Experimental Study of Chaos and Bifurcation in the Buck Converter
نویسندگان
چکیده
Nonlinear phenomena in closed-loop pulsewidth modulation (PWM) dc/dc converters have been reported recently. In this paper, we investigate experimentally these phenomena in a voltage-mode controlled buck converter operating in continuous-conduction mode. In particular, the complex behavior of a voltage feedback buck converter is studied for wide variation of input voltage and different load resistances. It is shown that many of the abrupt changes in system behavior occur due to border collision bifurcation. Keywords—Bifurcation, chaos, border collision, continuous conduction, PWM control.
منابع مشابه
Investigation and Control of Unstable Chaotic Behavior Using of Chaos Theory in Two Electrical Power Systems: 1-Buck Converter2- Power Transformer
This paper consist of two sections: control and stabilizing approach for chaotic behaviour of converter is introduced in first section of this paper for the removal of harmonic caused by the chaotic behaviour in current converter. For this work, a Time- Delayed Feedback Controller (TDFC) control method for stability chaotic behaviour of buck converter for switching courses in current control mo...
متن کاملStudy of Chaos in Voltage Controlled DC-DC Buck Converter
Power electronics as an application oriented discipline, has been employed in industrial, commercial, residential and aerospace environments. Since power electronic circuits containing pulse width modulation, are nonlinear systems, it exhibits complex behaviors such as bifurcation and chaos. In this paper, a simulation study of chaos in voltage controlled buck converter is done by varying the l...
متن کاملPrediction and observation of chaos in the buck converter
– A buck converter controlled by naturally-sampled constant frequency pulsewidth modulation in continuous mode of operation is analysed. For a fixed set of converter parameters and varying the dc supply voltage only the buck converter can be driven into chaos through a process of period doublings. A good agreement between simulation and experiments is obtained. Key-words: buck converter , ident...
متن کاملUnderstanding Chaos using Discrete-Time Map for Buck Converter
----Research in nonlinear dynamics and complexity has made remarkable progress in recent years. Almost all power electronic circuits exhibit some kind of nonlinear behavior e.g., quasi-periodicity, subharmonic oscillations, bifurcation, chaos. The aim of this paper is to investigate the nonlinear phenomenon and chaotic behavior in a DC-DC buck converter. The derivation of the discrete-time map ...
متن کاملSliding Mode Control for a Buck Converter
Chaotic behaviors of the buck converter were demonstrated by computer simulation studies. The paper implied theoretical considerations and simulations for this kind of converter using a sliding-mode control. The method tried to establish a periodic behavior from a chaotic one in converter behavior. Key-Words: buck converter, sliding-mode, control, bifurcation, periodic, chaotic
متن کامل