6533b855fe1ef96bd12aff78

RESEARCH PRODUCT

Sensorless induction machine drive for fly-wheel generation unit based on a TLS-based non-linear observer

Angelo AccettaMaurizio CirrincioneMarcello PucciGiansalvo CirrincioneAntonino SferlazzaDavid Aitchison

subject

Non-linear observerLyapunov functionState variableEngineeringTotal least squaresComputer simulationSensor-less techniquebusiness.industryStatorMagnetic separationEstimatorControl engineeringFlywheellaw.inventionsymbols.namesakeInduction machine driveSettore ING-INF/04 - AutomaticaControl theorylawsymbolsbusinessFlywheel energy storage systemReference frame

description

This paper proposes a sensorless technique for an induction machine Flywheel Energy Storage System (FESS) based on a non-linear observer integrated with a total least-squares speed estimator taking into consideration the IM (Induction Machine) saturation effects. The nonlinear observer is based on an original formulation of the dynamic model of the IM including the magnetic saturation, rearranged in a space-state form, after assuming as state variables the stator current and the rotor magnetizing current space-vectors in the stator reference frame. The choice of the observer gain has been made by the use of Lyapunov's method. The speed signal needed by the non-linear observer for the flux estimation is provided by the Total Least Square (TLS) based speed estimator, which itself takes into consideration the magnetic saturation for the speed estimation. The proposed nonlinear observer has been tested in numerical simulation and verified experimentally on a suitably developed test set-up, demonstrating its applicability as far as FESS is concerned.

yearjournalcountryeditionlanguage
2016-06-012016 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)
https://doi.org/10.1109/sled.2016.7518794