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http://dx.doi.org/10.6113/TKPE.2017.22.2.118

Single Phase NPC Module - Development of 75KVA Single Phase Smart Transformer with 3 Serial Cascade Configuration  

Park, Ju-Young (Gphilos)
Niyitegeka, Gedeon (Gphilos)
Cho, Kyeong-Sig (Gphilos)
Kim, Myung-Yong (Korea Railroad Research Institute)
Park, Ga-Woo (Gphilos)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.22, no.2, 2017 , pp. 118-125 More about this Journal
Abstract
In this paper, we propose a smart transformer for a smart transformer miniature model, which can replace a 60 [Hz] single-phase transformer installed in an electric vehicle. The proposed smart transformer is lighter than a conventional transformer, can control instantaneous voltage, and can be expected to improve power quality through harmonic compensation. The proposed intelligent transformer consists of an incoming part, an AC/DC converter, and a dual active bridge. Only the incoming part and the AC/DC converter are described in this paper. The proposed intelligent transformer has 75 kVA 3.3 kV input and 750 V DC output, which are verified by simulation and experiment.
Keywords
NPC converter; Cascade converter; Dual active bridge; Voltage balancing; Start transformer; Electric train;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 S. M. Kim, S. H. Lee, and M. Y. Kim, "Structure and control of smart transformer with single-phase three-level H-bridge cascade converter for railway traction system," KSR, Vol. 19, No. 5, pp. 617-628, Oct, 2016.
2 Z. Shu, Z. Kuang, S. Wang, X. Peng, and X. He "Diode-clamped three-level multi-module cascaded converter based power electronictraction transformer," Proceedings of Future Energy Electronics Conference (IFEEC), 2015 IEEE 2nd International, pp. 1-5, 2015.
3 K. Mainali, A. Tripathi, S. Madhusoodhanan, A. Kadavelugu, D. Patel, S. Hazra, K. Hatua, and S. Bhattacharya, "A transformerless intelligent power substation: A three-phase SST enabled by a 15-kV SiC IGBT," IEEE Power Electronics Magazine, Vol. 2, No. 3, pp. 31-43, Mar, 2015.   DOI
4 R. De Doncker, D. M. Divan, and M. H. Kheraluwala, "A three-phase soft-switched high-power-densty dc/dc converter for high-power applications," IEEE Trans. Ind. Appl., Vol. 27, No. 1, pp. 63-73, Mar, 1991.   DOI
5 Y. J. Han, S. W. Kim, T. H. Lee, H. M. Koo, K. W. Cho, and S. O. Park, "A study on mechanical characteristic analysis for main transformer of high speed railway," Autumn Conference of the Korean Society for Railway, Busan, pp. 55-60, 2006.
6 H. L. Liu et al., "DSP based space vector PWM for three-level inverter with DC-link voltage balancing," IEEE-IECON Conf. Rec., pp. 197-203, 1991.
7 A. Nabae, I. Takahashi, H. Akagi, "A new neutralpoint- clamped PWM inverters," IEEE Trans. on Ind. Applicat., Vol. IA-17, No. 5, pp. 518-523, 1981.   DOI
8 A. M. Hava, R. J. Kerkman, T. A. Lipo "Simple analytical and graphical tools for carrier based pwm methods," IEEE Power Elecronics Specialists Conference, Vol. 2, pp. 1462-1471, June 1997.