Automatic nonlinear auto-tuning method for Hammerstein modeling ofelectrical drives
Balestrino, A.
Landi, A.
Ould-Zmirli, M.
Sani, L.
Dipt. di Sistemi Elettrici e Automazione, Pisa Univ.;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Jun 2001
Volume: 48,
Issue: 3
On page(s): 645-655
ISSN: 0278-0046
References Cited: 14
CODEN: ITIED6
INSPEC Accession Number: 6951739
Digital Object Identifier: 10.1109/41.925592
Current Version Published: 2002-08-07
Abstract
Accurate modeling of electrical drives for online testing is a
relevant problem, because of their nonlinear behavior. Efficient
modeling for simulation, performance evaluation, and testing must
consider accurate as well as simple models. This paper proposes the
application of auto-tune methods to identify equivalent Hammerstein
models, where the nonlinear process is approximated by a static
nonlinear element followed by a linear dynamic second or third-order
model. The effectiveness of the presented procedure is first verified by
simulation results, showing that Hammerstein models overcome the
limitations inherent to small-signal linearizations. A standard
implementation of such technique considers a relay adjustment for
attempts in a heuristic way. In this paper, two innovations are
proposed: the relay adjustment is automatically shifted and the method
is applied for complex electric drives. Experimental results are shown
in the case of a drive constituted by a DC/AC inverter supplying a
single-phase induction motor and of a step-down chopper
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
