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Journal article · Ahead of Print article

Comprehensive Power Losses Model for Electronic Power Transformer

In Ieee Access — 2018, Volume 6, pp. 14926-14934

By Yue, Quanyou; Li, Canbing1; Cao, Yijia1; He, Yuqing; Cai, Binglin; Wu, Qiuwei2,3,4; Zhou, Bin1

From

Hunan University1

Department of Electrical Engineering, Technical University of Denmark2

Center for Electric Power and Energy, Centers, Technical University of Denmark3

Electric Power Systems, Center for Electric Power and Energy, Centers, Technical University of Denmark4

The electronic power transformer (EPT) has highe rpower losses than the conventional transformer. However, the EPT can correct the power factor, compensate the unbalanced current and reduce the line power losses in the distribution network.Therefore, the higher losses of the EPT and the consequent reduced power losses in the distribution network require a comprehensive consideration when comparing the power losses of theEPT and conventional transformer.

In this paper, a comprehensive power losses analysis model for the EPT in distribution networks is proposed. By analyzing the EPT self-losses and considering the impact of the non-unity power factor and the three-phase unbalanced current, the overall power losses in the distribution network when using the EPT to replace the conventional transformer is analyzed, and the conditions in which the application of the EPT can cause less power losses are obtained.

Based on this, the sensitivity analysis for the EPT comprehensive power losses model is carried out by comparing the value of each parameter variation impact on the EPT losses model. In case study, the validity of the comprehensive power losses model is verified.

Language: English
Publisher: IEEE
Year: 2018
Pages: 14926-14934
ISSN: 21693536
Types: Journal article and Ahead of Print article
DOI: 10.1109/ACCESS.2018.2791587
ORCIDs: 0000-0001-9116-7487 , 0000-0002-1376-4531 and Wu, Qiuwei
Keywords

Comprehensive power losses model Distribution network Electronic power transformer Power factor Unbalanced current

Other keywords

Electrical engineering. Electronics. Nuclear engineering Harmonic analysis Insulated gate bipolar transistors Oil insulation Power transformers Reactive power Switching loss TK1-9971 Windings distribution network electronic power transformer power factor unbalanced current

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