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Power Converter Topologies for Grid-Integrated Medium-Voltage Applications

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Power Converters for Medium Voltage Networks

Part of the book series: Green Energy and Technology ((GREEN))

Abstract

Although several converter topologies have been used in low-voltage applications, most of the topologies are not suitable in medium-voltage applications. The selection of converter topology in medium-voltage applications is really a critical problem and highly affects the converter performance and cost. The main aim of this chapter was to find out a suitable converter topology, which can interconnect the renewable generation units directly to the medium-voltage grid with mature semiconductor devices. Different multilevel converter topologies, such as neutral point clamped (NPC), flying capacitor (FC), and modular multilevel cascaded (MMC), have been considered and compared for the design of an 11 kV converter system. The comparison is made in terms of the number of semiconductors, semiconductor cost and availability, total harmonic distortions (THDs), filter size, and control complexity of the converters. The performance is analyzed and compared in the MATLAB/Simulink environment. To ensure quality performance, a level-shifted carrier-based switching scheme is used for the NPC topologies and a phase-shifted carrier-based switching scheme is used for the FC and MMC converter topologies with a carrier frequency of 1–2 kHz and modulation index of 0.8–0.9.

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Authors and Affiliations

  1. School of Electrical, Mechanical and Mechatronic Systems, Faculty of Engineering and Information Technology, University of Technology Sydney (UTS), PO Box 123, Building 11, 81 Broadway, Ultimo, NSW, 2007, Australia

    Md. Rabiul Islam, Youguang Guo & Jianguo Zhu

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  1. Md. Rabiul Islam
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  2. Youguang Guo
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  3. Jianguo Zhu
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Correspondence to Md. Rabiul Islam .

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Islam, M.R., Guo, Y., Zhu, J. (2014). Power Converter Topologies for Grid-Integrated Medium-Voltage Applications. In: Power Converters for Medium Voltage Networks. Green Energy and Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44529-7_3

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  • DOI: https://doi.org/10.1007/978-3-662-44529-7_3

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-44528-0

  • Online ISBN: 978-3-662-44529-7

  • eBook Packages: EnergyEnergy (R0)

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