Analysis and Performance of the Arno Converter

The published literature deals with Arno converters with identical number of turns in three phases and capacitors connected for reducing negative sequence voltage. This paper presents the analysis of the Arno converter with additional turns in the auxiliary phase. The starting and running performance are analyzed using modified symmetrical component theory. Theoretical results are compared with experimental results for a 120kVA converter developed for ac locomotive duty. Effects of variation of voltages and machine parameters on performance are also discussed.