Study on Extend Kalman Filter at low speed in Sensorless PMSM Drives

被引：14
|
作者：
Gu Shan-Mao [1 ]
He Feng-You [1 ]
Zhang Hui [1 ]
机构：
[1] China Univ Min & Technol, Dept Elect Engn, Xuzhou, Peoples R China
来源：
ICECT: 2009 INTERNATIONAL CONFERENCE ON ELECTRONIC COMPUTER TECHNOLOGY, PROCEEDINGS | 2009年
关键词：
PMSM; Sensorless control; Extended Kalman Filter; DC bus voltage; Performance at low speed;
D O I：
10.1109/ICECT.2009.17
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The application of an Extended Kalman Filter(EKF) as nonlinear speed and position observer in PMSM drives has been a mature research project. However, one significant problem still unsolved is the weakly performance at low speed of PMSM drive system that yield to the best estimation performance on high speed range(> 5Hz). This paper proposes a novel method - Adjustable DC bus voltage, for low speed EKF sensorless control of permanent magnet synchronous motor (PMSM)drives. The findings from the experiment that the better performance at low speed (> 2Hz) by adjusting the DC Bus voltage according to the system reference speed are also presented. Simulation and Experimental results are given to confirm the effectiveness of the proposed method.
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页码：311 / 316
页数：6
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