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A comparison of strategies for energy management in electrical vehicles with hybrid energy storage systems is presented. The storage system considered is composed by a bank of lead-acid batteries that provide high energy density and an ultracapacitor, a high power. One of the control strategies was already proposed in a previous work, a cascade topology that uses monitors of state (ME, in Spanish)...
The derivation and implementation of the natural switching surfaces (NSS) considering parametric uncertainties for a flyback converter operating at boundary conduction mode (BCM) is the main focus of this paper. The NSS presents many benefits for the control of non-linear systems; for example fast transient response under load-changing conditions. However, the performance considerable worsens when...
An energy-management system (EMS) for a Neighborhood Electric Vehicle (NEV) prototype of the Applied Electronics Group at the National University of Rio Cuarto is presented. The main source of energy of the NEV is a bank of lead-acid batteries, while the secondary source is a module supercapacitors. The complete system is first described, and then the energy management strategy is designed to reduce...
The derivation and implementation of natural switching surface (NSS) control for a flyback converter operating in boundary conduction mode (BCM) is the main focus of this paper. The flyback converter has been wildly utilized in the area of power electronics and BCM operation has been proven to be successful in attaining high efficiencies. The NSS presents many benefits for the control of non-linear...
In this artilce we propose an output feedback control scheme for the robust stabilization, through sliding mode creation, of nonlinear discrete-time systems described in Fliess' Generalized Observability Canonical Form. The results arc applied to the regulation of a discretized model of a nonlinear DC motor.
In this paper a new control strategy for voltage-source converters (VSC) is introduced. The proposed strategy consists of a nonlinear feedback controller based on feedback linearization plus a feedforward compensation of the estimated load current. In our proposal an energy function and the direct-axis current are considered as outputs, in order to avoid the internal dynamics. In this way, a full...
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