Kalpana, R.P, P.S.Vidyasagar, V.S.Singh, B.2026-02-062018Proceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018, 2018, Vol., , p. -https://doi.org/10.1109/PEDES.2018.8707760https://idr.nitk.ac.in/handle/123456789/31370High power industrial loads are often fed from front-end multi-pulse rectifier as its ability to effectively and inexpensively mitigate the harmonics on the AC side is achieved by the multi-pulse autoconfigured transformer. This paper analyzes and investigates the operability of the zigzag autoconfigured transformer based 12-pulse rectifier when one of the input terminals is open, i.e., single-phasing. Contrary to the prior art multi-pulse rectifiers, the availability of neutral point in zigzag autoconfigured transformer results in normal operation at DC side during single-phasing. A detailed MATLAB Simulation is carried out to understand the single-phasing operation of the zigzag autoconfigured transformer. Further, the experimental results from the laboratory prototype are presented to validate the simulated results. © 2018 IEEE.Active interphase reactorFront-end converterMulti-pulse rectifierPFCPower qualitySingle-phasingTHD