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

Content Provider	IEEE Xplore Digital Library
Author	Jong-Kun Lee Jul-Ki Seok Dong-Choon Lee
Copyright Year	2004
Description	Author affiliation: Electr. Eng. & Comput. Sci., Yeungnam Univ., Kyungbuk, South Korea (Jong-Kun Lee; Jul-Ki Seok; Dong-Choon Lee)
Abstract	This paper presents a new velocity estimation strategy of a nonsalient permanent magnet synchronous motor (PMSM) drive without high frequency signal injection or special 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. The rotor velocity can be estimated through a rotor position tracking PI controller that controls the position error to zero. For zero and low speed operation, PI gain of rotor position tracking controller has a variable structure according to the estimated rotor velocity. Then, in zero speed, the rotor position and velocity has a sluggish dynamics because the varying gains are very low in this region. In order to boost the bandwidth of PI controller in zero speed, a loop recovery technique is applied to the control system. The experimental results show the satisfactory operation of the proposed sensorless algorithm under load conditions.
Sponsorship	IEEE Power Electon. Soc
Starting Page	4024
Ending Page	4029
File Size	424586
Page Count	6
File Format	PDF
ISBN	0780383990
ISSN	02759306
DOI	10.1109/PESC.2004.1355187
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-20
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Velocity control Permanent magnet motors Rotors Sensorless control Frequency estimation Pulse width modulation Control systems Regulators Voltage Magnetic variables control
Content Type	Text
Resource Type	Article

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