公开(公告)号：US20110169438A1

公开(公告)日：2011-07-14

申请号：US12687496

申请日：2010-01-14

申请人： S.M. N. HASAN ,  BRIAN A. WELCHKO ,  DAVID P. TASKY ,  JUSTIN O. NIELSEN ,  SILVA HITI

发明人： S.M. N. HASAN ,  BRIAN A. WELCHKO ,  DAVID P. TASKY ,  JUSTIN O. NIELSEN ,  SILVA HITI

IPC分类号： H02P6/18

CPC分类号： H02P21/0003 ,  H02P21/22 ,  H02P27/08

摘要： Methods and systems for controlling an electric motor are provided. The electric motor includes at least one winding. A winding current flowing through the at least one winding is monitored. The winding current has an oscillating component and an offset component. The offset component of the winding current is isolated from the oscillating component of the winding current. The electric motor is controlled based on the offset component of the winding current.

摘要翻译： 提供了用于控制电动机的方法和系统。 电动机包括至少一个绕组。 监测流经至少一个绕组的绕组电流。 绕组电流具有振荡分量和偏移分量。 绕组电流的偏移分量与绕组电流的振荡分量隔离。 基于绕组电流的偏移分量来控制电动机。

公开(公告)号：US20130077194A1

公开(公告)日：2013-03-28

申请号：US13244052

申请日：2011-09-23

申请人： S.M. N. HASAN ,  STEVEN E. SCHULZ ,  DAVID P. TASKY

发明人： S.M. N. HASAN ,  STEVEN E. SCHULZ ,  DAVID P. TASKY

IPC分类号： H02H9/02 ,  H02H7/08 ,  G01R31/34

CPC分类号： H02P29/022 ,  H02H7/00 ,  H02P21/22 ,  H02P29/0243 ,  H02P29/032

摘要： Methods and apparatus are provided for detecting a phase current sensor fault in a multi-phase electrical motor. The method comprises, receiving an input torque command T* and measuring a set of feedback signals of the motor including a phase current Ix for each of the phases of the motor, generating direct and quadrature command phase currents Id*, Iq* for the motor corresponding to a value of the input torque command T*, determining a total command current Is=[(Iq*)2+(Id*)2]½, generating a negative sequence current Ineg, where for three phases Ineg=(⅓)[Ia+(α2)Ib+(α)Ic], where α=ej2π/3, combining Ineg and Is to provide a normalized negative sequence current Inn=Ineg/Is, comparing the normalized negative sequence current Inn to a predetermined threshold value INN* to determine the presence of a phase current sensor fault, and executing a control action when Inn>INN*.

摘要翻译： 提供了用于检测多相电动机中的相电流传感器故障的方法和装置。 该方法包括：接收输入转矩指令T *并测量电动机的一组反馈信号，该电动机的每个相位包括相电流Ix，为电动机产生直接和正交指令相电流Id *，Iq * 对应于输入转矩指令T *的值，确定总指令电流Is = [（Iq *）2+（Id *）2] 1/2，产生负序电流Ineg，其中三相Ineg =（1/3） [Ia +（α2）Ib +（α）Ic]，其中α= ej2＆pgr; / 3，组合Ineg和Is，以提供归一化的负序电流Inn = Ineg / Is，将归一化负序电流Inn与预定阈值INN *确定相电流传感器故障的存在，并在Inn> INN *时执行控制动作。