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http://dx.doi.org/10.6113/TKPE.2014.19.2.124

Implementation of Non-time-varying Duty Ratio Transfer Function for Improvement of Control Characteristics Bi-directional Charger  

Hwang, Jung-Goo (Dept. of Electrical Engineering, Chonnam Nat'1 Univ.)
Kim, Sun-Pil (Dept. of Electrical Engineering, Chonnam Nat'1 Univ.)
Han, Sang-Taek (ESS Development, Samsung SDI)
Kim, Ki-Seon (ESS Development, Samsung SDI)
Choo, Young-Bae (Dept. of Electrical Engineering, Koje College)
Park, Sung-Jun (Dept. of Electrical Engineering, Chonnam Nat'l Univ.)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.19, no.2, 2014 , pp. 124-132 More about this Journal
Abstract
In this paper, we implement a non-time-varying transfer function of the duty ratio to improve the control characteristics in a control system that Input voltage and the output voltage is varied, DC / DC converters for bi-directional charging. When control is performed with using controller gain of conventional design, characteristics of the control is varied to fluctuations of the input voltage. The proposed method is the equivalently removing method for duty ratio in entire control block, by voltage controller gain is changed for inverse of the duty ratio. The proposed non-time-varying duty ratio transfer function is applied to DC / DC converter for bi-directional charging. In this paper, feasibility and superiority is verified through PSIM simulations and experiments.
Keywords
battery charger; bi-directional DC/DC converter; controller; compensator;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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