New antiwindup PI controller for variable-speed motor drives
Hwi-Beon Shin
Dept. of Electr. Eng., Gyeongsang Nat. Univ.;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Jun 1998
Volume: 45,
Issue: 3
On page(s): 445-450
ISSN: 0278-0046
References Cited: 11
CODEN: ITIED6
INSPEC Accession Number: 5933768
Digital Object Identifier: 10.1109/41.679002
Current Version Published: 2002-08-06
Abstract
The windup phenomenon appears and results in performance
degradation when the proportional-integral (PI) controller output is
saturated. A new antiwindup PI controller is proposed to improve the
control performance of variable-speed motor drives, and it is
experimentally applied to the speed control of a vector-controlled
induction motor driven by a pulsewidth modulated (PWM) voltage-source
inverter (VSI). The integral state is separately controlled,
corresponding to whether the PI controller output is saturated or not.
The experimental results show that the speed response has much improved
performance, such as small overshoot and fast settling time, over the
conventional antiwindup technique. Although the operating speed command
is changed, similar control performance can be obtained by using the PI
gains selected in the linear region
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