A new auto-bias method for digital control dc-dc converter

Author

Kurokawa, Fujio ; Sakemi, Junya ; Yamanishi, Akihiro ; Osuga, Hiroyuki

Author_Institution

Grad. Sch. of Enginnering, Nagasaki Univ., Nagasaki, Japan

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

5

Abstract

Main content of this paper is a new auto-bias method for digital control dc-dc converter. In the proposed method, not only the P-I-D control as the feedback one but also the new auto-bias method as the feedforward one is used. The new auto-bias method consists of two superior functions. One is the steady-state function for the expanse of regulation range of output voltage, and another is exponential function for the improvement of transient response. By using these functions, the proposed method has no steady-state-error against the changes of the input voltage and the output current. In addition, the undershoot of output voltage and the overshoot of reactor current are approximately 92% and 89% smaller than the conventional method in the step change of load resistance from 100Ω to 5Ω. Especially, the convergence time for output voltage is converged instantly. It is confirmed that the new auto-bias model control technique is useful to realize the high performance digital control method.

Keywords

DC-DC power convertors; digital control; transient response; P-I-D control; auto-bias model control technique; conventional method; digital control DC-DC converter; exponential function; resistance 100 ohm to 5 ohm; transient response; Digital control; Inductors; Mathematical model; Steady-state; Transient analysis; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073373

Filename

6073373