STATE CONTROL OF UNITY-POWER-FACTOR CONVERTERS

Ladislav Zboray

   The paper presents two schemes of unity-power-factor converters with state control. A single-phase boost converter keeps a constant average value of the output voltage during means variation, whereby the load current is estimated. A three-phase rectifier is described by a nonlinear state equation in a rotating reference frame and ensures power balance between its ac and dc sides. Simulation results confirm correctness of the designed control.

Keywords: state control, power factor, converter, observer

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