Taihe Circuit, a Novel Circuit Topology for Conversion from Single-Phase to Three-Phase

Abstract:

This paper presents a brand-new splitting phase topology based on three-phase full-bridge inverter, which is named ‘Taihe Circuit’. This circuit topology resembles the traditional three-phase full-bridge inverter except for the direct connection of its two-phase output with the two terminals of the one-phase power source. Its operating principles are as follows: one-phase power source first charges the DC capacitor through three-phase full-bridge inverter in a small time period. After the voltage of the DC capacitor reaches stability, three-phase full-bridge inverter can output three-phase symmetrical AC voltage. The average power of the one-phase AC source equals to the power consumed by the three-phase symmetrical load, and the fluctuation of the power of the AC source corresponds to the charge and discharge of the capacitor on the DC side of the inverter. This circuit topology can achieve the conversion from one-phase AC source to three-phase symmetrical AC source when knowing three-phase load and can be used cooperatively with other circuits in some situations. In comparison to traditional scheme, a combination of one-phase rectification and three-phase inversion, the proposed brand-new topology requires less power electronic devices, as is more economically practical. As a final note, feasibility of the topology is verified through simulation.

• Periodical: Advanced Materials Research (Volume 1077)
• Pages: 172-176
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1077.172
• Online since: December 2014
• Authors: Yong Qiang Zhu, Wen Rui Guo, Guan Jie Wang, Guang Quan He, Ya Feng Wen
• Keywords: Dc Capacitor, Splitting Phase Circuit, Three-Phase Full-Bridge Inverter

References

[1] Liu Zhengsheng, Xia Dunzhu, Weng Ling. Single phase power supply research into split phase of three-phase power supply circuit [J]. University physics, 2000, 06: 25-28+45.

[2] Li QiongLin, Liu HuiJin, Zhang ZhenHuan, Chen HongKun, Based on the principle of intermodulation is handed in rectangular harmonic analysis of variable flow system [J], Proceedings of the CSEE, 2007, 34: 107-114.

[3] Xun Min, Power supply system through multi-level three-phase - single phase orthogonal converter design[D]. SouthwestJiaotongUniversity, (2013).

[4] Ou Yangfan, Zhou Youqing, Gao Le. Threephase- single phase power supply condition and parameter matching research based on balance transformer [J]. Proceedings of the CSEE, 2008, 13: 158-162.

[5] He Li, Tian Mingxing, Tian Wenjun, Liu Yanju. Y/>/▽balance of electric traction transformer application feasibility study [J]. Journal of Electric Power, 2010, 06: 463-466.