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Title Design and implementation of hybrid controller for AC-DC power factor correction converter
Posted by Aileen Gumera
Authors Aileen Caberos, Shu-Chuan Huang , and Xerxex Dan Gumera
Publication date 2017/02/09
Conference 2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)
Publisher IEEE
Abstract This paper presents the design and implementation of a hybrid controller for AC to DC power factor correction (PFC) converter. A hybrid controller for the PFC integrates the analog current and digital voltage controllers to perform the hybrid method operating in average current-mode control (ACMC) with a switching frequency of 100 kHz to achieve low harmonic distortion, low ripple output voltage and high efficiency. The digital controller is realized with an 8-bit microcontroller configured as a proportional integrator (PI) compensator to compensate the output voltage to its desired output value. It can improve output voltage regulation against line and load variations. Moreover, this converter circuit is verified through Matlab/Simulink behavioral simulation. Finally, the results show the improvement is effective using an experimental prototype rated at 10W. It gives a higher power factor closes to unity with high efficiency. The converter efficiency is higher than the required energy-efficiency imposed by Energy star. The THD is approximately 9.587% and the ripple output voltage is around 0.93%.
Index terms / Keywords Power Factor Correction, average current mode control, Boost converter, dc-dc converter, digital PI compensator, programmable controller IC
DOI DOI: 10.1109/SPEC.2016.7846091