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http://dx.doi.org/10.6113/JPE.2014.14.4.712

A Simple Grid-Voltage-Sensorless Control Scheme for PFC Boost Converters  

Nguyen, Cong-Long (School of Electrical Engineering, University of Ulsan)
Lee, Hong-Hee (School of Electrical Engineering, University of Ulsan)
Chun, Tae-Won (School of Electrical Engineering, University of Ulsan)
Publication Information
Journal of Power Electronics / v.14, no.4, 2014 , pp. 712-721 More about this Journal
Abstract
This paper introduces a simple grid-voltage-sensorless control scheme for single-phase power factor correction (PFC) boost converters. The grid voltage waveform is obtained based on the dc output voltage, the switching duty ratio, and a phase-lead compensator. In addition, the duty ratio feedback is utilized to obtain the unity input power factor and the zero harmonic current. The proposed control scheme is designed and mathematically analyzed based on a small-signal model of PFC boost converters. To verify the effectiveness of the proposed control scheme, several simulations and experiments are carried out in two applications: an industrial power system with a 60 Hz grid frequency and a commercial aircraft application with a 400 Hz grid frequency.
Keywords
Power factor correction (PFC) techniques; PFC boost converters; Sensorless control; Small-signal model;
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