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。