Abstract
Among different types of six-phase machines, extensive works have been done on pulse-width modulation (PWM) methods for asymmetrical six-phase machine and symmetrical six-phase machine with 2-isolated neutral connection. However, very limited work has been done on PWM technique for symmetrical six-phase machine with single isolated neutral, i.e. S6-1N though it has higher degree of freedom in post-fault operation. For S6-1N, the presence of zero-sequence plane complicates design of PWM methods. In this paper, the implementations of different PWM schemes for S6-1N machine are discussed. It is shown that zero-sequence injection method can be easily extended for S6-1N machine to yield discontinuous PWM. Using simulation and experiment, the implementation and comparison of continuous and discontinuous PWM methods for S6-1N are demonstrated.
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Acknowledgements
The authors thank the technical and financial assistance of UM Power Energy Dedicated Advanced Centre (UMPEDAC) and the Higher Institution Centre of Excellence (HICoE) Program Research Grant, UMPEDAC—2018 (MOHE HICOE—UMPEDAC), Ministry of Education Malaysia, RU007-2018, RU012-2019 and FRGS (FP049-2014B), University of Malaya.
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Shihab, B.M., Tousizadeh, M. & Che, H.S. Continuous and Discontinuous PWM Methods for Symmetrical Six-Phase Induction Motor with Single Isolated Neutral. Arab J Sci Eng 45, 1885–1895 (2020). https://doi.org/10.1007/s13369-019-04267-x
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DOI: https://doi.org/10.1007/s13369-019-04267-x