Sensorless speed control of nonsalient permanent-magnet synchronous motor using rotor-position-tracking PI controller

This paper presents a new velocity estimation strategy of a nonsalient permanent-magnet synchronous motor (PMSM) drive without a high-frequency signal injection or special pulsewidth-modulation (PWM) pattern. This approach is based on the d-axis current regulator output voltage of the drive system t...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2006-04, Vol.53 (2), p.399-405
Main Authors: Seok, Jul-Ki, Lee, Jong-Kun, Lee, Dong-Choon
Format: Article
Language:English
Subjects:
Bandwidth
Control equipment
Control systems
Controllers
Magnetic variables control
Motors
nonsalient permanent-magnet synchronous motor (PMSM) drive
Pi control
Polyimide resins
Position errors
Proportional control
Pulse duration modulation
Pulse width modulation
rotor-position-tracking proportional-integral (PI) controller
Rotors
Sensorless control
Studies
Synchronous motors
Velocity control
velocity estimation strategy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents a new velocity estimation strategy of a nonsalient permanent-magnet synchronous motor (PMSM) drive without a high-frequency signal injection or special pulsewidth-modulation (PWM) pattern. This approach is based on the d-axis current regulator output voltage of the drive system that has the information of rotor position error. Rotor velocity can be estimated through a rotor-position-tracking proportional-integral (PI) controller that controls the position error to zero. For zero and low-speed operation, the PI controller gains of rotor position tracking controller have a variable structure according to the estimated rotor velocity. In order to boost the bandwidth of the PI controller around zero speed, a loop recovery technique is applied to the control system. The proposed method only requires the flux linkage of the permanent magnet and is insensitive to parameter estimation error and variation. The designers can easily determine the possible operating range with a desired bandwidth and perform vector control even at low speeds. The experimental results show the satisfactory operation of the proposed sensorless algorithm under rated load conditions.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2006.870728