公开(公告)号：US06388420B1

公开(公告)日：2002-05-14

申请号：US09704593

申请日：2000-11-03

申请人： Patrick Lee Jansen ,  William James Premerlani ,  Luis Jose Garces Rivera

发明人： Patrick Lee Jansen ,  William James Premerlani ,  Luis Jose Garces Rivera

IPC分类号： H02P762

CPC分类号： H02P21/18

摘要： A drive system comprises a rotor position and velocity tracker adapted to decouple fundamental frequency effects of a zero sequence signal of an induction machine from the zero sequence signal and to use a resulting error signal to estimate a position and a velocity of a rotor of the induction machine.

摘要翻译： 驱动系统包括转子位置和速度跟踪器，其适于将感应电机的零序信号的基频影响与零序信号分离，并且使用所得到的误差信号来估计感应转子的位置和速度 机。

公开(公告)号：US06559654B2

公开(公告)日：2003-05-06

申请号：US09681404

申请日：2001-03-29

申请人： Eddy Ying Yin Ho ,  Craig William Moyer ,  Luis Jose Garces Rivera

发明人： Eddy Ying Yin Ho ,  Craig William Moyer ,  Luis Jose Garces Rivera

IPC分类号： G01R2320

CPC分类号： G01R27/2611

摘要： A method and system for determining an inductance value of an inductive element are presented. The method includes energizing the inductive element using an N-pulse AC to DC converter in electrical communication with the inductive element and an AC source. The method further includes determining at each of a plurality of periodic time intervals an inductive element voltage value, an inductive element current value, and an equivalent source phase angle. An Nth harmonic impedance squared value is then determined for the inductive element using the inductive element voltage and current values and the equivalent source phase angles. The inductive element inductance value is then calculated using the Nth harmonic impedance squared value and an AC source frequency value.