TY - JOUR
T1 - Fast Speed Control of AC Machines Without the Proportional-Integral Controller
T2 - Using an Extended High-Gain State Observer
AU - Wang, Fengxiang
AU - Wang, Junxiao
AU - Kennel, Ralph M.
AU - Rodríguez, José
N1 - Funding Information:
This work was supported in part by the National Natural Science Foundation of China under Grants 51877207, 61803335, and U1709213, in part by the CONICYT-Basal Project FB0008, and in part by the Fondecyt Project 1170167.
Funding Information:
Manuscript received May 24, 2018; revised July 17, 2018 and September 30, 2018; accepted December 20, 2018. Date of publication December 27, 2018; date of current version June 10, 2019. This work was supported in part by the National Natural Science Foundation of China under Grants 51877207, 61803335, and U1709213, in part by the CONICYT-Basal Project FB0008, and in part by the Fondecyt Project 1170167. Recommended for publication by Associate Editor B. Fahimi. (Corresponding author: Junxiao Wang.) F. Wang is with Quanzhou Institute of Equipment Manufacturing, Haixi Institutes, Chinese Academy of Sciences, Jinjiang 362201, China (e-mail:,fengxiang. [email protected]).
Publisher Copyright:
© 1986-2012 IEEE.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - As cascaded proportional-integral controllers involve complicated tuning work, many efforts have been focused on direct controllers. Direct torque control and predictive torque control are both feasible solutions. However, bigger ripples or weighting factor designs are not easily solved. In this paper, a direct current controller that uses an extended high-gain state observer is proposed. The integral controller is removed from the system by using a disturbance estimation technique, which improves the system's performance with a variety of loads. A direct current controller without weighting factors is proposed as the inner controller. Unlike existing direct control methods, all phase currents are considered equally in the controller, which ensures a high current control quality. The simulation and experimental results verify that the proposed method performs well both in steady and transient states.
AB - As cascaded proportional-integral controllers involve complicated tuning work, many efforts have been focused on direct controllers. Direct torque control and predictive torque control are both feasible solutions. However, bigger ripples or weighting factor designs are not easily solved. In this paper, a direct current controller that uses an extended high-gain state observer is proposed. The integral controller is removed from the system by using a disturbance estimation technique, which improves the system's performance with a variety of loads. A direct current controller without weighting factors is proposed as the inner controller. Unlike existing direct control methods, all phase currents are considered equally in the controller, which ensures a high current control quality. The simulation and experimental results verify that the proposed method performs well both in steady and transient states.
KW - AC machines
KW - fast speed control
KW - state observer
UR - http://www.scopus.com/inward/record.url?scp=85059255659&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2018.2889862
DO - 10.1109/TPEL.2018.2889862
M3 - Article
AN - SCOPUS:85059255659
VL - 34
SP - 9006
EP - 9015
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
IS - 9
M1 - 8590795
ER -