公开(公告)号：US20080303475A1

公开(公告)日：2008-12-11

申请号：US11759266

申请日：2007-06-07

Applicant: Nitinkumar R. Patel ,  Brian A. Welchko ,  Bonho Bae ,  Steven E. Schulz

Inventor： Nitinkumar R. Patel ,  Brian A. Welchko ,  Bonho Bae ,  Steven E. Schulz

IPC: G05B19/042 ,  G05D23/19

CPC classification number: H02P21/141 ,  H02P21/20

Abstract: Methods and systems are provided for controlling permanent magnet machines. The method includes determining a maximum torque of the PM machine based on an error between a commanded d-axis flux and an estimated d-axis flux of the PM machine, and adjusting a torque command based on the maximum torque. The error associated with a variation between a current temperature and a nominal temperature of the PM machine.

Abstract translation: 提供用于控制永磁机的方法和系统。 该方法包括基于指令的d轴磁通与PM机的估计d轴磁通之间的误差来确定PM机的最大转矩，以及基于最大转矩来调整转矩指令。 与PM机的当前温度和标称温度之间的变化相关的误差。

公开(公告)号：US20080298785A1

公开(公告)日：2008-12-04

申请号：US11756349

申请日：2007-05-31

Applicant: Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A. Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

Inventor： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A. Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

IPC: H02P7/285

CPC classification number: H02P27/08 ,  B60L2270/142 ,  H02M1/14 ,  Y02T10/642

Abstract: Methods and systems for operating a motor coupled to an electrical bus in a vehicle are provided. Selected resonant frequencies of the electrical bus are determined. The selected resonant frequencies include a low resonant frequency and a high resonant frequency. Power is provided to the motor through at least one switch operating at a switching frequency. The switching frequency is controlled as a function of a rate of operation of the motor. The function is characterized by one of a first substantially linear portion having a first slope when the switching frequency is less than or equal to a selected switching frequency and a second substantially linear portion having a second slope if the switching frequency is greater than the selected frequency, the selected switching frequency being greater than the low resonant frequency and a substantially linear portion having a y-intercept being greater than the low resonant frequency.

Abstract translation: 提供了用于操作耦合到车辆中的电气总线的马达的方法和系统。 确定电气总线的选定谐振频率。 所选择的谐振频率包括低谐振频率和高谐振频率。 通过至少一个以开关频率工作的开关将电力提供给电动机。 开关频率根据电机的运行速度进行控制。 该功能的特征在于当开关频率小于或等于所选择的开关频率时具有第一斜率的第一基本线性部分中的一个以及具有第二斜率的第二基本线性部分，如果开关频率大于所选择的频率 ，所选择的开关频率大于低谐振频率，并且具有大于低谐振频率的y截距的基本线性部分。

公开(公告)号：US07459874B2

公开(公告)日：2008-12-02

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: G05B5/01

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：US07449859B2

公开(公告)日：2008-11-11

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: H02P23/00

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：US20080260362A1

公开(公告)日：2008-10-23

申请号：US11738854

申请日：2007-04-23

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

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

IPC: H02P7/08

CPC classification number: B60L3/12 ,  H02P23/04 ,  H02P27/08 ,  Y02T10/642

Abstract: A method and system for operating a motor are provided. Power is provided to the motor through at least one switch operating at a first switching frequency. A pulse ratio of the motor is calculated based on the first switching frequency. The at least one switch is operated at a second switching frequency if the calculated pulse ratio is less than a first pulse ratio value and greater than a second pulse ratio value.

Abstract translation: 提供了一种用于操作电动机的方法和系统。 通过至少一个以第一开关频率工作的开关将电力提供给电动机。 基于第一开关频率计算电动机的脉冲比。 如果所计算的脉冲比小于第一脉冲比值且大于第二脉冲比值，则至少一个开关以第二开关频率工作。

公开(公告)号：US20080224649A1

公开(公告)日：2008-09-18

申请号：US11685729

申请日：2007-03-13

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

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

IPC: H02P27/04

CPC classification number: H02P21/22

Abstract: A control architecture for an electrical inverter includes a command limiter that is realized as a circular voltage limiter. The command limiter includes a Cartesian-to-polar converter coupled to a command source such as a synchronous frame current regulator. The Cartesian-to-polar converter provides magnitude and phase components for d-q command voltages. The command limiter further includes a magnitude limiter that limits the magnitude component to the maximum fundamental voltage component of the inverter, and a polar-to-Cartesian converter that converts the limited magnitude component and the phase component into modified d-q command voltages.

Abstract translation: 用于逆变器的控制结构包括实现为圆形电压限制器的指令限制器。 命令限制器包括耦合到诸如同步帧电流调节器的命令源的笛卡尔到极化转换器。 笛卡尔到极化转换器为d-q指令电压提供幅度和相位分量。 命令限制器还包括限幅器，其将幅度分量限制到逆变器的最大基波电压分量;以及极限到笛卡尔转换器，其将受限幅度分量和相位分量转换为修改的d-q指令电压。

公开(公告)号：US07282886B1

公开(公告)日：2007-10-16

申请号：US11462596

申请日：2006-08-04

Applicant: Nitinkumar R. Patel ,  Bon-Ho Bae ,  James M. Nagashima ,  Tae-Suk Kwon ,  Seung Ki Sul

Inventor： Nitinkumar R. Patel ,  Bon-Ho Bae ,  James M. Nagashima ,  Tae-Suk Kwon ,  Seung Ki Sul

IPC: H02P1/24 ,  H02P5/28 ,  H02P7/00

CPC classification number: B60L15/025 ,  Y02T10/643

Abstract: Methods and system are provided for controlling permanent magnet motor drive systems. The method comprises the steps of adjusting a first current command in response to a first voltage error to produce a first adjusted current, adjusting a second current command in response to a second voltage error to produce a second adjusted current, limiting each of the first and second adjusted current below a maximum current, converting the first adjusted current to a first potential, converting the second current command to a second potential, and supplying the first and second potentials to the permanent magnet motor. The first voltage error is derived from the second current command, and the second voltage error is derived from the first current command.

Abstract translation: 提供用于控制永磁电机驱动系统的方法和系统。 该方法包括以下步骤：响应于第一电压误差调整第一电流指令以产生第一调整电流，响应于第二电压误差调整第二电流指令以产生第二调整电流，限制第一和第 第二调整电流低于最大电流，将第一调整电流转换为第一电位，将第二电流指令转换为第二电位，并将第一和第二电位提供给永磁电动机。 从第二电流指令导出第一电压误差，从第一电流指令导出第二电压误差。

公开(公告)号：US06989641B2

公开(公告)日：2006-01-24

申请号：US10452817

申请日：2003-06-02

Applicant: Steven E. Schulz ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Yu-Seok Jeong ,  Seung Ki Sul

Inventor： Steven E. Schulz ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Yu-Seok Jeong ,  Seung Ki Sul

IPC: B60L3/00

CPC classification number: G05B19/4062 ,  G05B2219/42329 ,  H02P29/032

Abstract: A method for controlling an electric machine having current sensors for less than every phase of the electric machine includes operating a processor to perform a test to preliminarily determine whether a fault exists in one or more of the current sensors and a test to finally determine that the fault exists in the one or more current sensors. The method further includes operating the processor to utilize a state observer of the electric machine to estimate states of the electric machine, wherein the state observer is provided state input measurements from each non-faulty current sensor, if any. Measurements from the current sensor or sensors determined to be faulty are disregarded. The processor controls the electric machine utilizing results from the state observer.

Abstract translation: 用于控制具有小于电机每相的电流传感器的电机的方法包括操作处理器以执行测试，以初步确定在一个或多个电流传感器中是否存在故障，并且进行测试以最终确定 一个或多个电流传感器存在故障。 该方法还包括操作处理器以利用电机的状态观察器来估计电机的状态，其中状态观察器被提供来自每个非故障电流传感器的状态输入测量值（如果有的话）。 来自当前传感器或被确定为有故障的传感器的测量被忽略。 处理器利用来自状态观测器的结果控制电机。

公开(公告)号：US06924617B2

公开(公告)日：2005-08-02

申请号：US10601726

申请日：2003-06-23

Applicant: Steven E. Schulz ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Seung Ki Sul ,  Bon-Ho Bae

Inventor： Steven E. Schulz ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Seung Ki Sul ,  Bon-Ho Bae

IPC: H02P6/18 ,  H02P21/00 ,  H02P1/46 ,  G05B11/42 ,  H02P1/18

CPC classification number: H02P6/18 ,  H02P6/181 ,  H02P21/00 ,  H02P21/0089 ,  H02P21/12 ,  H02P21/28 ,  H02P2203/05 ,  H02P2207/05

Abstract: A control system for an electric motor having a stator and rotor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a low speed control block to estimate the rotor angular position using stator current components operating in the controller, a high speed control block to estimate the rotor angular position using stator current components and stator flux position operating in the controller, a transition switch in the controller to vary operation between the low speed control block and the high speed control block, and where the inverter is controlled by six step operation.

Abstract translation: 一种具有定子和转子的电动机的控制系统，该定子和转子包括用于向电动机供电的逆变器，用于控制逆变器的控制器，使用在控制器中操作的定子电流分量来估计转子角位置的低速控制块， 高速控制块，用于使用定子电流分量和在控制器中操作的定子磁通位置来估计转子角位置，控制器中的转换开关改变低速控制块和高速控制块之间的操作，并且其中变频器 由六步操作控制。