公开(公告)号：US20160087568A1

公开(公告)日：2016-03-24

申请号：US14721786

申请日：2015-05-26

Applicant: Texas Instruments Incorporated

Inventor： ERIC JAMES THOMAS ,  DAVID PATRICK MAGEE

IPC: H02P21/14 ,  H02P21/00

CPC classification number: H02P21/18 ,  H02P21/24 ,  H02P25/03 ,  H02P27/08

Abstract: A method of determining angular position (A) of a rotor of an N-phase permanent magnet motor (PMM). A processor having an associated stored angular position determination (APD) algorithm is programmed to implement the algorithm to cause an associated motor controller to execute steps including forcing one vector at a time a phase vector set of current or voltage vectors to stator terminals of windings for the N-phases a positive and negative magnitude vector, wherein the vector magnitude is sufficiently small to not move the rotor, and a time duration for the forcing current or voltage vectors is essentially constant. The resulting stator current or voltage levels are measured for each current or voltage vector. An N-dimension current vector or voltage vector is generated from superposition of the resulting stator current levels or resulting stator voltage levels. The N-dimension current vector or voltage vector is used to determine angular position.

Abstract translation: 一种确定N相永磁电动机（PMM）的转子的角位置（A）的方法。 具有相关联的存储的角位置确定（APD）算法的处理器被编程为实现该算法以使相关联的电动机控制器执行包括一次强制一个向量的一个向量的电流或电压矢量的相位矢量集合到绕组的定子端子的步骤 N相是正和负幅度矢量，其中矢量幅度足够小以至不移动转子，并且强制电流或电压矢量的持续时间基本上是恒定的。 对于每个电流或电压矢量测量得到的定子电流或电压电平。 通过产生的定子电流电平或所得到的定子电压电平的叠加产生N维电流矢量或电压矢量。 使用N维电流矢量或电压矢量来确定角位置。

公开(公告)号：US20160087567A1

公开(公告)日：2016-03-24

申请号：US14721823

申请日：2015-05-26

Applicant: Texas Instruments Incorporated

Inventor： ERIC JAMES THOMAS ,  DAVID PATRICK MAGEE

IPC: H02P21/06

CPC classification number: H02P21/18 ,  H02P21/0025 ,  H02P21/06 ,  H02P21/24 ,  H02P25/03 ,  H02P25/08 ,  H02P27/08

Abstract: A method of normalizing phase measurements for a motor using a normalizing phase measurements (NPM) algorithm that a processor implements to cause a motor controller coupled to stator terminals of the phases to execute forcing a set of input current or voltage vectors (set of input vectors) including repeating the forcing after rotating the rotor through a full mechanical cycle to generate resulting current or voltage samples (resulting samples) of non-normalized phase A and phase B waveforms. The magnitude of the input vectors are sufficiently small to not move the rotor. A maximum value (x_max) and a minimum value (x_min) are determined for each of the non-normalized phase A and phase B waveforms. An offset value and normalization scale factor (NSF) are determined from the max and min values. The offsets and NSFs are applied to the non-normalized phase waveforms to generate normalized phase A and phase B waveforms.

公开(公告)号：US20160087563A1

公开(公告)日：2016-03-24

申请号：US14721716

申请日：2015-05-26

Applicant: Texas Instruments Incorporated

Inventor： DAVID PATRICK MAGEE ,  ERIC JAMES THOMAS

IPC: H02P6/18

CPC classification number: H02P6/182

Abstract: A method of determining the angular position (θ) of a rotor of an N-phase permanent magnet motor (PMM) includes providing a processor having an associated memory, wherein the memory stores an angular position determination (APD) equation or hardware is included implementing the APD equation. The APD equation determines the angular position from N-phase measurements obtained from the stator windings associated with each of the N-phases. A voltage or a current is forced upon the stator terminals of the stator windings for each of the N-phases, a resulting stator current or stator voltage is sensed to provide the N-phase measurements responsive to the forcing of the voltage or current, and the APD equation is used to determine the angular position from the N-phase measurements.

Abstract translation: 确定N相永磁电动机（PMM）的转子的角位置（...）的方法包括提供具有相关联的存储器的处理器，其中存储器存储角位置确定（APD）等式或硬件 实施APD方程。 APD方程确定从与每个N相相关的定子绕组获得的N相测量的角度位置。 对于N相中的每一个，电压或电流被强制到定子绕组的定子端子上，产生的定子电流或定子电压被感测以响应于电压或电流的强制提供N相测量，以及 使用APD方程来确定来自N相测量的角位置。