC分类号： H02P23/06 , H02P5/74
摘要： A multiple inverter system is powered from a common energy source such as a battery. First and second inverters are coupled to the common energy source and drive corresponding motors. First and second controllers provide pulse width modulated signals, modulated with respect to first and second clock signals, respectively, to the respective first and second inverters. A capacitor coupled between a power bus and a ground bus smoothes power bus ripples caused by simultaneous switching. To reduce the size needed for the capacitor, different modulation schemes, such as center based interleaved, and leading and lagging edge coincident, are used when both motors are in the motoring mode or both motors are in the regeneration mode. However, the same modulation scheme is used when one motor is in the motoring mode and the other motor is in the regeneration mode.
摘要翻译：多个逆变器系统由诸如电池的公共能量源供电。第一和第二逆变器耦合到共用能源并驱动相应的电动机。第一和第二控制器分别将相对于第一和第二时钟信号调制的脉宽调制信号提供给相应的第一和第二反相器。耦合在电源总线和接地总线之间的电容器平滑了由同时切换引起的电源总线波动。为了减小电容器所需的尺寸，当两个电动机处于电动模式或者两个电动机都处于再生模式时，使用不同的调制方案，例如基于中心的交错以及前沿和后沿一致。然而，当一个电机处于电动模式并且另一个电动机处于再生模式时，使用相同的调制方案。

95. 发明申请

US20050035676A1 Gearless wheel motor drive system 有权
标题翻译：无齿轮电机驱动系统
公开(公告)号：US20050035676A1
公开(公告)日：2005-02-17
申请号：US10903929
申请日：2004-07-29
申请人： Khwaja Rahman , Silva Hiti , Nitinkumar Patel , Terence Ward , James Nagashima , Fabio Crescimbini , Federico Caricchi
发明人： Khwaja Rahman , Silva Hiti , Nitinkumar Patel , Terence Ward , James Nagashima , Fabio Crescimbini , Federico Caricchi
IPC分类号： B60K6/26 , H02K1/18 , H02K1/27 , H02K3/46 , H02K7/14 , H02K9/22 , H02K21/24 , H02K29/03 , H02K7/06 , B60K1/00
CPC分类号： H02K1/2793 , B60K6/26 , B60K7/0007 , B60K2007/0038 , B60K2007/0092 , B60L1/02 , B60L3/003 , B60L3/0046 , B60L3/0061 , B60L7/14 , B60L11/1803 , B60L11/1881 , B60L15/025 , B60L15/06 , B60L15/08 , B60L15/20 , B60L15/2009 , B60L2210/40 , B60L2220/14 , B60L2220/16 , B60L2220/44 , B60L2220/50 , B60L2240/36 , B60L2240/421 , B60L2240/423 , B60L2240/425 , B60L2240/427 , B60L2240/429 , B60L2240/526 , B60L2240/527 , B60L2240/529 , B60L2240/547 , B60L2250/26 , B60L2270/145 , H02K7/14 , H02K21/24 , H02K29/03 , H02P21/06 , Y02T10/641 , Y02T10/643 , Y02T10/644 , Y02T10/7241 , Y02T10/7275 , Y02T90/34
摘要： Methods and apparatus are provided for an electric vehicle embodying an axial flux traction motor directly coupled to a wheel thereof. The traction motor comprises a stator having coils for producing a magnetic field, an annular rotor magnetically coupled to the stator and mechanically to an output shaft. Permanent magnets of alternating polarity are mounted on the annular rotor. Magnetic shunts bridge a portion of the stator slots above the coils. The magnets are arranged in groups with group-to-group spacing exceeding magnet-to-magnet spacing. Adjacent edges of the magnets diverge. The method comprises, looking up d- and q-axis currents to provide the requested torque and motor speed for the available DC voltage, combining at least one of the d- and q-axis currents with a field weakening correction term, converting the result from synchronous to stationary frame and operating an inverter therewith to provide current to the coils of the motor.
摘要翻译：提供了一种实现轴向通量牵引电动机的电动车辆的方法和装置，其直接联接到其车轮。牵引电动机包括具有用于产生磁场的线圈的定子，与定子磁耦合并机械地连接到输出轴的环形转子。交替极性的永磁体安装在环形转子上。磁分路桥接线圈上方的定子槽的一部分。磁体以组间距离超过磁体与磁体的间距分组排列。磁体的相邻边缘发散。该方法包括：查找d轴和q轴电流以为可用的直流电压提供所要求的转矩和电动机速度，将d轴和q轴电流中的至少一个与弱磁修正项组合，转换结果从同步到静止的框架并且与其一起操作逆变器以向电动机的线圈提供电流。

96. 发明申请

US20050029982A1 Methods and apparatus for current control of a three-phase voltage source inverter in the overmodulation region 有权
标题翻译：过调制区域三相电压源逆变器电流控制方法及装置
公开(公告)号：US20050029982A1
公开(公告)日：2005-02-10
申请号：US10634528
申请日：2003-08-05
申请人： Constantin Stancu , Silva Hiti
发明人： Constantin Stancu , Silva Hiti
IPC分类号： H02P5/34
CPC分类号： H02M1/12 , H02M7/53873 , H02M2007/53876 , H02P21/0089 , H02P21/50 , H02P29/50
摘要： A drive system that is suitable for high bandwidth current control of a three-phase voltage source inverter in the overmodulation region includes a feedback path that has a harmonic decoupling block that subtracts selected harmonic components from signals representative of a corresponding motor phase current signal. The harmonic decoupling block thereby generates corrected feedback signals. The drive system also includes subtractor blocks that subtract the corrected feedback signals from signals representative of open-loop magnetizing reference currents to generate difference signals. Also included is a modulation block that utilizes the difference signals to produce signals to drive a three-phase voltage source inverter in an overmodulated six-step mode.
摘要翻译：适用于过调制区域中三相电压源逆变器的高带宽电流控制的驱动系统包括具有谐波去耦块的反馈路径，该谐波去耦块从代表对应的电动机相电流信号的信号中减去所选谐波分量。因此，谐波去耦块产生校正的反馈信号。驱动系统还包括从代表开环磁化参考电流的信号中减去经校正的反馈信号以产生差分信号的减法器块。还包括利用差分信号产生信号以以过调制的六步模式驱动三相电压源逆变器的调制块。

97. 发明授权

US09240744B2 Methods, systems and apparatus for adjusting current and/or torque commands used to control operation of an asynchronous machine 有权
标题翻译：用于调节用于控制异步机的操作的电流和/或转矩指令的方法，系统和装置
公开(公告)号：US09240744B2
公开(公告)日：2016-01-19
申请号：US13547938
申请日：2012-07-12
申请人： Jihoon Jang , Bon Ho Bae , Silva Hiti
发明人： Jihoon Jang , Bon Ho Bae , Silva Hiti
IPC分类号： H02P1/04 , H02P21/06
CPC分类号： H02P21/06 , H02P2207/01
摘要： Embodiments of the present disclosure relate to methods, systems and apparatus for adjusting current and/or torque commands used to control operation of an asynchronous machine based on rotor flux of the asynchronous machine.
摘要翻译：本公开的实施例涉及用于基于异步机的转子通量来调整用于控制异步机的操作的电流和/或转矩指令的方法，系统和装置。

98. 发明申请

US20110187304A1 MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS 有权
标题翻译：电机相绕组故障检测方法及装置
公开(公告)号：US20110187304A1
公开(公告)日：2011-08-04
申请号：US12698221
申请日：2010-02-02
申请人： Mohammad N. Anwar , S.M. N. Hasan , Khwaja M. Rahman , Silva Hiti , Steven E. Schulz , Sean E. Gleason
发明人： Mohammad N. Anwar , S.M. N. Hasan , Khwaja M. Rahman , Silva Hiti , Steven E. Schulz , Sean E. Gleason
IPC分类号： G01R31/06
CPC分类号： G01R31/343
摘要： A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized negative sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.
摘要翻译：检测多相电机中的相绕组故障的方法可通过马达控制器执行，并且包括测量机器的反馈信号，包括每个相电流，并产生每相的参考相电压。该方法包括使用反馈信号和参考相电压来计算预定电压值，并将电压值与相应的阈值进行比较以确定故障。当电压值超过相应的阈值时，执行控制动作。电压值是以下中的一个或多个：归一化负序电压与调制指数的比率，每相的RMS电压以及每个相电流的总谐波失真。一种装置检测故障，并包括如上所述的马达控制器和算法。该装置可以包括电压逆变器，用于产生用于为机器供电的多相交流输出。

99. 发明授权

US07518335B2 Method and apparatus for PWM control of voltage source inverter to minimize current sampling errors in electric drives 有权
标题翻译：用于电压源逆变器PWM控制的方法和装置，以最小化电力驱动器中的电流采样误差
公开(公告)号：US07518335B2
公开(公告)日：2009-04-14
申请号：US11462454
申请日：2006-08-04
申请人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
发明人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
IPC分类号： H02P27/08
CPC分类号： H02P27/08
摘要： A method for controlling an alternating current (AC) motor includes choosing a pulse sequence based on a ripple current in the AC motor at a sampling instant; and providing a voltage to the AC motor based on the pulse sequence.
摘要翻译：一种用于控制交流（AC）电动机的方法包括：在采样时刻根据交流电动机的纹波电流选择脉冲序列; 并且基于脉冲序列向AC电动机提供电压。

100. 发明授权

US07483282B2 PWM method for cycloconverter 失效
标题翻译：循环换流器的PWM方法
公开(公告)号：US07483282B2
公开(公告)日：2009-01-27
申请号：US11468001
申请日：2006-08-29
申请人： Lateef A. Kajouke , Silva Hiti
发明人： Lateef A. Kajouke , Silva Hiti
IPC分类号： H02M7/48 , H02M5/00
CPC分类号： H02M5/297 , H02M7/4807
摘要： A method of using a cycloconverter switches a first switch of the first topology type to an on state after a magnitude of a current through an output inductor becomes less than a predetermined current threshold, and switches a second switch of the first topology type to an off state a first time after switching the first switch to the on state. The cycloconverter includes nodes on a first port, nodes on a second port, a switch pair coupled between a first node of the first port and a first node of the second port, a switch pair coupled between a second node of the first port and a first node of the second port, a switch pair coupled between a first node of the first port and a second node of the second port, and a switch pair coupled between a second node of the first port and a second node of the second port. Each switch pair includes a switch of each topology type.
摘要翻译：在通过输出电感器的电流的大小变得小于预定电流阈值之后，使用循环换流器的方法将第一拓扑类型的第一开关切换到导通状态，并且将第一拓扑类型的第二开关切换到关闭在将第一开关切换到接通状态之后，首先进行状态。循环变换器包括第一端口上的节点，第二端口上的节点，耦合在第一端口的第一节点和第二端口的第一节点之间的交换机对，耦合在第一端口的第二节点和第二端口的第一节点，耦合在第一端口的第一节点和第二端口的第二节点之间的开关对，以及耦合在第一端口的第二节点和第二端口的第二节点之间的开关对。每个交换机对包括每种拓扑类型的交换机。

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