Parameter sensitivity of MRAC models employed in IFO-controlled AC motor drive

Author

Ribeiro, Luiz Antonio de Souza ; Jacobina, Cursino Brandão ; Lima, Antonio Marcus Nogueira ; Oliveira, Alexandre Cunha

Author_Institution

Dept. of Electr. Eng., Centro Fed. de Educ. Tecnol., Maranhao, Brazil

Volume

44

Issue

4

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

536

Lastpage

545

Abstract

An investigation of the parameter sensitivities of the d-axis voltage, q-axis voltage, and the reactive power models used in model reference adaptive control (MRAC) strategy for tuning the indirect field-oriented (IFO) controller is presented. These reference models are derived from the dynamic model of the machine under the assumption that the IFO control conditions are valid. In this paper, the machine has been considered to operate under variable speed and load conditions. To improve the robustness of the MRAC strategy, a cascade parameter estimation technique has been used to track the variations in r_s and σl_s. The experimental results obtained with the proposed estimation technique, as well as with the MRAC strategy, are presented

Keywords

AC motor drives; control system analysis; control system synthesis; machine control; machine testing; machine theory; model reference adaptive control systems; parameter estimation; robust control; AC motor drive; cascade parameter estimation technique; control performance; control simulation; dynamic model; experimental results; indirect field-oriented control; model reference adaptive control models; parameter sensitivities; reference models; robustness; AC motors; Adaptive control; Control systems; Induction machines; Jacobian matrices; Parameter estimation; Reactive power control; Robustness; Rotors; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.605631

Filename

605631