8 citations · 25 across the 23 of their papers we have counts for
29 papers
Parameter Estimation of Two Classes of Nonlinear Systems with Non-separable Nonlinear Parameterizations
Romeo Ortega, Alexey Bobtsov, Ramon Costa-Castello +1
In this paper we address the challenging problem of designing globally convergent estimators for the parameters of nonlinear systems containing a non-separable exponential nonlinea…
A high performance globally exponentially stable sensorless observer for the IPMSM: Theoretical and experimental results
Bowen Yi, Romeo Ortega, Jongwon Choi +1
In a recent paper [18] the authors proposed the first solution to the problem of designing a {\em globally exponentially stable} (GES) flux observer for the interior permanent magn…
On-line Identification of Photovoltaic Arrays' Dynamic Model Parameters
Alexey Bobtsov, Fernando Mancilla-David, Stanislav Aranovskiy +1
This paper deals with the problem of on-line identification of the parameters of a realistic dynamical model of a photovoltaic array connected to a power system through a power con…
A New Least Squares Parameter Estimator for Nonlinear Regression Equations with Relaxed Excitation Conditions and Forgetting Factor
Romeo Ortega, Jose Guadalupe Romero, Stanislav Aranovskiy
In this note a new high performance least squares parameter estimator is proposed. The main features of the estimator are: (i) global exponential convergence is guaranteed for all…
Adaptive state observer for linear time-varying system with partially unknown parameters of the state matrix and the input vector
Alexey Bobtsov, Nikolay Nikolaev, Romeo Ortega +2
The article deals with the problem of synthesis of an adaptive observer of state variables of a linear time-varying SISO dynamic system. It is assumed that the control signal and t…
An Observer-Based Composite Identifier for Online Estimation of the Thevenin Equivalent Parameters of a Power System
Daniele Zonetti, Romeo Ortega, Rafael Cisneros +3
We consider a Thévenin equivalent circuit capturing the dynamics of a power grid as seen from the point of common coupling with a power electronic converter, and provide a solution…