Title :
On the control of oscillations in DC-AC converters
Author :
Aracil, Javier ; Gordillo, Francisco
Author_Institution :
Escuela Superior de Ingenieros, Sevilla, Spain
Abstract :
In this paper we introduce a new control method for uninterruptible power supplies (UPS) without using reference signals. This is accomplished by a feedback law associated to a Lyapunov function which guarantees the stability and robustness of the system. Furthermore an adaptive mechanism is included to cope with changes in the load. Simulations show that the performance of the proposed system meets the requirements.
Keywords :
DC-AC power convertors; Lyapunov methods; adaptive control; bifurcation; feedback; oscillations; robust control; uninterruptible power supplies; DC-AC converters; Hopf bifurcation; Lyapunov function; UPS; adaptive mechanism; feedback law; nonlinear oscillations; oscillations control; robustness; stability; uninterruptible power supplies; Automatic control; Backstepping; Feedback; Limit-cycles; Lyapunov method; Power supplies; Robust stability; State-space methods; Uninterruptible power systems; Voltage;
Conference_Titel :
IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]
Print_ISBN :
0-7803-7474-6
DOI :
10.1109/IECON.2002.1182842
