Research and Development of Auxiliary Converters for Application in Electric Vehicles

Abstract

The doctoral Thesis is devoted to the research and development of auxiliary converters for application in electric vehicles. The Thesis contains a discussion on the dynamics, reliability and energy efficiency improvements in the auxiliary converter system. A fuzzy logic current balancing and output voltage regulator, a fault detection method, and a fault-tolerant operation algorithm were developed based on the proposed indirect converter current measurement method in the scope of the Thesis. The provided solution aims to reduce the energy consumption of auxiliary converter systems by up to 10 % and improve reliability by reducing thermal and mechanical loads by up to 80 %.