The Open Electrical & Electronic Engineering Journal

2015, 9 : 127-134
Published online 2015 April 17. DOI: 10.2174/1874129001509010127
Publisher ID: TOEEJ-9-127

Sneaking Operation Modes in Zero-Current-Switching Converter

Qu Lili , Zhang Bo and Wallace K.S. Tang
Department of Automation, Foshan University, Foshan, Guangdong, 528000, P.R. China.

ABSTRACT

This paper reports the occurrence of some abnormal operational modes in soft-switching converters. By constructing a Boolean matrix based on the states of the switching components, some unexpected topological states are identified. Consequently, these states excite the abnormal or sneaking operational modes as referred. A three-stage step-up zero- current switching converter is used as an illustrative example and detailed analysis has been carried out. The phenomenon has also been confirmed in experiences, where performance degradation is noticed.

Keywords:

Solid-plug conveying, centrifugal extruder, polymer process, mathematics analysis.