公开(公告)号：US20080197796A1

公开(公告)日：2008-08-21

申请号：US11676539

申请日：2007-02-20

Applicant: Bon-Ho Bae ,  Steven E. Schulz ,  Nitinkumar R. Patel

Inventor： Bon-Ho Bae ,  Steven E. Schulz ,  Nitinkumar R. Patel

IPC: H02P7/00

CPC classification number: B60L11/1861 ,  B60L15/025 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7258

Abstract: Methods, apparatus, and systems are provided for regulating the operation of a drive system within a battery voltage and power range. The apparatus includes a PI regulator producing a signal for regulating a torque output of the drive system based on a DC voltage source limit and/or power limit, a converter normalizing the signal from the PI regulator to produce a new torque limit, and a switch selecting either the new torque limit or an available torque limit of the drive system. The PI regulator includes an integrator having an initial value based on the torque output of the drive system and a copper loss term.

Abstract translation: 提供了用于调节电池电压和功率范围内的驱动系统的操作的方法，装置和系统。 该装置包括PI调节器，其产生用于基于直流电压源极限和/或功率限制来调节驱动系统的转矩输出的信号，转换器对来自PI调节器的信号进行归一化以产生新的转矩极限，以及开关 选择新的转矩限制或驱动系统的可用转矩极限。 PI调节器包括具有基于驱动系统的转矩输出的初始值和铜损失项的积分器。

公开(公告)号：US07088077B2

公开(公告)日：2006-08-08

申请号：US10984178

申请日：2004-11-09

Applicant: James M. Nagashima ,  Khwaja M. Rahman ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  Terence G. Ward ,  Stanley K. Fujii

Inventor： James M. Nagashima ,  Khwaja M. Rahman ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  Terence G. Ward ,  Stanley K. Fujii

IPC: H02P9/00 ,  H02P7/00

CPC classification number: H02P21/04 ,  H02P21/0089 ,  H02P21/22 ,  H02P29/02

Abstract: A method of controlling an IPM machine having a salient rotor. Stator terminal signals are measured and rotated to obtain synchronous reference frame current signals. A rotor position is estimated based on an impedance generated using the rotor and included in the current signals. The estimated rotor position is used to control the machine. An alternator-starter system in which this method is used can provide high cranking torque and generation power over a wide speed range while providing operational efficiency.

Abstract translation: 一种控制具有显着转子的IPM机的方法。 定子端子信号被测量和旋转以获得同步参考帧电流信号。 基于使用转子产生的并且包括在电流信号中的阻抗来估计转子位置。 估计的转子位置用于控制机器。 使用该方法的交流发电机 - 起动器系统可以在宽的速度范围内提供高起动转矩和发电功率，同时提供操作效率。

公开(公告)号：US08634976B2

公开(公告)日：2014-01-21

申请号：US12715081

申请日：2010-03-01

Applicant: Brian A. Welchko ,  Nitinkumar R. Patel ,  Leah Dunbar ,  William R. Cawthorne ,  Steven E. Schulz

Inventor： Brian A. Welchko ,  Nitinkumar R. Patel ,  Leah Dunbar ,  William R. Cawthorne ,  Steven E. Schulz

IPC: B60L9/00

CPC classification number: B60L15/20 ,  H02P29/032 ,  H02P29/60 ,  Y02T10/645 ,  Y02T10/7275 ,  Y10T477/23

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08487575B2

公开(公告)日：2013-07-16

申请号：US12568002

申请日：2009-09-28

Applicant: Chia-Chou Yeh ,  Nitinkumar R. Patel ,  Yo Chan Son ,  Steven E. Schulz

Inventor： Chia-Chou Yeh ,  Nitinkumar R. Patel ,  Yo Chan Son ,  Steven E. Schulz

IPC: G05D23/00

CPC classification number: H02P6/08 ,  G01R31/343 ,  H02P29/664

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08339081B2

公开(公告)日：2012-12-25

申请号：US12558291

申请日：2009-09-11

Applicant: Nitinkumar R. Patel ,  Yo Chan Son

Inventor： Nitinkumar R. Patel ,  Yo Chan Son

IPC: H02P6/18

CPC classification number: H02P6/185 ,  H02P21/04 ,  H02P21/24

Abstract: Methods and apparatus are provided for startup of a permanent magnet alternating current (AC) motor. The method comprises the steps of detecting startup of the permanent magnet AC motor; detecting a mechanical oscillation of the permanent magnet AC motor when startup of the permanent magnet AC motor is detected; and, in response to detection of the mechanical oscillation of the permanent magnet AC motor when startup is detected, suppressing the mechanical oscillation of the permanent magnet AC motor.

Abstract translation: 提供用于启动永磁交流（AC）电动机的方法和装置。 该方法包括以下步骤：检测永磁体AC电动机的启动; 在检测到永久磁铁AC电动机的启动时检测永久磁铁AC电动机的机械振动; 并且响应于检测到启动时永久磁铁AC电动机的机械振动的检测，抑制了永久磁铁AC电动机的机械振动。

公开(公告)号：US20090189561A1

公开(公告)日：2009-07-30

申请号：US12019395

申请日：2008-01-24

Applicant: NITINKUMAR R. PATEL ,  YO CHAN SON ,  SILVA HITI ,  STEVEN E. SCHULZ

Inventor： NITINKUMAR R. PATEL ,  YO CHAN SON ,  SILVA HITI ,  STEVEN E. SCHULZ

IPC: H02P23/14 ,  H02K9/00 ,  H02K11/00

CPC classification number: H02H7/0852

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090140676A1

公开(公告)日：2009-06-04

申请号：US11947501

申请日：2007-11-29

Applicant: YO CHAN SON ,  NITINKUMAR R. PATEL ,  STEVEN E. SCHULZ

Inventor： YO CHAN SON ,  NITINKUMAR R. PATEL ,  STEVEN E. SCHULZ

IPC: H02P6/18 ,  B60L3/00 ,  G06F19/00 ,  H02P21/08

CPC classification number: H02P21/13 ,  H02P21/141 ,  H02P21/24

Abstract: Methods and systems for controlling an electric motor are provided. A signal comprising at least first and second cycles is provided to the electric motor. A first flux value for the electric motor associated with the first cycle of the signal is calculated. A second flux value for the electric motor associated with the second cycle of the signal is calculated based on the first flux value.

Abstract translation: 提供了用于控制电动机的方法和系统。 包括至少第一和第二循环的信号被提供给电动机。 计算与信号的第一周期相关的电动机的第一通量值。 基于第一通量值计算与信号的第二周期相关联的电动机的第二通量值。

公开(公告)号：US20080197800A1

公开(公告)日：2008-08-21

申请号：US11676527

申请日：2007-02-20

Applicant: Bonho Bae ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  Silva Hiti

Inventor： Bonho Bae ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  Silva Hiti

IPC: H02P27/04

CPC classification number: B60L15/025 ,  B60L11/1803 ,  B60L15/20 ,  B60L2210/20 ,  B60L2220/14 ,  H02P21/04 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/725 ,  Y02T10/7275

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07211984B2

公开(公告)日：2007-05-01

申请号：US10984269

申请日：2004-11-09

Applicant: Nitinkumar R. Patel ,  Steven E. Schulz ,  Thomas P. O'Meara

Inventor： Nitinkumar R. Patel ,  Steven E. Schulz ,  Thomas P. O'Meara

IPC: H02P21/14

CPC classification number: H02P6/20 ,  F02N11/04 ,  F02N11/0859 ,  F02N2200/041 ,  H02P1/46 ,  H02P21/34

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06979968B2

公开(公告)日：2005-12-27

申请号：US10676529

申请日：2003-10-01

Applicant: James M. Nagashima ,  Thomas P. O'Meara ,  Nitinkumar R. Patel ,  Steven E. Schulz

Inventor： James M. Nagashima ,  Thomas P. O'Meara ,  Nitinkumar R. Patel ,  Steven E. Schulz

IPC: H02P3/00 ,  H02P5/00 ,  H02P23/00

CPC classification number: H02P23/0004

Abstract: 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.

Abstract translation: 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。