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1. 发明授权

US07675192B2 Active DC bus filter for fuel cell applications 有权
标题翻译：用于燃料电池应用的有源直流母线滤波器
公开(公告)号：US07675192B2
公开(公告)日：2010-03-09
申请号：US11153171
申请日：2005-06-15
申请人： David Tang , Silva Hiti , Constantin C. Stancu , Gregory S. Smith
发明人： David Tang , Silva Hiti , Constantin C. Stancu , Gregory S. Smith
IPC分类号： B60L1/00 , B60L3/00 , H02G3/00
CPC分类号： B60L11/1887 , H02P6/10 , H02P25/098 , Y02T10/642 , Y02T90/16 , Y02T90/34
摘要： A control system for a vehicle powered by a fuel cell includes a voltage conversion device that communicates with the fuel cell through a voltage bus and a propulsion system that is selectively powered by the fuel cell through the voltage bus and that selectively generates a ripple current in the voltage bus. The voltage conversion device is regulated to selectively generate a counter-ripple current that reduces the ripple current.
摘要翻译：用于由燃料电池供电的车辆的控制系统包括电压转换装置，其通过电压总线和推进系统与燃料电池连通，该推进系统由燃料电池通过电压总线选择性供电，并且选择性地产生纹波电流电压总线。调节电压转换器件以选择性地产生减小纹波电流的反纹波电流。

2. 发明授权

US06984960B2 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：US06984960B2
公开(公告)日：2006-01-10
申请号：US10634528
申请日：2003-08-05
申请人： Constantin C. Stancu , Silva Hiti
发明人： Constantin C. Stancu , Silva Hiti
IPC分类号： H02P5/34 , H02P7/42 , G05B11/01
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。

3. 发明授权

US06222335B1 Method of controlling a voltage-fed induction machine 有权
标题翻译：控制电压感应电机的方法
公开(公告)号：US06222335B1
公开(公告)日：2001-04-24
申请号：US09492662
申请日：2000-01-27
申请人： Silva Hiti , Constantin C. Stancu
发明人： Silva Hiti , Constantin C. Stancu
IPC分类号： H02P700
CPC分类号： B60L15/2045 , B60L11/1803 , B60L15/025 , B60L2220/12 , H02P21/22 , Y02T10/643 , Y02T10/7005 , Y02T10/7283
摘要： A control algorithm or method for use in controlling a voltage-fed induction machine. The control algorithm includes the following steps. The DC link voltage supplied to an inverter driving the induction machine is monitored. When the DC link voltage is high enough, the algorithm controls the amount of current supplied to the induction machine to provide current controlled operation of the induction machine. When the DC link voltage is not high enough to control the current under transient conditions, the induction machine is controlled by imposing the maximum possible phase voltage and optimal slip angle on the machine to provide maximal torque per ampere operation of the induction machine. The maximal torque per ampere operation is performed when either of the following conditions is met: a) the torque level required by the induction machine is such that efficiency optimization cannot be performed, or b) current regulators approach saturation. The current controlled operation is performed when a) the torque level required by the induction machine is at a level that allows efficiency optimization, and b) the current regulators are not near saturation. The efficiency optimization in the current controlled mode is performed by using a single constant over the whole operating range.
摘要翻译：一种用于控制电压感应电机的控制算法或方法。控制算法包括以下步骤。监控提供给驱动感应电机的变频器的直流母线电压。当DC链路电压足够高时，算法控制提供给感应电机的电流量，以提供感应电机的电流控制操作。当直流母线电压不足以在瞬态条件下控制电流时，通过在机器上施加最大可能的相电压和最佳滑移角来控制感应电机，以提供感应电机的每安培运行的最大扭矩。当满足以下任一条件时，执行每安培运行的最大扭矩：a）感应电机所需的转矩水平使得不能执行效率优化，或b）电流调节器接近饱和。当a）感应电机所需的转矩水平处于允许效率优化的水平，以及b）电流调节器不接近饱和时，执行电流控制操作。通过在整个工作范围内使用单个常数来执行电流控制模式下的效率优化。

4. 发明授权

US07944160B2 Redundant DC bus discharge for an electric motor system 有权
标题翻译：用于电动机系统的冗余直流母线放电
公开(公告)号：US07944160B2
公开(公告)日：2011-05-17
申请号：US12047120
申请日：2008-03-12
申请人： Silva Hiti , David Tang , Brian A. Welchko , Milun Perisic , Constantin C. Stancu
发明人： Silva Hiti , David Tang , Brian A. Welchko , Milun Perisic , Constantin C. Stancu
IPC分类号： H02P21/00
CPC分类号： H02P21/0003 , H02M2001/322
摘要： Methods and apparatus are provided for discharging a direct current (DC) bus providing power to a motor control circuit in an electric motor system. The method includes the steps of detecting a predetermined discharge signal and generating operational control signals comprising phase currents for dissipating energy from the DC bus through a passive load in response to detecting the predetermined discharge signal, wherein the passive load includes motor windings of an electric motor of the electric motor system. The method also includes the step of providing the operational control signals to the motor control circuit for discharging the DC bus through the motor control circuit and the motor windings of the electric motor.
摘要翻译：提供了用于对在电动机系统中的电动机控制电路供电的直流（DC）总线的放电的方法和装置。该方法包括以下步骤：响应于检测到预定的放电信号，产生包括用于从DC总线通过无源负载消耗能量的相电流的操作控制信号，其中被动负载包括电动机的电动机绕组的电机系统。该方法还包括向电动机控制电路提供操作控制信号以通过电动机控制电路和电动机的电动机绕组排放DC总线的步骤。

5. 发明授权

US06617820B2 Auxiliary power conversion by phase-controlled rectification 失效
标题翻译：通过相位控制整流进行辅助电源转换
公开(公告)号：US06617820B2
公开(公告)日：2003-09-09
申请号：US09947294
申请日：2001-09-07
申请人： Douglas S. Carlson , Constantin C. Stancu , James M. Nagashima , Silva Hiti , Khwaja M. Rahman
发明人： Douglas S. Carlson , Constantin C. Stancu , James M. Nagashima , Silva Hiti , Khwaja M. Rahman
IPC分类号： H02P528
CPC分类号： B60L1/003 , B60L11/1803 , B60L11/1887 , B60L15/007 , B60L15/20 , B60L2220/18 , B60L2220/54 , B60L2220/58 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , B60L2240/527 , B60L2240/529 , Y02T10/641 , Y02T10/645 , Y02T10/7275 , Y02T90/34
摘要： A method of generating low voltage auxiliary power forms for electric or hybrid vehicle use by tapping power from the traction motor primary winding with a secondary winding and rectifier.
摘要翻译：一种用于通过从具有次级绕组和整流器的牵引电动机初级绕组抽出电力来产生用于电动或混合动力车辆的低压辅助动力形式的方法。

6. 发明授权

US06288515B1 System and method for controlling a surface-mounted permanent magnet synchronous machine drive over a wide speed range using a reference voltage 有权
标题翻译：使用参考电压在宽速度范围内控制表面安装的永磁同步电机驱动的系统和方法
公开(公告)号：US06288515B1
公开(公告)日：2001-09-11
申请号：US09552426
申请日：2000-04-19
申请人： Silva Hiti , Constantin C. Stancu , Dragan S. Maric
发明人： Silva Hiti , Constantin C. Stancu , Dragan S. Maric
IPC分类号： H02P528
CPC分类号： H02P6/085 , H02P21/08
摘要： A surface-mounted permanent magnet synchronous machine drive and a method of controlling the machine drive. Flux weakening and current regulating loops cooperate to provide automatic transition to the flux weakening mode (operation above base speed), regardless of DC bus voltage, load or other operating conditions. The modulation index (d) is used as a condition for automatic start of flux weakening operation is very useful because this point can be easily changed by software when necessary, regardless of the value of DC bus voltage. This feature provides significant performance improvement. No look-up tables are used in the flux weakening loop. The on-set point for flux weakening is automatically adjusted, and may be changed through software. An appropriate d-axis current component is injected over the entire speed range, providing the maximum available torque (which corresponds to the q-axis current component).
摘要翻译：一种表面安装的永磁同步电机驱动器和一种控制机器驱动的方法。磁通弱化和电流调节回路协作，以提供自由过渡到磁通弱化模式（高于基本速度的运行），而不管直流母线电压，负载或其他工作条件如何。使用调制指数（d）作为自动启动磁通弱化操作的条件是非常有用的，因为无论DC总线电压值如何，该点在必要时可以通过软件容易地改变。此功能可显着提升性能。磁通弱化回路中没有使用查找表。磁通弱化的设定点自动调整，可通过软件更改。在整个速度范围内注入适当的d轴电流分量，提供最大可用转矩（对应于q轴电流分量）。

7. 发明授权

US07944161B2 DC bus discharge in an electric motor system 有权
标题翻译：直流母线放电在电动马达系统中
公开(公告)号：US07944161B2
公开(公告)日：2011-05-17
申请号：US12047123
申请日：2008-03-12
申请人： Silva Hiti , David Tang , Brian A. Welchko , Milun Perisic , Constantin C. Stancu
发明人： Silva Hiti , David Tang , Brian A. Welchko , Milun Perisic , Constantin C. Stancu
IPC分类号： H02P21/00
CPC分类号： H02P27/06 , H02P3/22 , H02P23/10
摘要： Methods and apparatus are provided for improved discharge of a DC bus which provides power to an inverter. An electric motor system provided with the improved discharge method for discharge of the DC bus includes an electric motor, the inverter which provides electric control for the permanent magnet electric motor, the direct current (DC) bus which provides power to the inverter, and a processor. The processor generates operational control signals and provides such operational control signals to the inverter. In response to detecting a predetermined discharge signal, the processor generates operational control signals for generating a ripple current in motor windings of the electric motor to dissipate energy from the DC bus through a passive load, the passive load including the motor windings of the electric motor.
摘要翻译：提供了用于改进向逆变器提供电力的DC总线的放电的方法和装置。具有改善的用于排放DC总线的放电方法的电动机系统包括电动机，为永磁电动机提供电力控制的逆变器，向逆变器供电的直流（DC）总线，以及处理器。处理器产生操作控制信号，并向变频器提供这种操作控制信号。响应于检测到预定的放电信号，处理器产生用于在电动机的电动机绕组中产生纹波电流的操作控制信号，以通过无源负载从DC总线耗散能量，包括电动机的电动机绕组的被动负载。

8. 再颁专利

USRE42200E1 Fault handling of inverter driven PM motor drives 有权
标题翻译：变频器驱动的PM电机驱动的故障处理
公开(公告)号：USRE42200E1
公开(公告)日：2011-03-08
申请号：US11962370
申请日：2007-12-21
申请人： Brian Welchko , Jonathan B. Huse , Silva Hiti , Brendan M. Conlon , Constantin C. Stancu , Khwaja M. Rahman , David Tang , William R. Cawthorne
发明人： Brian Welchko , Jonathan B. Huse , Silva Hiti , Brendan M. Conlon , Constantin C. Stancu , Khwaja M. Rahman , David Tang , William R. Cawthorne
IPC分类号： G05B9/02
CPC分类号： G05B9/02 , B60L3/0061 , B60L3/0069 , B60L3/04 , B60L15/2009 , Y02T10/645 , Y02T10/72 , Y02T10/7275
摘要： An apparatus includes a multi-phase inverter, a fault detector to indicate a detection of a fault, a sensor to provide a speed signal indicative of whether a speed of a PM motor is greater than a transition speed, and a controller. The controller is operable to apply either an open-circuit response or a short-circuit response to the multi-phase inverter. The open-circuit response is applied when the speed of the PM motor is greater less than the transition speed and a fault is detected. The short-circuit response is applied when the speed of the PM motor is less greater than the transition speed and the fault is detected. The transition speed is either a fixed predetermined speed or an adjusted predetermined speed.
摘要翻译：一种装置包括多相逆变器，用于指示故障检测的故障检测器，提供指示PM电动机的速度是否大于转换速度的速度信号的传感器以及控制器。控制器可操作地对多相逆变器施加开路响应或短路响应。当PM电机的转速大于转换速度并且检测到故障时，应用开路响应。当PM电机的速度小于转换速度并检测到故障时，应用短路响应。过渡速度是固定的预定速度或调整的预定速度。

9. 发明授权

US06950321B2 Active damping control for L-C output filters in three phase four-leg inverters 有权
标题翻译：三相四脚逆变器中L-C输出滤波器的主动阻尼控制
公开(公告)号：US06950321B2
公开(公告)日：2005-09-27
申请号：US10669618
申请日：2003-09-24
申请人： Constantin C. Stancu , Silva Hiti
发明人： Constantin C. Stancu , Silva Hiti
IPC分类号： H02M1/12 , H02M7/5387
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.
摘要翻译：提供了用于控制与负载连接的欠阻尼L-C滤波器的逆变器的方法和装置。处理逆变器输出的样本以产生电压调节信号和阻尼信号。电压调节信号包括调节和不平衡补偿元件，并被阻尼信号进一步修改。修改后的电压调节信号控制逆变器的开关电路，使变频器的输出稳定在负载上。

10. 发明授权

US06366043B1 Dynamic torque reference limiting in torque-controlled permanent magnet motor drives 失效
标题翻译：扭矩控制永磁电机驱动器中的动态转矩参考限制
公开(公告)号：US06366043B1
公开(公告)日：2002-04-02
申请号：US09492042
申请日：2000-01-27
申请人： Constantin C. Stancu , Silva Hiti , Dragan S. Maric
发明人： Constantin C. Stancu , Silva Hiti , Dragan S. Maric
IPC分类号： H02P700
CPC分类号： B60L11/1807 , B60L2220/14 , H02P6/28 , Y02T10/642 , Y02T10/7005
摘要： A control system and method for use in controlling a torque-controlled permanent magnet synchronous motor drive. A slew-rate limiter processes an input torque command to produce a modified torque command that is input to the motor drive. A controller is coupled to the slew-rate limiter and the motor drive for dynamically limiting the input torque command applied to the motor drive and its rate of increase. The slew rate limiter processes an applied torque command to output a modified torque command that is applied to the motor drive. Current control error signals are output by the motor drive. The RMS value of the current control error signals is computed. The RMS value is compared to low and high thresholds. If the RMS value is greater than the high threshold, the modified torque command is reduced until the RMS value is less than the high threshold. If the current control error signal is greater than the low threshold and less than the high threshold, the modified torque command is not increased in absolute value even if the input torque command is increasing in absolute value. If the RMS value is less than the low threshold, no change is made to the input torque command.
摘要翻译：一种用于控制转矩控制的永磁同步电动机驱动器的控制系统和方法。转速限制器处理输入转矩指令以产生输入到电动机驱动器的修正转矩指令。控制器耦合到转换速率限制器和电动机驱动器，用于动态地限制施加到电动机驱动器的输入转矩指令及其增加速率。压摆率限制器处理施加的转矩指令以输出施加到电动机驱动器的修正转矩指令。电机驱动器输出电流控制误差信号。计算出当前控制误差信号的RMS值。将RMS值与低阈值和高阈值进行比较。如果RMS值大于高阈值，则修正的转矩指令减小直到RMS值小于高阈值。如果电流控制误差信号大于低阈值且小于高阈值，则即使输入转矩指令的绝对值增加，修正转矩指令也不会在绝对值上增加。如果RMS值小于低阈值，则不会改变输入转矩指令。

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