Title :
Variable structure control of buck derived DC/DC PWM converters
Author :
Chiang, S.J. ; Chang, J.M.
Author_Institution :
Dept. of Electr. Eng., Nat. Lien-Ho Inst. of Technol., Miao-Li, Taiwan
Abstract :
This paper presents a smooth variable structure control (VSC) to alleviate the chattering effect such that conventional PWM can be employed for constant switching frequency and easy implementation. The buck derived DC/DC converters, operated either as stand-alone or in parallel with an outer loop regulation structure of an active current sharing scheme, are designed, the resulted responses have significant stability, fast response and precise voltage regulation and current sharing. The effectiveness is demonstrated by some experimental results
Keywords :
DC-DC power convertors; PWM power convertors; control system synthesis; electric current control; switching circuits; variable structure systems; voltage control; active current sharing scheme; buck derived DC/DC PWM power converters; chattering effect elimination; constant switching frequency; control design; control performance; outer loop regulation structure; response; stability; variable structure control; voltage regulation; Control systems; DC-DC power converters; Electric variables control; Error correction; Power conversion; Pulse width modulation; Pulse width modulation converters; Stability; Switching frequency; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.878883
