Title :
Modified switched power convertor with zero ripple
Author :
Schlereth, Fred H. ; Midya, Pallab
Author_Institution :
Dept. of Electr. & Comput. Eng., Syracuse Univ., NY, USA
Abstract :
A modified power conversion scheme suitable for switched mode converters which addresses the problem of output ripple without incurring an appreciable loss of efficiency is presented. An analog controlled current source is used to inject a current into the load which is equal and opposite to the ripple current due to the switching circuit. The control system ensures that most of the load current is supplied by the switch, and that the current through the controlled current source is limited to small values. In this way high efficiency is maintained. A modified DC-to-DC buck convertor based on this principle has been designed, analyzed, and implemented yielding good agreement with the theory
Keywords :
network analysis; power convertors; switched mode power supplies; switched networks; switching circuits; DC-DC buck convertor; analog controlled current source; modified power conversion scheme; output ripple; switched mode converters; switched power convertor; zero ripple; Active filters; Application software; Control systems; Converters; Current supplies; Power conversion; Switches; Switching circuits; Switching frequency; Voltage;
Conference_Titel :
Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on
Conference_Location :
Champaign, IL
DOI :
10.1109/MWSCAS.1989.101905
