Investigation of DC-DC Boost Converter for Reliability of Operational Planning

Presentation of power electronic-based converters into the various applications and mainly in vertical and high power applications is an important issue. Another critical challenge in this field is reliability issues of the overall systems. This paper considers a reliability problem for an interleaved boost converter with respect to minimizing cost of the converter. As the power semiconductor switches are highly vulnerable, their reliability analysis is of high importance in reliability studies. The failure of one-power switches can reduce the system reliability. A possible approach to enhance the reliability of DC-DC converters is employing an interleaved technique. This technique nevertheless increases the implementation cost. Reducing the volume and cost with maximum reliability is a necessary issue that less attention has been paid to literature. In the problem analysis, the levelized costs of components and reliability formulations are considered. The proposed approach for design the studied converter considered reliability and cost indexes as the main goal of design. Numerical results show that cost and reliability two indices of contradiction.