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In this paper, Inductor Average Current Mode Control (IACMC) is proposed to regulate single phase Power Factor Correction (PFC) Buck-Boost Converter (BBC) operated in Continuous Conduction Mode (CCM). The Proportional-Integral (PI) controller is acts as an outer voltage loop and the IACMC is used in the inner current loop for PFC BBC. The proposed IACMC has advantages such as robustness when there...
This paper reports the modeling and simulation aspects of a peak current controlled power-factor-correction converter (PFC), which is widely used in switch-mode power supply applications. The main objective is to show the real behavior of this converter operating under specific conditions. Firstly, a numerical simulation based on a discrete model is used. Analysis of this model shows that chaos and...
This paper presents a detailed analysis of a Single-Stage Single-Switch Power Factor Corrector, S4PFC, with Integrated Magnetic, IM. The chosen topology for study for implementing S4PFC is based upon a Boost Converter operating in Discontinuous-Mode for Input Current Shaping, and a Forward Converter for output voltage regulation. Detailed are the modes of converter operation, as well as essential...
Recently, power factor correction (PFC) boost converters have been reported as exhibiting a wide range of bifurcations and chaos under specific conditions. In this paper, we derived a nonlinear model from one point of observation to the next. Analysis of this model shows that chaos and bifurcations may occur along with the changing values of some system parameters. A current-mode controlled PFC boost...
A new digital control strategy of parallel duty cycle control (PDC) for power factor correction (PFC) is presented and analyzed in this paper. Based on this new control strategy, the duty cycle determination algorithm includes the current term and the voltage term, which can be calculated in parallel and requires only one multiplication and three additions or subtractions operations in digital implementation...
A modeling approach of a power factor correction circuit operating in boundary conduction mode is presented. The PFC is controlled by a constant on-time of the switch. The effect of valley switching is simplified and taken into account as dead-time to generate a large signal model. On the basis a small signal model for the constant on-time controlled PFC voltage loop is derived. The large and small...
This paper proposes a predictive algorithm for AC-DC three phase converter with active power factor correction. The control proposed does not have current feedbacks and the input current levels are controlled by the DC voltage loop. The main idea of this algorithm is to take the three phases converter like a sequence of two converters working simultaneously and the equations modeled was approximated...
In this paper, a low cost buck converter was selected as the PFC stage of the electronic ballast for a 70 W metal halide lamp. In this way, several advantages could be obtained, such as simple circuit topology, easy control strategy, especially decreased cost and low requirements for circuit components. All circuit parameters should be designed to ensure that the buck converter was operated in DCM...
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