Optimal design of a new step-down 18-pulse autotransformer

NIU Lan; GE Hong-juan; YANG Guang; JIANG Fan

doi:10.13374/j.issn2095-9389.2017.03.019

Volume 39 Issue 3

Mar. 2017

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NIU Lan, GE Hong-juan, YANG Guang, JIANG Fan. Optimal design of a new step-down 18-pulse autotransformer[J]. Chinese Journal of Engineering, 2017, 39(3): 456-461. doi: 10.13374/j.issn2095-9389.2017.03.019

Citation:

NIU Lan, GE Hong-juan, YANG Guang, JIANG Fan. Optimal design of a new step-down 18-pulse autotransformer[J]. Chinese Journal of Engineering, 2017, 39(3): 456-461. doi: 10.13374/j.issn2095-9389.2017.03.019

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Optimal design of a new step-down 18-pulse autotransformer

doi: 10.13374/j.issn2095-9389.2017.03.019

1) School of Automation, Nanjing University of Aeronautics and Astronautics, Nanjing 210000, China
2) School of Civil Aviation, University of Nanjing Aeronautics and Astronautics, Nanjing 210000, China

Received Date: 2016-05-12

Abstract

Abstract

Aiming at the requirement for voltage regulation with a 18-pulse autotransformer-rectifier, a novel step-down 18-pulse topology was designed and optimized based on the advantage of present topologies. The primary extended winding of the step-down 18-pulse autotransformer-rectifier was connected with the winding tap of the phase shift secondary winding to reduce the transformer input voltage. Considering the influence caused by the position change of the connecting tap between the primary extended windings and secondary phase shift windings on the autotransformer performance, transformer voltage ratio and winding tap position were regarded as variables. A universal design formula was derived and simulation analysis was carried out to obtain the optimal connection tap position with the minimum equivalent capacity of the step-down autotransformer under the same voltage ratio. Finally, the rationality of the design is verified by experiments.
- autotransformers,
- equivalent capacity,
- harmonic current,
- step-down,
- pulse

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References(5)

References

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