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1. 发明授权

US08634976B2 Systems and methods for managing torque capability in electric motor systems 有权
标题翻译：用于管理电动机系统扭矩能力的系统和方法
公开(公告)号：US08634976B2
公开(公告)日：2014-01-21
申请号：US12715081
申请日：2010-03-01
申请人： Brian A. Welchko , Nitinkumar R. Patel , Leah Dunbar , William R. Cawthorne , Steven E. Schulz
发明人： Brian A. Welchko , Nitinkumar R. Patel , Leah Dunbar , William R. Cawthorne , Steven E. Schulz
IPC分类号： B60L9/00
CPC分类号： B60L15/20 , H02P29/032 , H02P29/60 , Y02T10/645 , Y02T10/7275 , Y10T477/23
摘要： A method for operating an electric motor is provided. The method includes receiving a torque request; determining long term torque capabilities and short term torque capabilities of the electric motor; generating a torque command based on the torque request and at least one of the long term torque capabilities or the short term torque capabilities; and controlling the electric motor in accordance with the torque command.
摘要翻译：提供了一种用于操作电动机的方法。该方法包括接收扭矩请求; 确定电动机的长期扭矩能力和短期扭矩能力; 基于所述转矩请求和所述长期扭矩能力或短期扭矩能力中的至少一个产生转矩指令; 并根据转矩指令控制电动机。

2. 发明授权

US08487575B2 Electric motor stator winding temperature estimation 有权
标题翻译：电动机定子绕组温度估算
公开(公告)号：US08487575B2
公开(公告)日：2013-07-16
申请号：US12568002
申请日：2009-09-28
申请人： Chia-Chou Yeh , Nitinkumar R. Patel , Yo Chan Son , Steven E. Schulz
发明人： Chia-Chou Yeh , Nitinkumar R. Patel , Yo Chan Son , Steven E. Schulz
IPC分类号： G05D23/00
CPC分类号： H02P6/08 , G01R31/343 , H02P29/664
摘要： A temperature estimation controller and methods are provided for estimating stator winding temperature over a full range of motor operating speeds. In one implementation, the angular velocity of a motor is determined along with a total power loss for each phase of said motor. The total power loss in each phase comprises stator winding power loss and a core power loss. Stator winding temperatures for each phase of motor can then estimated based on the total power loss in that phase, and a combined thermal impedance for that phase. The combined thermal impedance comprises a first thermal impedance between the stator winding and the stator core, and a second thermal impedance between the stator core and the motor coolant.
摘要翻译：提供了一种温度估计控制器和方法，用于在整个电机运行速度范围内估计定子绕组温度。在一个实施方式中，确定电动机的角速度以及所述电动机的每相的总功率损耗。每相中的总功率损耗包括定子绕组功率损耗和铁芯功率损耗。然后可以根据该阶段的总功率损耗和该阶段的组合热阻抗来估计电机各相的定子绕组温度。组合的热阻抗包括定子绕组和定子铁心之间的第一热阻抗，以及定子铁芯和电动机冷却剂之间的第二热阻抗。

3. 发明申请

US20080197800A1 REDUCTION OF SUBHARMONIC OSCILLATION AT HIGH FREQUENCY OPERATION OF A POWER INVERTER 有权
标题翻译：降低功率变换器高频运行时的次谐波振荡
公开(公告)号：US20080197800A1
公开(公告)日：2008-08-21
申请号：US11676527
申请日：2007-02-20
申请人： Bonho Bae , Nitinkumar R. Patel , Steven E. Schulz , Silva Hiti
发明人： Bonho Bae , Nitinkumar R. Patel , Steven E. Schulz , Silva Hiti
IPC分类号： H02P27/04
CPC分类号： B60L15/025 , B60L11/1803 , B60L15/20 , B60L2210/20 , B60L2220/14 , H02P21/04 , Y02T10/643 , Y02T10/7005 , Y02T10/725 , Y02T10/7275
摘要： A control architecture for an electrical inverter includes a synchronous frame current regulator and a stationary frame current regulator. The stationary frame current regulator receives input currents that represent filtered versions of stationary frame currents that correspond to the inverter output currents. The control architecture employs an adaptive filter module that filters the stationary frame currents to remove the fundamental motor frequency component (and its related harmonics), thus extracting any low frequency harmonic components. The stationary frame current regulator processes the low frequency components, while the synchronous frame current regulator processes the fundamental frequency component, resulting in suppression of low frequency oscillations in the inverter output.
摘要翻译：用于电力逆变器的控制架构包括同步电流调节器和静止电流调节器。静态框架电流调节器接收表示对应于逆变器输出电流的静态框电流的滤波版本的输入电流。控制架构采用自适应滤波器模块，对固定电流进行滤波，去除基波电机频率分量（及其相关谐波），从而提取任何低频谐波分量。静态电流调节器处理低频分量，而同步电流调节器处理基频分量，从而抑制逆变器输出中的低频振荡。

4. 发明授权

US07211984B2 Start-up and restart of interior permanent magnet machines 有权
标题翻译：启动和重新启动内置永磁机
公开(公告)号：US07211984B2
公开(公告)日：2007-05-01
申请号：US10984269
申请日：2004-11-09
申请人： Nitinkumar R. Patel , Steven E. Schulz , Thomas P. O'Meara
发明人： Nitinkumar R. Patel , Steven E. Schulz , Thomas P. O'Meara
IPC分类号： H02P21/14
CPC分类号： H02P6/20 , F02N11/04 , F02N11/0859 , F02N2200/041 , H02P1/46 , H02P21/34
摘要： A method of starting a permanent magnet machine. A machine stator voltage in a stationary reference frame is sensed. An initial speed of a rotor of the machine is estimated based on the sensed voltage, and state variables of control algorithms are initialized based on the estimated initial speed. This method can provide smooth startup and/or restart at any speed.
摘要翻译：一种启动永磁机的方法。感测到静止参考系中的机器定子电压。基于感测到的电压来估计机器的转子的初始速度，并且基于估计的初始速度来初始化控制算法的状态变量。该方法可以以任何速度提供平稳的启动和/或重新启动。

5. 发明授权

US06979968B2 Method and system for managing processor execution time utilizing variable frequency switching 有权
标题翻译：使用可变频率切换管理处理器执行时间的方法和系统
公开(公告)号：US06979968B2
公开(公告)日：2005-12-27
申请号：US10676529
申请日：2003-10-01
申请人： James M. Nagashima , Thomas P. O'Meara , Nitinkumar R. Patel , Steven E. Schulz
发明人： James M. Nagashima , Thomas P. O'Meara , Nitinkumar R. Patel , Steven E. Schulz
IPC分类号： H02P3/00 , H02P5/00 , H02P23/00
CPC分类号： H02P23/0004
摘要： The present invention includes a method for managing processor execution time in a motor controller. The method includes receiving motor speed data, comparing the received motor speed data to predetermined motor speed ranges, determining a motor speed range based on the comparison, and modulating an inverter switching frequency of the motor controller processor based on the motor speed range. The step of receiving motor speed data may include receiving machine terminal information, processing the received machine terminal information utilizing a sensorless control algorithm, and determining motor speed data based on the processed information. The step of modulating the inverter switching frequency may include determining a modified inverter switching frequency value based on the determined motor speed range and providing the modified inverter switching frequency value to a processor control algorithm. In one embodiment, the processor control algorithm modifies the inverter switching frequency based on the modified inverter switching frequency value.
摘要翻译：本发明包括一种用于在马达控制器中管理处理器执行时间的方法。该方法包括接收电动机速度数据，将接收到的电动机速度数据与预定的电动机速度范围进行比较，基于比较确定电动机速度范围，以及基于电动机速度范围来调制电动机控制器处理器的逆变器开关频率。接收电动机速度数据的步骤可以包括接收机器终端信息，利用无传感器控制算法处理所接收的机器终端信息，以及基于处理的信息确定电动机速度数据。调制逆变器开关频率的步骤可以包括基于所确定的电动机速度范围确定修正的逆变器开关频率值，并将修改的逆变器开关频率值提供给处理器控制算法。在一个实施例中，处理器控制算法基于经修改的逆变器开关频率值来修改逆变器开关频率。

6. 发明授权

US06763622B2 Amplitude detection method and apparatus for high frequency impedance tracking sensorless algorithm 有权
标题翻译：用于高频阻抗跟踪无传感器算法的幅度检测方法和装置
公开(公告)号：US06763622B2
公开(公告)日：2004-07-20
申请号：US10268507
申请日：2002-10-10
申请人： Steven E. Schulz , Nitinkumar R. Patel
发明人： Steven E. Schulz , Nitinkumar R. Patel
IPC分类号： H02P146
CPC分类号： B60L11/18 , B60L11/1803 , B60L15/025 , H02P6/181 , H02P6/183 , H02P6/185 , H02P21/0089 , H02P21/18 , H02P21/26 , H02P2203/05 , H02P2203/11 , H02P2207/05 , Y02T10/643 , Y02T10/7005 , Y02T10/7258
摘要： A control system for an electric motor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a first motor speed control block in the controller injecting a high frequency signal into the electric motor to determine the speed and position of the electric motor, where the first motor speed control block includes a tuned moving average filter to determine the magnitude of high frequency current in the electric motor.
摘要翻译：一种用于电动机的控制系统，包括用于向电动机提供电力的逆变器，用于控制逆变器的控制器，控制器中的第一电动机速度控制块，将高频信号注入电动机以确定速度和位置电动机，其中第一电动机速度控制块包括调谐移动平均滤波器，以确定电动机中的高频电流的大小。

7. 发明授权

US08319460B2 Method and system for initiating operation of an electric motor 有权
标题翻译：电动机启动运行的方法和系统
公开(公告)号：US08319460B2
公开(公告)日：2012-11-27
申请号：US12606839
申请日：2009-10-27
申请人： Yo Chan Son , Jihoon Jang , Brian A. Welchko , Nitinkumar R. Patel , Steven E. Schulz
发明人： Yo Chan Son , Jihoon Jang , Brian A. Welchko , Nitinkumar R. Patel , Steven E. Schulz
IPC分类号： H02P6/04
CPC分类号： H02P6/20
摘要： Methods and systems for controlling an electric motor are provided. The motor includes a plurality of windings. Each winding is coupled to a respective set of first and second switches. The first switch of each set of switches is simultaneously activated. Current flow through the plurality of windings is measured while the first switch of each set of switches is activated. The electric motor is controlled according to a first motor control method if the measured current is below a predetermined threshold. The electric motor is controlled according to a second motor control method if the measured current is above the predetermined threshold.
摘要翻译：提供了用于控制电动机的方法和系统。马达包括多个绕组。每个绕组耦合到相应的一组第一和第二开关。每组开关的第一个开关同时被激活。当每组开关的第一开关被激活时，测量通过多个绕组的电流。如果测量电流低于预定阈值，则根据第一电动机控制方法来控制电动机。如果测量的电流高于预定阈值，则根据第二电动机控制方法来控制电动机。

8. 发明授权

US08253360B2 Vector controlled motor drive system implementing pulse width modulated (PWM) waveforms 有权
标题翻译：实现脉宽调制（PWM）波形的矢量控制电机驱动系统
公开(公告)号：US08253360B2
公开(公告)日：2012-08-28
申请号：US12503591
申请日：2009-07-15
申请人： Steven E. Schulz , Yo Chan Son , Nitinkumar R. Patel
发明人： Steven E. Schulz , Yo Chan Son , Nitinkumar R. Patel
IPC分类号： H02P21/00
CPC分类号： H02P6/182 , B60L15/025 , B60L15/08 , B60L2200/26 , B60L2260/44 , H02P21/04 , H02P21/18 , H02P21/24 , H02P27/08 , Y02T10/643
摘要： A vector controlled motor drive system is provided that includes a test vector and duty cycle generator module designed to receive a set of three-phase voltage command signals and designed to generate a set of pulse width modulated (PWM) waveforms. The set of PWM waveforms comprise: a first modified switching vector signal for a first motor phase that comprises at least two test pulses over three consecutive PWM cycles. The first modified switching vector signal has a first amplitude value that changes between a high amplitude value and a low amplitude value during the three consecutive PWM cycles. A number of transitions by the first modified switching vector signal between the low amplitude value and the high amplitude value over the three consecutive PWM cycles is greater than six and less than twelve.
摘要翻译：提供了一个矢量控制的电机驱动系统，其包括测试矢量和占空比发生器模块，该模块设计成接收一组三相电压指令信号，并被设计成产生一组脉冲宽度调制（PWM）波形。所述PWM波形组包括：用于第一电动机相位的第一修改的开关矢量信号，其包括在三个连续的PWM周期上的至少两个测试脉冲。第一修改开关矢量信号具有在三个连续PWM周期期间在高振幅值和低振幅值之间变化的第一振幅值。在三个连续PWM周期中，通过第一修改的开关矢量信号在低振幅值和高幅度值之间的转换大于6并小于12。

9. 发明授权

US07839108B2 Electric motor stator winding temperature estimation 有权
标题翻译：电动机定子绕组温度估算
公开(公告)号：US07839108B2
公开(公告)日：2010-11-23
申请号：US12019395
申请日：2008-01-24
申请人： Nitinkumar R. Patel , Yo Chan Son , Silva Hiti , Steven E. Schulz
发明人： Nitinkumar R. Patel , Yo Chan Son , Silva Hiti , Steven E. Schulz
IPC分类号： H02H5/04
CPC分类号： H02H7/0852
摘要： A temperature estimation controller and methods are provided for controlling a torque command to prevent overheating of one or more of a plurality of phases of a permanent magnet motor. The temperature estimation controller includes a low speed temperature estimation module, a transition module and a temperature dependent torque command derater block. The low speed temperature estimation module determines a stator temperature of each of a plurality of phases of the permanent magnet motor in response to first thermal impedances measured for each of the plurality of phases with respect to a thermal neutral. The transition module is coupled to the low speed temperature estimation module and outputs the stator temperature of each of a plurality of phases of the permanent magnet motor as determined by the low speed temperature estimation module when a detected speed of the permanent magnet motor is less than a first predetermined speed. The temperature dependent torque command derater block is coupled to the transition module and derates the torque command in response to the stator temperature of one or more of the plurality of phases.
摘要翻译：提供了一种用于控制转矩指令以防止永磁电动机的多相中的一个或多个相的过热的温度估计控制器和方法。温度估计控制器包括低速温度估计模块，过渡模块和与温度相关的转矩指令减排模块。低速温度估计模块响应于相对于热中性点对多个相中的每一个测量的第一热阻而确定永磁电动机的多相的每个相的定子温度。当所述永磁电动机的检测速度小于所述低速温度估计模块时，所述过渡模块耦合到所述低速温度估计模块，并且输出由所述低速温度估计模块确定的所述永磁电动机的多个相中的每一个的定子温度。第一预定速度。与温度相关的转矩指令转换器模块耦合到转换模块，并响应于多个相位中的一个或多个的定子温度降低转矩指令。

10. 发明申请

US20080272732A1 METHOD AND SYSTEM FOR MOTOR CONTROL WITH DELAY COMPENSATION 有权
标题翻译：具有延迟补偿的电机控制方法与系统
公开(公告)号：US20080272732A1
公开(公告)日：2008-11-06
申请号：US11743718
申请日：2007-05-03
申请人： Steven E. Schulz , Nitinkumar R. Patel , Bonho Bae , Stephen T. West
发明人： Steven E. Schulz , Nitinkumar R. Patel , Bonho Bae , Stephen T. West
IPC分类号： H02P27/04
CPC分类号： H02P23/0004
摘要： Methods and systems are provided for controlling an electric machine via an inverter while compensating for one or more hardware delays. The method includes receiving a control signal, producing a first sampling signal based on the control signal, and adjusting the sampling signal to compensate for a first delay of the one or more hardware delays. The inverter is operable to produce a voltage signal based on the control signal, and the electric machine is operable to produce a current based on the voltage signal. A sampling of the current is performed based on the first sampling signal.
摘要翻译：提供了用于通过反相器控制电机的方法和系统，同时补偿一个或多个硬件延迟。该方法包括接收控制信号，基于控制信号产生第一采样信号，以及调整采样信号以补偿一个或多个硬件延迟的第一延迟。逆变器可操作以基于控制信号产生电压信号，并且电机可操作以基于电压信号产生电流。基于第一采样信号执行电流的采样。

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