Robust digital controller for fourth-order bidirectional charger/discharger

Author

Veerachary, M. ; Veeravalli, P.K.

Author_Institution

Dept. of Electr. Eng., IIT Delhi, New Delhi, India

fYear

2013

fDate

22-25 April 2013

Firstpage

1156

Lastpage

1161

Abstract

A 4^th order bidirectional converter for charger/discharger (BCDR) applications is proposed and then robust controller is designed. The advantages and limitations of the proposed converter are compared with the conventional charger/dischargers. Discrete-time modeling and the expressions for small-signal transfer functions of the proposed BCDR are derived using statespace analysis. Based on the discrete-time models controllers for both the charging and discharging modes are designed. Then the robustness of the designed controllers is verified and necessary and sufficient conditions on nominal performance, robust stability and the robust performance conditions are obtained. Robustness of the designed controllers is verified through time-domain simulations and then compared with experimental results.

Keywords

DC-DC power convertors; digital control; robust control; stability; BCDR application; converter; discrete-time model; fourth-order bidirectional charger-discharger; robust digital controller; robust stability; small-signal state-function; state-space analysis; time-domain simulation; Batteries; Mathematical model; Robust stability; Robustness; Transfer functions; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems (PEDS), 2013 IEEE 10th International Conference on

Conference_Location

Kitakyushu

ISSN

2164-5256

Print_ISBN

978-1-4673-1790-0

Electronic_ISBN

2164-5256

Type

conf

DOI

10.1109/PEDS.2013.6527194

Filename

6527194