Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Design and Implementation of a Current Controller for Boost Converters Using a DSP
Authors Kwang-Woon Lee
DOI 10.6113/TKPE/2012.17.3.259
Page pp.259-265
ISSN 1229-2214
Keywords boost converter; current control; DSP
Abstract This paper introduces a method for design and implementation of a current controller for boost converter operating in continuous conduction mode (CCM) using a digital signal processor (DSP). A Proportional-Integral (PI) type current controller outputs an average voltage command for inductor, used in the input side of the boost converter, and the duty-ratio of PWM (pulse width modulation) signal for switching device is directly calculated from the average voltage command. The gains of the PI current controller are selected such that the current response characteristics are the same as those of a first-order low-pass filter. The proposed current control scheme is implemented using a DSP based on fixed-point math operations and an experimental study has been performed to validate the proposed method.