Analysis and optimum design of a buck-type DC-to-DC converter employing load current feedforward

Author

Kanemaru, S. ; Hamada, Takahiro ; Nabeshima, T. ; Sat, T. ; Nakano, T.

Author_Institution

Dept. of Electr. & Electron. Eng., Oita Univ., Japan

Volume

1

fYear

1998

fDate

17-22 May 1998

Firstpage

309

Abstract

Analytical and experimental considerations of the dynamic characteristics of a voltage controlled buck-type DC-to-DC power converter employing load current feedforward are described. The performance index, integral of the output voltage square error is introduced to evaluate the dynamic behavior of the output voltage by taking a transfer-function of a current transformer into consideration. As a result, optimum conditions of the feedforward parameters that give the excellent dynamic regulation are derived. Furthermore, the effective control region of the feedforward limited by the saturation characteristics of the PWM is discussed

Keywords

DC-DC power convertors; PWM power convertors; control system analysis; control system synthesis; current transformers; electric current control; feedforward; load (electric); performance index; power transformers; transfer functions; PWM; buck-type DC-to-DC power converter; current transformer; dynamic behavior; dynamic characteristics; dynamic regulation; effective control region; load current feedforward; output voltage square error; performance index; saturation characteristics; transfer-function; Current transformers; DC-DC power converters; Feedback circuits; Performance analysis; Pulse width modulation; Pulse width modulation converters; Switches; Transfer functions; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE

Conference_Location

Fukuoka

ISSN

0275-9306

Print_ISBN

0-7803-4489-8

Type

conf

DOI

10.1109/PESC.1998.701916

Filename

701916