Validation of stability for an induction machine drive using power iterations

Sponsors: 16th Triennial World Congress of International; Federation of Automatic Control, IFAC 2005. QC 20120112
This work is an extension of the paper (Mosskull et al., 2003), in which the modelling, identification and stability of an nonlinear induction machine drive is studied. The validation of the stability margins of the system is refined by an improved estimate of the induced L2 loop gain of the system. This is done with a procedure called power iterations where input sequences suitable for estimating the gain are generated iteratively through experiments on the system. The power iterations result in higher gain estimates compared to the experiments previously presented. This implies that more accurate estimates are obtained as, in general, only lower bounds can be obtained as estimates for the gain. The new gain estimates are well below one, which suggests that the feedback system is stable. The experiments are performed on an industrial hardware/software simulation platform. in this paper we also discuss the power iterations from a more general point of view. The usefulness of the method for gain estimation of nonlinear systems is illustrated through simulation examples. The basic principles of the method are provided.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Reglerteknik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering hsv//eng
Drives
Experimental validation
Induction machines
Nonlinear systems
Power method
Stability analysis
Basic principles
Experimental validations
Feedback systems
Gain estimation
Hardware/software
Induction machine drive
Input sequence
Loop gains
Lower bounds
Simulation example
Simulation platform
Stability margins
Automation
Control
Estimation
Experiments
System stability
SRA - ICT
SRA - Informations- och kommunikationsteknik

Mosskull, HenrikKTH,Reglerteknik(Swepub:kth)u1i48z4w (författare)
Hjalmarsson, Håkan,1962-KTH,Reglerteknik,System Identification Group(Swepub:kth)u10a8l40 (författare)
Wahlberg, Bo,1959-KTH,Reglerteknik,System Identification Group(Swepub:kth)u18c1tfa (författare)
KTHReglerteknik (creator_code:org_t)

Ingår i:Proceedings of the 16th IFAC World Congress, 2005Prague, s. 892-8979783902661753

Av författaren/redakt...: Barenthin, Märta; Mosskull, Henrik; Hjalmarsson, Håk ...; Wahlberg, Bo, 19 ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Elektroteknik oc ...; och Reglerteknik

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