Hybrid control of high power factor AC/DC regulated power supply

DOI

10.2991/aest-16.2016.28How to use a DOI?

Keywords

two stage PFC circuit; hybrid control; double forward DC/DC converter; switches synchronous method.

Abstract

The control circuit of two-stage power factor correction(PFC) is complex, and the volume of power supply is large because of high voltage ripple of the first stage filter capacitor. Towards to this deficiency, a two-stage PFC circuit based on chip and ARM hybrid control is designed. The first stage is Boost converter with UC3854 PFC regulator, and the second stage is double forward DC/DC converter controlled by ARM with one cycle control algorithm. A switches synchronous method to decrease the output voltage ripple of the first stage circuit is proposed, which is taking the driving signal's falling edge of the first stage as the trigger signal to control the MOSFET of the second stage circuit conduction when the switch of the first stage is off. Simulation of the overall system is conducted in Matlab/Simulink, the result show the design of control strategy and circuit parameters are reasonable, the power factor, the total harmonic distortion(THD), the output voltage ripple of the first stage are effectively improved, and the whole system has good inhibitory effect on input voltage and load disturbance.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hongli Cheng
AU  - Yuanyuan Guo
PY  - 2016/11
DA  - 2016/11
TI  - Hybrid control of high power factor AC/DC regulated power supply
BT  - Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)
PB  - Atlantis Press
SP  - 218
EP  - 222
SN  - 1951-6851
UR  - https://doi.org/10.2991/aest-16.2016.28
DO  - 10.2991/aest-16.2016.28
ID  - Cheng2016/11
ER  -