Title :
A discrete modeling for power factor correction circuit
Author :
Zhang, Weiping ; Chen, Fei ; Zhao, Xusen ; Liu, Yuanchao
Author_Institution :
Coll. of Inf. Eng., North China of Univ. Technol., Beijing, China
Abstract :
In this paper, a novel discrete model has been proposed to simulate the controller IC UC3854. The main contributions are as followings: 1) The power stage of the Boost converter has been modeled by using the large signal approach and the loop gain of current program has been put forward; 2) The continues-time voltage control diagram has been investigated by employing equivalent power stage which contains the main circuit and current program; 3) Based on the continues-time model, a new discrete model of PFC has been given out and the operational principle has been introduced; 4) A 4kw prototype has been built up to verify the validity of the new model; Results of the simulation and the experiment show that the power factor is 96.7% and the linear current harmonics components can completely meet the requirements of IEC 61000-3-2.
Keywords :
continuous time systems; power factor correction; switching convertors; boost converter; continued-time voltage control diagram; controller IC UC3854; discrete modeling; power factor correction circuit; Circuit simulation; Force control; Integrated circuit modeling; Power factor correction; Power system harmonics; Power system modeling; Reactive power; Regulators; Transfer functions; Voltage control; discrete model; power factor correction circuit;
Conference_Titel :
Power Electronics and Drive Systems, 2009. PEDS 2009. International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-4166-2
Electronic_ISBN :
978-1-4244-4167-9
DOI :
10.1109/PEDS.2009.5385690
