Novel Online Parameter Tuning Method for Digital Boost PFC With Transition Current Mode

Author

Yen-Shin Lai ; Kung-Min Ho

Author_Institution

Center for Power Electron. Technol., Nat. Taipei Univ. of Technol., Taipei, Taiwan

Volume

50

Issue

4

fYear

2014

fDate

July-Aug. 2014

Firstpage

2719

Lastpage

2727

Abstract

A new online parameter tuning method for digital power factor corrector (PFC) with transition current mode (TCM) control is proposed in this paper. The proposed method copes with the parameter variation issue, which results in discontinuous current mode operation and larger current ripple. The proposed method is to give one more current sample in one sampling period in order to estimate the inductance of a boost inductor online, thereby tuning the parameter of the predicted switching period. It will be shown by experimental results that the proposed online parameter tuning method can retain TCM operation even under full-load condition and slightly increase the converter efficiency. Experimental results derived from a digital-signal-processor-based controller are presented for confirmation. The PFC is with 270-W power rating, 100-V/50-Hz input, and 385-V/dc output. Experimental results demonstrate the effectiveness of the proposed online parameter tuning method for digital PFC under TCM control.

Keywords

AC-DC power convertors; power conversion harmonics; power factor correction; voltage control; zero current switching; current ripple; digital boost PFC; digital power factor correction; discontinuous current mode operation; frequency 50 Hz; full load condition; online parameter tuning method; parameter variation; power 270 W; transition current mode control; voltage 100 V; voltage 385 V; Inductance; Inductors; Reactive power; Switches; Tuning; Voltage control; Digital control; online parameter tuning; power factor corrector (PFC); transition current mode (TCM) control;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2014.2301867

Filename

6718052