公开(公告)号：US20100295500A1

公开(公告)日：2010-11-25

申请号：US12470803

申请日：2009-05-22

Applicant: SIBAPRASAD CHAKRABARTI ,  MENGWEI CAMPBELL

Inventor： SIBAPRASAD CHAKRABARTI ,  MENGWEI CAMPBELL

IPC: H02P23/08

CPC classification number: H02P21/09 ,  H02P21/00 ,  H02P29/032 ,  Y02T10/7258

Abstract: Methods and systems are provided for producing a commanded torque in an electric motor in a vehicle. A method comprises obtaining a torque command, obtaining a speed of the electric motor, and operating the inverter based at least in part on a voltage command that corresponds to minimal current through the electric motor for producing the commanded torque at the instantaneous speed of the electric motor.

Abstract translation: 提供了用于在车辆中的电动机中产生指令扭矩的方法和系统。 一种方法包括获得扭矩指令，获得电动机的速度，以及至少部分地基于对应于通过电动机的最小电流的电压指令来操作逆变器，以产生在电动瞬时速度下的指令转矩 发动机。

公开(公告)号：US20100171456A1

公开(公告)日：2010-07-08

申请号：US12348422

申请日：2009-01-05

Applicant: SIBAPRASAD CHAKRABARTI ,  RAJKUMAR COPPARAPU

Inventor： SIBAPRASAD CHAKRABARTI ,  RAJKUMAR COPPARAPU

IPC: H02P6/14

CPC classification number: H02M7/53875 ,  H02M7/5395 ,  H02M2001/327

Abstract: Methods and apparatus are provided for operation of a voltage source inverter. A method of operating a voltage source inverter having an output with multiple voltage phases having a DC voltage level, the method comprising sensing a low output frequency condition; determining a DC voltage offset responsive to the low output frequency condition; and applying the DC voltage offset when operating the voltage source inverter resulting in a change to the DC voltage level of the multiple voltage phases.

Abstract translation: 提供了用于电压源逆变器的操作的方法和装置。 一种操作具有具有DC电压电平的多个电压相位的输出的电压源逆变器的方法，所述方法包括检测低输出频率条件; 响应于所述低输出频率条件确定DC电压偏移; 以及在操作所述电压源逆变器时施加所述DC电压偏移，从而导致所述多个电压相位的直流电压电平的变化。

公开(公告)号：US20100295492A1

公开(公告)日：2010-11-25

申请号：US12470777

申请日：2009-05-22

Applicant: SIBAPRASAD CHAKRABARTI ,  WEI D. WANG

Inventor： SIBAPRASAD CHAKRABARTI ,  WEI D. WANG

IPC: H02H7/08

CPC classification number: B60L15/20 ,  B60L3/0038 ,  B60L3/0061 ,  B60L3/0092 ,  B60L11/1803 ,  B60L15/025 ,  G01R19/0092 ,  G01R31/343 ,  G01R35/00 ,  H02M2001/0009 ,  H02P21/00 ,  H02P29/0241 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/72 ,  Y02T10/7275

Abstract: Methods and systems are provided for controlling an electric motor in a vehicle. A method comprises measuring current associated with a first phase of the electric motor using a first current sensor resulting in a measured first phase current and measuring current associated with a second phase of the electric motor using a second current sensor resulting in a measured second phase current. The method further comprises determining a target value for the measured second phase current based on a value corresponding to a peak current for the first phase and identifying a current sensor error based on a difference between the measured second phase current and the target value.

Abstract translation: 提供了用于控制车辆中的电动机的方法和系统。 一种方法包括使用第一电流传感器测量与电动机的第一相相关的电流，所述第一电流传感器产生测量的第一相电流，并且使用第二电流传感器测量与电动机的第二相相关的电流，得到测量的第二相电流 。 该方法还包括基于与第一相的峰值电流相对应的值来确定所测量的第二相电流的目标值，并基于所测量的第二相电流和目标值之间的差来识别电流传感器误差。

公开(公告)号：US20090134828A1

公开(公告)日：2009-05-28

申请号：US11945368

申请日：2007-11-27

Applicant: SIBAPRASAD CHAKRABARTI ,  BRIAN A. WELCHKO ,  SILVA HITI

Inventor： SIBAPRASAD CHAKRABARTI ,  BRIAN A. WELCHKO ,  SILVA HITI

IPC: H02P4/00 ,  H02P27/06 ,  B60L11/18

CPC classification number: H02P27/08 ,  H02P2209/03 ,  Y02T10/7258

Abstract: Methods and systems are provided for operating an electric motor having at least one winding coupled to first and second power supplies. A torque command for the electric motor is received. A present power reserve for the first and second power supplies is determined based at least in part on the torque command. An operating voltage for the second power supply is determined based on the present power reserve. The operating voltage for the second power supply is applied to the at least one winding. The application of the operating voltage allowing the present power reserve to flow between the first and second power supplies and the motor.

Abstract translation: 提供了用于操作具有耦合到第一和第二电源的至少一个绕组的电动机的方法和系统。 接收到电动机的转矩指令。 至少部分地基于转矩指令来确定用于第一和第二电源的当前功率储备。 基于当前动力储备来确定第二电源的工作电压。 第二电源的工作电压被施加到至少一个绕组。 施加允许当前功率储备在第一和第二电源和电动机之间流动的工作电压。