# System Construction Method of Parallel Operation System constructed with Three Electric Power Converters

• Ishikura, Keisuke (Dept. of Electronic Systems Engineering, the University of Shiga Prefecture) ;
• Inaba, Hiromi (Dept. of Electronic Systems Engineering, the University of Shiga Prefecture) ;
• Kishine, Keiji (Dept. of Electronic Systems Engineering, the University of Shiga Prefecture) ;
• Nakai, Mitsuki (Ishida Co., Ltd.) ;
• Ito, Takuma (Dept. of Electronic Systems Engineering, the University of Shiga Prefecture)
• Accepted : 2014.11.18
• Published : 2014.12.01

#### Abstract

Parallel operation systems have an advantage in that they can be constructed quickly and inexpensively by combining existing electric power converters. However, in this case, there is a peculiar problem in that a cross current flows between the electric power converters. To design a control system more simply and commonalize the core of combination reactors, we reviewed a system construction method for parallel operation systems constructed with three electric power converters.

#### References

1. H. H. Anayo, et al., "Electrical driving techniques for large-scale and ultra-high speed elevators," Journal of the AEM(Japan), vol.16, no.1, pp.1-6, 2008.
2. H. Inaba, et al., "A study on construction and control method of parallel connected power converter," in IEEJ Annual. Meeting Rec., 4-069, pp128, 2011.
3. H. Inaba, et al., "Simulation analysis of construction and control method of parallel connected power converter," in Japan Ind. Appl. Conf. Rec., 1-2, pp.I-103-106, 2011.
4. H.Inaba, et al, "An electric power conversion system composed of two parallel-connected converters providing different output currents," ICEMS, DS4G4-2, 2012.
5. M. Nakai, et al., "Parallel connected power converter constructed with odd number converters," in Japan Ind. Appl. Society Conf. Rec., 2012, in press.
6. M.Nakai, et al, "Parallel multiple electric power conversion system constructed by connecting three power converters," ICEMS, PCI-0970, 2013.
7. K.Ishikura, et al, "Simulation analysis of control methods for parallel multi-operating system constructed by the same output power converters," ICEMS, PCI-0971, 2013.