公开(公告)号：US20160169974A1

公开(公告)日：2016-06-16

申请号：US14908170

申请日：2014-07-09

Applicant: DANFOSS POWER ELECTRONICS A/S

Inventor： Mark A. Bertolasi ,  Michael Harke ,  Charles J. Romenesko ,  Shaohua Suo

IPC: G01R31/34

CPC classification number: G01R31/34

Abstract: A method of determining electromagnetic characteristics of an asynchronous motor system is described. A motor system model is presented including a stator resistance, a transient inductance, a magnetizing inductance and a rotor resistance. A DC sequence is used to determine the stator resistance, a voltage pulse is used to determine the transient inductance, a binary injection frequency search algorithm is used to determine the magnetizing inductance, and an AC sine wave at slip frequency with DC offset is used to determine the rotor resistance.

Abstract translation: 描述了一种确定异步电动机系统的电磁特性的方法。 提出了一种电机系统模型，包括定子电阻，瞬变电感，励磁电感和转子电阻。 使用DC序列来确定定子电阻，使用电压脉冲来确定瞬态电感，使用二进制注入频率搜索算法来确定励磁电感，并且使用具有直流偏移的滑差频率处的交流正弦波 确定转子电阻。

公开(公告)号：US10241152B2

公开(公告)日：2019-03-26

申请号：US14908170

申请日：2014-07-09

Applicant: Danfoss Power Electronics A/S

Inventor： Mark A. Bertolasi ,  Michael Harke ,  Charles J. Romenesko ,  Shaohua Suo

IPC: G01R31/34

Abstract: A method of determining electromagnetic characteristics of an asynchronous motor system is described. A motor system model is presented including a stator resistance, a transient inductance, a magnetizing inductance and a rotor resistance. A DC sequence is used to determine the stator resistance, a voltage pulse is used to determine the transient inductance, a binary injection frequency search algorithm is used to determine the magnetizing inductance, and an AC sine wave at slip frequency with DC offset is used to determine the rotor resistance.

公开(公告)号：US20150177328A1

公开(公告)日：2015-06-25

申请号：US14420004

申请日：2013-07-11

Applicant: Danfoss Power Electronics A/S

Inventor： Michael Harke

IPC: G01R31/34 ,  G01R31/28 ,  G01R19/00 ,  G01R27/14 ,  G01R27/26

CPC classification number: G01R31/343 ,  G01R19/0084 ,  G01R19/0092 ,  G01R27/14 ,  G01R27/2611 ,  G01R31/2837 ,  H02P23/14 ,  H02P2207/01

Abstract: A method of determining electromagnetic characteristics of an asynchronous motor system is described. A DC sequence is applied comprising DC vectors applied to different phases of the motor in tum. An AC sequence is also applied to different phases of the motor, the AC sequence including pulses having different DC offsets being applied to different phases of the motor. The DC and AC pulses are applied such that any torque generated is minimized. The data obtained is used to calculate the stator and rotor resistances of the motor, the non-linearity of an inverter of the motor system and the nominal stator transient and magnetizing inductances of the motor.

Abstract translation: 描述了一种确定异步电动机系统的电磁特性的方法。 施加DC序列，其包括施加到电动机的不同相位的DC矢量。 AC序列也适用于电动机的不同相，包括具有不同DC偏移的脉冲的AC序列被施加到电动机的不同相。 施加DC和AC脉冲，使得产生的任何扭矩被最小化。 获得的数据用于计算电机的定子和转子电阻，电机系统的逆变器的非线性以及电动机的额定定子瞬变和励磁电感。