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This paper presents a mixed-signal maximum power point tracking (MPPT) integrated circuit (IC) controller implemented with a mixed-signal multiplier for photovoltaic (PV) systems. The mixed-signal MPPT IC controller which is easily implemented on a low cost single chip IC, is based on perturbation and observation method. The mixed-signal multiplier combines features of analog control with digital...
This paper presents an algorithm for implementing the nonlinear-carrier (NLC) control with variable slope ramps for a small wind power system without any input voltage sensing circuits, error amplifiers in the current shaping loop, or other external control components. This ramp is created through a slope comparison without any dividers. The proposed method not only achieves a high power factor, but...
This paper presents an algorithm for implementing the nonlinear-carrier (NLC) control method for a single-phase power factor correction (PFC) rectifier without an input voltage-sensing circuit, an error amplifier in the current shaping loop, or other external control components. Unity power factor and low harmonic distortion are achieved by adapting NLC control with a variable slope ramp. This ramp...
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