A new STS model DC-DC converter

Author

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

Author_Institution

Nagasaki Univ., Nagasaki, Japan

fYear

2011

fDate

17-22 Sept. 2011

Firstpage

680

Lastpage

684

Abstract

This paper presents a new STS (steady-state-error and transient suppression) model based digital control dc-dc converter. In this method, not only the conventional P-I-D control as the feedback one but also the new STS model as the feed-forward one is used. The proposed STS model is consist of two superior functions, one is the steady-state function for expanse of regulation range of output voltage, and another is the exponential function for improvement of transient response. As a result, the proposed method has no steady-state-error against the changes of input voltage E_i and output current I_o. In addition, the undershoot of output voltage and the overshoot of reactor current are suppressed to about 8% and 11% as compared with the conventional one 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 STS model control realizes good characteristics for both the steady and transient state.

Keywords

DC-DC power convertors; feedback; three-term control; voltage control; DC-DC converter; P-I-D control; STS model control; exponential function; feedback; output voltage regulation; reactor current; steady-state-error; transient suppression; Digital control; Integrated circuit modeling; Numerical models; Steady-state; Transient analysis; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

978-1-4577-0542-7

Type

conf

DOI

10.1109/ECCE.2011.6063835

Filename

6063835