Non-linear control of a power-factor-correction rectifier with fast dynamic response

This paper presents a non-linear control scheme for power-factor-correction rectifiers. Based on the dynamic model of a power-factor-correction boost rectifier, a control algorithm is deduced by imposing a desired linear dynamics in the output-voltage. The proposed scheme has shown its fast dynamic response of the output-voltage, excellent voltage regulation, insensitive to load variations and the achievement of nearly unitary power factor. Selected experimental results demonstrate the effectiveness of the control proposal compared with a conventional control.

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