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http://dx.doi.org/10.6113/JPE.2012.12.4.623

Digital Control Strategy for Single-phase Voltage-Doubler Boost Rectifiers  

Cho, Young-Hoon (Dept. Electrical and Computer Engineering, Virginia Tech)
Mok, Hyung-Soo (Dept. of Electrical Engineering, Konkuk University)
Ji, Jun-Keun (Dept. of Electrical and Communication Engineering, Soonchunhyang University)
Lai, Jih-Sheng (Dept. Electrical and Computer Engineering, Virginia Tech)
Publication Information
Journal of Power Electronics / v.12, no.4, 2012 , pp. 623-631 More about this Journal
Abstract
In this paper, a digital controller design procedure is presented for single-phase voltage-doubler boost rectifiers (VDBR). The model derivation of the single-phase VDBR is performed in the s-domain. After that the simplified equivalent z-domain models are derived. These z-domain models are utilized to design the input current and the output dc-link voltage controllers. For the controller design in the z-domain, the traditional K-factor method is modified by considering the nature of the digital controller. The frequency pre-warping and anti-windup techniques are adapted for the controller design. By using the proposed method, the phase margin and the control bandwidth are accurately achieved as required by controller designers in a practical frequency range. The proposed method is applied to a 2.5 kVA single-phase VDBR for Uninterruptible Power Supply (UPS) applications. From the simulation and the experimental results, the effectiveness of the proposed design method has been verified.
Keywords
Voltage-Doubler Boost Rectifier; Power factor correction; Digital current controller; z-domain modelling; zero-order hold; digital delays;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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