Title :
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
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;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.701916
